FCC Regulation Document

Part: 
Topic: C

47 CFR Part 90 (up to date as of 2/20/2024)
                                                                             47 CFR Part 90 (Feb. 20, 2024)
Private Land Mobile Radio Services

This content is from the eCFR and is authoritative but unofficial.

Title 47 —Telecommunication
Chapter I —Federal Communications Commission
Subchapter D —Safety and Special Radio Services

Part 90 Private Land Mobile Radio Services
  Subpart A General Information
      § 90.1 Basis and purpose.
      § 90.5 Other applicable rule parts.
      § 90.7 Definitions.
  Subpart B Public Safety Radio Pool
      § 90.15 Scope.
      § 90.16 Public Safety National Plan.
      § 90.19 Nationwide Public Safety Broadband Network.
      § 90.20 Public Safety Pool.
      § 90.22 Paging operations.
      § 90.25 Non-Federal use of the Federal interoperability channels.
  Subpart C Industrial/Business Radio Pool
      § 90.31 Scope.
      § 90.33 General eligibility.
      § 90.35 Industrial/Business Pool.
  Subparts D–E [Reserved]
  Subpart F Radiolocation Service
      § 90.101 Scope.
      § 90.103 Radiolocation Service.
  Subpart G Applications and Authorizations
      § 90.111      Scope.
      § 90.115      Foreign government and alien eligibility.
      § 90.119      Application requirements.
      § 90.121      Canadian registration.
      § 90.127      Submission and filing of applications.
      § 90.129      Supplemental information to be routinely submitted with applications.
      § 90.135      Modification of license.
      § 90.137      Applications for operation at temporary locations.
      § 90.138      Applications for itinerant frequencies.
      § 90.149      License term.
      § 90.155      Time in which station must be placed in operation.
      § 90.159      Temporary and conditional permits.

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     Special Rules Governing Facilities Used To Provide Commercial Mobile Radio
     Services
     § 90.165     Procedures for mutually exclusive applications.
     § 90.168     Equal employment opportunities.
     § 90.169     Construction prior to grant of application.
   Subpart H Policies Governing the Assignment of Frequencies
     § 90.171 Scope.
     § 90.173 Policies governing the assignment of frequencies.
     § 90.175 Frequency coordinator requirements.
     § 90.176 Coordinator notification requirements on frequencies below 512 MHz, at 769–775/
               799–805 MHz, or at 1427–1432 MHz.
     § 90.179 Shared use of radio stations.
     § 90.185 Multiple licensing of radio transmitting equipment in the mobile radio service.
     § 90.187 Trunking in the bands between 150 and 512 MHz.
   Subpart I General Technical Standards
     § 90.201 Scope.
     § 90.203 Certification required.
     § 90.205 Power and antenna height limits.
     § 90.207 Types of emissions.
     § 90.209 Bandwidth limitations.
     § 90.210 Emission masks.
     § 90.212 Provisions relating to the use of scrambling devices and digital voice modulation.
     § 90.213 Frequency stability.
     § 90.214 Transient frequency behavior.
     § 90.215 Transmitter measurements.
     § 90.217 Exemption from technical standards.
     § 90.219 Use of signal boosters.
     § 90.221 Adjacent channel power limits.
     § 90.223 RF exposure.
   Subpart J Non-Voice and Other Specialized Operations
     § 90.231 Scope.
     § 90.233 Base/mobile non-voice operations.
     § 90.235 Secondary fixed signaling operations.
     § 90.237 Interim provisions for operation of radioteleprinter and radiofacsimile devices.
     § 90.238 Telemetry operations.
     § 90.239 [Reserved]
     § 90.241 Radio call box operations.
     § 90.242 Travelers' information stations.
     § 90.243 Mobile relay stations.

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     § 90.245 Fixed relay stations.
     § 90.247 Mobile repeater stations.
     § 90.248 Wildlife and ocean buoy tracking.
     § 90.249 Control stations.
     § 90.250 Meteor burst communications.
   Subpart K Standards for Special Frequencies or Frequency Bands
     § 90.251 Scope.
     § 90.253 Use of frequency 5167.5 kHz.
     § 90.255 [Reserved]
     § 90.257 Assignment and use of frequencies in the band 72–76 MHz.
     § 90.259 Assignment and use of frequencies in the bands 216–220 MHz and 1427–1432
                MHz.
     § 90.261 Assignment and use of the frequencies in the band 450–470 MHz for fixed
                operations.
     § 90.263 Substitution of frequencies below 25 MHz.
     § 90.264 Disaster communications between 2 and 10 MHz.
     § 90.265 Assignment and use of frequencies in the bands allocated for Federal use.
     § 90.266 Long distance communications on frequencies below 25 MHz.
     § 90.267 Assignment and use of frequencies in the 450–470 MHz band for low power use.
     § 90.269 Use of frequencies for self-powered vehicle detectors.
     § 90.273 Availability and use of frequencies in the 421–430 MHz band.
     § 90.275 Selection and assignment of frequencies in the 421–430 MHz band.
     § 90.279 Power limitations applicable to the 421–430 MHz band.
     § 90.281 Restrictions on operational fixed stations in the 421–430 MHz band.
     § 90.283 [Reserved]
   Subpart L Authorization in the Band 470–512 MHz (UHF-TV Sharing)
     § 90.301 Scope.
     § 90.303 Availability of frequencies.
     § 90.305 Location of stations.
     § 90.307 Protection criteria.
     § 90.309 Tables and figures.
     § 90.311 Frequencies.
     § 90.313 Frequency loading criteria.
     § 90.315 Special provisions governing use of frequencies in the 476–494 MHz band (TV
                Channels 15, 16, 17) in the Southern Louisiana-Texas Offshore Zone.
     § 90.317 Fixed ancillary signaling and data transmissions.
   Subpart M Intelligent Transportation Systems Radio Service
     § 90.350           Scope.
     § 90.351           Location and Monitoring Service.

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     § 90.353          LMS operations in the 902–928 MHz band.
     § 90.355          LMS operations below 512 MHz.
     § 90.357          Frequencies for LMS systems in the 902–928 MHz band.
     § 90.359          Field strength limits for EA-licensed LMS systems.
     § 90.361          Interference from part 15 and Amateur operations.
     § 90.363          Grandfathering provisions for existing AVM licensees.
     § 90.365          Partitioned licenses and disaggregated spectrum.
     Regulations Governing the Licensing and Use of Frequencies in the 5895–5925
     MHz Band for Dedicated Short-Range Communications Service (DSRCS)
        § 90.370 Permitted frequencies.
        § 90.371 Dedicated short range communications service.
        § 90.372 DSRCS notification requirement.
        § 90.373 Eligibility in the DSRCS.
        § 90.375 RSU license areas, communication zones and registrations
        § 90.377 Frequencies available; maximum EIRP and antenna height, and priority
                 communications.
        § 90.379 Technical standards for Roadside Units.
        § 90.383 RSU sites near the U.S./Canada or U.S./Mexico border.
        § 90.395 Incorporation by reference.
   Subpart N Operating Requirements
     § 90.401 Scope.
     § 90.403 General operating requirements.
     § 90.405 Permissible communications.
     § 90.407 Emergency communications.
     § 90.411 Civil defense communications.
     § 90.415 Prohibited uses.
     § 90.417 Interstation communication.
     § 90.419 Points of communication.
     § 90.421 Operation of mobile station units not under the control of the licensee.
     § 90.423 Operation on board aircraft.
     § 90.425 Station identification.
     § 90.427 Precautions against unauthorized operation.
     § 90.429 Control point and dispatch point requirements.
     § 90.431 Unattended operation.
     § 90.433 Operator requirements.
     § 90.437 Posting station licenses.
     § 90.439 Inspection of stations.
     § 90.441 Inspection and maintenance of antenna structure marking and associated control
               equipment.

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     § 90.443 Content of station records.
     § 90.445 Form of station records.
     § 90.447 Retention of station records.
   Subpart O Transmitter Control
     § 90.460         Scope.
     § 90.461         Direct and remote control of transmitters.
     § 90.463         Transmitter control points.
     § 90.465         Control of systems of communication.
     § 90.467         Dispatch points.
     § 90.469         Unattended operation.
     Internal Transmitter Control Systems
        § 90.471 Points of operation in internal transmitter control systems.
        § 90.473 Operation of internal transmitter control systems through licensed fixed control
                  points.
        § 90.475 Operation of internal transmitter control systems in specially equipped systems.
     Interconnected Systems
        § 90.476 Interconnection of fixed stations and certain mobile stations.
        § 90.477 Interconnected systems.
        § 90.483 Permissible methods and requirements of interconnecting private and public
                  systems of communications.
   Subpart P Paging Operations
     § 90.490 One-way paging operations in the private services.
     § 90.492 One way paging operations in the 806–824/851–869 MHz and 896–901/935–940
                MHz bands.
     § 90.493 Paging operations on exclusive channels in the 929–930 MHz band.
     § 90.494 Paging operations on shared channels in the 929–930 MHz band.
   Subpart Q [Reserved]
   Subpart R Regulations Governing the Licensing and Use of Frequencies in the
                763–775 and 793–805 MHz Bands
     § 90.521 Scope.
     § 90.523 Eligibility.
     § 90.525 Administration of interoperability channels.
     § 90.527 Regional plan requirements.
     § 90.529 State License.
     § 90.531 Band plan.
     § 90.532 Licensing of the 758–769 MHz and 788–799 MHz bands; first responder network
                authority license and renewal.
     § 90.533 Transmitting sites near the U.S./Canada or U.S./Mexico border.
     § 90.535 Modulation and spectrum usage efficiency requirements.

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     § 90.537    Trunking requirement.
     § 90.539    Frequency stability.
     § 90.541    Transmitting power and antenna height limits.
     § 90.542    Broadband transmitting power limits.
     § 90.543    Emission limitations.
     § 90.547    Narrowband Interoperability channel capability requirement.
     § 90.548    Interoperability Technical Standards.
     § 90.549    Transmitter certification.
     § 90.551    Construction requirements.
     § 90.553    Encryption.
     § 90.555    Information exchange.
     § 90.557    Secondary fixed signaling operations.
     § 90.559    Station Identification.
   Subpart S     Regulations Governing Licensing and Use of Frequencies in the
                 806–824, 851–869, 896–901, and 935–940 MHz Bands
       § 90.601                  Scope.
       Application for Authorizations
          § 90.603 Eligibility.
          § 90.605 Forms to be used.
          § 90.607 Supplemental information to be furnished by applicants for facilities under this
                    subpart.
          § 90.609 Special limitations on amendment of applications for assignment or transfer of
                    authorizations for radio systems above 800 MHz.
       Policies Governing the Processing of Applications and the Selection and Assignment
       of Frequencies for Use in the 806–824 MHz, 851–869 MHz, 896–901 MHz, and
       935–940 MHz Bands
          § 90.613 Frequencies available.
          § 90.614 Segments of the 806–824/851–869 MHz band for non-border areas.
          § 90.615 Individual channels available in the General Category in 806–824/851–869 MHz
                    band.
          § 90.616 896–897.5/935–936.5 MHz and 900.5–901/939.5–940 MHz narrowband
                    segments.
          § 90.617 Frequencies in the 809.750–824/854.750–869 MHz, and 896–901/935–940 MHz
                    bands available for trunked, conventional or cellular system use in non-border
                    areas.
          § 90.619 Operations within the U.S./Mexico and U.S./Canada border areas.
          § 90.621 Selection and assignment of frequencies.
          § 90.623 Limitations on the number of frequencies assignable for conventional systems.
          § 90.625 Other criteria to be applied in assigning channels for use in conventional systems

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                    of communication.
          § 90.627 Limitation on the number of frequency pairs that may be assignable for trunked
                    systems and on the number of trunked systems.
          § 90.629 Extended implementation period.
          § 90.631 Trunked systems loading, construction and authorization requirements.
          § 90.633 Conventional systems loading requirements.
       Technical Regulations Regarding the Use of Frequencies in the 806–824 MHz,
       851–869 MHz, 896–901 MHz, and 935–940 MHz Bands
          § 90.635 Limitations on power and antenna height.
          § 90.637 Restrictions on operational fixed stations.
          § 90.645 Permissible operations.
          § 90.647 Station identification.
          § 90.651 Supplemental reports required of licensees authorized under this subpart.
          § 90.655 Special licensing requirements for Specialized Mobile Radio systems.
          § 90.656 Responsibilities of base station licensees of Specialized Mobile Radio systems.
       Policies Governing the Licensing and Use of MTA-Based SMR Systems in the 896–901/
       935–940 MHz Band
          § 90.661 MTA-based SMR service areas.
          § 90.663 MTA-based SMR system operations.
          § 90.665 Authorization, construction and implementation of MTA licenses.
          § 90.667 Grandfathering provisions for incumbent licensees.
          § 90.669 Emission limits.
          § 90.671 Field strength limits.
       Procedures and Process—Unacceptable Interference
          § 90.672 Unacceptable interference to non-cellular 800 MHz licensees from 800 MHz
                    cellular systems or part 22 Cellular Radiotelephone systems, and within the 900
                    MHz narrowband segments, and to narrowband 900 MHz licensees from 900 MHz
                    broadband licensees.
          § 90.673 Obligation to abate unacceptable interference.
          § 90.674 Interference resolution procedures.
          § 90.675 Information exchange.
          §§ 90.676-90.677 [Reserved]
       Policies Governing the Licensing and Use of EA-Based SMR Systems in the 809–824/
       851–869 MHz Band
          § 90.681 EA-based SMR service areas.
          § 90.683 EA-based SMR system operations.
          § 90.685 Authorization, construction and implementation of EA licenses.
          § 90.687 Special provisions regarding assignments and transfers of authorizations for
                    incumbent SMR licensees in the 809–824/854–869 MHz band.

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        § 90.689 Field strength limits.
        § 90.691 Emission mask requirements for EA-based systems.
        § 90.693 Grandfathering provisions for incumbent licensees.
        § 90.699 Transition of the upper 200 channels in the 800 MHz band to EA licensing.
   Subpart T Regulations Governing Licensing and Use of Frequencies in the
               220–222 MHz Band
     § 90.701    Scope.
     § 90.703    Eligibility.
     § 90.705    Forms to be used.
     § 90.709    Special limitations on amendment of applications and on assignment or transfer
                 of authorizations licensed under this subpart.
     § 90.711    Processing of Phase II applications.
     § 90.713    Entry criteria.
     § 90.715    Frequencies available.
     § 90.717    Channels available for nationwide systems in the 220–222 MHz band.
     § 90.719    Individual channels available for assignment in the 220–222 MHz band.
     § 90.720    Channels available for public safety/mutual aid.
     § 90.721    Other channels available for non-nationwide systems in the 220–222 MHz band.
     § 90.723    Selection and assignment of frequencies.
     § 90.725    Construction requirements for Phase I licensees.
     § 90.727    Extended implementation schedules for Phase I licensees.
     § 90.729    Limitations on power and antenna height.
     § 90.733    Permissible operations.
     § 90.735    Station identification.
     § 90.739    Number of systems authorized in a geographical area.
     § 90.741    Urban areas for Phase I nationwide systems.
     § 90.743    Renewal requirements.
     § 90.745    Phase I licensee service areas.
     § 90.751    Minor modifications of Phase I, non-nationwide licenses.
     § 90.753    Conditions of license modification.
     § 90.757    Construction requirements.
     Policies Governing the Licensing and Use of Phase II EA, Regional and
     Nationwide Systems
        § 90.761 EA and Regional licenses.
        § 90.763 EA, Regional and nationwide system operations.
        § 90.765 Licenses term for Phase II licenses.
        § 90.767 Construction and implementation of EA and Regional licenses.
        § 90.769 Construction and implementation of Phase II nationwide licenses.
        § 90.771 Field strength limits.

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   Subpart U    Competitive Bidding Procedures for 900 MHz Specialized Mobile Radio
                Service
     § 90.801 900 MHz SMR spectrum subject to competitive bidding.
     §§ 90.802-90.803 [Reserved]
     § 90.804 Aggregation of 900 MHz SMR licenses.
     §§ 90.805-90.806 [Reserved]
     § 90.807 Submission of upfront payments.
     § 90.808 [Reserved]
     § 90.809 License grants.
     § 90.810 Bidding credits for small businesses.
     § 90.811 Reduced down payment for licenses won by small businesses.
     § 90.812 [Reserved]
     § 90.813 Partitioned licenses and disaggregated spectrum.
     § 90.814 Definitions.
     § 90.815 Records maintenance and definitions.
   Subpart V Competitive Bidding Procedures for 800 MHz Specialized Mobile Radio
                Service
     § 90.901 800 MHz SMR spectrum subject to competitive bidding.
     § 90.902 [Reserved]
     § 90.903 Competitive bidding mechanisms.
     § 90.904 Aggregation of EA licenses.
     § 90.905 [Reserved]
     § 90.909 License grants.
     § 90.910 Bidding credits.
     § 90.911 Partitioned licenses and disaggregated spectrum.
     § 90.912 Definitions.
     § 90.913 Record maintenance and definitions.
   Subpart W Competitive Bidding Procedures for the 220 MHz Service
     § 90.1001 220 MHz service subject to competitive bidding.
     §§ 90.1003-90.1015 [Reserved]
     § 90.1017 Bidding credits for small businesses and very small businesses.
     § 90.1019 Eligibility for partitioned licenses.
     § 90.1021 Definitions concerning competitive bidding process.
     § 90.1023 Records maintenance and definitions.
     § 90.1025 Limitations on settlements.
   Subpart X Competitive Bidding Procedures for Location and Monitoring Service
     § 90.1101 Location and Monitoring Service subject to competitive bidding.
     § 90.1103 Designated entities.
   Subpart Y Regulations Governing Licensing and Use of Frequencies in the

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               4940–4990 MHz Band
     § 90.1201 Scope.
     § 90.1203 Eligibility.
     § 90.1205 Permissible operations.
     § 90.1207 Licensing.
     § 90.1209 Policies governing the use of the 4940–4990 MHz band.
     § 90.1211 Regional plan.
     § 90.1213 Band plan.
     § 90.1215 Power limits.
     § 90.1217 4.9 GHz Band Manager.
   Subpart Z Wireless Broadband Services in the 3650–3700 MHz Band
     § 90.1301 Scope.
     § 90.1303 Eligibility.
     § 90.1305 Permissible operations.
     § 90.1307 Licensing.
     § 90.1309 Regulatory status.
     § 90.1311 License term.
     § 90.1312 Assignment and transfer.
     § 90.1319 Policies governing the use of the 3650–3700 MHz band.
     § 90.1321 Power and antenna limits.
     § 90.1323 Emission limits.
     § 90.1331 Restrictions on the operation of base and fixed stations.
     § 90.1333 Restrictions on the operation of mobile and portable stations.
     § 90.1335 RF safety.
     § 90.1337 Operation near Canadian and Mexican borders.
     § 90.1338 Grandfathered operation and transition to Citizens Broadband Radio Service.

PART 90—PRIVATE LAND MOBILE RADIO SERVICES
Authority: 47 U.S.C. 154(i), 161, 303(g), 303(r), 332(c)(7), 1401–1473

Source: 43 FR 54791, Nov. 22, 1978, unless otherwise noted.

Subpart A—General Information
§ 90.1 Basis and purpose.
     (a) Basis. The rules in this part are promulgated under Title III of the Communications Act of 1934, as
         amended which vests authority in the Federal Communications Commission to regulate radio
         transmission and to issue licenses for radio stations. All rules in this part are in accordance with
         applicable treaties and agreements to which the United States is a party.

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     (b) Purpose. This part states the conditions under which radio communications systems may be licensed and
         used in the Public Safety, Industrial/Business Radio Pool, and Radiolocation Radio Services. These rules
         do not govern the licensing of radio systems belonging to and operated by the United States.

[43 FR 54791, Nov. 22, 1978, as amended at 65 FR 66650, Nov. 7, 2000]

§ 90.5 Other applicable rule parts.
Other Commission rule parts of importance that may be referred to with respect to licensing and operations in radio
services governed under this part include the following:

     (a) Part 0 of the Commission's Rules describes the Commission's organization and delegations of authority.
         This part also lists available Commission publications, and standards and procedures for access to
         Commission records, and location of Commission Field Offices.

     (b) Part 1 includes rules of practice and procedure for the filing of applications for stations to operate in the
         Wireless Telecommunications Services, adjudicatory proceedings including hearing proceedings, and rule
         making proceedings; procedures for reconsideration and review of the Commission's actions; provisions
         concerning violation notices and forfeiture proceedings; and the environmental processing requirements
         that, together with the procedures specified in § 17.4(c) of this chapter, if applicable, must be complied
         with prior to initiating construction.

     (c) Part 2 contains the table of frequency allocations and special requirements in International regulations,
         agreements, and treaties. This part also contains standards and procedures concerning marketing of
         radio frequency devices, and for obtaining equipment certification.

     (d) Part 5 contains standards and procedures for obtaining experimental authorizations.

     (e) Part 15 provides for the operation of incidental and restricted radio frequency devices that do not require
         an individual license.

     (f) Part 17 contains requirements for construction, marking and lighting of antenna towers, and the
         environmental notification process that must be completed before filing certain antenna structure
         registration applications.

     (g) Part 18 deals with the operation of industrial, scientific, and medical (ISM) devices that are not intended
         for radio communication,

     (h) Part 20 contains rules relating to commercial mobile radio services.

     (i)   Part 20 which governs commercial mobile radio service applicable to certain providers in the following
           services in this part:

           (1) Industrial/business pool.

           (2) Private paging;

           (3) Land mobile service on 220–222 MHz;

           (4) Specialized Mobile Radio Service.

     (j)   Part 22 contains regulations for public (common carrier) mobile radio services.

     (k) Part 27 contains rules relating to miscellaneous wireless communications services.

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     (l)   Part 51 contains rules relating to interconnection.

     (m) Part 68 contains technical standards for connection of private land mobile radio equipment to the public
         switched telephone network.

     (n) Part 101 governs the operation of fixed microwave services.

[43 FR 54791, Nov. 22, 1978, as amended at 50 FR 39677, Sept. 30, 1985; 55 FR 20398, May 16, 1990; 58 FR 21407, Apr. 21, 1993;
59 FR 18499, Apr. 19, 1994; 59 FR 59957, Nov. 21, 1994; 61 FR 45635, Aug. 29, 1996; 63 FR 36608, July 7, 1998; 63 FR 68958,
Dec. 14, 1998; 72 FR 35190, June 27, 2007; 72 FR 48858, Aug. 24, 2007; 77 FR 3955, Jan. 26, 2012]

§ 90.7 Definitions.
    220 MHz service. The radio service for the licensing of frequencies in the 220–222 MHz band.

    800 MHz Cellular System. In the 806–824 MHz/ 851–869 MHz band, a system that uses multiple,
         interconnected, multi-channel transmit/receive cells capable of frequency reuse and automatic handoff
         between cell sites to serve a larger number of subscribers than is possible using non-cellular technology.

    800 MHz High Density Cellular System. In the 806–824 MHz/ 851–869 MHz band, a high density cellular system
         is defined as a cellular system which:

           (1) Has more than five overlapping interactive sites featuring hand-off capability; and

           (2) Any one of such sites has an antenna height of less than 30.4 meters (100 feet) above ground level
               with an antenna height above average terrain (HAAT) of less than 152.4 meters (500 feet) and
               twenty or more paired frequencies.

    900 MHz broadband. See 47 CFR 27.1501.

    900 MHz broadband licensee. See 47 CFR 27.1501.

    900 MHz broadband segment. See 47 CFR 27.1501.

    900 MHz narrowband segment. See 47 CFR 27.1501.

    900 MHz SMR MTA-based license or MTA license.

           (1) A license authorizing the right to use a specified block of 900 MHz SMR spectrum within one of the
               47 Major Trading Areas (“MTAs”), as embodied in Rand McNally's Trading Areas System MTA
               Diskette and geographically represented in the map contained in Rand McNally's Commercial Atlas &
               Marketing Guide (the “MTA Map”), with the following exceptions and additions:

                 (i)   Alaska is separated from the Seattle MTA and is licensed separately.

                (ii) Guam and the Northern Mariana Islands are licensed as a single MTA-like area.

                (iii) Puerto Rico and the United States Virgin Islands are licensed as a single MTA-like area.

                (iv) American Samoa is licensed as a single MTA-like area.

           (2) The MTA map is available for public inspection through the Federal Communications Commission's
               Reference Information Center.

    Antenna height above average terrain (AAT). Height of the center of the radiating element of the antenna above
         the average terrain. (See § 90.309(a)(4) for calculation method.)

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                                                                            47 CFR 90.7 “Antenna height above sea level”
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    Antenna height above sea level. The height of the topmost point of the antenna above mean sea level.

    Antenna structure. Structure on which an antenna is mounted.

    Assigned frequency. Center of a frequency band assigned to a station.

    Assigned frequency band. The frequency band the center of which coincides with the frequency assigned to the
          station and the width of which equals the necessary bandwidth plus twice the absolute value of the
          frequency tolerance.

    Authorized bandwidth. The frequency band, specified in kilohertz and centered on the carrier frequency
          containing those frequencies upon which a total of 99 percent of the radiated power appears, extended to
          include any discrete frequency upon which the power is at least 0.25 percent of the total radiated power.

    Automobile emergency licensee. Persons regularly engaged in any of the following activities who operate radio
         stations for transmission of communications required for dispatching repair trucks, tow trucks, or other
         road service vehicles to disabled vehicles:

           (1) The operation of a private emergency road service for disabled vehicles by associations of owners of
               private automobiles; or

           (2) The business of providing to the general public an emergency road service for disabled vehicles.

    Average terrain. The average elevation of terrain between 3.2 and 16 km (2 and 10 miles) from the antenna site.

    Base station. A station at a specified site authorized to communicate with mobile stations.

    Basic trading areas. Service areas that are based on the Rand McNally 1992 Commercial Atlas & Marketing
          Guide, 123rd Edition, at pages 38–39, with the following additions licensed separately as BTA-like areas:
          American Samoa; Guam, Northern Mariana Islands; Mayaguez/Aguadilla-Ponce, Puerto Rico; San Juan,
          Puerto Rico; and the United States Virgin Islands. The Mayaguez/Aguadilla-Ponce BTA-like service area
          consists of the following municipios: Adjuntas, Aguada, Aguadilla, Anasco, Arroyo, Cabo Rojo, Coamo,
          Guanica, Guayama, Guayanilla, Hormigueros, Isabela, Jayuya, Juana Diaz, Lajas, Las Marias, Maricao,
          Maunabo, Mayaguez, Moca, Patillas, Penuelas, Ponce, Quebradillas, Rincon, Sabana Grande, Salinas, San
          German, Santa Isabel, Villalba, and Yauco. The San Juan BTA-like service area consists of all other
          municipios in Puerto Rico.

    Carrier frequency. The frequency of an unmodulated electromagnetic wave.

    Centralized trunked system. A system in which there is dynamic assignment of communications paths by
          automatically searching all communications paths in the system and assigning to a user an open
          communications path within that system. Individual communications paths within a trunked system may
          be classified as centralized or decentralized in accordance with the requirements of § 90.187.

    Channel loading. The number of mobile transmitters authorized to operate on a particular channel within the
         same service area.

    Communications zone. The service area associated with an individual fixed Roadside Unit (RSU). The
        communications zone is determined based on the RSU equipment class specified in section 90.375.

    Contention-based protocol. A protocol that allows multiple users to share the same spectrum by defining the
         events that must occur when two or more transmitters attempt to simultaneously access the same
         channel and establishing rules by which a transmitter provides reasonable opportunities for other
         transmitters to operate. Such a protocol may consist of procedures for initiating new transmissions,

47 CFR 90.7 “Contention-based protocol” (enhanced display)                                                page 13 of 516
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                                                                               47 CFR 90.7 “Contention-based protocol” (1)
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           procedures for determining the state of the channel (available or unavailable), and procedures for
           managing retransmissions in the event of a busy channel. Contention-based protocols shall fall into one
           of two categories:

           (1) An unrestricted contention-based protocol is one which can avoid co-frequency interference with
               devices using all other types of contention-based protocols.

           (2) A restricted contention-based protocol is one that does not qualify as unrestricted.

    Control point. Any place from which a transmitter's functions may be controlled.

    Control station. An Operational Fixed Station, the transmissions of which are used to control automatically the
          emissions or operation of another radio station at a specified location.

    Conventional radio system. A method of operation in which one or more radio frequency channels are assigned
         to mobile and base stations but are not employed as a trunked group. An “urban-conventional system” is
         one whose transmitter site is located within 24 km (15 miles) of the geographic center of any of the first
         50 urbanized areas (ranked by population) of the United States. A “sub-urban-conventional system” is one
         whose transmitter site is located more than 24 km (15 miles) from the geographic center of the first 50
         urbanized areas. See Table 21, Rank of Urbanized Areas in the United States by Population, page 1–87,
         U.S. Census (1970); and table 1 of § 90.635.

    Critical Infrastructure Industry (CII). State, local government and non-government entities, including utilities,
           railroads, metropolitan transit systems, pipelines, private ambulances, volunteer fire departments, and
           not-for-profit organizations that offer emergency road services, providing private internal radio services
           provided these private internal radio services are used to protect safety of life, health, or property; and are
           not made commercially available to the public.

    Decentralized trunked system. A system which monitors the communications paths within its assigned channels
         for activity within and outside of the trunked system and transmits only when an available
         communications path is found. Individual communications paths within a trunked system may be
         classified as centralized or decentralized in accordance with the requirements of § 90.187.

    Dedicated Short-Range Communications Services (DSRCS). The use of radio techniques to transfer data over
          short distances between roadside and mobile units, between mobile units, and between portable and
          mobile units to perform operations related to the improvement of traffic flow, traffic safety, and other
          intelligent transportation service applications in a variety of environments. DSRCS systems may also
          transmit status and instructional messages related to the units involved.

    Dispatch point. Any place from which radio messages can be originated under the supervision of a control point.

    EA–based or EA license. A license authorizing the right to use a specified block of SMR or LMS spectrum within
         one of the 175 Economic Areas (EAs) as defined by the Department of Commerce Bureau of Economic
         Analysis. The EA Listings and the EA Map are available for public inspection through the Federal
         Communications Commission's Reference Information Center.

    Economic Areas (EAs). A total of 175 licensing regions based on the United States Department of Commerce
         Bureau of Economic Analysis Economic Areas defined as of February 1995, with the following exceptions:

           (1) Guam and Northern Mariana Islands are licensed as a single EA-like area (identified as EA 173 in the
               220 MHz Service);

           (2) Puerto Rico and the U.S. Virgin Islands are licensed as a single EA-like area (identified as EA 174 in
               the 220 MHz Service); and

47 CFR 90.7 “Economic Areas (EAs)” (2) (enhanced display)                                                    page 14 of 516
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                                                                                   47 CFR 90.7 “Economic Areas (EAs)” (3)
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           (3) American Samoa is licensed as a single EA-like area (identified as EA 175 in the 220 MHz Service).

    Effective radiated power (ERP). The power supplied to an antenna multiplied by the relative gain of the antenna
           in a given direction.

    Emergency medical licensee. Persons or entities engaged in the provision of basic or advanced life support
         services on an ongoing basis that operate radio stations for transmission of communications essential
         for the delivery or rendition of emergency medical services for the provision of basic or advanced life
         support.

    Enhanced Specialized Mobile Radio System (ESMR). A specialized mobile radio (SMR) system operating in the
         800 MHz band which employs an 800 MHz cellular system as defined in this section.

    Equivalent Isotropically Radiated Power (EIRP). The product of the power supplied to the antenna and the
          antenna gain in a given direction relative to an isotropic antenna (absolute or isotropic gain).

    Film and video production licensee. Persons primarily engaged in or providing direct technical support to the
          production, videotaping, or filming of motion pictures or television programs, such as movies, programs,
          news programs, special events, educational programs, or training films, regardless of whether the
          productions are prepared primarily for final exhibition at theatrical outlets or on television or for
          distribution through other mass communications outlets.

    Fire licensee. Any territory, possession, state, city, county, town, or similar governmental entity, and persons or
            organizations charged with specific fire protection activities that operate radio stations for transmission
            of communications essential to official fire activities.

    First Responder Network Authority. An entity established by the Middle Class Tax Relief and Job Creation Act of
           2012 as an independent authority within the National Telecommunications and Information
           Administration and designated by that statute to hold a nationwide license associated with the 758–769
           MHz and 788–799 MHz bands for use in deploying a nationwide public safety broadband network.

    Fixed relay station. A station at a specified site used to communicate with another station at another specified
           site.

    Forest products licensee. Persons primarily engaged in tree logging, tree farming, or related woods operations,
          including related hauling activities, if the hauling activities are performed under contract to, and
          exclusively for, persons engaged in woods operations or engaged in manufacturing lumber, plywood,
          hardboard, or pulp and paper products from wood fiber.

    Forward links. Transmissions in the frequency bands specified in § 90.357(a) and used to control and
         interrogate the mobile units to be located by multilateration LMS systems.

    Frequency coordination. The process of obtaining the recommendation of a frequency coordinator for a
          frequency(ies) that will most effectively meet the applicant's needs while minimizing interference to
          licensees already operating within a given frequency band.

    Frequency coordinator. An entity or organization that has been certified by the Commission to recommend
          frequencies for use by licensees in the Private Land Mobile Radio Services.

    Geographic center. The geographic center of an urbanized area is defined by the coordinates given at table 1 of
         § 90.635.

    Geophysical telemetry. Telemetry involving the simultaneous transmission of seismic data from numerous
         locations to a central receiver and digital recording unit.

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                                                                                      47 CFR 90.7 “Harmful interference”
Private Land Mobile Radio Services

    Harmful interference. For the purposes of resolving conflicts between stations operating under this part, any
         emission, radiation, or induction which specifically degrades, obstructs, or interrupts the service provided
         by such stations.

    Interconnection. Connection through automatic or manual means of private land mobile radio stations with the
           facilities of the public switched telephone network to permit the transmission of messages or signals
           between points in the wireline or radio network of a public telephone company and persons served by
           private land mobile radio stations. Wireline or radio circuits or links furnished by common carriers, which
           are used by licensees or other authorized persons for transmitter control (including dial-up transmitter
           control circuits) or as an integral part of an authorized, private, internal system of communication or as an
           integral part of dispatch point circuits in a private land mobile radio station are not considered to be
           interconnection for purposes of this rule part.

    Internal system. An internal system of communication is one in which all messages are transmitted between the
          fixed operating positions located on premises controlled by the licensee and the associated mobile
          stations or paging receivers of the licensee. (See subpart O).

    Interoperability. An essential communication link within public safety and public service wireless
          communications systems which permits units from two or more different entities to interact with one
          another and to exchange information according to a prescribed method in order to achieve predictable
          results.

    Itinerant operation. Operation of a radio station at unspecified locations for varying periods of time.

    Land mobile radio service. A mobile service between base stations and land mobile stations, or between land
         mobile stations.

    Land mobile radio system. A regularly interacting group of base, mobile and associated control and fixed relay
         stations intended to provide land mobile radio communications service over a single area of operation.

    Land station. A station in the mobile service not intended to be used while in motion. [As used in this part, the
          term may be used to describe a base, control, fixed, operational fixed or fixed relay station, or any such
          station authorized to operate in the “temporary” mode.]

    Line A. An imaginary line within the U.S., approximately paralleling the U.S.-Canadian border, north of which
          Commission coordination with the Canadian authorities in the assignment of frequencies is generally
          required. It begins at Aberdeen, Washington, running by great circle arc to the intersection of 48° N., 120°
          W., then along parallel 48° N., to the intersection of 95° W., thence by great circle arc through the
          southernmost point of Duluth, Minnesota, thence by great circle arc to 45° N., 85° W., thence southward
          along meridian 85° W. to its intersection with parallel 41° N., to its intersection with meridian 82° W.,
          thence by great circle arc through the southernmost point of Bangor, Maine, thence by great circle arc
          through the southernmost of Searsport, Maine, at which point it terminates.

    Line C. An imaginary line in Alaska approximately paralleling the border with Canada, East of which Commission
          coordination with Canadian authorities in the assignment of frequencies is generally required. It begins at
          the intersection of 70° N., 144° W., thence by great circle arc to the intersection of 60° N., 143° W., thence
          by great circle arc so as to include all the Alaskan Panhandle.

    Location and Monitoring Service (LMS). The use of non-voice signaling methods to locate or monitor mobile
          radio units. LMS systems may transmit and receive voice and non-voice status and instructional
          information related to such units.

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47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                       47 CFR 90.7 “Major trading areas”
Private Land Mobile Radio Services

    Major trading areas. Service areas based on the Rand McNally 1992 Commercial Atlas & Marketing Guide, 123rd
          Edition, at pages 38–39, with the following exceptions and additions:

           (a) Alaska is separated from the Seattle MTA and is licensed separately.

           (b) Guam and the Northern Mariana Islands are licensed as a single MTA-like area.

           (c) Puerto Rico and the United States Virgin Islands are licensed as a single MTA-like area.

           (d) American Samoa is licensed as a single MTA-like area.

    Manufacturers licensee. Persons primarily engaged in any of the following manufacturing activities:

           (1) The mechanical or chemical transformation of substances into new products within such
               establishments as plants, factories, shipyards, or mills which employ, in that process, powerdriven
               machines and materials-handling equipment;

           (2) The assembly of components of manufactured products within such establishments as plants,
               factories, shipyards, or mills where the new product is neither a new structure nor other fixed
               improvement. Establishments primarily engaged in the wholesale or retail trade, or in service
               activities, even though they fabricate or assemble any or all the products or commodities handled,
               are not included in this category; or

           (3) The providing of supporting services or materials by a corporation to its parent corporation, to
               another subsidiary of its parent or to its own subsidiary, where such supporting services or materials
               are directly related to those regular activities of such parent or subsidiary which are eligible under
               paragraphs (1) or (2) of this definition.

    Meteor burst communications. Communications by the propagation of radio signals reflected off ionized meteor
         trails.

    Mobile relay station. A base station in the mobile service authorized to retransmit automatically on a mobile
          service frequency communications which originate on the transmitting frequency of the mobile station.

    Mobile repeater station. A mobile station authorized to retransmit automatically on a mobile service frequency,
          communications to or from hand-carried transmitters.

    Mobile service. A service of radiocommunication between mobile and base stations, or between mobile
          stations.

    Mobile station. A station in the mobile service intended to be used while in motion or during halts at unspecified
          points. This includes hand carried transmitters.

    Motor carrier licensee. Persons primarily engaged in providing a common or contract motor carrier
          transportation service in any of the following activities: Provided, however, that motor vehicles used as
          taxicabs, livery vehicles, or school buses, and motor vehicles used for sightseeing or special charter
          purposes, shall not be included within the meaning of this term. For purposes of this definition, an urban
          area is defined as being one or more contiguous, incorporated or unincorporated cities, boroughs, towns,
          or villages, having an aggregate population of 2,500 or more persons.

           (1) The transportation of passengers between urban areas;

           (2) The transportation of property between urban areas;

           (3) The transportation of passengers within a single urban area; or

47 CFR 90.7 “Motor carrier licensee” (3) (enhanced display)                                               page 17 of 516
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                                                                                    47 CFR 90.7 “Motor carrier licensee” (4)
Private Land Mobile Radio Services

           (4) The transportation, local distribution or collection of property within a single urban area.

    MTA-based license or MTA license. A license authorizing the right to use a specified block of SMR spectrum
         within one of the 51 Major Trading Areas (“MTAs”), as embodied in Rand McNally's Trading Area System
         MTA Diskette and geographically represented in the map contained in Rand McNally's Commercial Atlas &
         Marketing Guide (the “MTA Map”). The MTA Listings, the MTA Map and the Rand McNally/AMTA license
         agreement are available for public inspection through the Reference Information Center.

    Multilateration LMS system. A system that is designed to locate vehicles or other objects by measuring the
           difference of time of arrival, or difference in phase, of signals transmitted from a unit to a number of fixed
           points or from a number of fixed points to the unit to be located.

    Mutually exclusive application. Two or more pending applications are mutually exclusive if the grant of one
         application would effectively preclude the grant of one or more of the others under Commission rules
         governing the services involved.

    Non-multilateration LMS System. A system that employs any of a number of non-multilateration technologies to
         transmit information to and/or from vehicular units.

    On-Board unit (OBU). An On-Board Unit is a DSRCS transceiver that is normally mounted in or on a vehicle, or
         which in some instances may be a portable unit. An OBU can be operational while a vehicle or person is
         either mobile or stationary. The OBUs receive and contend for time to transmit on one or more radio
         frequency (RF) channels. Except where specifically excluded, OBU operation is permitted wherever vehicle
         operation or human passage is permitted. The OBUs mounted in vehicles are licensed by rule under part
         95 of this chapter and communicate with Roadside Units (RSUs) and other OBUs. Portable OBUs are also
         licensed by rule under part 95 of this chapter. OBU operations in the Unlicensed National Information
         Infrastructure (UNII) Bands follow the rules in those bands.

    Operational fixed station. A fixed station, not open to public correspondence, operated by, and for the sole use of
          those agencies operating their own radiocommunication facilities in the Public Safety, Industrial, Land
          Transportation, Marine, or Aviation Radio Services. (This includes all stations in the fixed service under
          this part.)

    Output power. The radio frequency output power of a transmitter's final radio frequency stage as measured at
          the output terminal while connected to a load of the impedance recommended by the manufacturer.

    Paging. A one-way communications service from a base station to mobile or fixed receivers that provide
          signaling or information transfer by such means as tone, tone-voice, tactile, optical readout, etc.

    Person. An individual, partnership, association, joint stock company, trust or corporation.

    Petroleum licensee. Persons primarily engaged in prospecting for, producing, collecting, refining, or transporting
          by means of pipeline, petroleum or petroleum products (including natural gas).

    Police licensee. Any territory, possession, state, city, county, town, or similar governmental entity including a
          governmental institution authorized by law to provide its own police protection that operate radio stations
          for transmission of communications essential to official police activities.

    Power licensee. Persons primarily engaged in any of the following activities:

           (1) The generation, transmission, or distribution of electrical energy for use by the general public or by
               the members of a cooperative organization;

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47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                          47 CFR 90.7 “Power licensee” (2)
Private Land Mobile Radio Services

           (2) The distribution of manufactured or natural gas by means of pipe line, for use by the general public
               or by the members of a cooperative organization, or, in a combination of that activity with the
               production, transmission or storage of manufactured or natural gas preparatory to such distribution;

           (3) The distribution of steam by means of pipeline or, of water by means of pipeline, canal, or open ditch,
               for use by the general public or by the members of a cooperative organization, or in a combination of
               that activity with the collection, transmission, storage, or purification of water or the generation of
               steam preparatory to such distribution; or

           (4) The providing of a supporting service by a corporation directly related to activities of its parent
               corporation, of another subsidiary of the same parent, or of its own subsidiary, where the party
               served is regularly engaged in any of the activities set forth in this definition.

    Private carrier. An entity licensed in the private services and authorized to provide communications service to
           other private services on a commercial basis.

    Radio call box. A transmitter used by the public to request fire, police, medical, road service, or other emergency
          assistance.

    Radio teleprinting. Radio transmissions to a printing telegraphic instrument having a signal-actuated mechanism
          for automatically printing received messages.

    Radiodetermination. The determination of position, or the obtaining of information relating to position, by means
          of the propagation of radio waves.

    Radiofacsimile. A system of radiocommunication for the transmission of fixed images, with or without half-
          tones, with a view to their reproduction in a permanent form.

    Radiolocation. Radiodetermination used for purposes other than those of radionavigation.

    Radionavigation. Radiodetermination used for the purposes of navigation, including obstruction warning.

    Railroad licensee. Railroad common carriers which are regularly engaged in the transportation of passengers or
           property when such passengers or property are transported over all or part of their route by railroad.

    Regional Economic Area Groupings (REAGs). The six geographic areas for Regional licensing in the 220–222
          MHz band, based on the United States Department of Commerce Bureau of Economic Analysis Economic
          Areas (see 60 FR 13114 (March 10, 1995)) defined as of February 1995, and specified as follows:

     REAG 1 (Northeast): REAG 1 consists of the following EAs: EA 001 (Bangor, ME) through EA 011 (Harrisburg-
     Lebanon-Carlisle, PA); and EA 054 (Erie, PA).

     REAG 2 (Mid-Atlantic): REAG 2 consists of the following EAs: EA 012 (Philadelphia-Wilmington-Atlantic City, PA-
     NJ-DE-MD) through EA 026 (Charleston-North Charleston, SC); EA 041 (Greenville-Spartanburg-Anderson, SC-
     NC); EA 042 (Asheville, NC); EA 044 (Knoxville, TN) through EA 053 (Pittsburgh, PA-WV); and EA 070 (Louisville,
     KY-IN).

     REAG 3 (Southeast): REAG 3 consists of the following EAs: EA 027 (Augusta-Aiken, GA-SC) through EA 040
     (Atlanta, GA-AL-NC); EA 043 (Chattanooga, TN-GA); EA 069 (Evansville-Henderson, IN-KY-IL); EA 071 (Nashville,
     TN-KY) through EA 086 (Lake Charles, LA); EA 088 (Shreveport-Bossier City, LA-AR) through EA 090 (Little
     Rock-North Little Rock, AR); EA 095 (Jonesboro, AR-MO); EA 096 (St. Louis, MO-IL); and EA 174 (Puerto Rico
     and the U.S. Virgin Islands).

47 CFR 90.7 “Regional Economic Area Groupings (REAGs)” (enhanced display)                                   page 19 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                           47 CFR 90.7 “Regional license”
Private Land Mobile Radio Services

     REAG 4 (Great Lakes): REAG 4 consists of the following EAs: EA 055 Cleveland-Akron, OH-PA) through EA 068
     (Champaign-Urbana, IL); EA 097 (Springfield, IL-MO); and EA 100 (Des Moines, IA-IL-MO) through EA 109
     (Duluth-Superior, MN-WI).

     REAG 5 (Central/Mountain): REAG 5 consists of the following EAs: EA 087 (Beaumont-Port Arthur, TX); EA 091
     (Forth Smith, AR-OK) through EA 094 (Springfield, MO); EA 098 (Columbia, MO); EA 099 (Kansas City, MO-KS);
     EA 110 (Grand Forks, ND-MN) through EA 146 (Missoula, MT); EA 148 (Idaho Falls, ID-WY); EA 149 (Twin Falls,
     ID); EA 152 (Salt Lake City-Ogden, UT-ID); and EA 154 (Flagstaff, AZ-UT) through EA 159 (Tucson, AZ).

     REAG 6 (Pacific): REAG 6 consists of the following EAs: EA 147 (Spokane, WA-ID); EA 150 (Boise City, ID-OR);
     EA 151 (Reno, NV-CA); EA 153 (Las Vegas, NV-AZ-UT); EA 160 (Los Angeles-Riverside-Orange County, CA-AZ)
     through EA 173 (Guam and the Northern Mariana Islands); and EA 175 (American Samoa).

    Regional license. A license authorizing the right to use a specified block of 220–222 MHz spectrum within one
          of six Regional Economic Area Groupings (REAGs).

    Relay press licensee. Persons primarily engaged in the publication of a newspaper or in the operation of an
          established press association.

    Roadside unit (RSU). A Roadside Unit is a DSRC transceiver that is mounted along a road or pedestrian
         passageway. An RSU may also be mounted on a vehicle or is hand carried, but it may only operate when
         the vehicle or hand-carried unit is stationary. Furthermore, an RSU operating under this part is restricted to
         the location where it is licensed to operate. However, portable or hand-held RSUs are permitted to operate
         where they do not interfere with a site-licensed operation. A RSU broadcasts data to OBUs or exchanges
         data with OBUs in its communications zone. An RSU also provides channel assignments and operating
         instructions to OBUs in its communications zone, when required.

    Roadway bed surface. For DSRCS, the road surface at ground level.

    Secondary operation. Radio communications which may not cause interference to operations authorized on a
         primary basis and which are not protected from interference from those primary operations.

    Service availability. The use of a public safety broadband network on a day-to-day basis for operational purposes
          by at least fifty users.

    Signal amplifier. A device that amplifies radio frequency signals and is connected to a mobile radio transceiver,
          portable or handset, typically to the antenna connector. Note that a signal amplifier is not the same thing
          as a signal booster.

    Signal booster. A device at a fixed location which automatically receives, amplifies, and retransmits on a one-
          way or two-way basis, the signals received from base, fixed, mobile, and portable stations, with no change
          in frequency or authorized bandwidth. A signal booster may be either narrowband (Class A), in which case
          the booster amplifies only those discrete frequencies intended to be retransmitted, or broadband (Class
          B), in which case all signals within the passband of the signal booster filter are amplified.

    SMSA (Standard Metropolitan Statistical Area). A city of 50,000 or more population and the surrounding
         counties.

    Special industrial licensee. Persons regularly engaged in any of the following activities:

47 CFR 90.7 “Special industrial licensee” (enhanced display)                                               page 20 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                 47 CFR 90.7 “Special industrial licensee” (1)
Private Land Mobile Radio Services

           (1) The operation of farms, ranches, or similar land areas, for the quantity production of crops or plants;
               vines or trees (excluding forestry operations); or for the keeping, grazing or feeding of livestock for
               animal products, animal increase, or value enhancement;

           (2) Plowing, soil conditioning, seeding, fertilizing, or harvesting for agricultural activities;

           (3) Spraying or dusting of insecticides, herbicides, or fungicides, in areas other than enclosed structures;

           (4) Livestock breeding service;

           (5) The operation of a commercial business regularly engaged in the construction of roads, bridges,
               sewer systems, pipelines, airfields, or water, oil, gas, or power production, collection, or distribution
               systems. The construction of buildings is not included in this category;

           (6) The operation of mines for the recovery of solid fuels, minerals, metal, rock, sand and gravel from the
               earth or the sea, including the exploration for and development of mining properties;

           (7) Maintaining, patrolling or repairing gas or liquid transmission pipelines, tank cars, water or waste
               disposal wells, industrial storage tanks, or distribution systems of public utilities;

           (8) Acidizing, cementing, logging, perforating, or shooting activities, and services of a similar nature
               incident to the drilling of new oil or gas wells, or the maintenance of production from established
               wells;

           (9) Supplying chemicals, mud, tools, pipe, and other materials or equipment unique to the petroleum and
               gas production industry, as the primary activity of the applicant if delivery, installation or application
               of these materials requires the use of specifically fitted conveyances;

          (10) The delivery of ice or fuel to the consumer for heating, lighting, refrigeration or power generation
               purposes, by means other than pipelines or railroads when such products are not to be resold
               following their delivery; or

          (11) The delivery and pouring of ready mixed concrete or hot asphalt mix.

    Specialized Mobile Radio system. A radio system in which licensees provide land mobile communications
          services (other than radiolocation services) in the 800 MHz and 900 MHz bands on a commercial basis to
          entities eligible to be licensed under this part, Federal Government entities, and individuals.

    State. Any of the 50 United States, the District of Columbia, the Commonwealth of Puerto Rico, the
           Commonwealth of the Northern Mariana Islands, the U.S. Virgin Islands, American Samoa, and Guam.

    Station authorization. A license issued by the Commission for the operation of a radio station.

    Taxicab licensee. Persons regularly engaged in furnishing to the public for hire a nonscheduled passenger land
          transportation service (which may also include the occasional transport of small items of property) not
          operated over a regular route or between established terminals.

    Telecommand. The transmission of non-voice signals for the purpose of remotely controlling a device.

    Telemetering (also telemetry). The transmission of non-voice signals for the purpose of automatically indicating
         or recording measurements at a distance from the measuring instrument.

    Telephone maintenance licensee. Communications common carriers engaged in the provision of landline local
          exchange telephone service, or inter-exchange communications service, and radio communications
          common carriers authorized under part 21 of this chapter. Resellers that do not own or control
          transmission facilities are not included in this category.

47 CFR 90.7 “Telephone maintenance licensee” (enhanced display)                                                page 21 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                     47 CFR 90.7 “Transitioned market”
Private Land Mobile Radio Services

    Transitioned market. A geographic area in which the 900 MHz band has been reconfigured to consist of a 900
          MHz broadband license in the 900 MHz broadband segment and two 900 MHz narrowband segments
          pursuant to part 27 of this chapter.

    Travelers' information station. A base station in the Public Safety Pool used to transmit non-commercial, voice
          information pertaining to traffic and road conditions, traffic hazard and traveler advisories, directions,
          availability of lodging, rest stops, and service stations, and descriptions of local points of interest.

    Trunk group. All of the trunks of a given type of characteristic that extend between two switching points.

    Trunk (telephony). A one or two-way channel provided as a common traffic artery between switching equipment.

    Trunked radio system. A radio system employing technology that provides the ability to search two or more
          available communications paths and automatically assigns an open communications path to a user.

    Universal Licensing System (ULS). The consolidated database, application filing system and processing system
          for all Wireless Telecommunications Services. The ULS offers Wireless Telecommunications Bureau
          (WTB) applicants and the general public electronic filing of all applications requests, and full public
          access to all WTB licensing data.

    Urbanized area. A city and the surrounding closely settled territories.

[43 FR 54791, Nov. 22, 1978]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.7, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

Subpart B—Public Safety Radio Pool

Source: 62 FR 18845, Apr. 17, 1997, unless otherwise noted.

§ 90.15 Scope.
The Public Safety Radio Pool covers the licensing of the radio communications of governmental entities and the
following category of activities: Medical services, rescue organizations, veterinarians, persons with disabilities,
disaster relief organizations, school buses, beach patrols, establishments in isolated places, communications
standby facilities, and emergency repair of public communications facilities. Entities not meeting these eligibility
criteria may also be licensed in the Public Safety Radio Pool solely to provide service to eligibles on one-way paging-
only frequencies below 800 MHz, i.e., those frequencies with the assignment limitations appearing at § 90.20(d)(13)
or (d)(60). Private carrier systems licensed on other channels prior to June 1, 1990, may continue to provide radio
communications service to eligibles. Rules as to eligibility for licensing, frequencies available, permissible
communications and classes and number of stations, and any special requirements are set forth in the following
sections.

§ 90.16 Public Safety National Plan.
The Commission has established a National Plan which specifies special policies and procedures governing the
Public Safety Pool (formally Public Safety Radio Services and the Special Emergency Radio Service). The National
Plan is contained in the Report and Order in General Docket No. 87–112. The principal spectrum resource for the
National Plan is the 806–809 MHz and the 851–854 MHz bands at locations farther then 110 km (68.4 miles) from
47 CFR 90.16 (enhanced display)                                                                          page 22 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.19
Private Land Mobile Radio Services

the U.S./Mexico border and 140 km (87 miles) from the U.S./Canadian border (“border regions”). In the border
regions, the principal spectrum for the National Plan may be different. The National plan establishes planning
regions covering all parts of the United States, Puerto Rico, and the U.S. Virgin Islands. No assignments will be
made in the spectrum designated for the National Plan until a regional plan for the area has been accepted by the
Commission.

[69 FR 67837, Nov. 22, 2004]

§ 90.19 Nationwide Public Safety Broadband Network.
Pursuant to the Middle Class Tax Relief and Job Creation Act of 2012, Public Law 112–96, 126 Stat. 156 (2012), the
758–769 MHz and 788–799 MHz bands are allocated for use by the First Responder Network Authority to deploy a
nationwide public safety broadband network as prescribed by statute.

[77 FR 62462, Oct. 15, 2012]

§ 90.20 Public Safety Pool.
     (a) Eligibility. The following are eligible to hold authorizations in the Public Safety Pool.

           (1) Any territory, possession, state, city, county, town or similar governmental entity is eligible to hold
               authorizations in the Public Safety Pool to operate radio stations for transmission of
               communications essential to official activities of the licensee, including:

                 (i)   A district and an authority;

                 (ii) A governmental institution authorized by law to provide its own police protection;

                (iii) Persons or entities engaged in the provision of basic or advanced life support services on an
                      ongoing basis are eligible to hold authorization to operate stations for transmission of
                      communications essential for the delivery or rendition of emergency medical services for the
                      provision of basic or advanced life support. Applications submitted by persons or organizations
                      (governmental or otherwise) other than the governmental body having jurisdiction over the
                      state's emergency medical service plans must be accompanied by a statement prepared by the
                      governmental body having jurisdiction over the state's emergency medical services plan
                      indicating that the applicant is included in the state's emergency plan or otherwise supporting
                      the application;

                (iv) Governmental entities and governmental agencies for their own medical activities; and

                 (v) Governmental entities and governmental agencies for providing medical services
                     communications to other eligible persons through direct participation in and direct operational
                     control of the system, such as through central dispatch service.

           (2) Persons or organizations other than governmental entities are eligible to hold authorizations in the
               Public Safety Pool to operate radio stations for transmission of communications, as listed below.
               When requesting frequencies not designated by a “PS” in the coordinator column of the frequency
               table in paragraph (c)(3) of this section, applications must be accompanied by a statement from the
               governmental entity having legal jurisdiction over the area to be served, supporting the request:

                 (i)   Persons or organizations charged with specific fire protection activities;

                 (ii) Persons or organizations charged with specific forestry-conservation activities;
47 CFR 90.20(a)(2)(ii) (enhanced display)                                                                    page 23 of 516
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                                                                                                        47 CFR 90.20(a)(2)(iii)
Private Land Mobile Radio Services

                (iii) Persons or organizations, listed below, engaged in the delivery or rendition of medical services
                      to the public and on a secondary basis, for transmission of messages related to the efficient
                      administration of organizations and facilities engaged in medical services operations:

                      (A) Hospital establishments that offer services, facilities, and beds for use beyond 24 hours in
                          rendering medical treatment;

                      (B) Institutions and organizations regularly engaged in providing medical services through
                          clinics, public health facilities, and similar establishments;

                      (C) Ambulance companies regularly engaged in providing medical ambulance services;

                      (D) Rescue organizations for the limited purpose of participation in providing medical
                          services;

                      (E) Associations comprised of two or more of the organizations eligible under paragraph
                          (a)(2)(iii) (A), (B), (C), and (D) of this section, for the purpose of active participation in and
                          direct operational control of the medical services communication activities of such
                          organizations; or

                      (F) Physicians, schools of medicine, oral surgeons, and associations of physicians or oral
                          surgeons;

                (iv) Persons or organizations operating a rescue squad for transmission of messages pertaining to
                     the safety of life or property and urgent messages necessary for the rendition of an efficient
                     emergency rescue service.

                      (A) Each rescue squad will normally be authorized to operate one base station, and a number
                          of mobile units (excluding hand carried mobile units) not exceeding the number of
                          vehicles actually used in emergency rescue operations.

                      (B) In addition, each rescue squad will be authorized to operate a number of hand carried
                          mobile units not exceeding two such units for each radio equipped vehicle actually used in
                          emergency rescue operations.

                (v) Persons with disabilities. The initial application from a person claiming eligibility under this
                    paragraph shall be accompanied by a statement from a physician attesting to the condition of
                    the applicant or the applicant's child (or ward in case of guardianship).

                      (A) Any person having a hearing deficiency such that average hearing threshold levels are 90
                          dB above ANSI (American National Standards Institute) 1969 or ISO (International
                          Standards Organization) 1964 levels and such other persons who submit medical
                          certification of similar hearing deficiency.

                      (B) Any person having visual acuity corrected to no better than 20/200 in the better eye or
                          having a field of vision of less than 20 degrees.

                      (C) Any person, who, through loss of limbs or motor function, is confined to a wheelchair, or is
                          non-ambulatory.

                      (D) Any person actively awaiting an organ transplant.

                      (E) Parents or guardians of persons under 18 years eligible under paragraphs (a)(2)(v)(A),
                          (a)(2)(v)(B), (a)(2)(v)(C) of this section, or institutions devoted to the care or training of
                          those persons.

47 CFR 90.20(a)(2)(v)(E) (enhanced display)                                                                    page 24 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.20(a)(2)(vi)
Private Land Mobile Radio Services

                (vi) A veterinarian, veterinary clinic, or a school of veterinary medicine for the transmission of
                     messages pertaining to the care and treatment of animals. Each licensee may be authorized to
                     operate one base station and two mobile units. Additional base stations or mobile units will be
                     authorized only on a showing of need.

                (vii) Organizations established for disaster relief purposes having an emergency radio
                      communications plan for the transmission of communications relating to the safety of life or
                      property, the establishment and maintenance of temporary relief facilities, and the alleviation of
                      the emergency situation during periods of actual or impending emergency, or disaster, and until
                      substantially normal conditions are restored. In addition, the stations may be used for training
                      exercises, incidental to the emergency communications plan, and for operational
                      communications of the disaster relief organization or its chapter affiliates. The initial
                      application from a disaster relief organization shall be accompanied by a copy of the charter or
                      other authority under which the organization was established and a copy of its communications
                      plan. The plan shall fully describe the operation of the radio facilities and describe the method
                      of integration into other communications facilities which normally would be available to assist
                      in the alleviation of the emergency condition.

                (viii) Persons or organizations operating school buses on a regular basis over regular routes for the
                       transmission of messages pertaining to either the efficient operation of the school bus service
                       or the safety or general welfare of the students they are engaged in transporting. Each school
                       bus operator may be authorized to operate one base station and a number of mobile units not
                       in excess of the total of the number of buses and maintenance vehicles regularly engaged in
                       the school bus operation. Additional base stations or mobile units will be authorized only in
                       exceptional circumstances when the applicant can show a specific need.

                (ix) Persons or organizations operating beach patrols having responsibility for life-saving activities
                     for the transmission of messages required for the safety of life or property.

                (x) Persons or organizations maintaining establishment in isolated areas where public
                    communications facilities are not available and where the use of radio is the only feasible
                    means of establishing communication with a center of population, or other point from which
                    emergency assistance might be obtained if needed, for the transmission of messages only
                    during an actual or impending emergency endangering life, health or property for the
                    transmission of essential communications arising from the emergency. The transmission of
                    routine or non-emergency communications is strictly prohibited.

                      (A) Special eligibility showing. The initial application requesting a station authorization for an
                          establishment in an isolated area shall be accompanied by a statement describing the
                          status of public communication facilities in the area of the applicant's establishment; the
                          results of any attempts the applicant may have made to obtain public communication
                          service, and; in the event radio communications service is to be furnished under paragraph
                          (a)(2)(x)(C)(2) of this section, a copy of the agreement involved must be submitted.

                      (B) Class and number of stations available. Persons or organizations in this category may be
                          authorized to operate not more than one fixed station at any isolated establishment and
                          not more than one fixed station in a center of population.

                      (C) Communication service rendered and received.

47 CFR 90.20(a)(2)(x)(C) (enhanced display)                                                                page 25 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.20(a)(2)(x)(C)(1)
Private Land Mobile Radio Services

                             (1) The licensee of a station at any establishment in an isolated area shall make the
                                 communication facilities of such station available at no charge to any person
                                 desiring the transmission of any communication permitted by paragraph (a) of this
                                 section.

                             (2) For the purpose of providing the communications link desired the licensee of a
                                 station at an establishment in an isolated area either may be the licensee of a similar
                                 station at another location or may obtain communication service under a mutual
                                 agreement from the licensee of any station in the Public Safety Pool or any other
                                 station which is authorized to communicate with the fixed station.

                (xi) A communications common carrier operating communications circuits that normally carry
                     essential communication of such a nature that their disruption would endanger life or public
                     property is eligible to hold authorizations for standby radio facilities for the transmission of
                     messages only during periods when the normal circuits are inoperative due to circumstances
                     beyond the control of the user. During such periods the radio facilities may be used to transmit
                     any communication which would be carried by the regular circuit. Initial applications for
                     authorization to operate a standby radio facility must include a statement describing radio
                     communication facilities desired, the proposed method of operation, a description of the
                     messages normally being carried, and an explanation of how their disruption will endanger life
                     or public property.

                (xii) Communications common carriers for radio facilities to be used in effecting expeditious repairs
                      to interruption of public communications facilities where such interruptions have resulted in
                      disabling intercity circuits or service to a multiplicity of subscribers in a general area. Stations
                      authorized under this section may be used only when no other means of communication is
                      readily available, for the transmission of messages relating to the safety of life and property
                      and messages which are necessary for the efficient restoration of the public communication
                      facilities which have been disrupted.

                (xiii) Persons or entities engaged in the provision of basic or advanced life support services on an
                       ongoing basis are eligible to hold authorization to operate stations for transmission of
                       communications essential for the delivery or rendition of emergency medical services for the
                       provision of basic or advanced life support. Applications submitted by persons or organizations
                       (governmental or otherwise) other than the governmental body having jurisdiction over the
                       state's emergency medical service plans must be accompanied by a statement prepared by the
                       governmental body having jurisdiction over the state's emergency medical services plan
                       indicating that the applicant is included in the state's emergency plan or otherwise supporting
                       the application.

                (xiv)

                        (A) Railroad police officers are a class of users eligible to operate on the nationwide
                            interoperability and mutual aid channels listed in 90.20(i) provided their employer holds a
                            Private Land Mobile Radio (PLMR) license of any radio category, including Industrial/
                            Business (I/B). Eligible users include full and part time railroad police officers, Amtrak
                            employees who qualify as railroad police officers under this subsection, Alaska Railroad
                            employees who qualify as railroad police officers under this subsection, freight railroad
                            employees who qualify as railroad police officers under this subsection, and passenger
                            transit lines police officers who qualify as railroad police officers under this subsection.
                            Railroads and railroad police departments may obtain licenses for the nationwide
47 CFR 90.20(a)(2)(xiv)(A) (enhanced display)                                                                page 26 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.20(a)(2)(xiv)(A)(1)
Private Land Mobile Radio Services

                           interoperability and mutual aid channels on behalf of railroad police officers in their
                           employ. Employers of railroad police officers must obtain concurrence from the relevant
                           state interoperability coordinator or regional planning committee before applying for a
                           license to the Federal Communications Commission or operating on the interoperability
                           and mutual aid channels.

                            (1) Railroad police officer means a peace officer who is commissioned in his or her state
                                of legal residence or state of primary employment and employed, full or part time, by
                                a railroad to enforce state laws for the protection of railroad property, personnel,
                                passengers, and/or cargo.

                            (2) Commissioned means that a state official has certified or otherwise designated a
                                railroad employee as qualified under the licensing requirements of that state to act
                                as a railroad police officer in that state.

                            (3) Property means rights-of-way, easements, appurtenant property, equipment, cargo,
                                facilities, and buildings and other structures owned, leased, operated, maintained, or
                                transported by a railroad.

                            (4) Railroad means each class of freight railroad (i.e. Class I, II, III); Amtrak, Alaska
                                Railroad, commuter railroads and passenger transit lines.

                            (5) The word state, as used herein, encompasses states, territories and the District of
                                Columbia.

                      (B) Eligibility for licensing on the 700 MHz narrowband interoperability channels is restricted
                          to entities that have as their sole or principal purpose the provision of public safety
                          services.

     (b) International police radiocommunication. Police licensees which are located in close proximity to the
         borders of the United States may be authorized to communicate internationally. Request for such
         authority shall be written and signed and submitted in duplicate. The request shall include information as
         to the station with which communication will be conducted, and the frequency, power, emission, etc., that
         will be used. If authorized, such international communication must be conducted in accordance with
         Article 5 of the Inter-American Radio Agreement, Washington, DC, 1949, which reads as follows:

     Article 5. Police radio stations. When the American countries authorize their police radio stations to exchange
     emergency information by radio with similar stations of another country, the following rules shall be applied.

     (a) Only police radio stations located close to the boundaries of contiguous countries shall be allowed to
     exchange this information.

     (b) In general, only important police messages shall be handled, such as those which would lose their value,
     because of slowness and time limitations if sent on other communication systems.

     (c) Frequencies used for radiotelephone communications with mobile police units shall not be used for
     radiotelegraph communications.

     (d) Radiotelephone communications shall be conducted only on frequencies assigned for radiotelephony.

47 CFR 90.20(b) (enhanced display)                                                                             page 27 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.20(c)
Private Land Mobile Radio Services

     (e) Radiotelegraph communications shall be conducted on the following frequencies: 2804 kHz calling, 2808
     kHz working, 2812 kHz working, 5195 kHz day calling, 5185 kHz day working, 5140 kHz day working.

     (f) The characteristics of police radio stations authorized to exchange information shall be notified to the
     International Telecommunication Union, Geneva, Switzerland.

     (g) The abbreviations contained in Appendix 9 of the Atlantic City Radio Regulations shall be used to the
     greatest possible extent. Service indications are as follows: “P”, priority, for messages that are to be sent
     immediately, regardless of the number of other messages on file. If no service indication is given, the
     messages are to be transmitted in the order of receipt.

     (h) The message shall contain the preamble, address, text and signature, as follows:

     Preamble. The preamble of the message shall consist of the following: The serial number preceded by the
     letters “NR”, service indications, as appropriate; the group count according to standard cable count system; the
     letters “CK”, followed by numerals indicating the number of words contained in the text of the message: Office
     and country of origin (not abbreviations): Day, month, and hour of filing;

     Address. The address must be as complete as possible and shall include the name of the addressee with any
     supplementary particulars necessary for immediate delivery of the message;

     Text. The text may be either in plain language or code;

     Signature. The signature shall include the name and title of the person originating the message.

     (c) Public Safety frequencies.

           (1) The following table indicates frequencies available for assignment to Public Safety stations, together
               with the class of station(s) to which they are normally assigned, the specific assignment limitations
               which are explained in paragraph (d) of this section, and the certified frequency coordinator for each
               frequency:

           (2)

                 (i)   The letter symbol(s) listed in the Coordinator column of the frequency table in paragraph (c)(3)
                       of this section specifies the frequency coordinator(s) for each frequency as follows:

                 PF—Fire Coordinator

                 PH—Highway Maintenance Coordinator

                 PM—Emergency Medical Coordinator

                 PO—Forestry-Conservation Coordinator

                 PP—Police Coordinator

                 PS—Special Emergency Coordinator

47 CFR 90.20(c)(2)(i) (enhanced display)                                                                   page 28 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.20(c)(2)(ii)
Private Land Mobile Radio Services

                PX—Any Public Safety Coordinator, except the Special Emergency Coordinator

                (ii) Frequencies without any coordinator specified may be coordinated by any coordinator certified
                     in the Public Safety Pool.

           (3) Frequencies.

                                               Public Safety Pool Frequency Table

                   Frequency or band                 Class of station(s)             Limitations      Coordinator
                                                                  Kilohertz
                 530 to 1700             Base (T.I.S.)                        1                    PX
                 1610                    Base (T.I.S.)                        1                    PX
                 1722                    ......do                             2, 3                 PP
                 1730                    ......do                             2, 3                 PP
                 2212                    ......do                             4                    PO
                 2226                    ......do                             4                    PO
                 2236                    ......do                             4                    PO
                 2244                    ......do                             4                    PO
                 2366                    ......do                             2, 4                 PP
                 2382                    ......do                             2                    PP
                 2390                    ......do                             2, 4                 PP
                 2406                    ......do                             2                    PP
                 2430                    ......do                             2                    PP
                 2442                    ......do                             2                    PP
                 2450                    ......do                             2                    PP
                 2458                    ......do                             2                    PP
                 2482                    ......do                             2                    PP
                 2490                    ......do                             2, 3                 PP
                 2726                    ......do                             5                    PX, PS
                 3201                    ......do                                                  PS
                 2000 to 3000            Fixed                                75                   PS
                 2000 to 10,000          Fixed, base, or mobile               6, 89                PX.
                                                                  Megahertz
                 30.86                   Base or mobile                       7                    PO
                 30.90                   ......do                             7                    PO
                 30.94                   ......do                             7                    PO
                 30.98                   ......do                             7                    PO
                 31.02                   ......do                             7                    PO
                 31.06                   ......do                             7, 8, 9              PO
                 31.10                   ......do                             7, 8, 9              PO
                 31.14                   ......do                             7, 8, 9              PO

47 CFR 90.20(c)(3) (enhanced display)                                                                     page 29 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)          Limitations        Coordinator
                 31.18                   ......do                         8, 9                 PO
                 31.22                   ......do                         8, 9                 PO
                 31.26                   ......do                         8, 9                 PO
                 31.30                   ......do                         8, 9                 PO
                 31.34                   ......do                         8, 9                 PO
                 31.38                   ......do                         8, 9                 PO
                 31.42                   ......do                         8, 9                 PO
                 31.46                   ......do                         8, 9                 PO
                 31.50                   ......do                         8, 9                 PO
                 31.54                   ......do                         8, 9                 PO
                 31.58                   ......do                         8, 9                 PO
                 31.62                   ......do                         8, 9                 PO
                 31.66                   ......do                         8, 9                 PO
                 31.70                   ......do                         8, 9                 PO
                 31.74                   ......do                         8, 9                 PO
                 31.78                   ......do                         8, 9                 PO
                 31.82                   ......do                         8, 9                 PO
                 31.86                   ......do                         8, 9                 PO
                 31.90                   ......do                         8, 9                 PO
                 31.94                   ......do                         8, 9                 PO
                 31.98                   ......do                         8, 9                 PO
                 33.02                   ......do                         10                   PH, PS
                 33.04                   ......do                                              PS
                 33.06                   ......do                         10                   PH, PS
                 33.08                   ......do                                              PS
                 33.10                   ......do                         10                   PH, PS
                 33.42                   Mobile or fixed                  11                   PF
                 33.44                   Base or mobile                                        PF
                 33.46                   Mobile                                                PF
                 33.48                   Base or mobile                                        PF
                 33.50                   Mobile                                                PF
                 33.52                   Base or mobile                                        PF
                 33.54                   Mobile                                                PF
                 33.56                   Base or mobile                                        PF
                 33.58                   Mobile                                                PF
                 33.60                   Base or mobile                                        PF
                 33.62                   Mobile                                                PF
                 33.64                   Base or mobile                                        PF
                 33.66                   Mobile                                                PF
                 33.68                   Base or mobile                                        PF

47 CFR 90.20(c)(3) (enhanced display)                                                                 page 30 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 33.70                   ......do                                            PF
                 33.72                   ......do                                            PF
                 33.74                   ......do                                            PF
                 33.76                   ......do                                            PF
                 33.78                   ......do                                            PF
                 33.80                   ......do                                            PF
                 33.82                   ......do                                            PF
                 33.84                   ......do                                            PF
                 33.86                   ......do                                            PF
                 33.88                   ......do                                            PF
                 33.90                   ......do                                            PF
                 33.92                   ......do                                            PF
                 33.94                   ......do                                            PF
                 33.96                   ......do                                            PF
                 33.98                   ......do                                            PF
                 35.02                   Mobile                           12, 78             PS
                 35.64                   Base                             13                 PS
                 35.68                   ......do                         13                 PS
                 37.02                   Mobile                                              PP
                 37.04                   Base or mobile                                      PP
                 37.06                   ......do                                            PP
                 37.08                   ......do                                            PP
                 37.10                   ......do                                            PX
                 37.12                   ......do                                            PP
                 37.14                   ......do                                            PP
                 37.16                   ......do                                            PP
                 37.18                   ......do                                            PX
                 37.20                   ......do                                            PP
                 37.22                   ......do                                            PP
                 37.24                   ......do                                            PP
                 37.26                   ......do                                            PX
                 37.28                   ......do                                            PP
                 37.30                   ......do                                            PP
                 37.32                   ......do                                            PP
                 37.34                   Mobile                                              PP
                 37.36                   Base or mobile                                      PP
                 37.38                   Mobile                                              PP
                 37.40                   Base or mobile                                      PP
                 37.42                   Mobile                                              PP
                 37.90                   Base or mobile                   10                 PH, PS

47 CFR 90.20(c)(3) (enhanced display)                                                                page 31 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations     Coordinator
                 37.92                   ......do                                            PH
                 37.94                   ......do                         10                 PH, PS
                 37.96                   ......do                                            PH
                 37.98                   ......do                         10                 PH, PS
                 39.02                   ......do                                            PP
                 39.04                   ......do                                            PP
                 39.06                   ......do                         14                 PX
                 39.08                   ......do                                            PP
                 39.10                   ......do                                            PX
                 39.12                   ......do                                            PP
                 39.14                   ......do                                            PP
                 39.16                   ......do                                            PP
                 39.18                   ......do                                            PX
                 39.20                   ......do                                            PP
                 39.22                   ......do                                            PP
                 39.24                   ......do                                            PP
                 39.26                   Mobile                                              PP
                 39.28                   Base or mobile                                      PP
                 39.30                   Mobile                                              PP
                 39.32                   Base or mobile                                      PP
                 39.34                   Mobile                                              PP
                 39.36                   Base or mobile                                      PP
                 39.38                   Mobile                                              PP
                 39.40                   Base or mobile                                      PP
                 39.42                   ......do                                            PP
                 39.44                   ......do                                            PP
                 39.46                   ......do                         15                 PP
                 39.48                   ......do                                            PP
                 39.50                   ......do                                            PX
                 39.52                   ......do                                            PP
                 39.54                   ......do                                            PP
                 39.56                   ......do                                            PP
                 39.58                   ......do                                            PX
                 39.60                   ......do                                            PP
                 39.62                   ......do                                            PP
                 39.64                   ......do                                            PP
                 39.66                   Mobile                                              PP
                 39.68                   Base or mobile                                      PP
                 39.70                   Mobile                                              PP
                 39.72                   Base or mobile                                      PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 32 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                             47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)       Limitations    Coordinator
                 39.74                   Mobile                                             PP
                 39.76                   Base or mobile                                     PP
                 39.78                   Mobile                                             PP
                 39.80                   Base or mobile                                     PP
                 39.82                   ......do                                           PX
                 39.84                   ......do                                           PP
                 39.86                   ......do                                           PP
                 39.88                   ......do                                           PP
                 39.90                   ......do                                           PX
                 39.92                   ......do                                           PP
                 39.94                   ......do                                           PP
                 39.96                   ......do                                           PP
                 39.98                   ......do                                           PX
                 42.02                   ......do                         2, 3, 16          PP
                 42.04                   ......do                         2, 3, 16          PP
                 42.06                   ......do                         2, 3, 16          PP
                 42.08                   ......do                         2, 3, 16          PP
                 42.10                   ......do                         2, 3, 16          PP
                 42.12                   ......do                         2, 3, 16          PP
                 42.14                   ......do                         2, 3, 16          PP
                 42.16                   ......do                         2, 3, 16          PP
                 42.18                   Mobile                           2, 16             PP
                 42.20                   ......do                         2, 16             PP
                 42.22                   ......do                         2, 16             PP
                 42.24                   ......do                         2, 16             PP
                 42.26                   ......do                         2, 16             PP
                 42.28                   ......do                         2, 16             PP
                 42.30                   ......do                         2, 16             PP
                 42.32                   Base or mobile                   2, 3, 16          PP
                 42.34                   ......do                         2, 3, 16          PP
                 42.36                   ......do                         2, 3, 16          PP
                 42.38                   ......do                         2, 3, 16          PP
                 42.40                   ......do                         2, 3, 16, 17      PP
                 42.42                   ......do                         2, 3, 16          PP
                 42.44                   ......do                         2, 3, 16          PP
                 42.46                   ......do                         2, 3, 16          PP
                 42.48                   ......do                         2, 3, 16          PP
                 42.50                   ......do                         2, 3, 16          PP
                 42.52                   ......do                         2, 3, 16          PP
                 42.54                   ......do                         2, 3, 16          PP

47 CFR 90.20(c)(3) (enhanced display)                                                            page 33 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 42.56                   ......do                         2, 3, 16           PP
                 42.58                   ......do                         2, 3, 16           PP
                 42.60                   ......do                         2, 3, 16           PP
                 42.62                   ......do                         2, 3, 16           PP
                 42.64                   ......do                         2, 3, 16           PP
                 42.66                   Mobile                           2, 16              PP
                 42.68                   ......do                         2, 16              PP
                 42.70                   ......do                         2, 16              PP
                 42.72                   ......do                         2, 16              PP
                 42.74                   ......do                         2, 16              PP
                 42.76                   ......do                         2, 16              PP
                 42.78                   ......do                         2, 16              PP
                 42.80                   Base or mobile                   13                 PP
                 42.82                   ......do                         2, 3, 16           PP
                 42.84                   ......do                         2, 3, 16           PP
                 42.86                   ......do                         2, 3, 16           PP
                 42.88                   ......do                         2, 3, 16           PP
                 42.90                   ......do                         2, 3, 16           PP
                 42.92                   ......do                         2, 3, 16           PP
                 42.94                   ......do                         2, 3, 16           PP
                 43.64                   Base                             13, 18             PS
                 43.68                   ......do                         13                 PS
                 44.62                   Base or mobile                   2, 3, 16           PP
                 44.64                   ......do                                            PO
                 44.66                   ......do                         2, 3, 16           PP
                 44.68                   ......do                                            PO
                 44.70                   ......do                         2, 3, 16           PP
                 44.72                   ......do                                            PO
                 44.74                   ......do                         2, 3, 16           PP
                 44.76                   ......do                                            PO
                 44.78                   Mobile                           2, 16              PP
                 44.80                   Base or mobile                                      PO
                 44.82                   Mobile                           2, 16              PP
                 44.84                   Base or mobile                                      PO
                 44.86                   Mobile                           2, 16              PP
                 44.88                   Base or mobile                                      PO
                 44.90                   Mobile                           2, 16              PP
                 44.92                   Base or mobile                                      PO
                 44.94                   ......do                         2, 3, 16           PP
                 44.96                   ......do                                            PO

47 CFR 90.20(c)(3) (enhanced display)                                                             page 34 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                             47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)       Limitations    Coordinator
                 44.98                   ......do                         2, 3, 16          PP
                 45.00                   ......do                                           PO
                 45.02                   ......do                         2, 3, 16          PP
                 45.04                   ......do                                           PO
                 45.06                   ......do                         2, 3, 16          PP
                 45.08                   ......do                                           PX
                 45.10                   ......do                                           PP
                 45.12                   ......do                                           PX
                 45.14                   ......do                                           PP
                 45.16                   ......do                                           PX
                 45.18                   ......do                                           PP
                 45.20                   ......do                                           PX
                 45.22                   ......do                                           PP
                 45.24                   ......do                                           PX
                 45.26                   Mobile                                             PP
                 45.28                   Base or mobile                                     PX
                 45.30                   Mobile                                             PP
                 45.32                   Base or mobile                                     PX
                 45.34                   Mobile                                             PP
                 45.36                   Base or mobile                                     PX
                 45.38                   Mobile                                             PP
                 45.40                   Base or mobile                                     PX
                 45.42                   ......do                                           PP
                 45.44                   ......do                                           PX
                 45.46                   ......do                                           PP
                 45.48                   ......do                                           PX
                 45.50                   ......do                                           PP
                 45.52                   ......do                                           PX
                 45.54                   ......do                                           PP
                 45.56                   ......do                                           PX
                 45.58                   ......do                                           PP
                 45.60                   ......do                                           PX
                 45.62                   ......do                                           PP
                 45.64                   ......do                                           PX
                 45.66                   ......do                                           PP
                 45.68                   ......do                                           PH
                 45.70                   ......do                                           PP
                 45.72                   ......do                                           PH
                 45.74                   Mobile                                             PP
                 45.76                   Base or mobile                                     PH

47 CFR 90.20(c)(3) (enhanced display)                                                            page 35 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 45.78                   Mobile                                              PP
                 45.80                   Base or mobile                                      PH
                 45.82                   Mobile                                              PP
                 45.84                   Base or mobile                                      PH
                 45.86                   ......do                         15                 PP
                 45.88                   ......do                         19                 PF
                 45.90                   ......do                         20                 PP
                 45.92                   ......do                         10                 PS
                 45.94                   ......do                                            PP
                 45.96                   ......do                         10                 PS
                 45.98                   ......do                                            PP
                 46.00                   ......do                         10                 PS
                 46.02                   ......do                                            PP
                 46.04                   ......do                         10                 PS
                 46.06                   ......do                                            PF
                 46.08                   ......do                                            PF
                 46.10                   ......do                                            PF
                 46.12                   ......do                                            PF
                 46.14                   ......do                                            PF
                 46.16                   ......do                                            PF
                 46.18                   ......do                                            PF
                 46.20                   ......do                                            PF
                 46.22                   Mobile                                              PF
                 46.24                   ......do                                            PF
                 46.26                   ......do                                            PF
                 46.28                   ......do                                            PF
                 46.30                   Mobile or fixed                  11                 PF
                 46.32                   Mobile                                              PF
                 46.34                   ......do                                            PF
                 46.36                   Base or mobile                                      PF
                 46.38                   ......do                                            PF
                 46.40                   ......do                                            PF
                 46.42                   ......do                                            PF
                 46.44                   ......do                                            PF
                 46.46                   ......do                                            PF
                 46.48                   ......do                                            PF
                 46.50                   ......do                                            PF
                 46.52                   ......do                                            PX
                 46.54                   ......do                                            PX
                 46.56                   ......do                                            PX

47 CFR 90.20(c)(3) (enhanced display)                                                               page 36 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 46.58                   ......do                                            PX
                 47.02                   ......do                         21, 22             PH
                 47.04                   ......do                         21, 22             PH
                 47.06                   ......do                         21, 22             PH
                 47.08                   ......do                         21, 22             PH
                 47.10                   ......do                         21, 22             PH
                 47.12                   ......do                         21, 22             PH
                 47.14                   ......do                         21, 22             PH
                 47.16                   ......do                         21, 22             PH
                 47.18                   ......do                         21, 22             PH
                 47.20                   ......do                         21, 22             PH
                 47.22                   ......do                         21, 22             PH
                 47.24                   ......do                         21, 22             PH
                 47.26                   ......do                         21, 22             PH
                 47.28                   ......do                         21, 22             PH
                 47.30                   ......do                         21, 22             PH
                 47.32                   ......do                         21, 22             PH
                 47.34                   ......do                         21, 22             PH
                 47.36                   ......do                         21, 22             PH
                 47.38                   ......do                         21, 22             PH
                 47.40                   ......do                         21, 22             PH
                 47.42                   ......do                         10, 23             PS
                 47.46                   ......do                         10                 PS
                 47.50                   ......do                         10                 PS
                 47.54                   ......do                         10                 PS
                 47.58                   ......do                         10                 PS
                 47.62                   ......do                         10                 PS
                 47.66                   ......do                         10                 PS
                 72.00 to 76.00          Operational fixed                24
                 72.44                   Mobile                           25                 PF
                 72.48                   ......do                         25                 PF
                 72.52                   ......do                         25                 PF
                 72.56                   ......do                         25                 PF
                 72.6                    ......do                         25                 PF
                 75.44                   ......do                         25                 PF
                 75.48                   ......do                         25                 PF
                 75.52                   ......do                         25                 PF
                 75.56                   ......do                         25                 PF
                 75.6                    ......do                         25                 PF
                 150 to 170              Base or mobile                   26

47 CFR 90.20(c)(3) (enhanced display)                                                               page 37 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations     Coordinator
                 150.775                 Mobile                           87                 PM.
                 150.7825                ......do                         88                 PM
                 150.790                 ....do                           87                 PM.
                 150.7975                ....do                           88                 PM.
                 150.805                 ......do                                            PM
                 150.995                 Base or mobile                   28                 PH
                 151.0025                ......do                         27, 28             PH
                 151.010                 ......do                         28                 PH
                 151.0175                ......do                         28                 PH
                 151.025                 ......do                         28                 PH
                 151.0325                ......do                         27, 28             PH
                 151.040                 ......do                         28                 PH
                 151.0475                ......do                         27, 28             PH
                 151.055                 ......do                         28                 PH
                 151.0625                ......do                         27, 28             PH
                 151.070                 ......do                         28                 PH
                 151.0775                ......do                         27, 28             PH
                 151.085                 ......do                         28                 PH
                 151.0925                ......do                         27, 28             PH
                 151.100                 ......do                         28                 PH
                 151.1075                ......do                         27, 28             PH
                 151.115                 ......do                         28                 PH
                 151.1225                ......do                         27, 28             PH
                 151.130                 ......do                         28, 81             PH
                 151.1375                ......do                         27, 28, 80         PH
                 151.145                 ......do                         28, 81             PO
                 151.1525                ......do                         27, 28             PO
                 151.160                 ......do                         28                 PO
                 151.1675                ......do                         27, 28             PO
                 151.175                 ......do                         28                 PO
                 151.1825                ......do                         27, 28             PO
                 151.190                 ......do                         28                 PO
                 151.1975                ......do                         27, 28             PO
                 151.205                 ......do                         28                 PO
                 151.2125                ......do                         27, 28             PO
                 151.220                 ......do                         28                 PO
                 151.2275                ......do                         27, 28             PO
                 151.235                 ......do                         28                 PO
                 151.2425                ......do                         27, 28             PO
                 151.250                 ......do                         28                 PO

47 CFR 90.20(c)(3) (enhanced display)                                                              page 38 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 151.2575                ......do                         27, 28             PO
                 151.265                 ......do                         28                 PO
                 151.2725                ......do                         27, 28             PO
                 151.280                 ......do                         28                 PO
                 151.2875                ......do                         27, 28             PO
                 151.295                 ......do                         28                 PO
                 151.3025                ......do                         27, 28             PO
                 151.310                 ......do                         28                 PO
                 151.3175                ......do                         27, 28             PO
                 151.325                 ......do                         28                 PO
                 151.3325                ......do                         27, 28             PO
                 151.340                 ......do                         28                 PO
                 151.3475                ......do                         27, 28             PO
                 151.355                 ......do                         28                 PO
                 151.3625                ......do                         27, 28             PO
                 151.370                 ......do                         28                 PO
                 151.3775                ......do                         2728               PO
                 151.385                 ......do                         28                 PO
                 151.3925                ......do                         27, 28             PO
                 151.400                 ......do                         28                 PO
                 151.4075                ......do                         27, 28             PO
                 151.415                 ......do                         28                 PO
                 151.4225                ......do                         27, 28             PO
                 151.430                 ......do                         28                 PO
                 151.4375                ......do                         27, 28             PO
                 151.445                 ......do                         28                 PO
                 151.4525                ......do                         27, 28             PO
                 151.460                 ......do                         28                 PO
                 151.4675                ......do                         27, 28             PO
                 151.475                 ......do                         28                 PO
                 151.4825                ......do                         27, 28             PO
                 151.490                 ......do                         7, 28              PO
                 151.4975                ......do                         7, 27, 28          PO
                 152.0075                Base                             13, 29, 30         PS
                 153.740                 Mobile                                              PX
                 153.7475                ......do                         27                 PX
                 153.755                 ......do                                            PX
                 153.7625                ......do                         27                 PX
                 153.770                 ......do                                            PF
                 153.7775                ......do                         27                 PF

47 CFR 90.20(c)(3) (enhanced display)                                                               page 39 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 153.785                 ......do                                            PX
                 153.7925                ......do                         27                 PX
                 153.800                 ......do                                            PX
                 153.8075                ......do                         27                 PX
                 153.815                 ......do                                            PX
                 153.8225                ......do                         27                 PX
                 153.830                 ......do                         31                 PF
                 153.8375                ......do                         27, 31             PF
                 153.845                 ......do                                            PX
                 153.8525                ......do                         27                 PX
                 153.860                 ......do                                            PX
                 153.8675                ......do                         27                 PX
                 153.875                 ......do                                            PX
                 153.8825                ......do                         27                 PX
                 153.890                 ......do                                            PF
                 153.8975                ......do                         27                 PF
                 153.905                 ......do                                            PX
                 153.9125                ......do                         27                 PX
                 153.920                 ......do                                            PX
                 153.9275                ......do                         27                 PX
                 153.935                 ......do                                            PX
                 153.9425                ......do                         27                 PX
                 153.950                 ......do                                            PF
                 153.9575                ......do                         27                 PF
                 153.965                 ......do                                            PX
                 153.9725                ......do                         27                 PX
                 153.980                 ......do                                            PX
                 153.9875                ......do                         27                 PX
                 153.995                 ......do                                            PX
                 154.0025                ......do                         27                 PX
                 154.010                 ......do                                            PF
                 154.0175                ......do                         27                 PF
                 154.025                 Base or mobile                                      PX
                 154.0325                ......do                         27                 PX
                 154.040                 ......do                         28                 PX
                 154.0475                ......do                         27, 28             PX
                 154.055                 ......do                         28                 PX
                 154.0625                ......do                         27, 28             PX
                 154.070                 Mobile                           28                 PF
                 154.0775                ......do                         27, 28             PF

47 CFR 90.20(c)(3) (enhanced display)                                                               page 40 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 154.085                 Base or mobile                   28                 PX
                 154.0925                ......do                         2728               PX
                 154.100                 ......do                         28                 PX
                 154.1075                ......do                         27, 28             PX
                 154.115                 ......do                         28                 PX
                 154.1225                ......do                         27, 28             PX
                 154.130                 ......do                         28                 PF
                 154.1375                ......do                         27, 28             PF
                 154.145                 ......do                         28                 PF
                 154.1525                ......do                         27, 28             PF
                 154.160                 ......do                         28                 PF
                 154.1675                ......do                         27, 28             PF
                 154.175                 ......do                         28                 PF
                 154.1825                ......do                         27, 28             PF
                 154.190                 ......do                         28                 PF
                 154.1975                ......do                         27, 28             PF
                 154.205                 ......do                         28                 PF
                 154.2125                ......do                         27, 28             PF
                 154.220                 ......do                         28                 PF
                 154.2275                ......do                         27, 28             PF
                 154.235                 ......do                         28                 PF
                 154.2425                ......do                         27. 28             PF
                 154.250                 ......do                         28                 PF
                 154.2575                ......do                         27, 28             PF
                 154.265                 ......do                         19, 28             PF
                 154.2725                ......do                         19, 27, 28         PF
                 154.280                 ......do                         19, 28             PF
                 154.2875                ......do                         19, 27, 28         PF
                 154.295                 ......do                         19, 28             PF
                 154.3025                ......do                         19, 27, 28         PF
                 154.310                 ......do                         28                 PF
                 154.3175                ......do                         27, 28             PF
                 154.325                 ......do                         28                 PF
                 154.3325                ......do                         27, 28             PF
                 154.340                 ......do                         28                 PF
                 154.3475                ......do                         27, 28             PF
                 154.355                 ......do                         28                 PF
                 154.3625                ......do                         27, 28             PF
                 154.370                 ......do                         28                 PF
                 154.3775                ......do                         27, 28             PF

47 CFR 90.20(c)(3) (enhanced display)                                                                page 41 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations          Coordinator
                 154.385                 ......do                         28                   PF
                 154.3925                ......do                         27, 28               PF
                 154.400                 ......do                         28                   PF
                 154.4075                ......do                         27, 28               PF
                 154.415                 ......do                         28                   PF
                 154.4225                ......do                         27, 28               PF
                 154.430                 ......do                         28                   PF
                 154.4375                ......do                         27, 28               PF
                 154.445                 ......do                         28, 81               PF
                 154.4525                ......do                         27, 28, 80.          PF
                 154.45625               Fixed or mobile                  32, 33, 34, 35       PX
                 154.46375               ......do                         33, 34, 35, 36, 37   PX
                 154.47125               ......do                         33, 34, 35, 36       PX
                 154.47875               ......do                         33, 34, 35, 37       PX
                 154.650                 Mobile                                                PP
                 154.6575                ......do                         27                   PP
                 154.665                 Base or mobile                   16                   PP
                 154.6725                ......do                         16, 27               PP
                 154.680                 ......do                         16                   PP
                 154.6875                ......do                         16, 27               PP
                 154.695                 ......do                         16                   PP
                 154.7025                ......do                         16, 27               PP
                 154.710                 Mobile                                                PP
                 154.7175                ......do                         27                   PP
                 154.725                 Base or mobile                                        PP
                 154.7325                ......do                         27                   PP
                 154.740                 ......do                                              PP
                 154.7475                ......do                         27                   PP
                 154.755                 ......do                                              PP
                 154.7625                ......do                         27                   PP
                 154.770                 Mobile                                                PP
                 154.7775                ......do                         27                   PP
                 154.785                 Base or mobile                                        PP
                 154.7925                ......do                         27                   PP
                 154.800                 ......do                                              PP
                 154.8075                ......do                         27                   PP
                 154.815                 ......do                                              PP
                 154.8225                ......do                         27                   PP
                 154.830                 Mobile                                                PP
                 154.8375                ......do                         27                   PP

47 CFR 90.20(c)(3) (enhanced display)                                                                 page 42 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 154.845                 Base or mobile                                      PP
                 154.8525                ......do                         27                 PP
                 154.860                 ......do                                            PP
                 154.8675                ......do                         27                 PP
                 154.875                 ......do                                            PP
                 154.8825                ......do                         27                 PP
                 154.890                 Mobile                                              PP
                 154.8975                ......do                         27                 PP
                 154.905                 Base or mobile                   16                 PP
                 154.9125                ......do                         16                 PP
                 154.920                 ......do                         16                 PP
                 154.9275                ......do                         16, 27             PP
                 154.935                 ......do                         16                 PP
                 154.9425                ......do                         16, 27             PP
                 154.950                 Mobile                                              PP
                 154.9575                ......do                         27                 PP
                 154.965                 Base or mobile                                      PX
                 154.9725                ......do                         27                 PX
                 154.980                 ......do                                            PX
                 154.9875                ......do                         27                 PX
                 154.995                 ......do                                            PX
                 155.0025                ......do                         27                 PX
                 155.010                 ......do                                            PP
                 155.0175                ......do                         27                 PP
                 155.025                 ......do                                            PX
                 155.0325                ......do                         27                 PX
                 155.040                 ......do                                            PX
                 155.0475                ......do                         27                 PX
                 155.055                 ......do                                            PX
                 155.0625                ......do                         27                 PX
                 155.070                 ......do                                            PP
                 155.0775                ......do                         27                 PP
                 155.085                 ......do                                            PX
                 155.0925                ......do                         27                 PX
                 155.100                 ......do                                            PX
                 155.1075                ......do                         27                 PX
                 155.115                 ......do                                            PX
                 155.1225                ......do                         27                 PX
                 155.130                 ......do                                            PP
                 155.1375                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 43 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 155.145                 ......do                                            PX
                 155.1525                ......do                         27                 PX
                 155.160                 ......do                         10                 PS
                 155.1675                ......do                         10, 27             PS
                 155.175                 ......do                         10                 PS
                 155.1825                ......do                         10, 27             PS
                 155.190                 ......do                                            PP
                 155.1975                ......do                         27                 PP
                 155.205                 ......do                         10                 PS
                 155.2125                ......do                         10, 27             PS
                 155.220                 ......do                         10                 PS
                 155.2275                ......do                         10, 27             PS
                 155.235                 ......do                         10                 PS
                 155.2425                ......do                         10, 27             PS
                 155.250                 ......do                                            PP
                 155.2575                ......do                         27                 PP
                 155.265                 ......do                         10                 PS
                 155.2725                ......do                         10, 27             PS
                 155.280                 ......do                         10                 PS
                 155.2875                ......do                         10, 27             PS
                 155.295                 ......do                         10                 PS
                 155.3025                ......do                         10, 27             PS
                 155.310                 ......do                                            PP
                 155.3175                ......do                         27                 PP
                 155.325                 ......do                         10, 39             PM
                 155.3325                ......do                         27, 10, 39         PM
                 155.340                 ......do                         39, 40             PM
                 155.3475                ......do                         27, 39, 40         PM
                 155.355                 ......do                         10, 39             PM
                 155.3625                ......do                         27, 10, 39         PM
                 155.370                 ......do                                            PP
                 155.3775                ......do                         27                 PP
                 155.385                 ......do                         10, 39             PM
                 155.3925                ......do                         27, 10, 39         PM
                 155.400                 ......do                         10, 39             PM
                 155.4075                ......do                         27, 10, 39         PM
                 155.415                 ......do                                            PP
                 155.4225                ......do                         27                 PP
                 155.430                 ......do                                            PP
                 155.4375                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 44 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 155.445                 ......do                         16                 PP
                 155.4525                ......do                         16, 27             PP
                 155.460                 ......do                         16                 PP
                 155.4675                ......do                         16, 27             PP
                 155.475                 ......do                         41                 PP
                 155.4825                ......do                         27, 41             PP
                 155.490                 ......do                                            PP
                 155.4975                ......do                         27                 PP
                 155.505                 ......do                         16                 PP
                 155.5125                ......do                         16, 27             PP
                 155.520                 ......do                                            PP
                 155.5275                ......do                         27                 PP
                 155.535                 ......do                                            PP
                 155.5425                ......do                         27                 PP
                 155.550                 ......do                                            PP
                 155.5575                ......do                         27                 PP
                 155.565                 ......do                                            PP
                 155.5725                ......do                         27                 PP
                 155.580                 ......do                                            PP
                 155.5875                ......do                         27                 PP
                 155.595                 ......do                                            PP
                 155.6025                ......do                         27                 PP
                 155.610                 ......do                                            PP
                 155.6175                ......do                         27                 PP
                 155.625                 ......do                                            PP
                 155.6325                ......do                         27                 PP
                 155.640                 ......do                                            PP
                 155.6475                ......do                         27                 PP
                 155.655                 ......do                                            PP
                 155.6625                ......do                         27                 PP
                 155.670                 ......do                                            PP
                 155.6775                ......do                         27                 PP
                 155.685                 ......do                                            PP
                 155.6925                ......do                         27                 PP
                 155.700                 ......do                                            PP
                 155.7075                ......do                         27                 PP
                 155.715                 ......do                                            PX
                 155.7225                ......do                         27                 PX
                 155.730                 ......do                                            PP
                 155.7375                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 45 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 155.745                 ......do                         81                 PX
                 155.7525                ......do                         27, 80, 83         PX
                 155.760                 ......do                         81                 PX
                 155.7675                ......do                         27                 PX
                 155.775                 ......do                                            PX
                 155.7825                ......do                         27                 PX
                 155.790                 ......do                                            PP
                 155.7975                ......do                         27                 PP
                 155.805                 ......do                                            PX
                 155.8125                ......do                         27                 PX
                 155.820                 ......do                                            PX
                 155.8275                ......do                         27                 PX
                 155.835                 ......do                                            PX
                 155.8425                ......do                         27                 PX
                 155.850                 Mobile                                              PP
                 155.8575                ......do                         27                 PP
                 155.865                 Base or mobile                                      PX
                 155.8725                ......do                         27                 PX
                 155.880                 ......do                                            PX
                 155.8875                ......do                         27                 PX
                 155.895                 ......do                                            PX
                 155.9025                ......do                         27                 PX
                 155.910                 Mobile                                              PP
                 155.9175                ......do                         27                 PP
                 155.925                 Base or mobile                                      PX
                 155.9325                ......do                         27                 PX
                 155.940                 ......do                                            PX
                 155.9475                ......do                         27                 PX
                 155.955                 ......do                                            PX
                 155.9625                ......do                         27                 PX
                 155.970                 Mobile                                              PP
                 155.9775                ......do                         27                 PP
                 155.985                 ......do                                            PX
                 155.9925                ......do                         27                 PX
                 156.000                 ......do                                            PX
                 156.0075                ......do                         27                 PX
                 156.015                 ......do                                            PX
                 156.0225                ......do                         27                 PX
                 156.030                 ......do                                            PP
                 156.0375                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 46 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 156.045                 ......do                         42                 PH
                 156.0525                ......do                         27, 42             PH
                 156.060                 ......do                         42                 PH
                 156.0675                ......do                         27, 42             PH
                 156.075                 ......do                                            PH
                 156.0825                ......do                         27                 PH
                 156.090                 ......do                                            PP
                 156.0975                ......do                         27                 PP
                 156.105                 Base or mobile                                      PH
                 156.1125                ......do                         27                 PH
                 156.120                 ......do                                            PH
                 156.1275                ......do                         27                 PH
                 156.135                 ......do                                            PH
                 156.1425                ......do                         27                 PH
                 156.150                 Mobile                                              PP
                 156.1575                ......do                         27                 PP
                 156.165                 Base or mobile                   42                 PH
                 156.1725                ......do                         27, 42             PH
                 156.180                 ......do                         42                 PH
                 156.1875                ......do                         27, 42             PH
                 156.195                 ......do                                            PH
                 156.2025                ......do                         27                 PH
                 156.210                 ......do                                            PP
                 156.2175                ......do                         27                 PP
                 156.225                 ......do                                            PH
                 156.2325                ......do                         27, 10             PH
                 156.240                 ......do                         79                 PH
                 157.450                 Base                             13, 30, 45         PS
                 158.7225                Base or Mobile                   44                 PP
                 158.730                 ......do                         81                 PP
                 158.7375                ......do                         27, 80             PP
                 158.745                 ......do                         81                 PX
                 158.7525                ......do                         27                 PX
                 158.760                 ......do                                            PX
                 158.7675                ......do                         27                 PX
                 158.775                 ......do                                            PX
                 158.7825                ......do                         27                 PX
                 158.790                 ......do                                            PP
                 158.7975                ......do                         27                 PP
                 158.805                 ......do                                            PX

47 CFR 90.20(c)(3) (enhanced display)                                                             page 47 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 158.8125                ......do                         27                 PX
                 158.820                 ......do                                            PX
                 158.8275                ......do                                            PX
                 158.835                 ......do                                            PX
                 158.8425                ......do                         27                 PX
                 158.850                 ......do                                            PP
                 158.8575                ......do                         27                 PP
                 158.865                 Mobile                                              PX
                 158.8725                ......do                         27                 PX
                 158.880                 ......do                                            PX
                 158.8875                ......do                                            PX
                 158.895                 ......do                                            PX
                 158.9025                ......do                         27                 PX
                 158.910                 ......do                                            PP
                 158.9175                ......do                         27                 PP
                 158.925                 ......do                                            PX
                 158.9325                ......do                         27                 PX
                 158.940                 ......do                                            PX
                 158.9475                ......do                                            PX
                 158.955                 ......do                                            PX
                 158.9625                ......do                         27                 PX
                 158.970                 ......do                                            PP
                 158.9775                ......do                         27                 PP
                 158.985                 ......do                                            PH
                 158.9925                ......do                         27                 PH
                 159.000                 ......do                                            PH
                 159.0075                ......do                         27                 PH
                 159.015                 ......do                                            PH
                 159.0225                ......do                         27                 PH
                 159.030                 ......do                                            PP
                 159.0375                ......do                         27                 PP
                 159.045                 ......do                                            PH
                 159.0525                ......do                         27                 PH
                 159.060                 ......do                                            PH
                 159.0675                ......do                         27                 PH
                 159.075                 ......do                                            PH
                 159.0825                ......do                         27                 PH
                 159.090                 Base or mobile                                      PP
                 159.0975                ......do                         27                 PP
                 159.105                 ......do                                            PH

47 CFR 90.20(c)(3) (enhanced display)                                                             page 48 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 159.1125                ......do                         27                 PH
                 159.120                 ......do                                            PH
                 159.1275                ......do                         27                 PH
                 159.135                 ......do                                            PH
                 159.1425                ......do                         27                 PH
                 159.150                 ......do                                            PP
                 159.1575                ......do                         27                 PP
                 159.165                 ......do                                            PH
                 159.1725                ......do                         27                 PH
                 159.180                 ......do                                            PH
                 159.1875                ......do                         27                 PH
                 159.195                 ......do                                            PH
                 159.2025                ......do                         27                 PH
                 159.210                 ......do                                            PP
                 159.2175                ......do                         27                 PP
                 159.225                 ......do                                            PO
                 159.2325                ......do                         27                 PO
                 159.240                 ......do                         46                 PO
                 159.2475                ......do                         27, 46             PO
                 159.255                 ......do                         46                 PO
                 159.2625                ......do                         27, 46             PO
                 159.270                 ......do                         46                 PO
                 159.2775                ......do                         27, 46             PO
                 159.285                 ......do                         46                 PO
                 159.2925                ......do                         27, 46             PO
                 159.300                 ......do                         46                 PO
                 159.3075                ......do                         27, 46             PO
                 159.315                 ......do                         46                 PO
                 159.3225                ......do                         27, 46             PO
                 159.330                 ......do                         46                 PO
                 159.3375                ......do                         27, 46             PO
                 159.345                 ......do                         46                 PO
                 159.3525                ......do                         27, 46             PO
                 159.360                 ......do                         46                 PO
                 159.3675                ......do                         27, 46             PO
                 159.375                 ......do                         46                 PO
                 159.3825                ......do                         27, 46             PO
                 159.390                 ......do                         46                 PO
                 159.3975                ......do                         27, 46             PO
                 159.405                 ......do                         46                 PO

47 CFR 90.20(c)(3) (enhanced display)                                                             page 49 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 159.4125                ......do                         27, 46             PO
                 159.420                 ......do                         46                 PO
                 159.4275                ......do                         27, 46             PO
                 159.435                 ......do                         46                 PO
                 159.4425                ......do                         27, 46             PO
                 159.450                 ......do                                            PO
                 159.4575                ......do                         27                 PO
                 159.465                 ......do                         81                 PO
                 159.4725                ......do                         80                 PO
                 163.250                 Base                             13, 30             PS
                 166.250                 Base or mobile                   47                 PF
                 169 to 172              Mobile or operational fixed      48
                 170.150                 Base or mobile                   47                 PF
                 170.425                 ....do                           9, 49              PO.
                 170.475                 ....do                           9, 49              PO.
                 170.575                 ....do                           9, 49              PO.
                 171.425                 ....do                           9, 49              PO.
                 171.475                 ....do                           9, 49              PO.
                 171.575                 ....do                           9, 49              PO.
                 172.225                 ....do                           9, 49              PO.
                 172.275                 ....do                           9, 49              PO.
                 172.375                 ....do                           9, 49              PO.
                 173.075                 ......do                         53                 PP
                 173.20375               Fixed or mobile                  33, 34, 35, 36     PX
                 173.210                 ......do                         34, 35, 36, 54     PX
                 173.2375                ......do                         90, 91, 92, 93     PX
                 173.2625                ......do                         90, 91, 92, 93     PX
                 173.2875                ......do                         90, 91, 92, 93     PX
                 173.3125                ......do                         90, 91, 92, 93     PX
                 173.3375                ......do                         90, 91, 92, 93     PX
                 173.3625                ......do                         90, 91, 92, 93     PX
                 173.390                 ......do                         34, 35, 36, 54     PX
                 173.39625               ......do                         33, 34, 35, 36     PX
                 220 to 222              Base or mobile                   55
                 220.8025                Base                             55
                 220.8075                ......do                         55
                 220.8125                ......do                         55
                 220.8175                ......do                         55
                 220.8225                ......do                         55
                 220.8275                ......do                         55

47 CFR 90.20(c)(3) (enhanced display)                                                               page 50 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)               Limitations      Coordinator
                 220.8325                ......do                                 55
                 220.8375                ......do                                 55
                 220.8425                ......do                                 55
                 220.8475                ......do                                 55
                 220.9025                ......do                                 55                   PM
                 220.9075                ......do                                 55                   PM
                 220.9125                ......do                                 55                   PM
                 220.9175                ......do                                 55                   PM
                 220.9225                ......do                                 55                   PM
                 221.8025                Mobile                                   55
                 221.8075                ......do                                 55
                 221.8125                ......do                                 55
                 221.8175                ......do                                 55
                 221.8225                ......do                                 55
                 221.8275                ......do                                 55
                 221.8325                ......do                                 55
                 221.8375                ......do                                 55
                 221.8425                ......do                                 55
                 221.8475                ......do                                 55
                 221.9025                ......do                                 55                   PM
                 221.9075                ......do                                 55                   PM
                 221.9125                ......do                                 55                   PM
                 221.9175                ......do                                 55                   PM
                 221.9225                ......do                                 55                   PM
                 406 to 416              Operational fixed                        48
                 450 to 470              Fixed, base, or mobile                   26, 56
                 453.0125                Mobile                                   57, 78               PX
                 453.03125               Base or mobile                           44, 59, 62, 84       PM
                 453.0375                ......do                                 27, 59, 62, 84       PX
                 453.04375               ......do                                 44, 59, 62, 84       PM
                 453.050                 ......do                                                      PX
                 453.05625               ......do                                 44, 84               PX
                 453.0625                ......do                                 27, 84               PX
                 453.06875               ......do                                 44, 84               PX
                 453.075                 Central control, fixed base, or mobile   58, 59, 60, 61, 62   PM
                 453.08125               Base or mobile                           44, 59, 62, 84       PM
                 453.0875                ......do                                 27, 59, 62, 84       PX
                 453.09375               ......do                                 44, 59, 62, 84       PM
                 453.100                 ......do                                                      PX
                 453.10625               ......do                                 44, 84               PX

47 CFR 90.20(c)(3) (enhanced display)                                                                       page 51 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)               Limitations      Coordinator
                 453.1125                ......do                                 27, 84               PX
                 453.11875               ......do                                 44, 84               PX
                 453.125                 Central control, fixed base, or mobile   58, 59, 60, 61, 62   PM
                 453.13125               Base or mobile                           44, 59, 62, 84       PM
                 453.1375                ......do                                 27, 59, 62, 84       PX
                 453.14375               ......do                                 44, 59, 62, 84       PM
                 453.150                 ......do                                                      PX
                 453.15625               ......do                                 44                   PX
                 453.1625                ......do                                 27                   PX
                 453.16875               ......do                                 44                   PX
                 453.175                 Central control, fixed base, or mobile   58, 59, 60, 61, 62   PM
                 453.18125               Base or mobile                           44, 59, 62           PM
                 453.1875                ......do                                 27, 59, 62           PX
                 453.19375               ......do                                 44, 59, 62           PM
                 453.200                 ......do                                 81                   PX
                 453.20625               ......do                                 44, 82               PX
                 453.2125                ......do                                 27, 80, 83           PX
                 453.21875               ......do                                 44, 82               PX
                 453.225                 ......do                                 81                   PX
                 453.23125               ......do                                 44                   PX
                 453.2375                ......do                                 27                   PX
                 453.24375               ......do                                 44                   PX
                 453.250                 ......do                                                      PX
                 453.25625               ......do                                 44                   PX
                 453.2625                ......do                                 27                   PX
                 453.26875               ......do                                 44                   PX
                 453.275                 ......do                                                      PX
                 453.28125               ......do                                 44                   PX
                 453.2875                ......do                                 27                   PX
                 453.29375               ......do                                 44                   PX
                 453.300                 ......do                                                      PX
                 453.30625               ......do                                 44                   PX
                 453.3125                ......do                                 27                   PX
                 453.31875               ......do                                 44                   PX
                 453.325                 ......do                                                      PX
                 453.33125               ......do                                 44                   PX
                 453.3375                ......do                                 27                   PX
                 453.34375               ......do                                 44                   PX
                 453.350                 ......do                                                      PX
                 453.35625               ......do                                 44                   PX

47 CFR 90.20(c)(3) (enhanced display)                                                                       page 52 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 453.3625                ......do                         27                 PX
                 453.36875               ......do                         44                 PX
                 453.375                 ......do                                            PX
                 453.38125               ......do                         44                 PX
                 453.3875                ......do                         27                 PX
                 453.39375               ......do                         44                 PX
                 453.400                 ......do                                            PX
                 453.40625               ......do                         44                 PX
                 453.4125                ......do                         27                 PX
                 453.41875               ......do                         44                 PX
                 453.425                 ......do                                            PX
                 453.43125               ......do                         44                 PX
                 453.4375                ......do                         27                 PX
                 453.44375               ......do                         44                 PX
                 453.450                 ......do                         81                 PX
                 453.45625               ......do                         44, 82             PX
                 453.4625                ......do                         27, 80             PX
                 453.46875               ......do                         44, 82             PX
                 453.475                 ......do                         81                 PX
                 453.48125               ......do                         44                 PX
                 453.4875                ......do                         27                 PX
                 453.49375               ......do                         44                 PX
                 453.500                 ......do                                            PX
                 453.50625               ......do                         44                 PX
                 453.5125                ......do                         27                 PX
                 453.51875               ......do                         44                 PX
                 453.525                 ......do                                            PX
                 453.53125               ......do                         44                 PX
                 453.5375                ......do                         27                 PX
                 453.54375               ......do                         44                 PX
                 453.550                 ......do                                            PX
                 453.55625               ......do                         44                 PX
                 453.5625                ......do                         27                 PX
                 453.56875               ......do                         44                 PX
                 453.575                 ......do                                            PX
                 453.58125               ......do                         44                 PX
                 453.5875                ......do                         27                 PX
                 453.59375               ......do                         44                 PX
                 453.600                 ......do                                            PX
                 453.60625               ......do                         44                 PX

47 CFR 90.20(c)(3) (enhanced display)                                                             page 53 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 453.6125                ......do                         27                 PX
                 453.61875               ......do                         44                 PX
                 453.625                 ......do                                            PX
                 453.63125               ......do                         44                 PX
                 453.6375                ......do                         27                 PX
                 453.64375               ......do                         44                 PX
                 453.650                 ......do                                            PX
                 453.65625               ......do                         44                 PX
                 453.6625                ......do                         27                 PX
                 453.66875               ......do                         44                 PX
                 453.675                 ......do                                            PX
                 453.68125               ......do                         44                 PX
                 453.6875                ......do                         27                 PX
                 453.69375               ......do                         44                 PX
                 453.700                 ......do                         81                 PX
                 453.70625               ......do                         44, 82             PX
                 453.7125                ......do                         27, 80             PX
                 453.71875               ......do                         44, 82             PX
                 453.725                 ......do                         81                 PX
                 453.73125               ......do                         44                 PX
                 453.7375                ......do                         27                 PX
                 453.74375               ......do                         44                 PX
                 453.750                 ......do                                            PX
                 453.75625               ......do                         44                 PX
                 453.7625                ......do                         27                 PX
                 453.76875               ......do                         44                 PX
                 453.775                 ......do                                            PX
                 453.78125               ......do                         44                 PX
                 453.7875                ......do                         27                 PX
                 453.79375               ......do                         44                 PX
                 453.800                 ......do                                            PX
                 453.80625               ......do                         44                 PX
                 453.8125                ......do                         27                 PX
                 453.81875               ......do                         44                 PX
                 453.825                 ......do                                            PX
                 453.83125               ......do                         44                 PX
                 453.8375                ......do                         27                 PX
                 453.84375               ......do                         44                 PX
                 453.850                 ......do                         81                 PX
                 453.85625               ......do                         44, 82             PX

47 CFR 90.20(c)(3) (enhanced display)                                                             page 54 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)               Limitations      Coordinator
                 453.8625                ......do                                 27, 80               PX
                 453.86875               ......do                                 44, 82               PX
                 453.875                 ......do                                 81                   PX
                 453.88125               ......do                                 44, 84               PX
                 453.8875                ......do                                 27, 84               PX
                 453.89375               ......do                                 44, 84               PX
                 453.900                 ......do                                                      PX
                 453.90625               ......do                                 44, 84               PX
                 453.9125                ......do                                 27, 84               PX
                 453.91875               ......do                                 44, 84               PX
                 453.925                 ......do                                                      PX
                 453.93125               ......do                                 44, 84               PX
                 453.9375                ......do                                 27, 84               PX
                 453.94375               ......do                                 44, 84               PX
                 453.950                 ......do                                                      PX
                 453.95625               ......do                                 44, 84               PX
                 453.9625                ......do                                 27, 84               PX
                 453.96875               ......do                                 44, 84               PX
                 453.975                 ......do                                                      PX
                 453.98125               ......do                                 44, 84               PX
                 453.9875                ......do                                 27, 84               PX
                 453.99375               ......do                                 44, 84               PX
                 458.0125                Mobile                                   57                   PS
                 458.025                 Central control, fixed base, or mobile   58, 59, 61, 62, 63   PM
                 458.03125               Mobile                                   44, 59, 61, 62, 84   PM
                 458.0375                ......do                                 27, 59, 61, 62, 84   PX
                 458.04375               ......do                                 44, 59, 61, 62, 84   PM
                 458.050                 ......do                                                      PX
                 458.05625               ......do                                 44, 84               PX
                 458.0625                ......do                                 27, 84               PX
                 458.06875               ......do                                 44, 84               PX
                 458.075                 Central control, fixed base, or mobile   58, 59, 61, 62, 63   PM
                 458.08125               Mobile                                   44, 59, 61, 62, 84   PM
                 458.0875                ......do                                 27, 59, 61, 62, 84   PX
                 458.09375               ......do                                 44, 59, 61, 62, 84   PM
                 458.100                 ......do                                                      PX
                 458.10625               ......do                                 44, 84               PX
                 458.1125                ......do                                 27, 84               PX
                 458.11875               ......do                                 44, 84               PX
                 458.125                 Central control, fixed base, or mobile   58, 59, 61, 62, 63   PM

47 CFR 90.20(c)(3) (enhanced display)                                                                       page 55 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)               Limitations      Coordinator
                 458.13125               Mobile                                   44, 59, 61, 62, 84   PM
                 458.1375                ......do                                 27, 59, 61, 62, 84   PX
                 458.14375               ......do                                 44, 59, 61, 62, 84   PM
                 458.150                 ......do                                                      PX
                 458.15625               ......do                                 44                   PX
                 458.1625                ......do                                 27                   PX
                 458.16875               ......do                                 44                   PX
                 458.175                 Central control, fixed base, or mobile   58, 59, 61, 62, 63   PM
                 458.18125               Mobile                                   44, 59, 61, 62       PM
                 458.1875                ......do                                 27, 59, 61, 62       PX
                 458.19375               ......do                                 44, 59, 61, 62       PM
                 458.200                 ......do                                 81                   PX
                 458.20625               ......do                                 44, 82               PX
                 458.2125                ......do                                 27, 80, 83           PX
                 458.21875               ......do                                 44, 82               PX
                 458.225                 ......do                                 81                   PX
                 458.23125               ......do                                 44                   PX
                 458.2375                ......do                                 27                   PX
                 458.24375               ......do                                 44                   PX
                 458.250                 ......do                                                      PX
                 458.25625               ......do                                 44                   PX
                 458.2625                ......do                                 27                   PX
                 458.26875               ......do                                 44                   PX
                 458.275                 ......do                                                      PX
                 458.28125               ......do                                 44                   PX
                 458.2875                ......do                                 27                   PX
                 458.29375               ......do                                 44                   PX
                 458.300                 ......do                                                      PX
                 458.30625               ......do                                 44                   PX
                 458.3125                ......do                                 27                   PX
                 458.31875               ......do                                 44                   PX
                 458.325                 ......do                                                      PX
                 458.33125               ......do                                 44                   PX
                 458.3375                ......do                                 27                   PX
                 458.34375               ......do                                 44                   PX
                 458.350                 ......do                                                      PX
                 458.35625               ......do                                 44                   PX
                 458.3625                ......do                                 27                   PX
                 458.36875               ......do                                 44                   PX
                 458.375                 ......do                                                      PX

47 CFR 90.20(c)(3) (enhanced display)                                                                       page 56 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 458.38125               ......do                         44                 PX
                 458.3875                ......do                         27                 PX
                 458.39375               ......do                         44                 PX
                 458.400                 ......do                                            PX
                 458.40625               ......do                         44                 PX
                 458.4125                ......do                         27                 PX
                 458.41875               ......do                         44                 PX
                 458.425                 ......do                                            PX
                 458.43125               ......do                         44                 PX
                 458.4375                ......do                         27                 PX
                 458.44375               ......do                         44                 PX
                 458.450                 ......do                         81                 PX
                 458.45625               ......do                         44, 82             PX
                 458.4625                ......do                         27, 80             PX
                 458.46875               ......do                         44, 82             PX
                 458.475                 ......do                         81                 PX
                 458.48125               ......do                         44                 PX
                 458.4875                ......do                         27                 PX
                 458.49375               ......do                         44                 PX
                 458.500                 ......do                                            PX
                 458.50625               ......do                         44                 PX
                 458.5125                ......do                         27                 PX
                 458.51875               ......do                         44                 PX
                 458.525                 ......do                                            PX
                 458.53125               ......do                         44                 PX
                 458.5375                ......do                         27                 PX
                 458.54375               ......do                         44                 PX
                 458.550                 ......do                                            PX
                 458.55625               ......do                         44                 PX
                 458.5625                ......do                         27                 PX
                 458.56875               ......do                         44                 PX
                 458.575                 ......do                                            PX
                 458.58125               ......do                         44                 PX
                 458.5875                ......do                         27                 PX
                 458.59375               ......do                         44                 PX
                 458.600                 ......do                                            PX
                 458.60625               ......do                         44                 PX
                 458.6125                ......do                         27                 PX
                 458.61875               ......do                         44                 PX
                 458.625                 ......do                                            PX

47 CFR 90.20(c)(3) (enhanced display)                                                             page 57 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 458.63125               ......do                         44                 PX
                 458.6375                ......do                         27                 PX
                 458.64375               ......do                         44                 PX
                 458.650                 ......do                                            PX
                 458.65625               ......do                         44                 PX
                 458.6625                ......do                         27                 PX
                 458.66875               ......do                         44                 PX
                 458.675                 ......do                                            PX
                 458.68125               ......do                         44                 PX
                 458.6875                ......do                         27                 PX
                 458.69375               ......do                         44                 PX
                 458.700                 ......do                                            PX
                 458.70625               ......do                         44                 PX
                 458.7125                ......do                         27                 PX
                 458.71875               ......do                         44                 PX
                 458.725                 ......do                                            PX
                 458.73125               ......do                         44                 PX
                 458.7375                ......do                         27                 PX
                 458.74375               ......do                         44                 PX
                 458.750                 ......do                                            PX
                 458.75625               ......do                         44                 PX
                 458.7625                ......do                         27                 PX
                 458.76875               ......do                         44                 PX
                 458.775                 ......do                                            PX
                 458.78125               ......do                         44                 PX
                 458.7875                ......do                         27                 PX
                 458.79375               ......do                         44                 PX
                 458.800                 ......do                                            PX
                 458.80625               ......do                         44                 PX
                 458.8125                ......do                         27                 PX
                 458.81875               ......do                         44                 PX
                 458.825                 ......do                                            PX
                 458.83125               ......do                         44                 PX
                 458.8375                ......do                         27                 PX
                 458.84375               ......do                         44                 PX
                 458.850                 ......do                         81                 PX
                 458.85625               ......do                         44, 82             PX
                 458.8625                ......do                         27, 80             PX
                 458.86875               ......do                         44, 82             PX
                 458.875                 ......do                         81                 PX

47 CFR 90.20(c)(3) (enhanced display)                                                             page 58 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 458.88125               ......do                         44, 84             PX
                 458.8875                ......do                         27, 84             PX
                 458.89375               ......do                         44, 84             PX
                 458.900                 ......do                                            PX
                 458.90625               ......do                         44, 84             PX
                 458.9125                ......do                         27, 84             PX
                 458.91875               ......do                         44, 84             PX
                 458.925                 ......do                                            PX
                 458.93125               ......do                         44, 84             PX
                 458.9375                ......do                         27, 84             PX
                 458.94375               ......do                         44, 84             PX
                 458.950                 ......do                                            PX
                 458.95625               ......do                         44, 84             PX
                 458.9625                ......do                         27, 84             PX
                 458.96875               ......do                         44, 84             PX
                 458.975                 ......do                                            PX
                 458.98125               ......do                         44, 84             PX
                 458.9875                ......do                         27, 84             PX
                 458.99375               ......do                         44, 84             PX
                 460.0125                ......do                         27, 64             PP
                 460.01875               Base or mobile                   44                 PP
                 460.025                 ......do                                            PP
                 460.03125               ......do                         44                 PP
                 460.0375                ......do                         27                 PP
                 460.04375               ......do                         44                 PP
                 460.050                 ......do                                            PP
                 460.05625               ......do                         44                 PP
                 460.0625                ......do                         27                 PP
                 460.06875               ......do                         44                 PP
                 460.075                 ......do                                            PP
                 460.08125               ......do                         44                 PP
                 460.0875                ......do                         27                 PP
                 460.09375               ......do                         44                 PP
                 460.100                 ......do                                            PP
                 460.10625               ......do                         44                 PP
                 460.1125                ......do                         27                 PP
                 460.11875               ......do                         44                 PP
                 460.125                 ......do                                            PP
                 460.13125               ......do                         44                 PP
                 460.1375                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 59 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 460.14375               ......do                         44                 PP
                 460.150                 ......do                                            PP
                 460.15625               ......do                         44                 PP
                 460.1625                ......do                         27                 PP
                 460.16875               ......do                         44                 PP
                 460.175                 ......do                                            PP
                 460.18125               ......do                         44                 PP
                 460.1875                ......do                         27                 PP
                 460.19375               ......do                         44                 PP
                 460.200                 ......do                                            PP
                 460.20625               ......do                         44                 PP
                 460.2125                ......do                         27                 PP
                 460.21875               ......do                         44                 PP
                 460.225                 ......do                                            PP
                 460.23125               ......do                         44                 PP
                 460.2375                ......do                         27                 PP
                 460.24375               ......do                         44                 PP
                 460.250                 ......do                                            PP
                 460.25625               ......do                         44                 PP
                 460.2625                ......do                         27                 PP
                 460.26875               ......do                         44                 PP
                 460.275                 ......do                                            PP
                 460.28125               ......do                         44                 PP
                 460.2875                ......do                         27                 PP
                 460.29375               ......do                         44                 PP
                 460.300                 ......do                                            PP
                 460.30625               ......do                         44                 PP
                 460.3125                ......do                         27                 PP
                 460.31875               ......do                         44                 PP
                 460.325                 ......do                                            PP
                 460.33125               ......do                         44                 PP
                 460.3375                ......do                         27                 PP
                 460.34375               ......do                         44                 PP
                 460.350                 ......do                                            PP
                 460.35625               ......do                         44                 PP
                 460.3625                ......do                         27                 PP
                 460.36875               ......do                         44                 PP
                 460.375                 ......do                                            PP
                 460.38125               ......do                         44                 PP
                 460.3875                ......do                         27                 PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 60 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 460.39375               ......do                         44                 PP
                 460.400                 ......do                                            PP
                 460.40625               ......do                         44                 PP
                 460.4125                ......do                         27                 PP
                 460.41875               ......do                         44                 PP
                 460.425                 ......do                                            PP
                 460.43125               ......do                         44                 PP
                 460.4375                ......do                         27                 PP
                 460.44375               ......do                         44                 PP
                 460.450                 ......do                                            PP
                 460.45625               ......do                         44                 PP
                 460.4625                ......do                         27                 PP
                 460.46875               ......do                         44                 PP
                 460.475                 ......do                                            PP
                 460.48125               ......do                         44, 84             PP
                 460.4875                ......do                         27, 84             PP
                 460.49375               ......do                         44, 84             PP
                 460.500                 ......do                                            PP
                 460.50625               ......do                         44, 84             PP
                 460.5125                ......do                         27, 84             PP
                 460.51875               ......do                         44, 84             PP
                 460.525                 ......do                                            PP, PF, PM
                 460.53125               ......do                         44, 84             PP, PF, PM
                 460.5375                ......do                         27, 84             PP, PF, PM
                 460.54375               ......do                         44, 84             PP, PF, PM
                 460.550                 ......do                                            PP, PF, PM
                 460.55625               ......do                         44, 84             PP, PF, PM
                 460.5625                ......do                         27, 84             PP, PF, PM
                 460.56875               ......do                         44, 84             PP, PF, PM
                 460.575                 ......do                                            PF
                 460.58125               ......do                         44                 PF
                 460.5875                ......do                         27                 PF
                 460.59375               ......do                         44                 PF
                 460.600                 ......do                                            PF
                 460.60625               ......do                         44                 PF
                 460.6125                ......do                         27                 PF
                 460.61875               ......do                         44                 PF
                 460.625                 ......do                                            PF
                 460.63125               ......do                         44                 PF
                 460.6375                ......do                         27                 PF

47 CFR 90.20(c)(3) (enhanced display)                                                                page 61 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 460.64375               ......do                         44                 PF
                 462.9375                ......do                         57                 PF
                 462.950                 ......do                         10, 65             PM
                 462.95625               ......do                         10, 44, 65         PM
                 462.9625                ......do                         27, 10, 65         PM
                 462.96875               ......do                         10, 44, 65         PM
                 462.975                 ......do                         10, 65             PM
                 462.98125               ......do                         10, 44, 65         PM
                 462.9875                ......do                         27, 10, 65         PM
                 462.99375               ......do                         10, 44, 65         PM
                 463.000                 ......do                         59, 66, 67         PM
                 463.00625               ......do                         44, 59, 66, 67     PM
                 463.0125                ......do                         27, 59, 66, 67     PM
                 463.01875               ......do                         44, 59, 66, 67     PM
                 463.025                 ......do                         59, 66, 67         PM
                 463.03125               ......do                         44, 59, 66, 67     PM
                 463.0375                ......do                         27, 59, 66, 67     PM
                 463.04375               ......do                         44, 59, 66, 67     PM
                 463.050                 ......do                         59, 66, 67         PM
                 463.05625               ......do                         44, 59, 66, 67     PM
                 463.0625                ......do                         27, 59, 66, 67     PM
                 463.06875               ......do                         44, 59, 66, 67     PM
                 463.075                 ......do                         59, 66, 76         PM
                 463.08125               ......do                         44, 59, 66, 76     PM
                 463.0875                ......do                         27, 59, 66, 76     PM
                 463.09375               ......do                         44, 59, 66, 76     PM
                 463.100                 ......do                         59, 66, 76         PM
                 463.10625               ......do                         44, 59, 66, 76     PM
                 463.1125                ......do                         27, 59, 66, 76     PM
                 463.11875               ......do                         44, 59, 66, 76     PM
                 463.125                 ......do                         59, 66, 76         PM
                 463.13125               ......do                         44, 59, 66, 76     PM
                 463.1375                ......do                         27, 59, 66, 76     PM
                 463.14375               ......do                         44, 59, 66, 76     PM
                 463.150                 ......do                         59, 66, 76         PM
                 463.15625               ......do                         44, 59, 66, 76     PM
                 463.1625                ......do                         27, 59, 66, 76     PM
                 463.16875               ......do                         44, 59, 66, 76     PM
                 463.175                 ......do                         59, 66, 76         PM
                 463.18125               ......do                         44, 59, 66, 76     PM

47 CFR 90.20(c)(3) (enhanced display)                                                               page 62 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 463.1875                ......do                         27, 59, 66, 76     PM
                 463.19375               ......do                         44, 59, 66, 76     PM
                 465.0125                Mobile                           57                 PP
                 465.025                 ......do                                            PP
                 465.03125               ......do                         44                 PP
                 465.0375                ......do                         27                 PP
                 465.04375               ......do                         44                 PP
                 465.050                 ......do                                            PP
                 465.05625               ......do                         44                 PP
                 465.0625                ......do                         27                 PP
                 465.06875               ......do                         44                 PP
                 465.075                 ......do                                            PP
                 465.08125               ......do                         44                 PP
                 465.0875                ......do                         27                 PP
                 465.09375               ......do                         44                 PP
                 465.100                 ......do                                            PP
                 465.10625               ......do                         44                 PP
                 465.1125                ......do                         27                 PP
                 465.11875               ......do                         44                 PP
                 465.125                 ......do                                            PP
                 465.13125               ......do                         44                 PP
                 465.1375                ......do                         27                 PP
                 465.14375               ......do                         44                 PP
                 465.150                 ......do                                            PP
                 465.15625               ......do                         44                 PP
                 465.1625                ......do                         27                 PP
                 465.16875               ......do                         44                 PP
                 465.175                 ......do                                            PP
                 465.18125               ......do                         44                 PP
                 465.1875                ......do                         27                 PP
                 465.19375               ......do                         44                 PP
                 465.200                 ......do                                            PP
                 465.20625               ......do                         44                 PP
                 465.2125                ......do                         27                 PP
                 465.21875               ......do                         44                 PP
                 465.225                 ......do                                            PP
                 465.23125               ......do                         44                 PP
                 465.2375                ......do                         27                 PP
                 465.24375               ......do                         44                 PP
                 465.250                 ......do                                            PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 63 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations    Coordinator
                 465.25625               ......do                         44                 PP
                 465.2625                ......do                         27                 PP
                 465.26875               ......do                         44                 PP
                 465.275                 ......do                                            PP
                 465.28125               ......do                         44                 PP
                 465.2875                ......do                         27                 PP
                 465.29375               ......do                         44                 PP
                 465.300                 ......do                                            PP
                 465.30625               ......do                         44                 PP
                 465.3125                ......do                         27                 PP
                 465.31875               ......do                         44                 PP
                 465.325                 ......do                                            PP
                 465.33125               ......do                         44                 PP
                 465.3375                ......do                         27                 PP
                 465.34375               ......do                         44                 PP
                 465.350                 ......do                                            PP
                 465.35625               ......do                         44                 PP
                 465.3625                ......do                         27                 PP
                 465.36875               ......do                         44                 PP
                 465.375                 ......do                                            PP
                 465.38125               ......do                         44                 PP
                 465.3875                ......do                         27                 PP
                 465.39375               ......do                         44                 PP
                 465.400                 ......do                                            PP
                 465.40625               ......do                         44                 PP
                 465.4125                ......do                         27                 PP
                 465.41875               ......do                         44                 PP
                 465.425                 ......do                                            PP
                 465.43125               ......do                         44                 PP
                 465.4375                ......do                         27                 PP
                 465.44375               ......do                         44                 PP
                 465.450                 ......do                                            PP
                 465.45625               ......do                         44                 PP
                 465.4625                ......do                         27                 PP
                 465.46875               ......do                         44                 PP
                 465.475                 ......do                                            PP
                 465.48125               ......do                         44, 84             PP
                 465.4875                ......do                         27, 84             PP
                 465.49375               ......do                         44, 84             PP
                 465.500                 ......do                                            PP

47 CFR 90.20(c)(3) (enhanced display)                                                             page 64 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.20(c)(3)
Private Land Mobile Radio Services

                   Frequency or band                Class of station(s)        Limitations        Coordinator
                 465.50625               ......do                         44, 84             PP
                 465.5125                ......do                         27, 84             PP
                 465.51875               ......do                         44, 84             PP
                 465.525                 ......do                                            PP, PF, PM
                 465.53125               ......do                         44, 84             PP, PF, PM
                 465.5375                ......do                         27, 84             PP, PF, PM
                 465.54375               ......do                         44, 84             PP, PF, PM
                 465.550                 Base or mobile                                      PP, PF, PM
                 465.55625               ......do                         44, 84             PP, PF, PM
                 465.5625                ......do                         27, 84             PP, PF, PM
                 465.56875               ......do                         44, 84             PP, PF, PM
                 465.575                 Mobile                                              PF
                 465.58125               ......do                         44                 PF
                 465.5875                ......do                         27                 PF
                 465.59375               ......do                         44                 PF
                 465.600                 ......do                                            PF
                 465.60625               ......do                         44                 PF
                 465.6125                ......do                         27                 PF
                 465.61875               ......do                         44                 PF
                 465.625                 ......do                                            PF
                 465.63125               ......do                         44                 PF
                 465.6375                ......do                         27                 PF
                 465.64375               ......do                         44                 PF
                 467.9375                ......do                         57                 PS
                 467.950                 ......do                         10, 65             PM
                 467.95625               ......do                         10, 44, 65         PM
                 467.9625                ......do                         10, 27, 65         PM
                 467.96875               ......do                         10, 44, 65         PM
                 467.975                 ......do                         10, 65             PM
                 467.98125               ......do                         10, 44, 65         PM
                 467.9875                ......do                         10, 27, 65         PM
                 467.99375               ......do                         10, 44, 65         PM
                 468.000                 ......do                         59, 66, 67         PM
                 468.00625               ......do                         44, 59, 66, 67     PM
                 468.0125                ......do                         27, 59, 66, 67     PM
                 468.01875               ......do                         44, 59, 66, 67     PM
                 468.025                 ......do                         59, 66, 67         PM
                 468.03125               ......do                         44, 59, 66, 67     PM
                 468.0375                ......do                         27, 59, 66, 67     PM
                 468.04375               ......do                         44, 59, 66, 67     PM

47 CFR 90.20(c)(3) (enhanced display)                                                               page 65 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(d)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)             Limitations     Coordinator
                 468.050                 ......do                              59, 66, 67          PM
                 468.05625               ......do                              44, 59, 66, 67      PM
                 468.0625                ......do                              27, 59, 66, 67      PM
                 468.06875               ......do                              44, 59, 66, 67      PM
                 468.075                 ......do                              59, 66, 76          PM
                 468.08125               ......do                              44, 59, 66, 76      PM
                 468.0875                ......do                              27, 59, 66, 76      PM
                 468.09375               ......do                              44, 59, 66, 76      PM
                 468.100                 ......do                              59, 66, 76          PM
                 468.10625               ......do                              44, 59, 66, 76      PM
                 468.1125                ......do                              27, 59, 66, 76      PM
                 468.11875               ......do                              44, 59, 66, 76      PM
                 468.125                 ......do                              59, 66, 76          PM
                 468.13125               ......do                              44, 59, 66, 76      PM
                 468.1375                ......do                              27, 59, 66, 76      PM
                 468.14375               ......do                              44, 59, 66, 76      PM
                 468.150                 ......do                              59, 66, 76          PM
                 468.15625               ......do                              44, 59, 66, 76      PM
                 468.1625                ......do                              27, 59, 66, 76      PM
                 468.16875               ......do                              44, 59, 66, 76      PM
                 468.175                 ......do                              59, 66, 76          PM
                 468.18125               ......do                              44, 59, 66, 76      PM
                 468.1875                ......do                              27, 59, 66, 76      PM
                 468.19375               ......do                              44, 59, 66, 76      PM
                 470 to 512              Base or mobile                        68
                 758 to 775              Base, mobile                          77                  PX
                 788 to 805              Mobile                                77                  PX
                 806 to 817              ......do                              69
                 851 to 862              Base or mobile                        69
                 928 and above           Operational fixed                     70.
                 929 to 930              Base only                             71.
                 1,427 to 1,432          Base, mobile or operational fixed     72
                 2,450 to 2,500          Base or mobile                        73.
                 4940 to 4990            Fixed, base or mobile                 85
                 5895–5925               Base or mobile                        86                  Not applicable.
                 10,550 to 10,680        ......do                              74.

     (d) Explanation of assignment limitations appearing in the frequency table of paragraph (c)(3) of this section:

           (1) This frequency is available for use by Travelers' Information Stations in accordance with § 90.242.

           (2) The frequency is available for assignment only in accordance with a geographical assignment plan.

47 CFR 90.20(d)(2) (enhanced display)                                                                    page 66 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(d)(3)
Private Land Mobile Radio Services

           (3) Base stations operating on this frequency and rendering service to state police mobile units may be
               authorized to use a maximum output power in excess of the maximum indicated in § 90.205 but not
               in excess of 7500 watts: Provided, That such operation is secondary to other stations.

           (4) The use of this frequency is on a secondary basis to any Canadian station.

           (5) In addition to base and mobile stations, this frequency may be assigned to fixed stations on a
               secondary basis to base or mobile stations. Upon a showing of need, the use of a second frequency
               in the band 2505–3500 kHz may be made available to governmental entities through appropriate
               arrangements with Federal Government agencies for restricted area use on a shared basis with
               maximum power output, emission, and hours of operation determined on the basis of the technical
               conditions involved in using the selected frequency in the particular area.

           (6) Only the central governments of the fifty individual States, the District of Columbia, and the insular
               areas of the Commonwealth of the Northern Mariana Islands, the Commonwealth of Puerto Rico,
               and the unincorporated territories of American Samoa, Guam and the United States Virgin Islands
               are eligible to be licensed to use this spectrum, and then only for disaster communications
               purposes. Licensees may not use this spectrum to provide operational communications circuits. See
               also, § 90.264.

           (7) This frequency is shared with the Industrial/Business Pool.

           (8) This frequency is available for assignment only in accordance with a geographical assignment plan.
               This frequency may be used for conservation activities on a secondary basis to any station using the
               frequency for forest fire prevention, detection, and suppression.

           (9) This frequency is reserved primarily for assignment to state licensees. Assignments to other
               licensees will be made only where the frequency is required for coordinated operation with the State
               system to which the frequency is assigned. Any request for such assignment must be supported by
               a statement from the State system concerned, indicating that the assignment is necessary for
               coordination of activities.

          (10) A licensee regularly conducting two-way communication operations on this frequency may, on a
               secondary basis, also transmit one-way alert-paging signals to ambulance and rescue squad
               personnel.

          (11) The maximum output power of any transmitter authorized to operate on this frequency shall not
               exceed 10 watts.

          (12) This frequency is available in this service only to persons eligible under the provisions of paragraph
               (a)(2)(v) of this section for operation of transmitters having a maximum power output of three watts
               using A1A, A1D, A2B, A2D, F1B, F1D, F2B, F2D, G1B, G1D, G2B, or G2D emission. This frequency is
               also available in the Industrial/Business Pool on a co-equal basis with the Public Safety licensees.

          (13) This frequency will be assigned only for one-way paging communications to mobile receivers.
               Transmissions for the purpose of activating or controlling remote objects on this frequency are not
               authorized.

          (14) The maximum output power of any transmitter authorized to operate on this frequency, after June 1,
               1956, shall not exceed two watts. Licensees holding a valid authorization as of June 1, 1956, for
               base or mobile station operation on this frequency, with a power in excess of two watts, may
               continue to be authorized for such operation without regard to this power limitation.

47 CFR 90.20(d)(14) (enhanced display)                                                                  page 67 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(d)(15)
Private Land Mobile Radio Services

          (15) This frequency is reserved for assignment to stations for intersystem operations only: Provided,
               however, That licensees holding a valid authorization to use this frequency for local base or mobile
               operations as of June 1, 1956, may continue to be authorized for such use.

          (16) This frequency is reserved primarily for assignment to state police licensees. Assignments to other
               police licensees will be made only where the frequency is required for coordinated operation with the
               state police system to which the frequency is assigned. Any request for such assignment must be
               supported by a statement from the state police system concerned indicating that the assignment is
               necessary for coordination of police activities.

          (17) In the State of Alaska only, the frequency 42.40 MHz is available for assignment on a primary basis
               to stations in the Common Carrier Rural Radio Service utilizing meteor burst communications. The
               frequency may be used by private radio stations for meteor burst communications on a secondary,
               noninterference basis. Usage shall be in accordance with part 22 of this chapter or part 90. Stations
               utilizing meteor burst communications shall not cause harmful interference to stations of other radio
               services operating in accordance with the allocation table.

          (18) No new licenses will be granted for one-way paging under § 90.487 for use on this frequency after
               August 1, 1980. This frequency is available to persons eligible for station licenses under the
               provisions of paragraph (a)(2)(v) of this section on a co-equal basis with one-way paging users
               under § 90.487 prior to August 1, 1985, and on a primary basis after August 1, 1985. Only A1A, A1D,
               A2B, A2D, F1B, F1D, F2B, F2D, G1B, G1D, G2B, G2D emissions and power not exceeding 10 watts will
               be authorized. Antennas having gain greater than 0 dBd will not be authorized. Transmissions shall
               not exceed two seconds duration.

          (19) This frequency is reserved for assignment to stations in this service for intersystem operations only
               and these operations must be primarily base-mobile communications.

          (20) In the State of Alaska only, the frequency 45.90 MHz is available for assignment on a primary basis
               to private land mobile radio stations utilizing meteor burst communications. The frequency may be
               used by common carrier stations for meteor burst communications on a secondary, noninterference
               basis. Usage shall be in accordance with part 22 of this chapter and part 90. Stations utilizing
               meteor burst communications shall not cause harmful interference to stations of other radio
               services operating in accordance with the allocation table.

          (21) This frequency will be assigned only in accordance with a geographical assignment plan and is
               reserved primarily for assignment to Highway maintenance systems operated by states. The use of
               this frequency by other Highway maintenance licensees will be authorized only where such use is
               necessary to coordinate activities with the particular state to which the frequency is assigned. Any
               request for such use must be supported by a statement from the state concerned.

          (22) Notwithstanding the provisions of paragraph (d)(21) of this section, this frequency may be used by
               any licensees in the Public Safety Pool without a separate license for the purpose of operating self-
               powered vehicle detectors for traffic control and safety purposes, on a secondary basis, in
               accordance with § 90.269.

          (23) Thus frequency is reserved for assignment only to national organizations eligible for disaster relief
               operations under paragraph (a)(2)(vii) of this section.

          (24) Assignment and use of frequencies in the band 72–76 MHz are governed by § 90.257 for
               operational-fixed stations and by § 90.241 for emergency call box operations. Specific frequencies
               are listed at § 90.257(a)(1).

47 CFR 90.20(d)(24) (enhanced display)                                                                   page 68 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.20(d)(25)
Private Land Mobile Radio Services

          (25) This frequency is available to Public Safety Pool licensees for fire call box operations on a shared
               basis in Industrial/Business Pool. All communications on this frequency must be conducted with
               persons or organizations charged with specific fire protection responsibility. All operations on this
               frequency are subject to the provisions of § 90.257(b).

          (26) Assignment of frequencies in this band are subject to the provisions of § 90.173. Licensees as of
               August 18, 1995 who operate systems in the 150–170 MHz band that are 2.5 kHz removed from
               regularly assignable frequencies may continue to operate on a secondary, non-interference basis
               after August 1, 2003.

          (27) This frequency will be assigned with an authorized bandwidth not to exceed 11.25 kHz. In the
               450–470 MHz band, secondary telemetry operations pursuant to § 90.238(e) will be authorized on
               this frequency.

          (28) This frequency is not available for assignment in this service in Puerto Rico or the Virgin Islands.

          (29) This frequency is removed by 22.5 kHz from frequencies assigned to other radio services. Utilization
               of this frequency may result in, as well as be subject to, interference under certain operating
               conditions. In considering the use of this frequency, adjacent channel operations should be taken
               into consideration. If interference occurs, the licensee may be required to take the necessary steps
               to resolve the problem. See § 90.173(b).

          (30) This frequency will be authorized a channel bandwidth of 25 kHz.

          (31) The maximum output power of any transmitter authorized to operate on this frequency shall not
               exceed 100 watts. Stations authorized prior to July 15, 1992 for fixed operations will be permitted to
               continue such operations, but at a maximum transmitter power output of 10 watts.

          (32) The maximum effective radiated power (ERP) may not exceed 20 watts for fixed stations and 2 watts
               for mobile stations. The height of the antenna system may not exceed 15.24 meters (50 ft.) above
               ground. All such operation is on a secondary basis to adjacent channel land mobile operations.

          (33) For FM transmitters, the sum of the highest modulating frequency in Hertz and the amount of the
               frequency deviation or swing in Hertz may not exceed 2800 Hz and the maximum deviation may not
               exceed 2.5 kHz. For AM transmitters, the highest modulation frequency may not exceed 2000 Hz.
               The carrier frequency must be maintained within .0005 percent of the center of the frequency band,
               and the authorized bandwidth may not exceed 6 kHz.

          (34) This frequency is available on a shared basis with the Industrial/Business Pool for remote control
               and telemetry operations.

          (35) Operational fixed stations must employ directional antennas having a front-to-back ratio of at least
               20 dB. Omnidirectional antennas having unity gain may be employed for stations communicating
               with at least three receiving locations separated by 160 degrees of azimuth.

          (36) The maximum power output of the transmitter may not exceed 50 watts for fixed stations and 1 watt
               for mobile stations. A1A, A1D, A2B, A2D, F1B, F1D, F2D, G1B, G1D, G2B, or G2D emission may be
               authorized.

          (37) Use of this frequency is limited to stations located at least 120.7 km (75 miles) from the center of
               any urbanized area of 200,000 or more population (U.S. Census of Population 1970). Operation is on
               a secondary basis to licensees of the Industrial/Business Pool.

          (38) [Reserved]

47 CFR 90.20(d)(38) (enhanced display)                                                                    page 69 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.20(d)(39)
Private Land Mobile Radio Services

          (39) In addition to other authorized uses, the use of F1B, F1D, F2B or F2D emission is permitted on this
               frequency for the operation of biomedical telemetry systems except in the following geographic
               locations:

                 (i)   New York, N.Y.-Northeastern New Jersey; Los Angeles-Long Beach, Calif.; Chicago, Ill.-
                       Northwestern Indiana; Philadelphia, Pa.-N.J.; Detroit, Mich.; San Francisco-Oakland, Calif.;
                       Boston, Mass.; Washington, D.C.-Md.-Va.; Cleveland, Ohio; St. Louis, Mo.-Ill.; Pittsburgh, Pa.;
                       Minneapolis-St. Paul, Minn.; Houston, Tex.; Baltimore, Md.; Dallas, Tex.; Milwaukee, Wis.;
                       Seattle-Everett, Wash.; Miami, Fla.; San Diego, Calif.; Atlanta, Ga.; Cincinnati, Ohio-Ky.; Kansas
                       City, Mo.-Kans.; Buffalo, N.Y.; Denver, Colo.; San Jose, Calif.; New Orleans, La.; Phoenix, Ariz.;
                       Portland, Oreg.-Wash.; Indianapolis, Ind.; Providence-Pawtucket-Warwick, R.I.-Mass.; Columbus,
                       Ohio; San Antonio, Tex.; Louisville, Ky.-Ind.; Dayton, Ohio; Forth Worth, Tex.; Norfolk-Portsmouth,
                       Va.; Memphis, Tenn.-Miss.; Sacramento, Calif.; Fort Lauderdale-Hollywood, Fla.; Rochester, N.Y.;
                       Tampa-St. Petersburg, Fla;

                (ii) The continuous carrier mode of operation may be used for telemetry transmissions on this
                     frequency for periods up to two-minutes duration; following which there must be a break in the
                     carrier for at least a one-minute period; and

                (iii) Geographical coordinates for the above-listed urbanized areas may be found at Table 1 of §
                      90.635.

          (40) This frequency may be designated by common consent as an intersystem mutual assistance
               frequency under an area-wide medical communications plan.

          (41) This frequency is available nationwide for use in police emergency communications networks
               operated under statewide law enforcement emergency communications plans.

          (42) This frequency may not be assigned within 161 km (100 miles) of New Orleans, La. (coordinates
               29°56′53″ N and 90°04′10″ W).

          (43) [Reserved]

          (44) This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

          (45) Operations on this frequency are limited to 30 watts transmitter output power.

          (46) This frequency is shared with the Industrial/Business Pool in Puerto Rico and the Virgin Islands.

          (47) This frequency may be assigned to stations in the Public Safety Pool in accordance with the
               provisions of § 90.265.

          (48) Frequencies in this band will be assigned only for transmitting hydrological or meteorological data or
               for low power wireless microphones in accordance with the provisions of § 90.265.

          (49) This frequency may be assigned only for forest firefighting and conservation activities in accordance
               with the provisions of § 90.265.

         (50)–(51) [Reserved]

          (52) In addition to agencies responsible for forest fire prevention, detection, and suppression, this
               frequency may be assigned to conservation agencies which do not have forest fire responsibilities
               on a secondary basis to any U.S. Government stations, Provided, That such assignment is necessary
               to permit mobile relay operation by such agencies.

47 CFR 90.20(d)(52) (enhanced display)                                                                       page 70 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.20(d)(53)
Private Land Mobile Radio Services

          (53) This frequency is subject to the provisions of paragraph (e)(6) of this section.

          (54) For FM transmitters, the sum of the highest modulating frequency in hertz and the amount of the
               frequency deviation or swing in hertz may not exceed 1700 Hz and the maximum deviation may not
               exceed 1.2 kHz. For AM transmitters, the highest modulating frequency may not exceed 1200 Hz.
               The carrier frequency must be maintained within .0005 percent of the center of the frequency band,
               and the authorized bandwidth may not exceed 3 kHz.

          (55) Subpart T of this part contains rules for assignment of frequencies in the 220–222 MHz band.

          (56) The frequencies available for use at fixed stations in this band and the requirements for assignment
               are set forth in § 90.261. Operation on these frequencies is secondary to stations in the Industrial/
               Business Pool where they are assigned for land mobile operations.

          (57) This frequency is available for systems first licensed prior to August 18, 1995. No new systems will
               be authorized after August 18, 1995, but prior authorized systems may be modified, expanded, and
               renewed.

          (58) This frequency is available for systems first licensed prior to March 31, 1980, for radio call box
               communications related to safety on highways in accordance with the provisions of § 90.241(c). No
               new systems will be authorized of this nature, but systems authorized prior to March 31, 1980 may
               be modified, expanded, and renewed.

          (59) The continuous carrier mode of operation may be used for telemetry transmission on this frequency.

          (60) Paging licensees as of March 20, 1991, may continue to operate on a primary basis until January 14,
               1998.

          (61) Highway radio call box operations first licensed prior to March 31, 1980 on this frequency may
               continue to operate in accordance with paragraph (d)(58) of this section.

          (62) This frequency is also authorized for use by biomedical telemetry stations. F1B, F1D, F2B, F2D, F3E,
               G1B, G1D, G2B, G2D, and G3E emissions may be authorized for biomedical transmissions.

          (63) Available for medical services mobile operations in the Public Safety Pool in accordance with
               paragraph (d)(61) of this section.

          (64) Use of this frequency is on a secondary basis, limited to 2 watts output power and subject to the
               provisions of 90.267(h)(1), (h)(2), (h)(3), and (h)(4).

          (65) This frequency is primarily authorized for use in the dispatch of medical care vehicles and personnel
               for the rendition or delivery of medical services. This frequency may also be assigned for intra-
               system and inter-system mutual assistance purposes. For uniformity in usage these frequency pairs
               may be referred to by channel name as follows:

                        Frequencies base and mobile (megahertz)            Mobile only (MHz)       Channel name
                 462.950                                                                467.950 MED–9
                 462.95625                                                            467.95625 MED–91
                 462.9625                                                              467.9625 MED–92
                 462.96875                                                            467.96875 MED–93
                 462.975                                                                467.975 MED–10
                 462.98125                                                            467.98125 MED–101

47 CFR 90.20(d)(65) (enhanced display)                                                                  page 71 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(d)(66)
Private Land Mobile Radio Services

                         Frequencies base and mobile (megahertz)            Mobile only (MHz)       Channel name
                 462.9875                                                              467.9875 MED–102
                 462.99375                                                            467.99375 MED–103

          (66) For applications for new radio systems, the thirty-two frequency pairs listed in paragraph (d)(66)(i) of
               this section will be assigned in a block for shared operation under § 90.20(a)(1)(iii) or §
               90.20(a)(2)(xiii) subject to the following:

                 (i)   For uniformity in usage, these frequency pairs may be referred to by channel name as follows:

                             Frequencies base and mobile (megahertz)          Mobile only (MHz)       Channel name
                        463.000                                                            468.000 MED–1
                        463.00625                                                       468.00625 MED–11
                        463.0125                                                         468.0125 MED–12
                        463.01875                                                       468.01875 MED–13
                        463.025                                                            468.025 MED–2
                        463.03125                                                       468.03125 MED–21
                        463.0375                                                         468.0375 MED–22
                        463.04375                                                       468.04375 MED–23
                        463.050                                                            468.050 MED–3
                        463.05625                                                       468.05625 MED–31
                        463.0625                                                         468.0625 MED–32
                        463.06875                                                       468.06875 MED–33
                        463.075                                                            468.075 MED–4
                        463.08125                                                       468.08125 MED–41
                        463.0875                                                         468.0875 MED–42
                        463.09375                                                       468.09375 MED–43
                        463.100                                                            468.100 MED–5
                        463.10625                                                       468.10625 MED–51
                        463.1125                                                         468.1125 MED–52
                        463.11875                                                       468.11875 MED–53
                        463.125                                                            468.125 MED–6
                        463.13125                                                       468.13125 MED–61
                        463.1375                                                         468.1375 MED–62
                        463.14375                                                       468.14375 MED–63
                        463.150                                                            468.150 MED–7
                        463.15625                                                       468.15625 MED–71
                        463.1625                                                         468.1625 MED–72
                        463.16875                                                       468.16875 MED–73
                        463.175                                                            468.175 MED–8
                        463.18125                                                       468.18125 MED–81
                        463.1875                                                         468.1875 MED–82

47 CFR 90.20(d)(66)(i) (enhanced display)                                                                 page 72 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(d)(66)(ii)
Private Land Mobile Radio Services

                             Frequencies base and mobile (megahertz)           Mobile only (MHz)        Channel name
                       463.19375                                                          468.19375 MED–83

                (ii) Except as provided in paragraphs (d)(66)(iv) and (v) of this section, mobile or portable stations
                     licensed prior to July 6, 2000, must employ equipment that is both wired and equipped to
                     transmit/receive, respectively, on each of the following MED frequency pairs with transmitters
                     operated on the 468 MHz frequencies: MED–1, MED–2, MED–3, MED–4, MED–5, MED–6,
                     MED–7, and MED–8.

                (iii) Except as provided in paragraphs (d)(66)(v) and (vi) of this section, mobile or portable stations
                      licensed on or after July 6, 2000, must employ equipment that is both wired and equipped to
                      transmit/receive, respectively, on each of the following MED frequency pairs with transmitters
                      operated on the 468 MHz frequencies: MED–1, MED–12, MED–2, MED–22, MED–3, MED–32,
                      MED–4, MED–42, MED–5, MED–52, MED–6 MED–62, MED–7, MED–72, MED–8, and MED–82.

                (iv) Except as provided in paragraphs (d)(66)(v) and (vi) of this section, mobile or portable stations
                     licensed on or after January 1, 2006, must employ equipment that is both wired and equipped
                     to transmit/receive, respectively, on each of these MED frequency pairs with transmitters
                     operated on the 468 MHz frequencies.

                (v) Portable (hand-held) units operated with a maximum output power of 2.5 watts are exempted
                    from the multi-channel equipment requirements specified in paragraphs (d)(66)(ii), (d)(66)(iii),
                    and (d)(66)(iv) of this section.

                (vi) Stations located in areas above line A, as defined in § 90.7 will be required to meet multi-
                     channel equipment requirements only for those frequencies up to the number specified in
                     paragraphs (d)(66)(ii), (d)(66)(iii), and (d)(66)(iv) of this section that have been assigned and
                     coordinates with Canada in accordance with the applicable U.S.-Canada agreement.

          (67) This frequency is authorized for use only for operations in biomedical telemetry stations. F1B, F1D,
               F2B, F2D, F3E, G1B, G1D, G2B, G2D and G3E emissions may be authorized. Entities eligible in the
               Public Safety Pool may use this frequency on a secondary basis for any other permissible
               communications consistent with § 90.20(a)(1)(iii) or § 90.20(a)(2)(xiii).

          (68) Subpart L of this part contains rules for assignment of frequencies in the 470–512 MHz band.

          (69) Subpart S of this part contains rules for assignment of frequencies in the 806–817 MHz and
               851–862 MHz bands.

          (70) Assignment of frequencies above 928 MHz for operational-fixed stations is governed by part 101 of
               this chapter.

          (71) Frequencies in this band are available only for one-way paging operations in accordance with §
               90.494.

          (72) This frequency band is available to stations in this service subject to the provisions of § 90.259.

          (73) Available only on a shared basis with stations in other services, and subject to no protection from
               interference due to the operation of industrial, scientific, or medical (ISM) devices. In the band
               2483.5–2500 MHz, no applications for new stations or modification to existing stations to increase
               the number of transmitters will be accepted. Existing licensees as of July 25, 1985, and licensees
               whose initial applications were filed on or before July 25, 1985, are grandfathered and their

47 CFR 90.20(d)(73) (enhanced display)                                                                      page 73 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(d)(74)
Private Land Mobile Radio Services

                operations are on a co-primary basis with the mobile-satellite and radiodetermination-satellite
                services, and in the segment 2495–2500 MHz, their operations are also on a co-primary basis with
                part 27 fixed and mobile except aeronautical mobile service operations.

          (74) This band is available for Digital Termination Systems and for associated internodal links in the
               Point-to-Point Microwave Radio Service. No new licenses will be issued under this subpart but
               current licenses will be renewed.

          (75) Appropriate frequencies in the band 2000–3000 kHz which are designated in part 80 of this chapter
               as available to Public Ship Stations for telephone communications with Public Coast Stations may
               be assigned on a secondary basis to fixed Stations in the Public Safety Pool for communication with
               Public Coast Stations only, provided such stations are located in the United States and the following
               conditions are met:

                 (i)   That such fixed station is established pursuant to the eligibility provisions of (§ 90.47) and that
                       the isolated area involved is an island or other location not more than 480 km (300 statute
                       miles) removed from the desired;

                (ii) That evidence is submitted showing that an arrangement has been made with the coast station
                     licensee for the handling of emergency communications permitted by § 80.453 of this chapter
                     and § 90.20(a)(2)(x)(C); and

                (iii) That operation of the Public Safety fixed station shall at no time conflict with any provision of
                      part 80 of this chapter and further, that such operation in general shall conform to the practices
                      employed by Public Ship Stations for radiotelephone communication with the same Public
                      Coast Station.

          (76) This frequency is authorized only for communications between medical facilities vehicles and
               personnel related to medical supervision and instruction for the treatment and transport of patients
               in the rendition or delivery of medical services. F1B, F1D, F2B, F2D, G1B, G1D, G2B, F3E and G3E
               emissions are authorized. Public Safety entities may use this frequency on a secondary basis for any
               other permissible communications consistent with § 90.20(a)(1)(iii) or § 90.20(a)(2)(xiii).

          (77) Subpart R of this part contains rules for assignment of channels in the 758–775 MHz and 788–805
               MHz bands.

          (78) Paging operations are not permitted on this frequency.

          (79) This frequency will be secondary to marine port operations within 161 km (100 miles) of Los
               Angeles, Calif. (coordinates 34°03′15″ N and 118°14′28″ W).

          (80) After December 7, 2000 this frequency is available primarily for public safety interoperability only
               communications. Stations licensed prior to December 7, 2000 may continue to use this frequency on
               a co-primary basis until January 1, 2005. After January 1, 2005, all operations will be secondary to
               co-channel interoperability communications. Analog FM emission shall exclusively be used for
               operation on the VHF and UHF interoperability channels.

          (81) After December 7, 2000 new stations will only be licensed with an authorized bandwidth not to
               exceed 1125 kHz. Licensees authorized prior to December 7, 2000 may continue to use bandwidths
               wider that 1125 kHz on a co-primary basis until January 1, 2005. After January 1, 2005, all stations
               operating with an authorized bandwidth greater than 11.25 kHz will be secondary to adjacent
               channel interoperability operations.

47 CFR 90.20(d)(81) (enhanced display)                                                                       page 74 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(d)(82)
Private Land Mobile Radio Services

          (82) This frequency is reserved for assignment only in support of, and on a secondary basis to,
               nationwide interoperability use.

          (83) This interoperability frequency is dedicated for the express purpose of nationwide interoperability
               calling.

          (84) Operation on this frequency is subject to the low power provisions of § 90.267. This frequency is
               assigned to the Public Safety Group in the low power pool.

          (85) Subpart Y of this part contains rules for assignment of frequencies in the 4940–4990 MHz band.

          (86) Subpart M of this part contains rules for assignment of frequencies in the 5850–5925 MHz band.

          (87) The use the frequencies 150.775 MHz and 150.790 MHz are limited to a transmitter output power of
               100 watts Effective Radiated Power (ERP) as of May 27, 2005.

          (88) Use of this frequency is limited to stations licensed as of May 27, 2005.

          (89) As of March 25, 2007, the FCC will cease to issue licenses for new stations in the fixed and mobile
               services in the following bands: 5900–5950 kHz, 7300–7350 kHz and 9400–9500 kHz. As of March
               29, 2009, the FCC will cease to issue licenses for new stations in the fixed and mobile services in the
               band 7350–7400 kHz and, in the U.S. Pacific insular areas in Region 3, the band 7400–7450 kHz.
               Stations licensed as of March 25, 2007 in the bands 5900–5950 kHz, 7300–7350 kHz and
               9400–9500 kHz and as of March 29, 2009 for the band 7350–7400 kHz in Region 2 and the band
               7350–7450 kHz in Region 3 shall:

          (1) Be limited to communications only within the United States and its insular areas;

          (2) Not cause harmful interference to the broadcasting service;

          (3) Be limited to the minimum power needed to achieve communications; and

          (4) Take account of the seasonal use of frequencies by the broadcasting service published in accordance
          with Article 12 of the ITU Radio Regulations.

          (90) The maximum effective radiated power (ERP) may not exceed 2 watts for mobile stations, and 5
               watts for mobile repeater stations and hand-carried transmitters that communicate directly with
               mobile repeater stations.

          (91) This frequency is available on a shared basis both for remote control and telemetry operations and
               for mobile repeater operations. The authorized bandwidth may not exceed 11.25 kHz.

          (92) This frequency is available on a shared basis with the Industrial/Business Pool for remote control
               and telemetry operations. Licensees seeking primary status for the use of this frequency for mobile
               repeater stations and hand-carried transmitters that communicate directly with mobile repeater
               stations must describe the area of normal day-to-day operations either in terms of operation in a
               specific county or in the terms of maximum distance from a geographic center (latitude and
               longitude) and shall be subject to the frequency coordination requirements of § 90.175.

          (93) Mobile repeaters operating on this frequency are subject to a channel loading requirement of 50
               transmitter-receivers. Loading standards will be applied in terms of the number of units actually in
               use or to be placed in use within 8 months following authorization. A licensee will be required to
               show that an assigned frequency is at full capacity before it may be assigned a second or additional
47 CFR 90.20(d)(93) (enhanced display)                                                                   page 75 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(e)
Private Land Mobile Radio Services

                frequency. Channel capacity may be reached either by the requirements of a single licensee or by
                several users sharing a channel. Until a channel is loaded to capacity it will be available for
                assignment to other users in the same area.

     (e) Additional frequencies available. In addition to the frequencies shown in the frequency table of this
         section, the following frequencies are available in this service. (See also § 90.253.)

           (1) Substitution of frequencies available below 25 MHz may be made in accordance with the provisions
               of § 90.263.

           (2) Frequencies in the band 73.0–74.6 MHz may be assigned to stations authorized their use on or
               before December 1, 1961, but no new stations will be authorized in this band, nor will expansion of
               existing systems be permitted. See also § 90.257.

           (3) [Reserved]

           (4) Frequencies in the 421–430 MHz band are available in the Detroit, Mich., Cleveland, Ohio and Buffalo,
               N.Y. areas in accordance with the rules in §§ 90.273 through 90.281.

           (5) A Police licensee may use transmitters on the frequencies indicated below in connection with official
               police activities without specific authorization from the Commission, provided that such use shall be
               on a secondary basis and shall not cause harmful interference to services of other licensees
               operating on regularly assigned frequencies, and further provided that all such use complies with the
               requirements of Federal, State and local laws. The provisions of § 90.429 shall not apply to
               transmitters authorized under this paragraph. To be eligible for operations in this manner, the
               transmitter must comply with all of the following requirements.

                 (i)   In accordance with §§ 90.203 and 2.803 of this chapter, the transmitter must be of a type which
                       has been certificated by the Commission.

                (ii) The carrier frequency shall be within the bands listed below and must be maintained within
                     0.005 percent of the frequency of operation. Use on assigned channel center frequencies is not
                     required.

                (iii) The emitted signal shall be non-voice modulation (type PO emission).

                (iv) The maximum occupied bandwidth, containing 99 percent of the radiated power, shall not
                     exceed 2.0 kHz.

                (v) The transmitter output power shall not exceed a mean power of 30 mW nor shall any peak
                    exceed 1 watt peak power, as measured into a 50 ohm resistive load. Should the transmitter be
                    supplied with a permanently attached antenna or should the transmitter and antenna
                    combination be contained in a sealed unit, the following standard may be used in lieu of the
                    above: the field strength of the fundamental signal of the transmitter and antenna combination
                    shall not exceed 0.4 V/m mean or 2.3 V/m peak when measured at a distance of 3 meters.

                (vi) The transmitter shall contain positive means to limit the transmission time to no more than 10
                     days. In the event of a malfunction of this positive means, the transmitter signal shall cease.
                     The use of battery life to accomplish the transmission time limitation is permissible.

           (6) The frequency 173.075 MHz is available for stolen vehicle recovery systems on a shared basis with
               Federal stations in the fixed and mobile services.

47 CFR 90.20(e)(6) (enhanced display)                                                                    page 76 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.20(e)(6)(i)
Private Land Mobile Radio Services

                 (i)   Stolen vehicle recovery systems are limited to tracking and recovering vehicles, cargo, and
                       hazardous materials that have been reported stolen or missing; missing or wanted persons;
                       and individuals at risk, or individuals of interest to law enforcement, only when established
                       boundaries are violated. Stolen vehicle recovery systems are not authorized for general purpose
                       tracking or monitoring. Mobile units may also transmit automatic collision notifications, vehicle
                       fire notifications, and carjacking alerts.

                 (ii) Any type of emission may be used within a maximum authorized bandwidth of 12.5 kHz, except
                      that stations that operate as part of a stolen vehicle recovery system that was authorized and
                      in operation prior to May 27, 2005 may operate with a maximum authorized bandwidth of 20
                      kHz until May 27, 2019. For a complete listing of emission symbols allowable under this part,
                      see § 2.201 of this chapter.

                (iii) Mobile transmitters operating on this frequency with emissions authorized in a maximum
                      bandwidth of 12.5 kHz are limited to 5.0 watts power output. Mobile transmitters operating on
                      this frequency with emissions authorized in a maximum bandwidth of 20 kHz are limited to 2.5
                      watts power output.

                (iv) Base station transmitters operating on this frequency with emissions authorized in a maximum
                     bandwidth of 12.5 kHz are limited to 300 watts ERP before February 18, 2009, and 500 watts
                     ERP thereafter. Base station transmitters operating on this frequency with emissions
                     authorized in a maximum bandwidth of 20 kHz are limited to 300 watts ERP.

                 (v) Transmissions from mobiles shall be limited to 400 milliseconds for every 10 seconds, except
                     when a vehicle is being tracked actively transmissions are limited to 400 milliseconds for every
                     second. Alternatively, transmissions from mobiles shall be limited to 7200 milliseconds for
                     every 300 seconds with a maximum of six such messages in any 30 minute period.

                (vi) Transmissions from base stations shall be limited to a total rate of five seconds every minute.

                (vii) Any entity eligible to hold authorizations in the Public Safety Pool in accordance with §§
                      90.20(a) and 90.111 of this chapter is authorized by this rule to operate mobile transmitters on
                      this frequency. No license will be issued for mobile transmitters.

                (viii) Applications for base stations operating on this frequency shall require coordination with the
                       Federal Government. Applicants shall perform an analysis for each base station that is located
                       within 169 km (105 miles) of a TV Channel 7 transmitter of potential interference to TV Channel
                       7 viewers. Applicants shall serve a copy of the analysis to the licensee of the affected TV
                       Channel 7 transmitter upon filing the application with the Commission. Such base stations will
                       be authorized if the applicant has limited the interference contour to include fewer than 100
                       residences or if the applicant:

                       (A) Shows that the proposed site is the only suitable location (which, at the application stage,
                           requires a showing that the proposed site is especially well-suited to provide the proposed
                           service);

                       (B) Develops a plan to control any interference caused to TV reception from operations; and

                       (C) Agrees to make such adjustments in the TV receivers affected as may be necessary to
                           eliminate interference caused by its operations.

47 CFR 90.20(e)(6)(viii)(C) (enhanced display)                                                             page 77 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                  47 CFR 90.20(e)(6)(ix)
Private Land Mobile Radio Services

                (ix) The licensee must eliminate any interference caused by its operation to TV Channel 7 reception
                     within 30 days after notification in writing by the Commission. If this interference is not
                     removed within this 30-day period, operation of the base station must be discontinued. The
                     licensee is expected to help resolve all complaints of interference.

           (7) Frequencies governed by § 90.35(c)(17).

     (f) Limitation on number of frequencies assignable. Normally only two frequencies or pairs of frequencies in
         the paired frequency mode of operation will be assigned for mobile service operations by a single
         applicant in a given area. The assignment of an additional frequency or pair of frequencies will be made
         only upon a satisfactory showing of need, except that:

           (1) Additional frequencies above 25 MHz may be assigned in connection with the operation of mobile
               repeaters in accordance with § 90.247 notwithstanding this limitation;

           (2) The frequency 39.06 MHz may be assigned notwithstanding this limitation;

           (3) Frequencies in the 25–50 MHz, 150–170 MHz, 450–512 MHz and 902–928 MHz bands may be
               assigned for the operation of Location and Monitoring Service (LMS) systems in accordance with
               the provisions of subpart M of this part, notwithstanding this limitation;

           (4) A licensee of a radio station in this service may operate radio units for the purpose of determining
               distance, direction, speed, or position by means of a radiolocation device on any frequency available
               for radiolocation purposes without additional authorization from the Commission, provided type
               accepted equipment or equipment authorized pursuant to § 90.203(b)(4) and (b)(5) of this part is
               used, and all other rule provisions are satisfied. A licensee in this service may also operate, subject
               to all of the foregoing conditions and on a secondary basis, radio units at fixed locations and in
               emergency vehicles that transmit on the frequency 24.10 GHz, both unmodulated continuous wave
               radio signals and modulated FM digital signals for the purpose of alerting motorists to hazardous
               driving conditions or the presence of an emergency vehicle. Unattended and continuous operation of
               such transmitters will be permitted.

           (5) A Police licensee may use, without special authorization from the Commission, any mobile service
               frequency between 40 and 952 MHz, listed in paragraph (c)(3) of this section, for communications in
               connection with physical surveillance, stakeouts, raids, and other such activities. Such use shall be
               on a secondary basis to operations of licensees regularly authorized on the assigned frequencies.
               The maximum output power that may be used for such communications is 2 watts. Transmitters,
               operating under this provision of the rules, shall be exempted from the station identification
               requirements of § 90.425. Use of frequencies not designated by a “PP” in the coordinator column of
               the frequency table in paragraph (c)(3) of this section, is conditional on the approval of the
               coordinator corresponding to each frequency. Spread spectrum transmitters may be operated on
               Public Safety Pool frequencies between 37 and 952 MHz, providing that they are certificated by the
               Commission under the provisions of § 2.803 of this chapter and § 90.203, and meet the following
               conditions:

                 (i)   Frequency hopping transmitters can be operated, with a maximum output power of 2 watts, on
                       any Public Safety Pool frequency between 37 and 952 MHz listed in paragraph (c)(3) of this
                       section. At least 20 hopping frequencies shall be used and the average time of occupancy on
                       any frequency shall not be greater than 1⁄10 second in every 2 seconds;

47 CFR 90.20(f)(5)(i) (enhanced display)                                                                 page 78 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.20(f)(5)(ii)
Private Land Mobile Radio Services

                (ii) Use of spread spectrum transmitters under paragraph (f)(4) of this section is subject to
                     approval by the applicable frequency coordinator of the radio services of the district in which
                     the license and equipment are to be used; and

                (iii) The use of direct sequence spread spectrum equipment is also permitted. Equipment must
                      meet the technical standards of § 15.247 of this chapter.

           (6) In addition to the frequencies assigned for mobile service operation, one base station frequency
               above 152 MHz may be assigned as a common frequency to all licensees in a particular area to
               permit intersystem communication between base stations or mobile stations or both. This frequency
               use will not be authorized in any area where all available frequencies are required for independent
               systems.

           (7) A licensee may use, without a specific authorization from the Commission, transmitters on the
               frequencies indicated below in connection with wildlife tracking and/or telemetry and in connection
               with official forestry-conservation activities, provided that such use shall be on a secondary basis
               and shall not cause harmful interference to services of other licensees operating on regularly
               assigned frequencies. The provisions of §§ 90.203, 90.425, and 90.429 shall not apply to
               transmitters complying with this paragraph. To be eligible for operations in this manner, the
               transmitter must comply with all of the following requirements.

                 (i)   The carrier frequency shall be within the bands listed below. The carrier frequency must be
                       maintained within 0.005 percent of the frequency of operation.

                       Use on assigned channel center frequencies is not required.

                (MHz)
                (ii) The emitted signal shall be non-voice modulation (A1D, A2D, F1D, or F2D emission).

                (iii) The maximum occupied bandwidth, containing 99 percent of the radiated power, shall not
                      exceed 0.25 kHz.

                (iv) The transmitter output power shall not exceed a mean power of 5 mW nor shall any peak
                     exceed 100 mW peak power, as measured into a permanently attached antenna; or if the
                     transmitter and antenna combination are contained in a sealed unit, the field strength of the
                     fundamental signal of the transmitter and antenna combination shall not exceed 0.29 V/m
                     mean or 1.28 V/m peak when measured at a distance of 3 meters.

                (v) The requirements of § 90.175 regarding frequency coordination apply.

           (8) An additional frequency may be assigned for paging operations from those frequencies available
               under paragraph (d)(13) of this section.

           (9) The frequency 155.340 MHz may be assigned as an additional frequency when it is designated as a
               mutual assistance frequency as provided in paragraph (d)(40) of this section.

          (10) Additional frequencies may be assigned for fixed station operations.

          (11) The assignment of an additional frequency or frequencies may be authorized notwithstanding this
               limitation for common, intra-county, intra-fire-district, or intrastate fire coordination operations. The
               frequency or frequencies requested must be in accordance with a frequency utilization plan, for the
               area involved, on file with the Commission.

47 CFR 90.20(f)(11) (enhanced display)                                                                       page 79 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.20(g)
Private Land Mobile Radio Services

     (g) Former public correspondence working channel in the maritime VHF (156–162 MHz) band allocated for
         public safety use in 33 inland Economic Areas.

           (1) We define service areas in the marine VHF (156–162 MHz) band by forty-two geographic areas
               called VHF Public Coast Service Areas (VPCSAs). See § 80.371(c)(1)(ii) of this chapter (Public
               correspondence frequencies). VPCSAs are based on, and composed of one or more of, the U.S.
               Department of Commerce's 172 Economic Areas (EAs). See 60 Fed Reg. 13114 (Mar. 10, 1995).
               Maps of the EAs and VPCSAs are available for inspection through the Federal Communications
               Commission's Reference Information Center. These maps and data are also available on the FCC
               website at https://www.fcc.gov/oet/info/maps/areas/. We number public correspondence channels
               in the maritime VHF (156–162 MHz) band as channels 24 to 28 and channels 84 to 88. Each channel
               number represents a channel pair. See § 80.371(c) of this chapter.

           (2) In VHF Public Coast Service Areas (VPCSAs) 10–42, the duplex channel pair 157.250 MHz/161.850
               MHz (VHF Maritime Channel 25) is allocated for public safety use by entities eligible for licensing
               under paragraph (a) of this section, and is designated primarily for the purpose of interoperability
               communications. See 47 CFR 80.371(c)(1)(ii) for the definitions of VPCSAs.

                 (i)   The channel pair 157.250 MHz/161.850 MHz was formerly allocated and assigned (under §
                       80.371(c) (1997) of this chapter) as a public correspondence working channel in the maritime
                       VHF 156–162 MHz band, and was also shared (under former § 90.283 (1997) of this chapter)
                       with private land mobile stations, including grandfathered public safety licensees. Thus, there
                       are grandfathered licensees nationwide (maritime and private land mobile radio stations,
                       including by rule waiver) operating on this channel both inside and outside of VPCSAs 10–42.

                (ii) The channel pairs 157.225 MHz/161.825 MHz and 157.275 MHz/161.875 MHz were formerly
                     allocated and assigned under this section as public safety interoperability channels but were
                     reallocated for assignment as VHF public coast station channels under § 80.371(c) of this
                     chapter. Public safety operations licensed on these channels as of March 2, 2009 or licensed
                     pursuant to an application filed prior to September 19, 2008, may remain authorized to operate
                     on the channels on a primary basis until March 2, 2024.

           (3) All applicants and licensees under this paragraph must comply with the relevant technical sections
               under this part unless otherwise stated in this paragraph (g) of this section using the following
               standards and procedures:

                 (i)   Provide evidence of frequency coordination in accordance with § 90.175. Public safety
                       coordinators except the Special Emergency Coordinator are certified to coordinate applications
                       for the channel pair 157.250 MHz/161.850 MHz (i.e., letter symbol PX under paragraph (c)(2) of
                       this section).

                (ii) Station power, as measured at the output terminals of the transmitter, must not exceed 50
                     Watts for base stations and 20 Watts for mobile stations, except in accordance with the
                     provisions of paragraph (g)(3)(vi) of this section. Antenna height (HAAT) must not exceed 122
                     meters (400 feet) for base stations and 4.5 meters (15 feet) for mobile stations, except in
                     accordance with paragraph (g)(3)(vi) of this section. Antenna height (HAAT) must not exceed
                     122 meters (400 feet) for base stations and 4.5 meters (15 feet) for mobile stations, except in
                     accordance with paragraph (g)(3)(vi) of this section. Such base and mobile channels shall not
                     be operated on board aircraft in flight.

                (iii) Frequency protection must be provided to other stations in accordance with the following
                      guidelines for each channel and for each area and adjacent area:
47 CFR 90.20(g)(3)(iii) (enhanced display)                                                                page 80 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.20(g)(3)(iii)(A)
Private Land Mobile Radio Services

                      (A) Protect coast stations licensed prior to July 6, 1998, by the required separations shown in
                          Table C below.

                      (B) Protect stations described in paragraph (g)(2)(i) of this section, by frequency coordination
                          in accordance § 90.175 of this part.

                      (C) Protect public safety stations granted under paragraph (g) of this section by frequency
                          coordination in accordance with § 90.175 of this part.

                      (D) Where the Public safety designated channel is not a Public safety designated channel in an
                          adjacent VPCSA: Applicants shall engineer base stations such that the maximum signal
                          strength at the boundary of the adjacent VPCSA does not exceed 5dBµV/m.

                (iv) The following table, along with the antenna height (HAAT) and power (ERP), must be used to
                     determine the minimum separation required between proposed base stations and co-channel
                     public coast stations licensed prior to July 6, 1998 under part 80 of this chapter. Applicants
                     whose exact ERP or HAAT are not reflected in the table must use the next highest figure shown.

                       Table C—Required Separation in Kilometers (Miles) of Base Station From
                                              Public Coast Stations

                                                          Base Station Characteristics
                              HAAT                                          ERP (watts)
                          Meters (feet)            400           300             200           100              50
                       15 (50)                138 (86)     135 (84)         129 (80)      129 (80)         116 (72)
                       30 (100)               154 (96)     151 (94)         145 (90)      137 (85)         130 (81)
                       61 (200)               166 (103)    167 (104)        161 (100)     153 (95)         145 (90)
                       122 (400)              187 (116)    177 (110)        183 (114)     169 (105)        159 (99)

                (v) In the event of interference, the Commission may require, without a hearing, licensees of base
                    stations authorized under this section that are located within 241 kilometers (150 miles) of a
                    co-channel public coast, I/LT, or grandfathered public safety station licensed prior to July 6,
                    1998, or an international border, to reduce power, decrease antenna height, and/or install
                    directional antennas.

                      Mobile stations must be operated only within radio range of their associated base station.

                (vi) Applicants seeking to be licensed for stations exceeding the power/antenna height limits of the
                     table in paragraph (g)(3)(iv) of this section must request a waiver of that paragraph and must
                     submit with their application an interference analysis, based upon an appropriate, generally-
                     accepted terrain-based propagation model, that shows that co-channel protected entities,
                     described in paragraph (g)(3)(iii) of this section, would receive the same or greater interference
                     protection than the relevant criteria outlined in paragraph (g)(3)(iii) of this section.

     (h) Spectrum leasing arrangements. Notwithstanding any other provisions of this section to the contrary,
         licensees in the Public Safety Radio Services (see part 90, subpart B) may enter into spectrum leasing
         arrangements (see part 1, subpart X of this chapter) with entities providing communications in support of
         public safety operations.

47 CFR 90.20(h) (enhanced display)                                                                         page 81 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.20(i)
Private Land Mobile Radio Services

     (i)   Nationwide interoperability channels. The nationwide interoperability and mutual aid channels are listed
           below for the VHF, (including 220–222 MHz), UHF, 700 MHz and 800 MHz bands. (See §§ 90.20(d)(80),
           90.531(b)(1), 90.617(a)(1) and 90.720). Any Part 90 public safety eligible entity holding a Part 90 license
           may operate hand-held and vehicular mobile units on these channels without needing a separate
           authorization. Base stations or control stations operating on these channels must be licensed separately:
           Encryption may not be used on any of the interoperability or mutual aid calling channels.

                          VHF interoperability channel
                                                                                         Purpose
                                    (MHz)
 151.1375 MHz (base/mobile)                                                   Tactical.
 154.4525 MHz (base/mobile)                                                   Tactical.
 155.7525 MHz (base/mobile)                                                   Calling.
 158.7375 MHz (base/mobile)                                                   Tactical.
 159.4725 MHz (base/mobile)                                                   Tactical.

                            VHF mutual aid channel
                                                                                         Purpose
                                   (MHz)
 220.8025 MHz (base/mobile)                                                   Tactical.
 220.8075 MHz (base/mobile)                                                   Tactical.
 220.8125 MHz (base/mobile)                                                   Tactical.
 220.8175 MHz (base/mobile)                                                   Tactical.
 220.8225 MHz (base/mobile)                                                   Tactical.
 220.8275 MHz (base/mobile)                                                   Tactical.
 220.8325 MHz (base/mobile)                                                   Tactical.
 220.8375 MHz (base/mobile)                                                   Tactical.
 220.8425 MHz (base/mobile)                                                   Tactical.
 220.8475 MHz (base/mobile)                                                   Tactical.

                          UHF interoperability channel
                                                                                         Purpose
                                    (MHz)
 453.2125 MHz (base/mobile)                                                   Calling.
 458.2125 MHz (mobile)
 453.4625 MHz (base/mobile)                                                   Tactical.
 458.4625 MHz (mobile)
 453.7125 MHz (base/mobile)                                                   Tactical.
 458.7125 MHz (mobile)
 453.8625 MHz (base/mobile)                                                   Tactical.
 458.8625 MHz (mobile)

                         700 MHz interoperability channel
                                                                                          Purpose
                                     (MHz)
 769.14375 MHz (base/mobile)                                                    Tactical.
 799.14375 MHz (mobile)

47 CFR 90.20(i) (enhanced display)                                                                       page 82 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                             47 CFR 90.20(i)
Private Land Mobile Radio Services

                         700 MHz interoperability channel
                                                                   Purpose
                                     (MHz)
 769.24375 MHz (base/mobile)                                Calling.
 799.24375 MHz (mobile)
 769.39375 MHz (base/mobile)                                Tactical.
 769.39375 MHz (mobile)
 769.49375 MHz (base/mobile)                                Tactical.
 799.49375 MHz (mobile)
 769.64375 MHz (base/mobile)                                Tactical.
 799.64375 MHz (mobile)
 769.74375 MHz (base/mobile)                                Tactical.
 799.74375 MHz (mobile)
 769.99375 MHz (base/mobile)                                Tactical.
 799.99375 MHz (mobile)
 770.14375 MHz (base/mobile)                                Tactical.
 800.14375 MHz (mobile)
 770.24375 MHz (base/mobile)                                Tactical.
 800.24375 MHz (mobile)
 770.39375 MHz (base/mobile)                                Tactical.
 800.39375 MHz (mobile)
 770.49375 MHz (base/mobile)                                Tactical.
 800.49375 MHz (mobile)
 770.64375 MHz (base/mobile)                                Tactical.
 800.64375 MHz (mobile)
 770.89375 MHz (base/mobile)                                Tactical.
 800.89375 MHz (mobile)
 770.99375 MHz (base/mobile)                                Tactical.
 800.99375 MHz (mobile)
 773.00625 MHz (base/mobile)                                Tactical.
 803.00625 MHz (mobile)
 773.10625 MHz (base/mobile)                                Tactical.
 803.10625 MHz (mobile)
 773.25625 MHz (base/mobile)                                Calling.
 803.25625 MHz (mobile)
 773.35625 MHz (base/mobile)                                Tactical.
 803.35625 MHz (mobile)
 773.50625 MHz (base/mobile)                                Tactical.
 803.50625 MHz (mobile)
 773.60625 MHz (base/mobile)                                Tactical.
 803.60625 MHz (mobile)
 773.75625 MHz (base/mobile)                                Tactical.

47 CFR 90.20(i) (enhanced display)                                           page 83 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.20(i)
Private Land Mobile Radio Services

                         700 MHz interoperability channel
                                                                                      Purpose
                                     (MHz)
 803.75625 MHz (mobile)
 773.85625 MHz (base/mobile)                                                 Tactical.
 803.85625 MHz (mobile)
 774.00625 MHz (base/mobile)                                                 Tactical.
 804.00625 MHz (mobile)
 774.10625 MHz (base/mobile)                                                 Tactical.
 804.10625 MHz (mobile)
 774.25625 MHz (base/mobile)                                                 Tactical.
 804.25625 MHz (mobile)
 774.35625 MHz (base/mobile)                                                 Tactical.
 804.35625 MHz (mobile)
 774.50625 MHz (base/mobile)                                                 Tactical.
 804.50625 MHz (mobile)
 774.60625 MHz (base/mobile)                                                 Tactical.
 804.60625 MHz (mobile)
 774.85625 MHz (base/mobile)                                                 Tactical.
 804.85625 MHz (mobile)

                          800 MHz mutual aid channel
                                                                                     Purpose
                                   (MHz)
 851.0125 MHz (base/mobile)                                               Calling.
 806.0125 MHz (mobile)
 851.5125 MHz (base/mobile)                                               Tactical.
 806.5125 MHz (mobile)
 852.0125 MHz (base/mobile)                                               Tactical.
 807.0125 MHz (mobile)
 852.5125 MHz (base/mobile)                                               Tactical.
 807.0125 MHz (mobile)
 853.0125 MHz (base/mobile)                                               Tactical.
 808.0125 MHz (mobile)

[62 FR 18845, Apr. 17, 1997]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.20, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

47 CFR 90.20(i) (enhanced display)                                                                   page 84 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 90.22
Private Land Mobile Radio Services

§ 90.22 Paging operations.
Unless specified elsewhere in this part, paging operations may be authorized in the Public Safety Pool on any
frequency except those assigned under the provisions of § 90.20(d)(78). Paging operations on frequencies subject
to § 90.20(d)(78) authorized before August 17, 1974, may be continued only if they do not cause harmful
interference to regular operations on the same frequencies. Such paging operations may be renewed indefinitely on
a secondary basis to regular operations, except within 125 km (75 mi) of the following urbanized areas:

                                                                    North                    West
                       Urbanized area
                                                                   latitude                longitude
 New York, NY-Northeastern NJ                                          40-45-06.4                   73-59-37.5
 Los Angeles-Long Beach, CA                                            34-03-15.0               118-14-31.3
 Chicago, IL                                                           41-52-28.1                   87-38-22.2
 Philadelphia, PA-NJ                                                   39-56-58.4                   75-09-19.6
 Detroit, MI                                                           42-19-48.1                   83-02-56.7
 San Francisco-Oakland, CA                                             37-46-38.7               122-24-43.9
 Boston, MA                                                            42-21-24.4                   71-03-23.2
 Washington, DC-MD-VA                                                  38-53-51.4                   77-00-31.9
 Cleveland, OH                                                         41-29-51.2                   81-41-49.5
 St Louis, MO-IL                                                       38-37-45.2                   90-12-22.4
 Pittsburgh, PA                                                        40-26-19.2                   79-59-59.2
 Minneapolis-St Paul, MN                                               44-58-56.9                   93-15-43.8
 Houston, TX                                                           29-45-26.8                   95-21-37.8
 Baltimore, MD                                                         39-17-26.4                   76-36-43.9
 Dallas, TX                                                            32-47-09.5                   96-47-38.0
 Milwaukee, WI                                                         43-02-19.0                   87-54-15.3
 Seattle-Everett, WA                                                   47-36-31.4               122-20-16.5
 Miami, FL                                                             25-46-38.4                   80-11-31.2
 San Diego, CA                                                         32-42-53.2               117-09-24.1
 Atlanta, GA                                                           33-45-10.4                   84-23-36.7
 Cincinnati, OH-KY                                                       39-06-7.2                  84-30-34.8
 Kansas City, MO-KS                                                    39-04-56.0                   94-35-20.8
 Buffalo, NY                                                           42-52-52.2                   78-52-20.1
 Denver, CO                                                            39-44-58.0               104-59-23.9

[63 FR 68959, Dec. 14, 1998, as amended at 64 FR 36262, July 6, 1999; 65 FR 60874, Oct. 13, 2000]

§ 90.25 Non-Federal use of the Federal interoperability channels.
The Commission may authorize non-Federal licensees to operate mobile and portable radio units on the frequencies
listed below in Tables 1 and 2, provided the applicant includes with its application to the Commission, written
concurrence from the Statewide Interoperability Coordinator (SWIC) or state appointed official stating that the
application conforms to the agreement with a federal agency with a valid assignment from the National
Telecommunications and Information Administration.

47 CFR 90.25 (enhanced display)                                                                                  page 85 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.25
Private Land Mobile Radio Services

                            Table 1—Law Enforcement Plans (MHz)

                       LE VHF plan                                         LE UHF plan
                          Mobile          Mobile                              Mobile     Mobile
   Identifier                                             Identifier
                         transmit         receive                            transmit    receive
 LEA                167.0875 (S)              167.0875 LEB              414.0375 (S)      414.0375
 LE1                162.0875                  167.0875 LE10             418.9875          409.9875
 LE2                162.2625                  167.2500 LE11             419.1875          410.1875
 LE3                162.8375                  167.7500 LE12             419.6125          410.6125
 LE4                163.2875                  168.1125 LE13             414.0625 (S)      414.0625
 LE5                163.4250                  168.4625 LE14             414.3125 (S)      414.3125
 LE6                167.2500 (S)              167.2500 LE15             414.3375 (S)      414.3375
 LE7                167.7500 (S)              167.7500 LE16             409.9875 (S)      409.9875
 LE8                168.1125 (S)              168.1125 LE17             410.1875 (S)      410.1875
 LE9                168.4625 (S)              168.4625 LE18             410.6125 (S)      410.6125

(S)—Simplex.

                            Table 2—Incident Response Plans (MHz)

                       LE VHF Plan                                         LE UHF Plan
                           Mobile         Mobile                               Mobile    Mobile
       Identifier                                          Identifier
                          transmit        receive                             transmit   receive
 NC1 Calling          164.7125                169.5375 NC2 Calling        419.2375        410.2375
 IR1                  165.2500                170.0125 IR10               419.4375        410.4375
 IR2                  165.9625                170.4125 IR11               419.6375        410.6375
 IR3                  166.5750                170.6875 IR12               419.8375        410.8375
 IR4                  167.3250                173.0375 IR13               413.1875 (S)    413.1875
 IR5                  169.5375 (S)            169.5375 IR14               413.2125 (S)    413.2125
 IR6                  170.0125 (S)            170.0125 IR15               410.2375 (S)    410.2375
 IR7                  170.4125 (S)            170.4125 IR16               410.4375 (S)    410.4375
 IR8                  170.6875 (S)            170.6875 IR17               410.6375 (S)    410.6375
 IR9                  173.0375 (S)            173.0375 IR18               410.8375 (S)    410.8375

(S)—Simplex.

[83 FR 19980, May 7, 2018]

Effective Date Note: At 83 FR 19980, May 7, 2018, § 90.25 was added. This text contains information collection
and recordkeeping requirements and will not become effective until approval has been given by the Office of
Management and Budget.

47 CFR 90.25 (enhanced display)                                                                       page 86 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.31
Private Land Mobile Radio Services

Subpart C—Industrial/Business Radio Pool

Source: 62 FR 18874, Apr. 17, 1997, unless otherwise noted.

§ 90.31 Scope.
The Industrial/Business Radio Pool covers the licensing of the radio communications of entities engaged in
commercial activities, engaged in clergy activities, operating educational, philanthropic, or ecclesiastical
institutions, or operating hospitals, clinics, or medical associations. Rules as to eligibility for licensing, frequencies
available, permissible communications and classes and number of stations, and any special requirements are set
forth in the following sections.

§ 90.33 General eligibility.
     (a) In addition to the eligibility shown in the Industrial/Business Pool, eligibility is also provided for any
         corporation proposing to furnish nonprofit radiocommunication service to its parent corporation, to
         another subsidiary of the same parent, or to its own subsidiary. This corporate eligibility is not subject to
         the cooperative use provision of § 90.179.

     (b) Eligibility is also provided for a nonprofit corporation or association that is organized for the purpose of
         furnishing a radiocommunications service to persons who meet the eligibility requirements of the
         Industrial/Business Pool. Such use is subject to the cooperative use provisions of § 90.179.

§ 90.35 Industrial/Business Pool.
     (a) Eligibility. Persons primarily engaged in any of the following activities are eligible to hold authorizations in
         the Industrial/Business Pool to provide commercial mobile radio service as defined in part 20 of this
         chapter or to operate stations for transmission of communications necessary to such activities of the
         licensee:

           (1) The operation of a commercial activity;

           (2) The operation of educational, philanthropic, or ecclesiastical institutions;

           (3) Clergy activities; or

           (4) The operation of hospitals, clinics, or medical associations.

           (5) Public Safety Pool eligibles are eligible for Industrial/Business Pool spectrum only to The extent that
               they are engaged in activities listed in paragraphs (a)(1) through (4) of this section. Industrial/
               Business Pool spectrum many not be utilized for the purposes set forth in § 90.20(a).

     (b) Industrial/Business Pool frequencies.

           (1) The following table indicates frequencies available for assignment to Industrial/Business Pool
               stations, together with the class of station(s) to which they are normally assigned, the specific
               assignment limitations which are explained in paragraph (b) of this section, and the certified
               frequency coordinator for each frequency:

           (2) Unless otherwise specified, coordination of frequencies in the Industrial/Business pool must be done
               in accordance with the following:

47 CFR 90.35(b)(2) (enhanced display)                                                                         page 87 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(b)(2)(i)
Private Land Mobile Radio Services

                 (i)   Unless specified elsewhere in this part, frequencies without any coordinator specified in the
                       Coordinator column of paragraph (b)(3) of this section may be coordinated by any frequency
                       coordinator certified in the Industrial/Business Pool.

                (ii) A letter symbol in the Coordinator column of the frequency table in paragraph (b)(3) of this
                     section designates the mandatory certified frequency coordinator for the associated frequency
                     in the table. However, any coordinator certified in the Industrial/Business Pool may coordinate
                     applications on such frequencies provided the prior written consent of the designated
                     coordinator is obtained. Frequencies for which two coordinators are listed may be coordinated
                     by either of the listed coordinators.

                (iii) For frequencies above 150 MHz, applications for new or modified facilities on frequencies
                      shared prior to radio service consolidation by the former Manufacturers Radio Service, the
                      Forest Products Radio Service, the Power Radio Service, the Petroleum Radio Service, the Motor
                      Carrier Radio Service, the Railroad Radio Service, the Telephone Maintenance Radio Service and
                      the Automobile Emergency Radio Service may be coordinated by any certified Industrial/
                      Business Pool coordinator. However, in the event that the interference contour of a proposed
                      station would overlap the service contour of an existing station licensed on one of these
                      previously shared frequencies, the written concurrence of the coordinator associated with the
                      industry for which the existing station license was issued, or the written concurrence of the
                      licensee of the existing station, shall be obtained. For the purposes of this § 90.35, the service
                      contour for UHF stations is the 39 dBu contour; and the interference contour for UHF stations is
                      the 21 dBu contour; the service contour for VHF stations is the 37 dBu contour; and the
                      interference contour for VHF stations is the 19 dBu contour.

                (iv) The letter symbols listed in the Coordinator column of the frequency table in paragraph (b)(3) of
                     this section refer to specific frequency coordinators as follows:

                IP—Petroleum Coordinator

                IW—Power Coordinator

                LR—Railroad Coordinator

                LA—Automobile Emergency Coordinator

           (3) Frequencies.

                                         Industrial/Business Pool Frequency Table

                   Frequency or band                 Class of station(s)               Limitations        Coordinator
                                                                   Kilohertz
                 2000 to 25,000           Fixed, base or mobile                1, 90
                       2292               Base or mobile                       4, 5, 7.
                 2398                     ......do                             5, 7.
                 4637.5                   ......do                             5, 7.
                                                                  Megahertz
                 25.02                    ......do                             3, 4                  IP

47 CFR 90.35(b)(3) (enhanced display)                                                                        page 88 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)           Limitations        Coordinator
                 25.04                    ......do                          8                     IP
                 25.06                    ......do                          3, 4                  IP
                 25.08                    ......do                          8, 9                  IP
                 25.10                    ......do                          3, 4, 9               IP
                 25.12                    ......do                          9                     IP
                 25.14                    ......do                          3, 4, 9               IP
                 25.16                    ......do                          9                     IP
                 25.18                    ......do                          3, 4, 9               IP
                 25.20                    ......do                          9                     IP
                 25.22                    ......do                          4, 7                  IP
                 25.24                    ......do                                                IP
                 25.26                    ......do                          4, 7                  IP
                 25.28                    ......do                                                IP
                 25.30                    ......do                          4, 7                  IP
                 25.32                    ......do                                                IP
                 27.43                    ......do.
                 27.45                    ......do.
                 27.47                    ......do.
                 27.49                    ......do                          10.
                 27.51                    Mobile                            11.
                 27.53                    ......do                          11.
                 27.555                   Base or mobile                    89
                 27.615                   ......do                          89
                 27.635                   ......do                          89
                 27.655                   ......do                          89
                 27.765                   ......do                          89
                 27.86                    Base or mobile                    89
                 29.71                    ......do
                 29.73                    ......do.
                 29.75                    ......do.
                 29.77                    ......do.
                 29.79                    ......do.
                 30.58                    ......do.
                 30.60                    ......do.
                 30.62                    ......do.
                 30.64                    ......do.
                 30.66                    ......do                          4, 7.
                 30.68                    ......do.
                 30.70                    ......do                          4, 7                  IP
                 30.72                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                     page 89 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)           Limitations        Coordinator
                 30.74                    ......do                          4, 7.
                 30.76                    ......do.
                 30.78                    ......do                          4, 7                  IP
                 30.80                    ......do.
                 30.82                    ......do                          4, 7.
                 30.84                    Mobile                            11, 12.
                 30.86                    Base or mobile                    13
                 30.88                    ......do.
                 30.90                    ......do                          13.
                 30.92                    ......do.
                 30.94                    ......do                          13.
                 30.96                    ......do.
                 30.98                    ......do                          13.
                 31.00                    ......do.
                 31.02                    ......do                          13.
                 31.04                    ......do.
                 31.06                    ......do                          13.
                 31.08                    ......do.
                 31.10                    ......do                          13.
                 31.12                    ......do.
                 31.14                    ......do                          13.
                 31.16                    ......do.
                 31.20                    ......do.
                 31.24                    ......do.
                 31.28                    ......do.
                 31.32                    ......do.
                 31.36                    ......do.
                 31.40                    ......do.
                 31.44                    ......do.
                 31.48                    ......do.
                 31.52                    ......do.
                 31.56                    ......do.
                 31.60                    ......do.
                 31.64                    ......do.
                 31.68                    ......do.
                 31.72                    ......do.
                 31.76                    ......do.
                 31.80                    ......do.
                 31.84                    ......do.
                 31.88                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                     page 90 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 31.92                    ......do.
                 31.96                    ......do.
                 33.12                    Mobile                            11
                 33.14                    Mobile                            11, 12.
                 33.16                    Base or mobile
                 33.18                    ......do                                              IP
                 33.20                    ......do                                              IP
                 33.22                    ......do                                              IP
                 33.24                    ......do                                              IP
                 33.26                    ......do                                              IP
                 33.28                    ......do                                              IP
                 33.30                    ......do                                              IP
                 33.32                    ......do                                              IP
                 33.34                    ......do                                              IP
                 33.36                    ......do                                              IP
                 33.38                    ......do                                              IP
                 33.40                    Mobile                            12, 14.
                 35.02                    ......do                          11, 12, 13.
                 35.04                    Base or Mobile                    10.
                 35.06                    ......do.
                 35.08                    ......do.
                 35.10                    ......do.
                 35.12                    ......do.
                 35.14                    ......do.
                 35.16                    ......do.
                 35.18                    ......do.
                 35.28                    ......do.
                 35.32                    ......do.
                 35.36                    ......do.
                 35.40                    ......do.
                 35.44                    ......do
                 35.48                    ......do
                 35.52                    ......do
                 35.70                    ......do.
                 35.72                    ......do.
                 35.74                    ......do.
                 35.76                    ......do.
                 35.78                    ......do.
                 35.80                    ......do.
                 35.82                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 91 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)            Limitations        Coordinator
                 35.84                    ......do.
                 35.86                    ......do.
                 35.88                    ......do.
                 35.90                    ......do.
                 35.92                    ......do.
                 35.94                    ......do.
                 35.96                    ......do.
                 35.98                    ......do.
                 36.25                    ......do                             15                  IP
                 37.44                    ......do.
                 37.46                    ......do                                                 IW
                 37.48                    ......do                                                 IW
                 37.50                    ......do                                                 IW
                 37.52                    ......do                                                 IW
                 37.54                    ......do                                                 IW
                 37.56                    ......do                                                 IW
                 37.58                    ......do                                                 IW
                 37.60                    Base, mobile, or operational fixed   16                  IW
                 37.62                    Base or mobile                                           IW
                 37.64                    ......do                                                 IW
                 37.66                    ......do                                                 IW
                 37.68                    ......do                                                 IW
                 37.70                    ......do                                                 IW
                 37.72                    ......do                                                 IW
                 37.74                    ......do                                                 IW
                 37.76                    ......do                                                 IW
                 37.78                    ......do                                                 IW
                 37.80                    ......do                                                 IW
                 37.82                    ......do                                                 IW
                 37.84                    Base, mobile, or operational fixed   16                  IW
                 37.86                    Base or mobile                                           IW
                 37.88                    ......do.
                 41.71                    ......do                             15                  IP
                 42.96                    ......do.
                 42.98                    Mobile                               11, 12.
                 43.00                    Base or mobile
                 43.02                    ......do.
                 43.04                    ......do                             17.
                 43.06                    ......do.
                 43.08                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                      page 92 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 43.10                    ......do.
                 43.12                    ......do.
                 43.14                    ......do.
                 43.16                    Mobile.
                 43.18                    Base or mobile.
                 43.28                    ......do.
                 43.32                    ......do.
                 43.36                    ......do.
                 43.40                    ......do.
                 43.44                    ......do.
                 43.48                    ......do.
                 43.52                    ......do.
                 43.70                    ......do.
                 43.72                    ......do                          18.
                 43.74                    ......do                          18.
                 43.76                    ......do.
                 43.78                    ......do.
                 43.80                    ......do.
                 43.82                    ......do                          18.
                 43.84                    ......do                          18.
                 43.86                    ......do                          19.
                 43.88                    ......do                          19.
                 43.90                    ......do                          19.
                 43.92                    ......do                          18, 19.
                 43.94                    ......do                          19.
                 43.96                    ......do                          18.
                 43.98                    ......do.
                 44.00                    ......do.
                 44.02                    ......do.
                 44.04                    ......do.
                 44.06                    ......do.
                 44.08                    ......do.
                 44.10                    ......do                          20.
                 44.12                    ......do                          18.
                 44.14                    ......do.
                 44.16                    ......do                          18.
                 44.18                    ......do                          18.
                 44.20                    ......do                          18, 21.
                 44.22                    ......do.
                 44.24                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 93 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 44.26                    ......do.
                 44.28                    ......do.
                 44.30                    ......do.
                 44.32                    ......do                          18.
                 44.34                    ......do.
                 44.36                    ......do                          18, 19.
                 44.38                    ......do                          19.
                 44.40                    ......do                          18, 19.
                 44.42                    ......do                          19.
                 44.44                    ......do                          19.
                 44.46                    ......do                          18.
                 44.48                    ......do                          18.
                 44.50                    ......do.
                 44.52                    ......do.
                 44.54                    ......do.
                 44.56                    ......do.
                 44.58                    ......do.
                 44.60                    ......do.
                 47.44                    ......do.
                 47.48                    ......do.
                 47.52                    ......do.
                 47.56                    ......do.
                 47.60                    ......do.
                 47.64                    ......do.
                 47.68                    ......do.
                 47.70                    ......do                                              IW
                 47.72                    ......do                                              IW
                 47.74                    ......do                                              IW
                 47.76                    ......do                                              IW
                 47.78                    ......do                                              IW
                 47.80                    ......do                                              IW
                 47.82                    ......do                                              IW
                 47.84                    ......do                                              IW
                 47.86                    ......do                                              IW
                 47.88                    ......do                                              IW
                 47.90                    ......do                                              IW
                 47.92                    ......do                                              IW
                 47.94                    ......do                                              IW
                 47.96                    ......do                                              IW
                 47.98                    ......do                                              IW

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 94 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 48.00                    ......do                                              IW
                 48.02                    ......do                                              IW
                 48.04                    ......do                                              IW
                 48.06                    ......do                                              IW
                 48.08                    ......do                                              IW
                 48.10                    ......do                                              IW
                 48.12                    ......do                                              IW
                 48.14                    ......do                                              IW
                 48.16                    ......do                                              IW
                 48.18                    ......do                                              IW
                 48.20                    ......do                                              IW
                 48.22                    ......do                                              IW
                 48.24                    ......do                                              IW
                 48.26                    ......do                                              IW
                 48.28                    ......do                                              IW
                 48.30                    ......do                                              IW
                 48.32                    ......do                                              IW
                 48.34                    ......do                                              IW
                 48.36                    ......do                                              IW
                 48.38                    ......do                                              IW
                 48.40                    ......do                                              IW
                 48.42                    ......do                                              IW
                 48.44                    ......do                                              IW
                 48.46                    ......do                                              IW
                 48.48                    ......do                                              IW
                 48.50                    ......do                                              IW
                 48.52                    ......do                                              IW
                 48.54                    ......do                                              IW
                 48.56                    ......do.
                 48.58                    ......do.
                 48.60                    ......do.
                 48.62                    ......do.
                 48.64                    ......do.
                 48.66                    ......do.
                 48.68                    ......do.
                 48.70                    ......do.
                 48.72                    ......do.
                 48.74                    ......do.
                 48.76                    ......do                          18.
                 48.78                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 95 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 48.80                    ......do.
                 48.82                    ......do.
                 48.84                    ......do                          18.
                 48.86                    ......do                          18.
                 48.88                    ......do.
                 48.90                    ......do.
                 48.92                    ......do                          18.
                 48.94                    ......do.
                 48.96                    ......do.
                 48.98                    ......do.
                 49.00                    ......do.
                 49.02                    ......do                          18.
                 49.04                    ......do.
                 49.06                    ......do.
                 49.08                    ......do                          18.
                 49.10                    ......do                          18.
                 49.12                    ......do.
                 49.14                    ......do.
                 49.16                    ......do                          18.
                 49.18                    ......do.
                 49.20                    ......do                          18.
                 49.22                    ......do.
                 49.24                    ......do                          18.
                 49.26                    ......do                          18.
                 49.28                    ......do                          18.
                 49.30                    ......do.
                 49.32                    ......do.
                 49.34                    ......do.
                 49.36                    ......do                          18.
                 49.38                    ......do.
                 49.40                    ......do                          18.
                 49.42                    ......do.
                 49.44                    ......do.
                 49.46                    ......do                          18.
                 49.48                    ......do.
                 49.50                    ......do                          18.
                 49.52                    ......do.
                 49.54                    ......do.
                 49.56                    ......do.
                 49.58                    ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 96 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 72 to 76                 Operational fixed                22.
                 72.02                    Mobile                           23, 24.
                 72.04                    ......do                         23, 24.
                 72.06                    ......do                         23, 24.
                 72.08                    ......do                         23, 24, 25.
                 72.10                    ......do                         23, 24.
                 72.12                    ......do                         23, 24.
                 72.14                    ......do                         23, 24.
                 72.16                    ......do                         23, 24, 25.
                 72.18                    ......do                         23, 24.
                 72.20                    ......do                         23, 24.
                 72.22                    ......do                         23, 24.
                 72.24                    ......do                         23, 24, 25.
                 72.26                    ......do                         23, 24.
                 72.28                    ......do                         23, 24.
                 72.30                    ......do                         23, 24.
                 72.32                    ......do                         23, 24, 25.
                 72.34                    ......do                         23, 24.
                 72.36                    ......do                         23, 24.
                 72.38                    ......do                         23, 24.
                 72.40                    ......do                         23, 24, 25.
                 72.44                    ......do                         13, 24, 77.
                 72.48                    ......do                         13, 24, 77.
                 72.52                    ......do                         13, 24, 77.
                 72.56                    ......do                         13, 24, 77.
                 72.60                    ......do                         13, 24, 77.
                 74.61                    ......do                         26, 77.
                 74.63                    ......do                         26, 77.
                 74.65                    ......do                         26, 77.
                 74.67                    ......do                         26, 77.
                 74.69                    ......do                         26, 77.
                 74.71                    ......do                         26, 77.
                 74.73                    ......do                         26, 77.
                 74.75                    ......do                         26, 77.
                 74.77                    ......do                         26, 77.
                 74.79                    ......do                         26, 77.
                 75.21                    ......do                         26, 77.
                 75.23                    ......do                         26, 77.
                 75.25                    ......do                         26, 77.
                 75.27                    ......do                         26, 77.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 97 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations        Coordinator
                 75.29                    ......do                         26, 77.
                 75.31                    ......do                         26, 77.
                 75.33                    ......do                         26, 77.
                 75.35                    ......do                         26, 77.
                 75.37                    ......do                         26, 77.
                 75.39                    ......do                         26, 77.
                 75.44                    ......do                         13, 24, 77.
                 75.48                    ......do                         13, 24, 77.
                 75.52                    ......do                         13, 24, 77.
                 75.56                    ......do                         13, 24, 77.
                 75.60                    ......do                         13, 24, 77.
                 150 to 170               Base or mobile                   27.
                 150.815                  ......do                                             LA
                 150.830                  ......do                         28, 29              LA
                 150.845                  ......do                                             LA
                 150.8525                 ......do                         30                  LA
                 150.860                  ......do                                             LA
                 150.8675                 ......do                         30                  LA
                 150.875                  ......do                                             LA
                 150.8825                 ......do                         30                  LA
                 150.890                  ......do                                             LA
                 150.8975                 ......do                         30                  LA
                 150.905                  ......do                                             LA
                 150.920                  ......do                         28, 29              LA
                 150.935                  ......do                                             LA
                 150.9425                 ......do                         30                  LA
                 150.950                  ......do                                             LA
                 150.9575                 ......do                         30                  LA
                 150.965                  ......do                                             LA
                 150.9725                 ......do                         30                  LA
                 150.980                  ......do                         8                   IP
                 150.9875                 ......do                         8, 30               IP
                 150.995                  ......do                         31.
                 151.0025                 ......do                         30, 31
                 151.010                  ......do                         31.
                 151.0175                 ......do                         30, 31
                 151.025                  ......do                         31.
                 151.0325                 ......do                         30, 31
                 151.040                  ......do                         31.
                 151.0475                 ......do                         3031

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 98 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 151.055                  ......do                         31.
                 151.070                  Base                             28, 29, 31.
                 151.085                  Base or mobile                   31.
                 151.0925                 ......do                         30, 31
                 151.100                  ......do                         31.
                 151.1075                 ......do                         30, 31
                 151.115                  ......do                         31.
                 151.1225                 ......do                         30, 31
                 151.130                  ......do                         31.
                 151.1375                 ......do                         30, 31
                 151.145                  ......do                         31.
                 151.1525                 ......do                         30, 31
                 151.160                  ......do                         31.
                 151.1675                 ......do                         30, 31
                 151.175                  ......do                         31.
                 151.190                  Base                             28, 29, 31.
                 151.205                  Base or mobile                   31.
                 151.2125                 ......do                         30, 31
                 151.220                  ......do                         31.
                 151.2275                 ......do                         30, 31
                 151.235                  ......do                         31.
                 151.2425                 ......do                         30, 31
                 151.250                  ......do                         31.
                 151.2575                 ......do                         30, 31
                 151.265                  ......do                         31.
                 151.2725                 ......do                         30, 31
                 151.280                  ......do                         31.
                 151.2875                 ......do                         30, 31
                 151.295                  ......do                         31.
                 151.310                  Base                             28, 29, 31.
                 151.325                  Base or mobile                   31.
                 151.3325                 ......do                         30, 31
                 151.340                  ......do                         31.
                 151.3475                 ......do                         30, 31
                 151.355                  ......do                         31.
                 151.3625                 ......do                         30, 31
                 151.370                  ......do                         31.
                 151.3775                 ......do                         30, 31
                 151.385                  ......do                         31.
                 151.3925                 ......do                         30, 31

47 CFR 90.35(b)(3) (enhanced display)                                                             page 99 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 151.400                  ......do                          31.
                 151.4075                 ......do                          30, 31
                 151.415                  ......do                          31.
                 151.4225                 ......do                          30, 31
                 151.430                  ......do                          31.
                 151.4375                 ......do                          30, 31
                 151.445                  ......do                          31.
                 151.4525                 ......do                          30, 31
                 151.460                  ......do                          31.
                 151.4675                 ......do                          30, 31
                 151.475                  ......do                          31.
                 151.4825                 ......do                          30, 31
                 151.490                  ......do                          13, 32.
                 151.4975                 ......do                          30, 32
                 151.505                  ......do                          17.
                 151.5125                 ......do                          30, 17
                 151.520                  ......do.
                 151.5275                 ......do                          30
                 151.535                  ......do.
                 151.5425                 ......do                          30
                 151.550                  ......do.
                 151.5575                 ......do                          30
                 151.565                  ......do.
                 151.5725                 ......do                          30
                 151.580                  ......do.
                 151.5875                 ......do                          30
                 151.595                  ......do.
                 151.6025                 ......do                          30
                 151.625                  ......do                          10.
                 151.640                  ......do                          10, 33.
                 151.6475                 ......do                          30
                 151.655                  ......do.
                 151.6625                 ......do                          30
                 151.670                  ......do                          30
                 151.6775                 ......do                          30
                 151.685                  ......do.
                 151.700                  ......do                          10, 30, 34.
                 151.715                  ......do.
                 151.7225                 ......do                          30
                 151.730                  ......do                          30

47 CFR 90.35(b)(3) (enhanced display)                                                             page 100 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 151.7375                 ......do                          30
                 151.745                  ......do.
                 151.760                  ......do                          10, 30, 34.
                 151.775                  ......do.
                 151.7825                 ......do                          30
                 151.790                  ......do                          30
                 151.7975                 ......do                          30
                 151.805                  ......do.
                 151.835                  Base or mobile.
                 151.8425                 ......do                          30
                 151.850                  ......do                          30
                 151.8575                 ......do                          30
                 151.865                  ......do.
                 151.895                  ......do
                 151.9025                 ......do                          30
                 151.910                  ......do                          30
                 151.9175                 ......do                          30
                 151.925                  ......do.
                 151.955                  ......do
                 151.9625                 ......do                          30
                 151.970                  ......do                          30
                 151.9775                 ......do                          30
                 151.985                  ......do.
                 152.2625                 ......do                          33.
                 152.270                  ......do                          6.
                 152.2775                 ......do                          6, 30
                 152.285                  ......do                          6.
                 152.2925                 ......do                          6, 30
                 152.300                  ......do                          6.
                 152.3075                 ......do                          6, 30
                 152.315                  ......do                          6.
                 152.3225                 ......do                          6, 30
                 152.330                  ......do                          6.
                 152.3375                 ......do                          6, 30
                 152.345                  ......do                          6.
                 152.3525                 ......do                          6, 30
                 152.360                  ......do                          6.
                 152.3675                 ......do                          6, 30
                 152.375                  ......do                          6.
                 152.3825                 ......do                          6, 30

47 CFR 90.35(b)(3) (enhanced display)                                                              page 101 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)          Limitations         Coordinator
                 152.390                  ......do                          6.
                 152.3975                 ......do                          6, 30
                 152.405                  ......do                          6.
                 152.4125                 ......do                          6, 30
                 152.420                  ......do                          6.
                 152.4275                 ......do                          6, 30
                 152.435                  ......do                          6.
                 152.4425                 ......do                          6, 30
                 152.450                  ......do                          6.
                 152.4575                 ......do                          6, 30
                 152.465                  ......do                          79.
                 152.480                  ......do                          29, 36, 37, 38.
                 152.8625                 ......do                          33.
                 152.870                  ......do
                 152.8775                 ......do                          30
                 152.885                  ......do.
                 152.8925                 ......do                          30
                 152.900                  ......do.
                 152.9075                 ......do                          30
                 152.915                  ......do.
                 152.9225                 ......do                          30
                 152.930                  ......do.
                 152.9375                 ......do                          30
                 152.945                  ......do.
                 152.9525                 ......do                          30
                 152.960                  ......do.
                 152.9675                 ......do                          30
                 152.975                  ......do.
                 152.9825                 ......do                          30
                 152.990                  ......do.
                 152.9975                 ......do                          30
                 153.005                  ......do.
                 153.0125                 ......do                          30
                 153.020                  ......do.
                 153.0275                 ......do                          30
                 153.035                  ......do                                               IP.
                 153.0425                 ......do                          30                   IP.
                 153.050                  ......do                          4, 7                 IP.
                 153.0575                 ......do                          4, 7, 30             IP.
                 153.065                  ......do                                               IP.

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 102 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)          Limitations         Coordinator
                 153.0725                 ......do                         30                   IP.
                 153.080                  ......do                         4, 7                 IP.
                 153.0875                 ......do                         4, 7, 30             IP.
                 153.095                  ......do                                              IP.
                 153.1025                 ......do                         30, 80               IP.
                 153.110                  ......do                         4, 7                 IP.
                 153.1175                 ......do                         4, 7, 30             IP.
                 153.125                  ......do                                              IP.
                 153.1325                 ......do                         30                   IP.
                 153.140                  ......do                         4, 7                 IP.
                 153.1475                 ......do                         4, 7, 30             IP.
                 153.155                  ......do                                              IP.
                 153.1625                 ......do                         30                   IP.
                 153.170                  ......do                         4, 7                 IP.
                 153.1775                 ......do                         4, 7, 30             IP.
                 153.185                  ......do                                              IP.
                 153.1925                 ......do                         30                   IP.
                 153.200                  ......do                         4, 7                 IP.
                 153.2075                 ......do                         4, 7, 30             IP.
                 153.215                  ......do                                              IP.
                 153.2225                 ......do                         30                   IP.
                 153.230                  ......do                         4, 7                 IP.
                 153.2375                 ......do                         4, 7, 30             IP.
                 153.245                  ......do                                              IP.
                 153.2525                 ......do                         30                   IP.
                 153.260                  ......do                         4, 7                 IP.
                 153.2675                 ......do                         4, 7, 30             IP.
                 153.275                  ......do                                              IP.
                 153.2825                 ......do                         30                   IP.
                 153.290                  ......do                         4, 7                 IP.
                 153.2975                 ......do                         4, 7, 30             IP.
                 153.305                  ......do                                              IP.
                 153.3125                 ......do                         30                   IP.
                 153.320                  ......do                         4, 7                 IP.
                 153.3275                 ......do                         4, 7, 30             IP.
                 153.335                  ......do                                              IP.
                 153.3425                 ......do                         30                   IP.
                 153.350                  ......do                         4, 7                 IP.
                 153.3575                 ......do                         4, 7, 30             IP.
                 153.365                  ......do                                              IP.

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 103 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)        Limitations         Coordinator
                 153.3725                 ......do                         30                 IP.
                 153.380                  ......do                                            IP.
                 153.3875                 ......do                         30                 IP.
                 153.395                  ......do                                            IP.
                 153.4025                 ......do                         30                 IP.
                 153.410                  ......do                                            IW.
                 153.4175                 ......do                         30                 IW
                 153.425                  ......do                         80                 IP, IW
                 153.4325                 ......do                         30, 80             IP, IW
                 153.440                  ......do                         80                 IP, IW
                 153.4475                 ......do                         30, 80             IP, IW
                 153.455                  ......do                         80                 IP, IW
                 153.4625                 ......do                         30, 80             IP, IW
                 153.470                  ......do                                            IW
                 153.4775                 ......do                         30                 IW
                 153.485                  ......do                         80                 IP, IW
                 153.4925                 ......do                         30, 80             IP, IW
                 153.500                  ......do                         80                 IP, IW
                 153.5075                 ......do                         30, 80             IP, IW
                 153.515                  ......do                         80                 IP, IW
                 153.5225                 ......do                         30, 80             IP, IW
                 153.530                  ......do                                            IW
                 153.5375                 ......do                         30                 IW
                 153.545                  ......do                         80                 IP, IW
                 153.5525                 ......do                         30, 80             IP, IW
                 153.560                                                   30, 80             IP, IW
                 153.5675                 ......do                         30, 80             IP, IW
                 153.575                  ......do                         80                 IP, IW
                 153.5825                 ......do                         30, 80             IP, IW
                 153.590                  ......do                                            IW
                 153.5975                 ......do                         30                 IW
                 153.605                  ......do                         80                 IP, IW
                 153.6125                 ......do                         30, 80             IP, IW
                 153.620                  ......do                         80                 IP, IW
                 153.6275                 ......do                         30, 80             IP, IW
                 153.635                  ......do                         80                 IP, IW
                 153.6425                 ......do                         30, 80             IP, IW
                 153.650                  ......do                                            IW
                 153.6575                 ......do                         30                 IW
                 153.665                  ......do                         80                 IP, IW

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 104 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 153.6725                 ......do                          30, 80              IP, IW
                 153.680                  ......do                          80                  IP, IW
                 153.6875                 ......do                          30, 80              IP, IW
                 153.695                  ......do                                              IW
                 153.7025                 ......do                          30                  IW
                 153.710                  ......do                                              IW
                 153.7175                 ......do                          30                  IW
                 153.725                  ......do                                              IW
                 153.7325                 ......do                          30                  IW
                 154.45625                Fixed or mobile                   39, 40, 41, 42.
                 154.46375                ......do                          39, 40, 43.
                 154.47125                ......do                          39, 40, 41, 44.
                 154.47875                ......do                          39, 40, 41, 42.
                 154.4825                 Base or mobile                    30
                 154.490                  ......do.
                 154.4975                 ......do                          30
                 154.505                  ......do                          30
                 154.515                  ......do.
                 154.5275                 Mobile                            10, 30, 34
                 154.540                  ......Base or mobile.
                 154.5475                 ......do                          30
                 154.555                  ......do                          33.
                 154.585                  Mobile                            8, 46               IP
                 154.610                  Base or mobile                    33.
                 154.625                  ......do                          36, 37, 48.
                 154.640                  Base                              36, 37, 48.
                 157.470                  Base or mobile                    12                  LA
                 157.4775                 ......do                          12, 30              LA
                 157.485                  ......do                          12                  LA
                 157.4925                 ......do                          12, 30              LA
                 157.500                  ......do                          12                  LA
                 157.5075                 ......do                          12, 30              LA
                 157.515                  ......do                          12                  LA
                 157.5225                 ......do                          12, 30              LA
                 157.530                  Mobile                            6.
                 157.5375                 ......do                          6, 30
                 157.545                  ......do                          6.
                 157.5525                 ......do                          6, 30
                 157.560                  Base or mobile                    6.
                 157.5675                 ......do                          6, 30

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 105 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations        Coordinator
                 157.575                  Mobile                           6.
                 157.5825                 ......do                         6, 30
                 157.590                  ......do                         6.
                 157.5975                 ......do                         6, 30
                 157.605                  ......do                         6.
                 157.6125                 ......do                         6, 30
                 157.620                  Base or mobile                   6.
                 157.6275                 ......do                         6, 30
                 157.635                  Mobile                           6.
                 157.6425                 ......do                         6, 30
                 157.650                  ......do                         6.
                 157.6575                 ......do                         6, 30
                 157.665                  ......do                         6.
                 157.6725                 ......do                         6, 30
                 157.680                  ......do                         6.
                 157.6875                 ......do                         6, 30
                 157.695                  ......do                         6.
                 157.7025                 ......do                         6, 30
                 157.710                  ......do                         6.
                 157.7175                 ......do                         6, 30
                 157.725                  Base or mobile                   79.
                 157.740                  ......do                         29, 36, 37, 38.
                 158.1225                 ......do                         33                  IW
                 158.130                  ......do                                             IW
                 158.1375                 ......do                         6, 30               IW
                 158.145                  ......do                                             IP, IW
                 158.1525                 ......do                         6, 30               IP, IW
                 158.160                  ......do                                             IP, IW
                 158.1675                 ......do                         6, 30               IP, IW
                 158.175                  ......do                         81                  IP, IW
                 158.1825                 ......do                         30, 81              IP, IW
                 158.190                  ......do                                             IW
                 158.1975                 ......do                         30                  IW
                 158.205                  ......do                         81                  IP, IW
                 158.2125                 ......do                         30, 81              IP, IW
                 158.220                  ......do                         81                  IP, IW
                 158.2275                 ......do                         30, 81              IP, IW
                 158.235                  ......do                         81                  IP, IW
                 158.2425                 ......do                         30, 81              IP, IW
                 158.250                  ......do                                             IW

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 106 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)          Limitations         Coordinator
                 158.2575                 ......do                          30                    IW
                 158.265                  ......do                          81                    IP, IW
                 158.2725                 ......do                          30, 81                IP, IW
                 158.280                  ......do                                                IP
                 158.2875                 ......do                          30                    IP
                 158.295                  ......do                                                IP
                 158.3025                 ......do                          30                    IP
                 158.310                  ......do                          4, 7                  IP
                 158.3175                 ......do                          4, 7, 30              IP
                 158.325                  ......do                                                IP
                 158.3325                 ......do                          30                    IP
                 158.340                  Mobile.
                 158.3475                 ......do                          30
                 158.355                  Base or mobile                                          IP
                 158.3625                 ......do                          30                    IP
                 158.370                  ......do                          4, 7                  IP
                 158.3775                 ......do                          4, 7, 30              IP
                 158.385                  ......do.
                 158.3925                 ......do                          30
                 158.400                  ......do                          17.
                 158.4075                 ......do                          17, 30
                 158.415                  ......do                                                IP
                 158.4225                 ......do                          30                    IP
                 158.430                  ......do                          4, 7                  IP
                 158.4375                 ......do                          4, 7, 30              IP
                 158.445                  Mobile                            8, 49                 IP
                 158.460                  Base or mobile                    29, 36, 37, 38, 48.
                 159.480                  ......do                          8, 82                 IP
                 159.4875                 ......do                          8, 30                 IP
                 159.495                  ......do.
                 159.5025                 ......do                          30
                 159.510                  ......do.
                 159.5175                 ......do                          30
                 159.525                  ......do.
                 159.5325                 ......do                          30
                 159.540                  ......do.
                 159.5475                 ......do                          30
                 159.555                  ......do.
                 159.5625                 ......do                          30
                 159.570                  ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                                      page 107 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)        Limitations   Coordinator
                 159.5775                 ......do                          30
                 159.585                  ......do.
                 159.5925                 ......do                          30
                 159.600                  ......do.
                 159.6075                 ......do                          30
                 159.615                  ......do.
                 159.6225                 ......do                          30
                 159.630                  ......do.
                 159.6375                 ......do                          30
                 159.645                  ......do.
                 159.6525                 ......do                          30
                 159.660                  ......do.
                 159.6675                 ......do                          30
                 159.675                  ......do.
                 159.6825                 ......do                          30
                 159.690                  ......do.
                 159.6975                 ......do                          30
                 159.705                  ......do.
                 159.7125                 ......do                          30
                 159.720                  ......do.
                 159.7275                 ......do                          30
                 159.735                  ......do.
                 159.7425                 ......do                          30
                 159.750                  ......do.
                 159.7575                 ......do                          30
                 159.765                  ......do.
                 159.7725                 ......do                          30
                 159.780                  ......do.
                 159.7875                 ......do                          30
                 159.795                  ......do.
                 159.8025                 ......do                          30
                 159.810                  ......do.
                 159.8175                 ......do                          30
                 159.825                  ......do.
                 159.8325                 ......do                          30
                 159.840                  ......do.
                 159.8475                 ......do                          30
                 159.855                  ......do.
                 159.8625                 ......do                          30
                 159.870                  ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 108 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)        Limitations   Coordinator
                 159.8775                 ......do                          30
                 159.885                  ......do.
                 159.8925                 ......do                          30
                 159.900                  ......do.
                 159.9075                 ......do                          30
                 159.915                  ......do.
                 159.9225                 ......do                          30
                 159.930                  ......do.
                 159.9375                 ......do                          30
                 159.945                  ......do.
                 159.9525                 ......do                          30
                 159.960                  ......do.
                 159.9675                 ......do                          30
                 159.975                  ......do.
                 159.9825                 ......do                          30
                 159.990                  ......do.
                 159.9975                 ......do                          30
                 160.005                  ......do.
                 160.0125                 ......do                          30
                 160.020                  ......do.
                 160.0275                 ......do                          30
                 160.035                  ......do.
                 160.0425                 ......do                          30
                 160.050                  ......do.
                 160.0575                 ......do                          30
                 160.065                  ......do.
                 160.0725                 ......do                          30
                 160.080                  ......do.
                 160.0875                 ......do                          30
                 160.095                  ......do.
                 160.1025                 ......do                          30
                 160.110                  ......do.
                 160.1175                 ......do                          30
                 160.125                  ......do.
                 160.1325                 ......do                          30
                 160.140                  ......do.
                 160.1475                 ......do                          30
                 160.155                  ......do.
                 160.1625                 ......do                          30
                 160.170                  ......do.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 109 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)        Limitations        Coordinator
                 160.1775                 ......do                          30
                 160.185                  ......do.
                 160.1925                 ......do                          30
                 160.200                  ......do.
                 160.2075                 ......do                          30
                 160.215                  ......do                          50                 LR
                 160.2225                 ......do                          30, 50             LR
                 160.230                  ......do                          50                 LR
                 160.2375                 ......do                          30, 50             LR
                 160.245                  ......do                          50                 LR
                 160.2525                 ......do                          30, 50             LR
                 160.260                  ......do                          50                 LR
                 160.2675                 ......do                          30, 50             LR
                 160.275                  ......do                          50                 LR
                 160.2825                 ......do                          30, 50             LR
                 160.290                  ......do                          50                 LR
                 160.2975                 ......do                          30, 50             LR
                 160.305                  ......do                          50                 LR
                 160.3125                 ......do                          30, 50             LR
                 160.320                  ......do                          50                 LR
                 160.3275                 ......do                          30, 50             LR
                 160.335                  ......do                          50                 LR
                 160.3425                 ......do                          30, 50             LR
                 160.350                  ......do                          50                 LR
                 160.3575                 ......do                          30, 50             LR
                 160.365                  ......do                          50                 LR
                 160.3725                 ......do                          30, 50             LR
                 160.380                  ......do                          50                 LR
                 160.3875                 ......do                          30, 50             LR
                 160.395                  ......do                          50                 LR
                 160.4025                 ......do                          30, 50             LR
                 160.410                  ......do                          50, 52             LR
                 160.4175                 ......do                          30, 50, 52         LR
                 160.425                  ......do                          50, 52             LR
                 160.4325                 ......do                          30, 50, 52         LR
                 160.440                  ......do                          50, 52             LR
                 160.4475                 ......do                          30, 50, 52         LR
                 160.455                  ......do                          50, 52             LR
                 160.4625                 ......do                          30, 50, 52         LR
                 160.470                  ......do                          50, 52             LR

47 CFR 90.35(b)(3) (enhanced display)                                                                 page 110 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)        Limitations        Coordinator
                 160.4775                 ......do                         30, 50, 52         LR
                 160.485                  ......do                         50, 52             LR
                 160.4925                 ......do                         30, 50, 52         LR
                 160.500                  ......do                         50, 52             LR
                 160.5075                 ......do                         30, 50, 52         LR
                 160.515                  ......do                         50, 52             LR
                 160.5225                 ......do                         30, 50, 52         LR
                 160.530                  ......do                         50, 52             LR
                 160.5375                 ......do                         30, 50, 52         LR
                 160.545                  ......do                         50, 52             LR
                 160.5525                 ......do                         30, 50, 52         LR
                 160.560                  ......do                         50, 52             LR
                 160.5675                 ......do                         30, 50, 52         LR
                 160.575                  ......do                         50, 52             LR
                 160.5825                 ......do                         30, 50, 52         LR
                 160.590                  ......do                         50, 52             LR
                 160.5975                 ......do                         30, 50, 52         LR
                 160.605                  ......do                         50, 52             LR
                 160.6125                 ......do                         30, 50, 52         LR
                 160.620                  ......do                         50                 LR
                 160.6275                 ......do                         30, 50             LR
                 160.635                  ......do                         50                 LR
                 160.6425                 ......do                         30, 50             LR
                 160.650                  ......do                         50                 LR
                 160.6575                 ......do                         30, 50             LR
                 160.665                  ......do                         50                 LR
                 160.6725                 ......do                         30, 50             LR
                 160.680                  ......do                         50                 LR
                 160.6875                 ......do                         30, 50             LR
                 160.695                  ......do                         50                 LR
                 160.7025                 ......do                         30, 50             LR
                 160.710                  ......do                         50                 LR
                 160.7175                 ......do                         30, 50             LR
                 160.725                  ......do                         50                 LR
                 160.7325                 ......do                         30, 50             LR
                 160.740                  ......do                         50                 LR
                 160.7475                 ......do                         30, 50             LR
                 160.755                  ......do                         50                 LR
                 160.7625                 ......do                         30, 50             LR
                 160.770                  ......do                         50                 LR

47 CFR 90.35(b)(3) (enhanced display)                                                                page 111 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)        Limitations        Coordinator
                 160.7775                 ......do                         30, 50             LR
                 160.785                  ......do                         50                 LR
                 160.7925                 ......do                         30, 50             LR
                 160.800                  ......do                         50                 LR
                 160.8075                 ......do                         30, 50             LR
                 160.815                  ......do                         50                 LR
                 160.8225                 ......do                         30, 50             LR
                 160.830                  ......do                         50                 LR
                 160.8375                 ......do                         30, 50             LR
                 160.845                  ......do                         50                 LR
                 160.8525                 ......do                         30, 50             LR
                 160.860                  ......do                         50, 51             LR
                 160.8675                 ......do                         30, 50, 51         LR
                 160.875                  ......do                         50, 51             LR
                 160.8825                 ......do                         30, 50, 51         LR
                 160.890                  ......do                         50, 51             LR
                 160.8975                 ......do                         30, 50, 51         LR
                 160.905                  ......do                         50, 51             LR
                 160.9125                 ......do                         30, 50, 51         LR
                 160.920                  ......do                         50, 51             LR
                 160.9275                 ......do                         30, 50, 51         LR
                 160.935                  ......do                         50, 51             LR
                 160.9425                 ......do                         30, 50, 51         LR
                 160.950                  ......do                         50, 51             LR
                 160.9575                 ......do                         30, 50, 51         LR
                 160.965                  ......do                         50, 51             LR
                 160.9725                 ......do                         30, 50, 51         LR
                 160.980                  ......do                         50, 51             LR
                 160.9875                 ......do                         30, 50, 51         LR
                 160.995                  ......do                         50, 51             LR
                 161.0025                 ......do                         30, 50, 51         LR
                 161.010                  ......do                         50, 51             LR
                 161.0175                 ......do                         30, 50, 51         LR
                 161.025                  ......do                         50, 51             LR
                 161.0325                 ......do                         30, 50, 51         LR
                 161.040                  ......do                         50, 51             LR
                 161.0475                 ......do                         30, 50, 51         LR
                 161.055                  ......do                         50, 51             LR
                 161.0625                 ......do                         30, 50, 51         LR
                 161.070                  ......do                         50, 51             LR

47 CFR 90.35(b)(3) (enhanced display)                                                                page 112 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)       Limitations        Coordinator
                 161.0775                 ......do                         30, 50, 51        LR
                 161.085                  ......do                         50, 51            LR
                 161.0925                 ......do                         30, 50, 51        LR
                 161.100                  ......do                         50, 51            LR
                 161.1075                 ......do                         30, 50, 51        LR
                 161.115                  ......do                         50, 51            LR
                 161.1225                 ......do                         30, 50, 51        LR
                 161.130                  ......do                         50, 51            LR
                 161.1375                 ......do                         30, 50, 51        LR
                 161.145                  ......do                         50, 51            LR
                 161.1525                 ......do                         30, 50, 51        LR
                 161.160                  ......do                         50, 51            LR
                 161.1675                 ......do                         30, 50, 51        LR
                 161.175                  ......do                         50, 51            LR
                 161.1825                 ......do                         30, 50, 51        LR
                 161.190                  ......do                         50, 51            LR
                 161.1975                 ......do                         30, 50, 51        LR
                 161.205                  ......do                         50, 51            LR
                 161.2125                 ......do                         30, 50, 51        LR
                 161.220                  ......do                         50, 51            LR
                 161.2275                 ......do                         30, 50, 51        LR
                 161.235                  ......do                         50, 51            LR
                 161.2425                 ......do                         30, 50, 51        LR
                 161.250                  ......do                         50, 51            LR
                 161.2575                 ......do                         30, 50, 51        LR
                 161.265                  ......do                         50, 51            LR
                 161.2725                 ......do                         30, 50, 51        LR
                 161.280                  ......do                         50, 51            LR
                 161.2875                 ......do                         30, 50, 51        LR
                 161.295                  ......do                         50, 51            LR
                 161.3025                 ......do                         30, 50, 51        LR
                 161.310                  ......do                         50, 51            LR
                 161.3175                 ......do                         30, 50, 51        LR
                 161.325                  ......do                         50, 51            LR
                 161.3325                 ......do                         30, 50, 51        LR
                 161.340                  ......do                         50, 51            LR
                 161.3475                 ......do                         30, 50, 51        LR
                 161.355                  ......do                         50, 51            LR
                 161.3625                 ......do                         30, 50, 51        LR
                 161.370                  ......do                         50, 51            LR

47 CFR 90.35(b)(3) (enhanced display)                                                               page 113 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations        Coordinator
                 161.3775                 ......do                         30, 50, 51          LR
                 161.385                  ......do                         50, 52              LR
                 161.3925                 ......do                         30, 50, 52          LR
                 161.400                  ......do                         50, 52              LR
                 161.4075                 ......do                         30, 50, 52          LR
                 161.415                  ......do                         50, 52              LR
                 161.4225                 ......do                         30, 50, 52          LR
                 161.430                  ......do                         50, 52              LR
                 161.4375                 ......do                         30, 50, 52          LR
                 161.445                  ......do                         50, 52              LR
                 161.4525                 ......do                         30, 50, 52          LR
                 161.460                  ......do                         50, 52              LR
                 161.4675                 ......do                         30, 50, 52          LR
                 161.475                  ......do                         50, 52              LR
                 161.4825                 ......do                         30, 50, 52          LR
                 161.490                  ......do                         50, 52              LR
                 161.4975                 ......do                         30, 50, 52          LR
                 161.505                  ......do                         50, 52              LR
                 161.5125                 ......do                         30, 50, 52          LR
                 161.520                  ......do                         50, 52              LR
                 161.5275                 ......do                         30, 50, 52          LR
                 161.535                  ......do                         50, 52              LR
                 161.5425                 ......do                         30, 50, 52          LR
                 161.550                  ......do                         50, 52              LR
                 161.5575                 ......do                         30, 50, 52          LR
                 161.565                  ......do                         50, 52              LR
                 161.610                  ......do                         78                  LR
                 169 to 172               Mobile, operational fixed        53.
                 173.20375                Fixed or mobile                  39, 40, 41, 44.
                 173.210                  ......do                         40, 41, 44, 54.
                 173.225                  Base or mobile.
                 173.2375                 Fixed or mobile                  92, 93, 94, 95
                 173.250                  Base or mobile                                       IP, IW
                 173.2625                 Fixed or mobile                  92, 93, 94, 95
                 173.275                  Base or mobile.
                 173.2875                 Fixed or mobile                  92, 93, 94, 95
                 173.300                  Base or mobile                                       IP, IW
                 173.3125                 Fixed or mobile                  92, 93, 94, 95
                 173.325                  Base or mobile.
                 173.3375                 Fixed or mobile                  92, 93, 94, 95

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 114 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)            Limitations        Coordinator
                 173.350                  Base or mobile
                 173.3625                 Fixed or mobile                      92, 93, 94, 95
                 173.375                  Base or mobile.
                 173.390                  Fixed or mobile                      40, 41, 44, 54.
                 173.39625                ......do                             39, 40, 41, 44.
                 216 to 217               Base or mobile                       55
                 217 to 220               Base, mobile, or operational fixed   55
                 220 to 222               Base or mobile
                 406 to 416               Operational fixed                    53
                 450 to 470               Fixed, base, or mobile               27, 57
                 451.00625                Base or mobile                       33
                 451.0125                 ......do                             33
                 451.01875                ......do                             33                 IW.
                 451.025                  ......do                                                IW
                 451.03125                ......do                             33                 IW
                 451.0375                 ......do                             30                 IW
                 451.04375                ......do                             33                 IW
                 451.050                  ......do                                                IW
                 451.05625                ......do                             33                 IW
                 451.0625                 ......do                             30                 IW
                 451.06875                ......do                             33                 IW
                 451.075                  ......do                                                IW
                 451.08125                ......do                             33                 IW
                 451.0875                 ......do                             30                 IW
                 451.09375                ......do                             33                 IW
                 451.100                  ......do                                                IW
                 451.10625                ......do                             33                 IW
                 451.1125                 ......do                             30                 IW
                 451.11875                ......do                             33                 IW
                 451.125                  ......do                                                IW
                 451.13125                ......do                             33                 IW
                 451.1375                 ......do                             30                 IW
                 451.14375                ......do                             33                 IW
                 451.150                  ......do                                                IW
                 451.15625                ......do                             33                 IW
                 451.1625                 ......do                             30                 IW
                 451.16875                ......do                             33                 IW
                 451.175                  do                                                      IP, IW
                 451.18125                ......do                             33, 84.
                 451.1875                 ......do                             30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                      page 115 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)        Limitations        Coordinator
                 451.19375                ......do                          33, 84.
                 451.200                  ......do                                             IW
                 451.20625                ......do                          33                 IW
                 451.2125                 ......do                          30                 IW
                 451.21875                ......do                          33                 IW
                 451.225                  do                                                   IP, IW
                 451.23125                ......do                          33, 84.
                 451.2375                 ......do                          30, 84.
                 451.24375                ......do                          33, 84.
                 451.250                  ......do                                             IW
                 451.25625                ......do                          33                 IW
                 451.2625                 ......do                          30                 IW
                 451.26875                ......do                          33                 IW
                 451.275                  ......do                                             IP, IW
                 451.28125                ......do                          33, 84.
                 451.2875                 ......do                          30, 84.
                 451.29375                ......do                          33, 84.
                 451.300                  ......do.
                 451.30625                ......do                          33, 84.
                 451.3125                 ......do                          30, 84.
                 451.31875                ......do                          33, 84.
                 451.325                  ......do.
                 451.33125                ......do                          33, 84.
                 451.3375                 ......do                          30, 84.
                 451.34375                ......do                          33, 84.
                 451.350                  ......do.
                 451.35625                ......do                          33, 84.
                 451.3625                 ......do                          30, 84.
                 451.36875                ......do                          33, 84.
                 451.375                  ......do                                             IP, IW
                 451.38125                ......do                          33, 84.
                 451.3875                 ......do                          30, 84.
                 451.39375                ......do                          33, 84.
                 451.400                  ......do.
                 451.40625                ......do                          33, 84.
                 451.4125                 ......do                          30, 84.
                 451.41875                ......do                          33, 84.
                 451.425                  ......do                                             IP, IW
                 451.43125                ......do                          33, 84.
                 451.4375                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 116 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)          Limitations        Coordinator
                 451.44375                ......do                          33, 84.
                 451.450                  ......do.
                 451.45625                ......do                          33, 84.
                 451.4625                 ......do                          30, 84.
                 451.46875                ......do                          33, 84.
                 451.475                  ......do                                               IP, IW
                 451.48125                ......do                          33, 84.
                 451.4875                 ......do                          30, 84.
                 451.49375                ......do                          33, 84.
                 451.500                  ......do.
                 451.50625                ......do                          33, 84.
                 451.5125                 ......do                          30, 84.
                 451.51875                ......do                          33, 84.
                 451.525                  ......do                                               IP, IW
                 451.53125                ......do                          33, 84.
                 451.5375                 ......do                          30, 84.
                 451.54375                ......do                          33, 84.
                 451.550                  ......do                          4, 7                 IP
                 451.55625                ......do                          4, 7, 33, 84.
                 451.5625                 ......do                          4, 7, 30, 84.
                 451.56875                ......do                          4, 7, 33, 84.
                 451.575                  ......do                                               IP, IW
                 451.58125                ......do                          33, 84.
                 451.5875                 ......do                          30, 84.
                 451.59375                ......do                          33, 84.
                 451.600                  ......do                          4, 7                 IP
                 451.60625                ......do                          4, 7, 33, 84.
                 451.6125                 ......do                          4, 7, 30, 84.
                 451.61875                ......do                          4, 7, 33, 84.
                 451.625                  ......do                                               IP, IW
                 451.63125                ......do                          33, 84.
                 451.6375                 ......do                          30, 84.
                 451.64375                ......do                          33, 84.
                 451.650                  ......do                          4, 7                 IP
                 451.65625                ......do                          4, 7, 33, 84.
                 451.6625                 ......do                          4, 7, 30, 84.
                 451.66875                ......do                          4, 7, 33, 84.
                 451.675                  ......do                                               IP, IW
                 451.68125                ......do                          33, 84.
                 451.6875                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                     page 117 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)             Limitations        Coordinator
                 451.69375                ......do                             33, 84.
                 451.700                  ......do                             4, 7                 IP
                 451.70625                ......do                             4, 7, 33, 84.
                 451.7125                 ......do                             4, 7, 30, 84.
                 451.71875                ......do                             4, 7, 33, 84.
                 451.725                  ......do.
                 451.73125                ......do                             33, 84.
                 451.7375                 ......do                             30, 84.
                 451.74375                ......do                             33, 84.
                 451.750                  ......do                             4, 7                 IP
                 451.75625                ......do                             4, 7, 33, 84.
                 451.7625                 ......do                             4, 7, 30, 84.
                 451.76875                ......do                             4, 7, 33, 84.
                 451.775                  ......do.
                 451.78125                ......do                             33.
                 451.7875                 ......do                             30.
                 451.79375                ......do                             33.
                 451.800                  Base, mobile, or operational fixed   17, 58.
                 451.80625                ......do                             17, 33, 58.
                 451.8125                 ......do                             17, 30, 58.
                 451.81875                ......do                             17, 33, 58.
                 451.825                  Base or mobile.
                 451.83125                ......do                             33.
                 451.8375                 ......do                             30.
                 451.84375                ......do                             33.
                 451.850                  ......do.
                 451.85625                ......do                             33.
                 451.8625                 ......do                             30.
                 451.86875                ......do                             33.
                 451.875                  ......do.
                 451.88125                ......do                             33.
                 451.8875                 ......do                             30.
                 451.89375                ......do                             33.
                 451.900                  ......do.
                 451.90625                ......do                             33.
                 451.9125                 ......do                             30.
                 451.91875                ......do                             33.
                 451.925                  ......do.
                 451.93125                ......do                             33.
                 451.9375                 ......do                             30.

47 CFR 90.35(b)(3) (enhanced display)                                                                       page 118 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 451.94375                ......do                          33.
                 451.950                  ......do.
                 451.95625                ......do                          33.
                 451.9625                 ......do                          30.
                 451.96875                ......do                          33.
                 451.975                  ......do.
                 451.98125                ......do                          33.
                 451.9875                 ......do                          30.
                 451.99375                ......do                          33.
                 452.000                  ......do.
                 452.00625                ......do                          33.
                 452.0125                 ......do                          30.
                 452.01875                ......do                          33.
                 452.025                  ......do.
                 452.03125                ......do                          33, 84.
                 452.0375                 ......do                          30, 84.
                 452.04375                ......do                          33, 84.
                 452.050                  ......do.
                 452.05625                ......do                          33, 84.
                 452.0625                 ......do                          30, 84.
                 452.06875                ......do                          33, 84.
                 452.075                  ......do.
                 452.08125                ......do                          33, 84.
                 452.0875                 ......do                          30, 84.
                 452.09375                ......do                          33, 84.
                 452.100                  ......do.
                 452.10625                ......do                          33, 84.
                 452.1125                 ......do                          30, 84.
                 452.11875                ......do                          33, 84.
                 452.125                  ......do.
                 452.13125                ......do                          33, 84.
                 452.1375                 ......do                          30, 84.
                 452.14375                ......do                          33, 84.
                 452.150                  ......do.
                 452.15625                ......do                          33, 84.
                 452.1625                 ......do                          30, 84.
                 452.16875                ......do                          33, 84.
                 452.175                  ......do.
                 452.18125                ......do                          33, 84.
                 452.1875                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 119 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 452.19375                ......do                          33, 84.
                 452.200                  ......do.
                 452.20625                ......do                          33.
                 452.2125                 ......do                          30.
                 452.21875                ......do                          33.
                 452.225                  ......do
                 452.23125                ......do                          33.
                 452.2375                 ......do                          30.
                 452.24375                ......do                          33.
                 452.250                  ......do.
                 452.25625                ......do                          33.
                 452.2625                 ......do                          30.
                 452.26875                ......do                          33.
                 452.275                  ......do.
                 452.28125                ......do                          33, 84.
                 452.2875                 ......do                          30, 84.
                 452.29375                ......do                          33, 84.
                 452.300                  ......do.
                 452.30625                ......do                          33, 84.
                 452.3125                 ......do                          30, 84.
                 452.31875                ......do                          33, 84.
                 452.325                  ......do                                              LR
                 452.33125                ......do                          33.
                 452.3375                 ......do                          30.
                 452.34375                ......do                          33.
                 452.350                  ......do.
                 452.35625                ......do                          33.
                 452.3625                 ......do                          30.
                 452.36875                ......do                          33.
                 452.375                  ......do                                              LR
                 452.38125                ......do                          33.
                 452.3875                 ......do                          30.
                 452.39375                ......do                          33.
                 452.400                  ......do.
                 452.40625                ......do                          33, 84.
                 452.4125                 ......do                          30, 84.
                 452.41875                ......do                          33, 84.
                 452.425                  do                                                    LR
                 452.43125                ......do                          33.
                 452.4375                 ......do                          30.

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 120 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 452.44375                ......do                          33.
                 452.450                  ......do.
                 452.45625                ......do                          33.
                 452.4625                 ......do                          30.
                 452.46875                ......do                          33.
                 452.475                  ......do                                              LR
                 452.48125                ......do                          33, 84.
                 452.4875                 ......do                          30, 84.
                 452.49375                ......do                          33, 84.
                 452.500                  ......do.
                 452.50625                ......do                          33, 84.
                 452.5125                 ......do                          30, 84.
                 452.51875                ......do                          33, 84.
                 452.525                  ......do                                              LA
                 452.53125                ......do                          33, 84              LA
                 452.5375                 ......do                          30, 84              LA
                 452.54375                ......do                          33, 84              LA
                 452.550                  ......do                                              LA
                 452.55625                ......do                          33                  LA
                 452.5625                 ......do                          30                  LA
                 452.56875                ......do                          33                  LA
                 452.575                  ......do                                              LA
                 452.58125                ......do                          33                  LA
                 452.5875                 ......do                          30                  LA
                 452.59375                ......do                          33                  LA
                 452.600                  ......do                                              LA
                 452.60625                ......do                          33                  LA
                 452.6125                 ......do                          30                  LA
                 452.61875                ......do                          33                  LA
                 452.625                  ......do.
                 452.63125                ......do                          33, 84.
                 452.6375                 ......do                          30, 84.
                 452.64375                ......do                          33, 84.
                 452.650                  ......do.
                 452.65625                ......do                          33, 84.
                 452.6625                 ......do                          30, 84.
                 452.66875                ......do                          33, 84.
                 452.675                  ......do.
                 452.68125                ......do                          33, 84.
                 452.6875                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 121 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 452.69375                ......do                          33, 84.
                 452.700                  ......do.
                 452.70625                ......do                          33, 84.
                 452.7125                 ......do                          30, 84.
                 452.71875                ......do                          33, 84.
                 452.725                  ......do.
                 452.73125                ......do                          33.
                 452.7375                 ......do                          30.
                 452.74375                ......do                          33.
                 452.750                  ......do.
                 452.75625                ......do                          33, 84.
                 452.7625                 ......do                          30, 84.
                 452.76875                ......do                          33, 84.
                 452.775                  ......do                                              LR
                 452.78125                ......do                          33, 84.
                 452.7875                 ......do                          30, 84.
                 452.79375                ......do                          33, 84.
                 452.800                  ......do.
                 452.80625                ......do                          33, 84.
                 452.8125                 ......do                          30, 84.
                 452.81875                ......do                          33, 84.
                 452.825                  ......do                                              LR
                 452.83125                ......do                          33, 84.
                 452.8375                 ......do                          30, 84.
                 452.84375                ......do                          33, 84.
                 452.850                  ......do.
                 452.85625                ......do                          33, 84.
                 452.8625                 ......do                          30, 84.
                 452.86875                ......do                          33, 84.
                 452.875                  ......do                                              LR
                 452.88125                ......do                          33, 84.
                 452.8875                 ......do                          30, 84.
                 452.89375                ......do                          33, 84.
                 452.900                  ......do                                              LR
                 452.90625                ......do                          33                  LR
                 452.9125                 ......do                          30                  LR
                 452.91875                ......do                          33                  LR
                 452.925                  ......do                          59                  LR
                 452.93125                ......do                          33, 59              LR
                 452.9375                 ......do                          30, 59              LR

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 122 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations         Coordinator
                 452.94375                ......do                          33, 59              LR
                 452.950                  ......do                          59                  LR
                 452.95625                ......do                          33, 59              LR
                 452.9625                 ......do                          30, 59              LR
                 452.96875                ......do                          33, 59              LR
                 452.975                  ......do.
                 452.98125                ......do                          33, 84.
                 452.9875                 ......do                          30, 84.
                 452.99375                ......do                          33, 84.
                 453.000                  ......do.
                 453.00625                ......do                          33.
                 453.0125                 ......do                          30.
                 453.01875                ......do                          33.
                 454.000                  ......do                          8                   IP.
                 456.00625                ......do                          33
                 456.0125                 ......do                          33
                 456.01875                ......do                          33                  IW.
                 456.025                  Mobile                                                IW
                 456.03125                ......do                          33                  IW
                 456.0375                 ......do                          30                  IW
                 456.04375                ......do                          33                  IW
                 456.050                  ......do                                              IW
                 456.05625                ......do                          33                  IW
                 456.0625                 ......do                          30                  IW
                 456.06875                ......do                          33                  IW
                 456.075                  ......do                                              IW
                 456.08125                ......do                          33                  IW
                 456.0875                 ......do                          30                  IW
                 456.09375                ......do                          33                  IW
                 456.100                  ......do                                              IW
                 456.10625                ......do                          33                  IW
                 456.1125                 ......do                          30                  IW
                 456.11875                ......do                          33                  IW
                 456.125                  ......do                                              IW
                 456.13125                ......do                          33                  IW
                 456.1375                 ......do                          30                  IW
                 456.14375                ......do                          33                  IW
                 456.150                  ......do                                              IW
                 456.15625                ......do                          33                  IW
                 456.1625                 ......do                          30                  IW

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 123 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)        Limitations        Coordinator
                 456.16875                ......do                          33                 IW
                 456.175                  ......do                                             IP, IW
                 456.18125                ......do                          33, 84.
                 456.1875                 ......do                          30, 84.
                 456.19375                ......do                          33, 84.
                 456.200                  ......do                                             IW
                 456.20625                ......do                          33                 IW
                 456.2125                 ......do                          30                 IW
                 456.21875                ......do                          33                 IW
                 456.225                  ......do                                             IP, IW
                 456.23125                ......do                          33, 84.
                 456.2375                 ......do                          30, 84.
                 456.24375                ......do                          33, 84.
                 456.250                  ......do                                             IW
                 456.25625                ......do                          33                 IW
                 456.2625                 ......do                          30                 IW
                 456.26875                ......do                          33                 IW
                 456.275                  ......do                                             IP, IW
                 456.28125                ......do                          33, 84.
                 456.2875                 ......do                          30, 84.
                 456.29375                ......do                          33, 84.
                 456.300                  ......do.
                 456.30625                ......do                          33, 84.
                 456.3125                 ......do                          30, 84.
                 456.31875                ......do                          33, 84.
                 456.325                  ......do.
                 456.33125                ......do                          33, 84.
                 456.3375                 ......do                          30, 84.
                 456.34375                ......do                          33, 84.
                 456.350                  ......do.
                 456.35625                ......do                          33, 84.
                 456.3625                 ......do                          30, 84.
                 456.36875                ......do                          33, 84.
                 456.375                  ......do                                             IP, IW
                 456.38125                ......do                          33, 84.
                 456.3875                 ......do                          30, 84.
                 456.39375                ......do                          33, 84.
                 456.400                  ......do.
                 456.40625                ......do                          33, 84.
                 456.4125                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 124 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)       Limitations        Coordinator
                 456.41875                ......do                          33, 84.
                 456.425                  ......do                                            IP, IW
                 456.43125                ......do                          33, 84.
                 456.4375                 ......do                          30, 84.
                 456.44375                ......do                          33, 84.
                 456.450                  ......do.
                 456.45625                ......do                          33, 84.
                 456.4625                 ......do                          30, 84.
                 456.46875                ......do                          33, 84.
                 456.475                  ......do                                            IP, IW
                 456.48125                ......do                          33, 84.
                 456.4875                 ......do                          30, 84.
                 456.49375                ......do                          33, 84.
                 456.500                  ......do.
                 456.50625                ......do                          33, 84.
                 456.5125                 ......do                          30, 84.
                 456.51875                ......do                          33, 84.
                 456.525                  ......do                                            IP, IW
                 456.53125                ......do                          33, 84.
                 456.5375                 ......do                          30, 84.
                 456.54375                ......do                          33, 84.
                 456.550                  ......do                                            IP
                 456.55625                ......do                          33, 84.
                 456.5625                 ......do                          30, 84.
                 456.56875                ......do                          33, 84.
                 456.575                  ......do                                            IP, IW
                 456.58125                ......do                          33, 84.
                 456.5875                 ......do                          30, 84.
                 456.59375                ......do                          33, 84.
                 456.600                  ......do                                            IP
                 456.60625                ......do                          33, 84.
                 456.6125                 ......do                          30, 84.
                 456.61875                ......do                          33, 84.
                 456.625                  ......do                                            IP, IW
                 456.63125                ......do                          33, 84.
                 456.6375                 ......do                          30, 84.
                 456.64375                ......do                          33, 84.
                 456.650                  ......do                                            IP
                 456.65625                ......do                          33, 84.
                 456.6625                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 125 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)            Limitations        Coordinator
                 456.66875                ......do                             33, 84.
                 456.675                  ......do                                                 IP, IW
                 456.68125                ......do                             33, 84.
                 456.6875                 ......do                             30, 84.
                 456.69375                ......do                             33, 84.
                 456.700                  ......do                                                 IP
                 456.70625                ......do                             33, 84.
                 456.7125                 ......do                             30, 84.
                 456.71875                ......do                             33, 84.
                 456.725                  ......do.
                 456.73125                ......do                             33, 84.
                 456.7375                 ......do                             30, 84.
                 456.74375                ......do                             33, 84.
                 456.750                  ......do                                                 IP
                 456.75625                ......do                             33, 84.
                 456.7625                 ......do                             30, 84.
                 456.76875                ......do                             33, 84.
                 456.775                  ......do.
                 456.78125                ......do                             33.
                 456.7875                 ......do                             30.
                 456.79375                ......do                             33.
                 456.800                  Base, mobile, or operational fixed   17, 58.
                 456.80625                ......do                             17, 33, 58.
                 456.8125                 ......do                             17, 30, 58.
                 456.81875                ......do                             17, 33, 58.
                 456.825                  Mobile.
                 456.83125                ......do                             33.
                 456.8375                 ......do                             30.
                 456.84375                ......do                             33.
                 456.850                  ......do.
                 456.85625                ......do                             33.
                 456.8625                 ......do                             30.
                 456.86875                ......do                             33.
                 456.875                  ......do.
                 456.88125                ......do                             33.
                 456.8875                 ......do                             30.
                 456.89375                ......do                             33.
                 456.900                  ......do.
                 456.90625                ......do                             33.
                 456.9125                 ......do                             30.

47 CFR 90.35(b)(3) (enhanced display)                                                                       page 126 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 456.91875                ......do                          33.
                 456.925                  ......do.
                 456.93125                ......do                          33.
                 456.9375                 ......do                          30.
                 456.94375                ......do                          33.
                 456.950                  ......do.
                 456.95625                ......do                          33.
                 456.9625                 ......do                          30.
                 456.96875                ......do                          33.
                 456.975                  ......do.
                 456.98125                ......do                          33.
                 456.9875                 ......do                          30.
                 456.99375                ......do                          33.
                 457.000                  ......do.
                 457.00625                ......do                          33.
                 457.0125                 ......do                          30.
                 457.01875                ......do                          33.
                 457.025                  ......do.
                 457.03125                ......do                          33, 84.
                 457.0375                 ......do                          30, 84.
                 457.04375                ......do                          33, 84.
                 457.050                  ......do.
                 457.05625                ......do                          33, 84.
                 457.0625                 ......do                          30, 84.
                 457.06875                ......do                          33, 84.
                 457.075                  ......do.
                 457.08125                ......do                          33, 84.
                 457.0875                 ......do                          30, 84.
                 457.09375                ......do                          33, 84.
                 457.100                  ......do.
                 457.10625                ......do                          33, 84.
                 457.1125                 ......do                          30, 84.
                 457.11875                ......do                          33, 84.
                 457.125                  ......do.
                 457.13125                ......do                          33, 84.
                 457.1375                 ......do                          30, 84.
                 457.14375                ......do                          33, 84.
                 457.150                  ......do.
                 457.15625                ......do                          33, 84.
                 457.1625                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 127 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 457.16875                ......do                          33, 84.
                 457.175                  ......do.
                 457.18125                ......do                          33, 84.
                 457.1875                 ......do                          30, 84.
                 457.19375                ......do                          33, 84.
                 457.200                  ......do.
                 457.20625                ......do                          33.
                 457.2125                 ......do                          30.
                 457.21875                ......do                          33.
                 457.225                  ......do.
                 457.23125                ......do                          33.
                 457.2375                 ......do                          30.
                 457.24375                ......do                          33.
                 457.250                  ......do.
                 457.25625                ......do                          33.
                 457.2625                 ......do                          30.
                 457.26875                ......do                          33.
                 457.275                  ......do.
                 457.28125                ......do                          33, 84.
                 457.2875                 ......do                          30, 84.
                 457.29375                ......do                          33, 84.
                 457.300                  ......do.
                 457.30625                ......do                          33, 84.
                 457.3125                 ......do                          30, 84.
                 457.31875                ......do                          33, 84.
                 457.325                  ......do                                              LR
                 457.33125                ......do                          33.
                 457.3375                 ......do                          30.
                 457.34375                ......do                          33.
                 457.350                  ......do.
                 457.35625                ......do                          33.
                 457.3625                 ......do                          30.
                 457.36875                ......do                          33.
                 457.375                  ......do                                              LR
                 457.38125                ......do                          33.
                 457.3875                 ......do                          30.
                 457.39375                ......do                          33.
                 457.400                  ......do.
                 457.40625                ......do                          33, 84.
                 457.4125                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 128 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations          Coordinator
                 457.41875                ......do                          33, 84.
                 457.425                  ......do                                                LR
                 457.43125                ......do                          33.
                 457.4375                 ......do                          30.
                 457.44375                ......do                          33.
                 457.450                  ......do.
                 457.45625                ......do                          33.
                 457.4625                 ......do                          30.
                 457.46875                ......do                          33.
                 457.475                  ......do                                                LR
                 457.48125                ......do                          33, 84.
                 457.4875                 ......do                          30, 84.
                 457.49375                ......do                          33, 84.
                 457.500                  ......do.
                 457.50625                ......do                          33, 84.
                 457.5125                 ......do                          30, 84.
                 457.51875                ......do                          33, 84.
                 457.525                  ......do                          12, 47, 60.
                 457.53125                ......do                          11, 12, 33, 47, 60.
                 457.5375                 ......do                          11, 12, 30, 47, 60.
                 457.54375                ......do                          11, 12, 33, 47, 60.
                 457.550                  ......do                          12, 47, 60.
                 457.55625                ......do                          11, 12, 33, 47, 60.
                 457.5625                 ......do                          12, 30, 47, 60.
                 457.56875                ......do                          11, 12, 33, 47, 60.
                 457.575                  ......do                          12, 47, 60.
                 457.58125                ......do                          11, 12, 33, 47, 60.
                 457.5875                 ......do                          12, 30, 47, 60.
                 457.59375                ......do                          11, 12, 33, 47, 60.
                 457.600                  ......do                          12, 47, 60.
                 457.60625                ......do                          11, 12, 33, 47, 60.
                 457.6125                 ......do                          12, 30, 47, 60.
                 457.61875                ......do                          11, 12, 33, 47, 60.
                 457.625                  ......do.
                 457.63125                ......do                          33, 84.
                 457.6375                 ......do                          30, 84.
                 457.64375                ......do                          33, 84.
                 457.650                  ......do.
                 457.65625                ......do                          33, 84.
                 457.6625                 ......do                          30, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 129 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 457.66875                ......do                          33, 84.
                 457.675                  ......do.
                 457.68125                ......do                          33, 84.
                 457.6875                 ......do                          30, 84.
                 457.69375                ......do                          33, 84.
                 457.700                  ......do.
                 457.70625                ......do                          33, 84.
                 457.7125                 ......do                          30, 84.
                 457.71875                ......do                          33, 84.
                 457.725                  ......do.
                 457.73125                ......do                          33.
                 457.7375                 ......do                          30.
                 457.74375                ......do                          33.
                 457.750                  ......do.
                 457.75625                ......do                          33.
                 457.7625                 ......do                          30.
                 457.76875                ......do                          33.
                 457.775                  ......do                                              LR
                 457.78125                ......do                          33, 84.
                 457.7875                 ......do                          30, 84.
                 457.79375                ......do                          33, 84.
                 457.800                  ......do.
                 457.80625                ......do                          33, 84.
                 457.8125                 ......do                          30, 84.
                 457.81875                ......do                          33, 84.
                 457.825                  ......do                                              LR
                 457.83125                ......do                          33, 84.
                 457.8375                 ......do                          30, 84.
                 457.84375                ......do                          33, 84.
                 457.850                  ......do.
                 457.85625                ......do                          33, 84.
                 457.8625                 ......do                          30, 84.
                 457.86875                ......do                          33, 84.
                 457.875                  ......do                                              LR
                 457.88125                ......do                          33, 84.
                 457.8875                 ......do                          30, 84.
                 457.89375                ......do                          33, 84.
                 457.900                  ......do                                              LR
                 457.90625                ......do                          33                  LR
                 457.9125                 ......do                          30                  LR

47 CFR 90.35(b)(3) (enhanced display)                                                                  page 130 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 457.91875                ......do                          33                  LR
                 457.925                  ......do                          59                  LR
                 457.93125                ......do                          33, 59              LR
                 457.9375                 ......do                          30, 59              LR
                 457.94375                ......do                          33, 59              LR
                 457.950                  ......do                          59                  LR
                 457.95625                ......do                          33, 59              LR
                 457.9625                 ......do                          30, 59              LR
                 457.96875                ......do                          33, 59              LR
                 457.975                  ......do.
                 457.98125                ......do                          33, 84.
                 457.9875                 ......do                          30, 84.
                 457.99375                ......do                          33, 84.
                 458.000                  ......do.
                 458.00625                ......do                          33.
                 458.0125                 ......do                          30.
                 458.01875                ......do                          33.
                 459.000                  Base or mobile                    8                   IP
                 460.650                  ......do                          61, 62
                 460.65625                ......do                          33, 61, 62
                 460.6625                 ......do                          30, 61, 62, 69
                 460.66875                ......do                          33, 61, 62
                 460.675                  ......do                          61, 62
                 460.68125                ......do                          33, 61, 62
                 460.6875                 ......do                          30, 61, 62, 69
                 460.69375                ......do                          33, 61, 62
                 460.700                  ......do                          61, 62
                 460.70625                ......do                          33, 61, 62
                 460.7125                 ......do                          30, 61, 62, 69
                 460.71875                ......do                          33, 61, 62
                 460.725                  ......do                          61, 62
                 460.73125                ......do                          33, 61, 62
                 460.7375                 ......do                          30, 61, 62, 69
                 460.74375                ......do                          33, 61, 62
                 460.750                  ......do                          61, 62
                 460.75625                ......do                          33, 61, 62
                 460.7625                 ......do                          30, 61, 62, 69
                 460.76875                ......do                          33, 61, 62
                 460.775                  ......do                          61, 62
                 460.78125                ......do                          33, 61, 62

47 CFR 90.35(b)(3) (enhanced display)                                                                   page 131 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 460.7875                 ......do                         30, 61, 62, 69
                 460.79375                ......do                         33, 61, 62
                 460.800                  ......do                         61, 62
                 460.80625                ......do                         33, 61, 62
                 460.8125                 ......do                         30, 61, 62, 69
                 460.81875                ......do                         33, 61, 62
                 460.825                  ......do                         61, 62
                 460.83125                ......do                         33, 61, 62
                 460.8375                 ......do                         30, 61, 62, 69
                 460.84375                ......do                         33, 61, 62
                 460.850                  ......do                         61, 62
                 460.85625                ......do                         33, 61, 62
                 460.8625                 ......do                         30, 61, 62, 69
                 460.86875                ......do                         33, 61, 62
                 460.875                  ......do                         61, 62
                 460.88125                ......do                         33, 61, 62
                 460.8875                 ......do                         30, 61, 62, 69
                 460.89375                ......do                         33, 61, 62
                 460.900                  ......do                         63, 64, 65.
                 460.90625                ......do                         33, 63, 65, 87.
                 460.9125                 ......do                         63, 65, 83 87.
                 460.91875                ......do                         33, 63, 65, 87.
                 460.925                  ......do                         63, 64, 65.
                 460.93125                ......do                         33, 63, 65, 87.
                 460.9375                 ......do                         63, 65, 83, 87.
                 460.94375                ......do                         33, 63, 65, 87.
                 460.950                  ......do                         63, 64, 65.
                 460.95625                ......do                         33, 63, 65, 87.
                 460.9625                 ......do                         63, 65, 83, 87.
                 460.96875                ......do                         33, 63, 65, 87.
                 460.975                  ......do                         64, 65, 66
                 460.98125                ......do                         33, 65, 66, 87.
                 460.9875                 ......do                         65, 66, 83, 87.
                 460.99375                ......do                         33, 65, 66, 87.
                 461.000                  ......do                         64, 65, 66.
                 461.00625                ......do                         33, 65, 66, 87.
                 461.0125                 ......do                         65, 66, 83, 87.
                 461.01875                ......do                         33, 65, 66, 87.
                 461.025                  ......do                         62.
                 461.03125                ......do                         33, 86.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 132 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)           Limitations   Coordinator
                 461.0375                 ......do                         83, 86.
                 461.04375                ......do                         33, 86.
                 461.050                  ......do                         62.
                 461.05625                ......do                         33, 86.
                 461.0625                 ......do                         83, 86.
                 461.06875                ......do                         33, 86.
                 461.075                  ......do                         62.
                 461.08125                ......do                         33, 86.
                 461.0875                 ......do                         83, 86.
                 461.09375                ......do                         33, 86.
                 461.100                  ......do                         62.
                 461.10625                ......do                         33, 86.
                 461.1125                 ......do                         83, 86.
                 461.11875                ......do                         33, 86.
                 461.125                  ......do                         62.
                 461.13125                ......do                         33, 86.
                 461.1375                 ......do                         83, 86.
                 461.14375                ......do                         33, 86.
                 461.150                  ......do                         62.
                 461.15625                ......do                         33, .
                 461.1625                 ......do                         83, 86.
                 461.16875                ......do                         33, 86.
                 461.175                  ......do                         62.
                 461.18125                ......do                         33, 86.
                 461.1875                 ......do                         83, 86.
                 461.19375                ......do                         33, 86.
                 461.200                  ......do                         62.
                 461.20625                ......do                         33, 86.
                 461.2125                 ......do                         83, 86.
                 461.21875                ......do                         33, 86.
                 461.225                  ......do                         62.
                 461.23125                ......do                         33, 86.
                 461.2375                 ......do                         83, 86.
                 461.24375                ......do                         33, 86.
                 461.250                  ......do                         62.
                 461.25625                ......do                         33, 86.
                 461.2625                 ......do                         83, 86.
                 461.26875                ......do                         33, 86.
                 461.275                  ......do                         62.
                 461.28125                ......do                         33, 86.

47 CFR 90.35(b)(3) (enhanced display)                                                               page 133 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 461.2875                 ......do                         83, 86.
                 461.29375                ......do                         33, 86.
                 461.300                  ......do                         62.
                 461.30625                ......do                         33, 86.
                 461.3125                 ......do                         83, 86.
                 461.31875                ......do                         33, 86.
                 461.325                  ......do                         62.
                 461.33125                ......do                         33, 86.
                 461.3375                 ......do                         83, 86.
                 461.34375                ......do                         33, 86.
                 461.350                  ......do                         62.
                 461.35625                ......do                         33, 86.
                 461.3625                 ......do                         83, 86.
                 461.36875                ......do                         33, 86.
                 461.375                  ......do                         62.
                 461.38125                ......do                         33, 62.
                 461.3875                 ......do                         30, 62.
                 461.39375                ......do                         33, 62.
                 461.400                  ......do                         62.
                 461.40625                ......do                         33, 62.
                 461.4125                 ......do                         30, 62.
                 461.41875                ......do                         33, 62.
                 461.425                  ......do                         62.
                 461.43125                ......do                         33, 62.
                 461.4375                 ......do                         30, 62.
                 461.44375                ......do                         33, 62.
                 461.450                  ......do                         62.
                 461.45625                ......do                         33, 62.
                 461.4625                 ......do                         30, 62.
                 461.46875                ......do                         33, 62.
                 461.475                  ......do                         62.
                 461.48125                ......do                         33, 62.
                 461.4875                 ......do                         30, 62.
                 461.49375                ......do                         33, 62.
                 461.500                  ......do                         62.
                 461.50625                ......do                         33, 62.
                 461.5125                 ......do                         30, 62.
                 461.51875                ......do                         33, 62.
                 461.525                  ......do                         62.
                 461.53125                ......do                         33, 62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 134 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 461.5375                 ......do                         30, 62.
                 461.54375                ......do                         33, 62.
                 461.550                  ......do                         62.
                 461.55625                ......do                         33, 62.
                 461.5625                 ......do                         30, 62.
                 461.56875                ......do                         33, 62.
                 461.575                  ......do                         62.
                 461.58125                ......do                         33, 62.
                 461.5875                 ......do                         30, 62.
                 461.59375                ......do                         33, 62.
                 461.600                  ......do                         62.
                 461.60625                ......do                         33, 62.
                 461.6125                 ......do                         30, 62.
                 461.61875                ......do                         33, 62.
                 461.625                  ......do                         62.
                 461.63125                ......do                         33, 62.
                 461.6375                 ......do                         30, 62.
                 461.64375                ......do                         33, 62.
                 461.650                  ......do                         62.
                 461.65625                ......do                         33, 62.
                 461.6625                 ......do                         30, 62.
                 461.66875                ......do                         33, 62.
                 461.675                  ......do                         62.
                 461.68125                ......do                         33, 62.
                 461.6875                 ......do                         30, 62.
                 461.69375                ......do                         33, 62.
                 461.700                  ......do                         62.
                 461.70625                ......do                         33, 62.
                 461.7125                 ......do                         30, 62.
                 461.71875                ......do                         33, 62.
                 461.725                  ......do                         62.
                 461.73125                ......do                         33, 62.
                 461.7375                 ......do                         30, 62.
                 461.74375                ......do                         33, 62.
                 461.750                  ......do                         62.
                 461.75625                ......do                         33, 62.
                 461.7625                 ......do                         30, 62.
                 461.76875                ......do                         33, 62.
                 461.775                  ......do                         62.
                 461.78125                ......do                         33, 62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 135 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 461.7875                 ......do                         30, 62.
                 461.79375                ......do                         33, 62.
                 461.800                  ......do                         62.
                 461.80625                ......do                         33, 62.
                 461.8125                 ......do                         30, 62.
                 461.81875                ......do                         33, 62.
                 461.825                  ......do                         62.
                 461.83125                ......do                         33, 62.
                 461.8375                 ......do                         30, 62.
                 461.84375                ......do                         33, 62.
                 461.850                  ......do                         62.
                 461.85625                ......do                         33, 62.
                 461.8625                 ......do                         30, 62.
                 461.86875                ......do                         33, 62.
                 461.875                  ......do                         62.
                 461.88125                ......do                         33, 62.
                 461.8875                 ......do                         30, 62.
                 461.89375                ......do                         33, 62.
                 461.900                  ......do                         62.
                 461.90625                ......do                         33, 62.
                 461.9125                 ......do                         30, 62.
                 461.91875                ......do                         33, 62.
                 461.925                  ......do                         62.
                 461.93125                ......do                         33, 62.
                 461.9375                 ......do                         30, 62.
                 461.94375                ......do                         33, 62.
                 461.950                  ......do                         62.
                 461.95625                ......do                         33, 62.
                 461.9625                 ......do                         30, 62.
                 461.96875                ......do                         33, 62.
                 461.975                  ......do                         62.
                 461.98125                ......do                         33, 62.
                 461.9875                 ......do                         30, 62.
                 461.99375                ......do                         33, 62.
                 462.000                  ......do                         62.
                 462.00625                ......do                         33, 62.
                 462.0125                 ......do                         30, 62.
                 462.01875                ......do                         33, 62.
                 462.025                  ......do                         62.
                 462.03125                ......do                         33, 62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 136 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 462.0375                 ......do                          30, 62.
                 462.04375                ......do                          33, 62.
                 462.050                  ......do                          62.
                 462.05625                ......do                          33, 62.
                 462.0625                 ......do                          30, 62.
                 462.06875                ......do                          33, 62.
                 462.075                  ......do                          62.
                 462.08125                ......do                          33, 62.
                 462.0875                 ......do                          30, 62.
                 462.09375                ......do                          33, 62.
                 462.100                  ......do                          62.
                 462.10625                ......do                          33, 62.
                 462.1125                 ......do                          30, 62.
                 462.11875                ......do                          33, 62.
                 462.125                  ......do                          62.
                 462.13125                ......do                          33, 62.
                 462.1375                 ......do                          30, 62.
                 462.14375                ......do                          33, 62.
                 462.150                  ......do                          62.
                 462.15625                ......do                          33, 62.
                 462.1625                 ......do                          30, 62.
                 462.16875                ......do                          33, 62.
                 462.175                  ......do                          62.
                 462.18125                ......do                          33, 84.
                 462.1875                 ......do                          83, 84.
                 462.19375                ......do                          33, 84.
                 462.200                  ......do.
                 462.20625                ......do                          33, 85.
                 462.2125                 ......do                          83, 85.
                 462.21875                ......do                          33, 85.
                 462.225                  ......do.
                 462.23125                ......do                          33, 85.
                 462.2375                 ......do                          83, 85.
                 462.24375                ......do                          33, 85.
                 462.250                  ......do.
                 462.25625                ......do                          33, 85.
                 462.2625                 ......do                          83, 85.
                 462.26875                ......do                          33, 85.
                 462.275                  ......do.
                 462.28125                ......do                          33, 85.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 137 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                  47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations      Coordinator
                 462.2875                 ......do                          83, 85.
                 462.29375                ......do                          33, 85.
                 462.300                  ......do.
                 462.30625                ......do                          33, 85.
                 462.3125                 ......do                          83, 85.
                 462.31875                ......do                          33, 85.
                 462.325                  ......do.
                 462.33125                ......do                          33, 85.
                 462.3375                 ......do                          83, 85.
                 462.34375                ......do                          33, 85.
                 462.350                  ......do.
                 462.35625                ......do                          33, 85.
                 462.3625                 ......do                          83, 85.
                 462.36875                ......do                          33, 85.
                 462.375                  ......do.
                 462.38125                ......do                          33, 85.
                 462.3875                 ......do                          83, 85.
                 462.39375                ......do                          33, 85.
                 462.400                  ......do.
                 462.40625                ......do                          33, 85.
                 462.4125                 ......do                          83, 85.
                 462.41875                ......do                          33, 85.
                 462.425                  ......do.
                 462.43125                ......do                          33, 85.
                 462.4375                 ......do                          83, 85.
                 462.44375                ......do                          33, 85.
                 462.450                  ......do.
                 462.45625                ......do                          33, 84.
                 462.4625                 ......do                          83, 84.
                 462.46875                ......do                          33, 84.
                 462.475                  ......do                                              IP, IW
                 462.48125                ......do                          33, 84.
                 462.4875                 ......do                          83, 84.
                 462.49375                ......do                          84.
                 462.500                  ......do.
                 462.50625                ......do                          33, 84.
                 462.5125                 ......do                          83, 84.
                 462.51875                ......do                          33, 84.
                 462.525                  ......do                                              IP, IW
                 462.53125                ......do                          33

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 138 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 462.5375                 ......do                         2
                 462.7375                 ......do                         2
                 462.750                  Base                             29, 36
                 462.7625                 Mobile                           67, 86.
                 462.775                  Base                             29, 36.
                 462.7875                 Mobile                           67, 86.
                 462.800                  Base                             29, 36.
                 462.8125                 Mobile                           67, 86.
                 462.825                  Base                             29, 36.
                 462.8375                 Mobile                           67, 86.
                 462.850                  Base                             29, 36.
                 462.8625                 Mobile                           67, 86.
                 462.875                  Base                             29, 36.
                 462.8875                 Mobile                           67, 86.
                 462.900                  Base                             29, 36.
                 462.9125                 Mobile                           67, 86.
                 462.925                  Base                             29, 36.
                 462.9375                 Mobile                           88
                 462.94375                Base or mobile                   33.
                 463.200                  ......do                         62.
                 463.20625                ......do                         33, 62.
                 463.2125                 ......do                         30, 62.
                 463.21875                ......do                         33, 62.
                 463.225                  ......do                         62.
                 463.23125                ......do                         33, 62.
                 463.2375                 ......do                         30, 62.
                 463.24375                ......do                         33, 62.
                 463.250                  ......do                         62.
                 463.25625                ......do                         33, 62.
                 463.2625                 ......do                         30, 62.
                 463.26875                ......do                         33, 62.
                 463.275                  ......do                         62.
                 463.28125                ......do                         33, 62.
                 463.2875                 ......do                         30, 62.
                 463.29375                ......do                         33, 62.
                 463.300                  ......do                         62.
                 463.30625                ......do                         33, 62.
                 463.3125                 ......do                         30, 62.
                 463.31875                ......do                         33, 62.
                 463.325                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 139 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 463.33125                ......do                         33, 62.
                 463.3375                 ......do                         30, 62.
                 463.34375                ......do                         33, 62.
                 463.350                  ......do                         62.
                 463.35625                ......do                         33, 62.
                 463.3625                 ......do                         30, 62.
                 463.36875                ......do                         33, 62.
                 463.375                  ......do                         62.
                 463.38125                ......do                         33, 62.
                 463.3875                 ......do                         30, 62.
                 463.39375                ......do                         33, 62.
                 463.400                  ......do                         62.
                 463.40625                ......do                         33, 62.
                 463.4125                 ......do                         30, 62.
                 463.41875                ......do                         33, 62.
                 463.425                  ......do                         62.
                 463.43125                ......do                         33, 62.
                 463.4375                 ......do                         30, 62.
                 463.44375                ......do                         33, 62.
                 463.450                  ......do                         62.
                 463.45625                ......do                         33, 62.
                 463.4625                 ......do                         30, 62.
                 463.46875                ......do                         33, 62.
                 463.475                  ......do                         62.
                 463.48125                ......do                         33, 62.
                 463.4875                 ......do                         30, 62.
                 463.49375                ......do                         33, 62.
                 463.500                  ......do                         62.
                 463.50625                ......do                         33, 62.
                 463.5125                 ......do                         30, 62.
                 463.51875                ......do                         33, 62.
                 463.525                  ......do                         62.
                 463.53125                ......do                         33, 62.
                 463.5375                 ......do                         30, 62.
                 463.54375                ......do                         33, 62.
                 463.550                  ......do                         62.
                 463.55625                ......do                         33, 62.
                 463.5625                 ......do                         30, 62.
                 463.56875                ......do                         33, 62.
                 463.575                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 140 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 463.58125                ......do                         33, 62.
                 463.5875                 ......do                         30, 62.
                 463.59375                ......do                         33, 62.
                 463.600                  ......do                         62.
                 463.60625                ......do                         33, 62.
                 463.6125                 ......do                         30, 62.
                 463.61875                ......do                         33, 62.
                 463.625                  ......do                         62.
                 463.63125                ......do                         33, 62.
                 463.6375                 ......do                         30, 62.
                 463.64375                ......do                         33, 62.
                 463.650                  ......do                         62.
                 463.65625                ......do                         33, 62.
                 463.6625                 ......do                         30, 62.
                 463.66875                ......do                         33, 62.
                 463.675                  ......do                         62.
                 463.68125                ......do                         33, 62.
                 463.6875                 ......do                         30, 62.
                 463.69375                ......do                         33, 62.
                 463.700                  ......do                         62.
                 463.70625                ......do                         33, 62.
                 463.7125                 ......do                         30, 62.
                 463.71875                ......do                         33, 62.
                 463.725                  ......do                         62.
                 463.73125                ......do                         33, 62.
                 463.7375                 ......do                         30, 62.
                 463.74375                ......do                         33, 62.
                 463.750                  ......do                         62.
                 463.75625                ......do                         33, 62.
                 463.7625                 ......do                         30, 62.
                 463.76875                ......do                         33, 62.
                 463.775                  ......do                         62.
                 463.78125                ......do                         33, 62.
                 463.7875                 ......do                         30, 62.
                 463.79375                ......do                         33, 62.
                 463.800                  ......do                         62.
                 463.80625                ......do                         33, 62.
                 463.8125                 ......do                         30, 62.
                 463.81875                ......do                         33, 62.
                 463.825                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 141 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 463.83125                ......do                         33, 62.
                 463.8375                 ......do                         30, 62.
                 463.84375                ......do                         33, 62.
                 463.850                  ......do                         62.
                 463.85625                ......do                         33, 62.
                 463.8625                 ......do                         30, 62.
                 463.86875                ......do                         33, 62.
                 463.875                  ......do                         62.
                 463.88125                ......do                         33, 62.
                 463.8875                 ......do                         30, 62.
                 463.89375                ......do                         33, 62.
                 463.900                  ......do                         62.
                 463.90625                ......do                         33, 62.
                 463.9125                 ......do                         30, 62.
                 463.91875                ......do                         33, 62.
                 463.925                  ......do                         62.
                 463.93125                ......do                         33, 62.
                 463.9375                 ......do                         30, 62.
                 463.94375                ......do                         33, 62.
                 463.950                  ......do                         62.
                 463.95625                ......do                         33, 62.
                 463.9625                 ......do                         30, 62.
                 463.96875                ......do                         33, 62.
                 463.975                  ......do                         62.
                 463.98125                ......do                         33, 62.
                 463.9875                 ......do                         30, 62.
                 463.99375                ......do                         33, 62.
                 464.000                  ......do                         62.
                 464.00625                ......do                         33, 62.
                 464.0125                 ......do                         30, 62.
                 464.01875                ......do                         33, 62.
                 464.025                  ......do                         62.
                 464.03125                ......do                         33, 62.
                 464.0375                 ......do                         30, 62.
                 464.04375                ......do                         33, 62.
                 464.050                  ......do                         62.
                 464.05625                ......do                         33, 62.
                 464.0625                 ......do                         30, 62.
                 464.06875                ......do                         33, 62.
                 464.075                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 142 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 464.08125                ......do                         33, 62.
                 464.0875                 ......do                         30, 62.
                 464.09375                ......do                         33, 62.
                 464.100                  ......do                         62.
                 464.10625                ......do                         33, 62.
                 464.1125                 ......do                         30, 62.
                 464.11875                ......do                         33, 62.
                 464.125                  ......do                         62.
                 464.13125                ......do                         33, 62.
                 464.1375                 ......do                         30, 62.
                 464.14375                ......do                         33, 62.
                 464.150                  ......do                         62.
                 464.15625                ......do                         33, 62.
                 464.1625                 ......do                         30, 62.
                 464.16875                ......do                         33, 62.
                 464.175                  ......do                         62.
                 464.18125                ......do                         33, 62.
                 464.1875                 ......do                         30, 62.
                 464.19375                ......do                         33, 62.
                 464.200                  ......do                         62.
                 464.20625                ......do                         33, 62.
                 464.2125                 ......do                         30, 62.
                 464.21875                ......do                         33, 62.
                 464.225                  ......do                         62.
                 464.23125                ......do                         33, 62.
                 464.2375                 ......do                         30, 62.
                 464.24375                ......do                         33, 62.
                 464.250                  ......do                         62.
                 464.25625                ......do                         33, 62.
                 464.2625                 ......do                         30, 62.
                 464.26875                ......do                         33, 62.
                 464.275                  ......do                         62.
                 464.28125                ......do                         33, 62.
                 464.2875                 ......do                         30, 62.
                 464.29375                ......do                         33, 62.
                 464.300                  ......do                         62.
                 464.30625                ......do                         33, 62.
                 464.3125                 ......do                         30, 62.
                 464.31875                ......do                         33, 62.
                 464.325                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 143 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)           Limitations   Coordinator
                 464.33125                ......do                         33, 62.
                 464.3375                 ......do                         30, 62.
                 464.34375                ......do                         33, 62.
                 464.350                  ......do                         62.
                 464.35625                ......do                         33, 62.
                 464.3625                 ......do                         30, 62.
                 464.36875                ......do                         33, 62.
                 464.375                  ......do                         62.
                 464.38125                ......do                         33, 62.
                 464.3875                 ......do                         30, 62.
                 464.39375                ......do                         33, 62.
                 464.400                  ......do                         62.
                 464.40625                ......do                         33, 62.
                 464.4125                 ......do                         30, 62.
                 464.41875                ......do                         33, 62.
                 464.425                  ......do                         62.
                 464.43125                ......do                         33, 62.
                 464.4375                 ......do                         30, 62.
                 464.44375                ......do                         33, 62.
                 464.450                  ......do                         62.
                 464.45625                ......do                         33, 62.
                 464.4625                 ......do                         30, 62.
                 464.46875                ......do                         33, 62.
                 464.475                  ......do                         62.
                 464.48125                ......do                         33, 86.
                 464.4875                 ......do                         83, 86.
                 464.500                  ......do                         10, 34.
                 464.5125                 ......do                         83, 86.
                 464.51875                ......do                         33, 86.
                 464.525                  ......do                         62.
                 464.53125                ......do                         33, 86.
                 464.5375                 ......do                         83, 86.
                 464.550                  ......do                         10, 34.
                 464.5625                 ......do                         83, 86.
                 464.56875                ......do                         33, .
                 464.575                  ......do                         62.
                 464.58125                ......do                         33, 62.
                 464.5875                 ......do                         30, 62.
                 464.59375                ......do                         33, 62.
                 464.600                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 144 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 464.60625                ......do                         33, 62.
                 464.6125                 ......do                         30, 62.
                 464.61875                ......do                         33, 62.
                 464.625                  ......do                         62.
                 464.63125                ......do                         33, 62.
                 464.6375                 ......do                         30, 62.
                 464.64375                ......do                         33, 62.
                 464.650                  ......do                         62.
                 464.65625                ......do                         33, 62.
                 464.6625                 ......do                         30, 62.
                 464.66875                ......do                         33, 62.
                 464.675                  ......do                         62.
                 464.68125                ......do                         33, 62.
                 464.6875                 ......do                         30, 62.
                 464.69375                ......do                         33, 62.
                 464.700                  ......do                         62.
                 464.70625                ......do                         33, 62.
                 464.7125                 ......do                         30, 62.
                 464.71875                ......do                         33, 62.
                 464.725                  ......do                         62.
                 464.73125                ......do                         33, 62.
                 464.7375                 ......do                         30, 62.
                 464.74375                ......do                         33, 62.
                 464.750                  ......do                         62.
                 464.75625                ......do                         33, 62.
                 464.7625                 ......do                         30, 62.
                 464.76875                ......do                         33, 62.
                 464.775                  ......do                         62.
                 464.78125                ......do                         33, 62.
                 464.7875                 ......do                         30, 62.
                 464.79375                ......do                         33, 62.
                 464.800                  ......do                         62.
                 464.80625                ......do                         33, 62.
                 464.8125                 ......do                         30, 62.
                 464.81875                ......do                         33, 62.
                 464.825                  ......do                         62.
                 464.83125                ......do                         33, 62.
                 464.8375                 ......do                         30, 62.
                 464.84375                ......do                         33, 62.
                 464.850                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 145 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 464.85625                ......do                         33, 62.
                 464.8625                 ......do                         30, 62.
                 464.86875                ......do                         33, 62.
                 464.875                  ......do                         62.
                 464.88125                ......do                         33, 62.
                 464.8875                 ......do                         30, 62.
                 464.89375                ......do                         33, 62.
                 464.900                  ......do                         62.
                 464.90625                ......do                         33, 62.
                 464.9125                 ......do                         30, 62.
                 464.91875                ......do                         33, 62.
                 464.925                  ......do                         62.
                 464.93125                ......do                         33, 62.
                 464.9375                 ......do                         30, 62.
                 464.94375                ......do                         33, 62.
                 464.950                  ......do                         62.
                 464.95625                ......do                         33, 62.
                 464.9625                 ......do                         30, 62.
                 464.96875                ......do                         33, 62.
                 464.975                  ......do                         62.
                 464.98125                ......do                         33, 62.
                 464.9875                 Mobile                           67.
                 465.000                  Base                             29, 34, 36.
                 465.0125                 Mobile                           88.
                 465.01875                ......do                         33, 34.
                 465.650                  ......do                         62, 68
                 465.65625                ......do                         33, 62, 68
                 465.6625                 ......do                         30, 62, 68, 69
                 465.66875                ......do                         33, 62, 68
                 465.675                  ......do                         62, 68
                 465.68125                ......do                         33, 62, 68
                 465.6875                 ......do                         30, 62, 68, 69
                 465.69375                ......do                         33, 62, 68
                 465.700                  ......do                         62, 68
                 465.70625                ......do                         33, 62, 68
                 465.7125                 ......do                         30, 62, 68, 69
                 465.71875                ......do                         33, 62, 68
                 465.725                  ......do                         62, 68
                 465.73125                ......do                         33, 62, 68
                 465.7375                 ......do                         30, 62, 68, 69

47 CFR 90.35(b)(3) (enhanced display)                                                            page 146 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                              47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)        Limitations   Coordinator
                 465.74375                ......do                         33, 62, 68
                 465.750                  ......do                         62, 68
                 465.75625                ......do                         33, 62, 68
                 465.7625                 ......do                         30, 62, 68, 69
                 465.76875                ......do                         33, 62, 68
                 465.775                  ......do                         62, 68
                 465.78125                ......do                         33, 62, 68
                 465.7875                 ......do                         30, 62, 68, 69
                 465.79375                ......do                         33, 62, 68
                 465.800                  ......do                         62, 68
                 465.80625                ......do                         33, 62, 68
                 465.8125                 ......do                         30, 62, 68, 69
                 465.81875                ......do                         33, 62, 68
                 465.825                  ......do                         62, 68
                 465.83125                ......do                         33, 62, 68
                 465.8375                 ......do                         30, 62, 68, 69
                 465.84375                ......do                         33, 62, 68
                 465.850                  ......do                         62, 68
                 465.85625                ......do                         33, 62, 68
                 465.8625                 ......do                         30, 62, 68, 69
                 465.86875                ......do                         33, 62, 68
                 465.875                  ......do                         62, 68
                 465.88125                ......do                         33, 62, 68
                 465.8875                 ......do                         30, 62, 68, 69
                 465.89375                ......do                         33, 62, 68
                 465.900                  ......do                         63, 64.
                 465.90625                ......do                         33, 63, 87.
                 465.9125                 ......do                         63, 83, 87.
                 465.91875                ......do                         33, 63, 87.
                 465.925                  ......do                         63, 64.
                 465.93125                ......do                         33, 63, 87.
                 465.9375                 ......do                         63, 83, 87.
                 465.94375                ......do                         33, 63, 87.
                 465.950                  ......do                         63, 64.
                 465.95625                ......do                         33, 63, 87.
                 465.9625                 ......do                         63, 83, 87.
                 465.96875                ......do                         33, 63, 64.
                 465.975                  ......do                         64, 66.
                 465.98125                ......do                         33, 66, 87.
                 465.9875                 ......do                         66, 83, 87.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 147 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 465.99375                ......do                         33, 66, 87.
                 466.000                  ......do                         64, 66.
                 466.00625                ......do                         33, 66, 87.
                 466.0125                 ......do                         66, 69, 83, 87.
                 466.01875                ......do                         33, 66, 87.
                 466.025                  ......do                         62.
                 466.03125                ......do                         33, 86.
                 466.0375                 ......do                         83, 86.
                 466.04375                ......do                         33, 86.
                 466.050                  ......do                         62.
                 466.05625                ......do                         33, 86.
                 466.0625                 ......do                         83, 86.
                 466.06875                ......do                         33, 86.
                 466.075                  ......do                         62.
                 466.08125                ......do                         33, 86.
                 466.0875                 ......do                         83, 86.
                 466.09375                ......do                         33, 86.
                 466.100                  ......do                         62.
                 466.10625                ......do                         33, 86.
                 466.1125                 ......do                         83, 86.
                 466.11875                ......do                         33, 86.
                 466.125                  ......do                         62.
                 466.13125                ......do                         33, 86.
                 466.1375                 ......do                         83, 86.
                 466.14375                ......do                         33, 86.
                 466.150                  ......do                         62.
                 466.15625                ......do                         33, 86.
                 466.1625                 ......do                         83, 86.
                 466.16875                ......do                         33, 86.
                 466.175                  ......do                         62.
                 466.18125                ......do                         33, 84.
                 466.1875                 ......do                         83, 84.
                 466.19375                ......do                         33, 84.
                 466.200                  ......do                         62.
                 466.20625                ......do                         33, 85.
                 466.2125                 ......do                         83, 85.
                 466.21875                ......do                         33, 85.
                 466.225                  ......do                         62.
                 466.23125                ......do                         33, 85.
                 466.2375                 ......do                         83, 85.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 148 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 466.24375                ......do                         33, 85.
                 466.250                  ......do                         62.
                 466.25625                ......do                         33, 85.
                 466.2625                 ......do                         83, 85.
                 466.26875                ......do                         33, 85.
                 466.275                  ......do                         62.
                 466.28125                ......do                         33, 85.
                 466.2875                 ......do                         83, 85.
                 466.29375                ......do                         33, 85.
                 466.300                  ......do                         62.
                 466.30625                ......do                         33, 85.
                 466.3125                 ......do                         83, 85.
                 466.31875                ......do                         33, 85.
                 466.325                  ......do                         62.
                 466.33125                ......do                         33, 85.
                 466.3375                 ......do                         83, 85.
                 466.34375                ......do                         33, 85.
                 466.350                  ......do                         62.
                 466.35625                ......do                         33, 85.
                 466.3625                 ......do                         83, 85.
                 466.36875                ......do                         33, 85.
                 466.375                  ......do                         62.
                 466.38125                ......do                         33, 85.
                 466.3875                 ......do                         83, 85.
                 466.39375                ......do                         33, 85.
                 466.400                  ......do                         62.
                 466.40625                ......do                         33, 85.
                 466.4125                 ......do                         83, 85.
                 466.41875                ......do                         33, 85.
                 466.425                  ......do                         62.
                 466.43125                ......do                         33, 85.
                 466.4375                 ......do                         83, 85.
                 466.44375                ......do                         33, 85.
                 466.450                  ......do                         62.
                 466.45625                ......do                         33, 84.
                 466.4625                 ......do                         83, 84.
                 466.46875                ......do                         33, 84.
                 466.475                  ......do                         62.
                 466.48125                ......do                         33, 84.
                 466.4875                 ......do                         83, 84.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 149 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 466.49375                ......do                         33, 84.
                 466.500                  ......do                         62.
                 466.50625                ......do                         33, 84.
                 466.5125                 ......do                         83, 84.
                 466.51875                ......do                         33, 84.
                 466.525                  ......do                         62.
                 466.53125                ......do                         33, 62.
                 466.5375                 ......do                         30, 62.
                 466.54375                ......do                         33, 62.
                 466.550                  ......do                         62.
                 466.55625                ......do                         33, 62.
                 466.5625                 ......do                         30, 62.
                 466.56875                ......do                         33, 62.
                 466.575                  ......do                         62.
                 466.58125                ......do                         33, 62.
                 466.5875                 ......do                         30, 62.
                 466.59375                ......do                         33, 62.
                 466.600                  ......do                         62.
                 466.60625                ......do                         33, 62.
                 466.6125                 ......do                         30, 62.
                 466.61875                ......do                         33, 62.
                 466.625                  ......do                         62.
                 466.63125                ......do                         33, 62.
                 466.6375                 ......do                         30, 62.
                 466.64375                ......do                         33, 62.
                 466.650                  ......do                         62.
                 466.65625                ......do                         33, 62.
                 466.6625                 ......do                         30, 62.
                 466.66875                ......do                         33, 62.
                 466.675                  ......do                         62.
                 466.68125                ......do                         33, 62.
                 466.6875                 ......do                         30, 62.
                 466.69375                ......do                         33, 62.
                 466.700                  ......do                         62.
                 466.70625                ......do                         33, 62.
                 466.7125                 ......do                         30, 62.
                 466.71875                ......do                         33, 62.
                 466.725                  ......do                         62.
                 466.73125                ......do                         33, 62.
                 466.7375                 ......do                         30, 62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 150 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 466.74375                ......do                         33, 62.
                 466.750                  ......do                         62.
                 466.75625                ......do                         33, 62.
                 466.7625                 ......do                         30, 62.
                 466.76875                ......do                         33, 62.
                 466.775                  ......do                         62.
                 466.78125                ......do                         33, 62.
                 466.7875                 ......do                         30, 62.
                 466.79375                ......do                         33, 62.
                 466.800                  ......do                         62.
                 466.80625                ......do                         33, 62.
                 466.8125                 ......do                         30, 62.
                 466.81875                ......do                         33, 62.
                 466.825                  ......do                         62.
                 466.83125                ......do                         33, 62.
                 466.8375                 ......do                         30, 62.
                 466.84375                ......do                         33, 62.
                 466.850                  ......do                         62.
                 466.85625                ......do                         33, 62.
                 466.8625                 ......do                         67, 86.
                 466.86875                ......do                         33, 62.
                 466.875                  ......do                         62.
                 466.88125                ......do                         33, 62.
                 466.8875                 ......do                         67, 86.
                 466.89375                ......do                         33, 62.
                 466.900                  ......do                         62.
                 466.90625                ......do                         33, 62.
                 466.9125                 ......do                         67, 86.
                 466.91875                ......do                         33, 62.
                 466.925                  ......do                         62.
                 466.93125                ......do                         33, 62.
                 466.9375                 ......do                         88.
                 466.94375                ......do                         33, 62.
                 466.950                  ......do                         62.
                 466.95625                ......do                         33, 62.
                 466.9625                 ......do                         30, 62.
                 466.96875                ......do                         33, 62.
                 466.975                  ......do                         62.
                 466.98125                ......do                         33, 62.
                 466.9875                 ......do                         30, 62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 151 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations   Coordinator
                 466.99375                ......do                          33, 62.
                 467.000                  ......do                          62.
                 467.00625                ......do                          33, 62.
                 467.0125                 ......do                          30, 62.
                 467.01875                ......do                          33, 62.
                 467.025                  ......do                          62.
                 467.03125                ......do                          33, 62.
                 467.0375                 ......do                          30, 62.
                 467.04375                ......do                          33, 62.
                 467.050                  ......do                          62.
                 467.05625                ......do                          33, 62.
                 467.0625                 ......do                          30, 62.
                 467.06875                ......do                          33, 62.
                 467.075                  ......do                          62.
                 467.08125                ......do                          33, 62.
                 467.0875                 ......do                          30, 62.
                 467.09375                ......do                          33, 62.
                 467.100                  ......do                          62.
                 467.10625                ......do                          33, 62.
                 467.1125                 ......do                          30, 62.
                 467.11875                ......do                          33, 62.
                 467.125                  ......do                          62.
                 467.13125                ......do                          33, 62.
                 467.1375                 ......do                          30, 62.
                 467.14375                ......do                          33, 62.
                 467.150                  ......do                          62.
                 467.15625                ......do                          33, 62.
                 467.1625                 ......do                          30, 62.
                 467.16875                ......do                          33, 62.
                 467.175                  ......do                          62.
                 467.18125                ......do                          33, 62.
                 467.1875                 ......do                          30, 62.
                 467.19375                ......do                          33, 62.
                 467.200                  ......do.
                 467.20625                ......do                          33.
                 467.2125                 ......do                          30.
                 467.21875                ......do                          33.
                 467.225                  ......do.
                 467.23125                ......do                          33.
                 467.2375                 ......do                          30.

47 CFR 90.35(b)(3) (enhanced display)                                                              page 152 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                  47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations      Coordinator
                 467.24375                ......do                          33.
                 467.250                  ......do.
                 467.25625                ......do                          33.
                 467.2625                 ......do                          30.
                 467.26875                ......do                          33.
                 467.275                  ......do.
                 467.28125                ......do                          33.
                 467.2875                 ......do                          30.
                 467.29375                ......do                          33.
                 467.300                  ......do.
                 467.30625                ......do                          33.
                 467.3125                 ......do                          30.
                 467.31875                ......do                          33.
                 467.325                  ......do.
                 467.33125                ......do                          33.
                 467.3375                 ......do                          30.
                 467.34375                ......do                          33.
                 467.350                  ......do.
                 467.35625                ......do                          33.
                 467.3625                 ......do                          30.
                 467.36875                ......do                          33.
                 467.375                  ......do.
                 467.38125                ......do                          33.
                 467.3875                 ......do                          30.
                 467.39375                ......do                          33.
                 467.400                  ......do.
                 467.40625                ......do                          33.
                 467.4125                 ......do                          30.
                 467.41875                ......do                          33.
                 467.425                  ......do.
                 467.43125                ......do                          33.
                 467.4375                 ......do                          30.
                 467.44375                ......do                          33.
                 467.450                  ......do.
                 467.45625                ......do                          33.
                 467.4625                 ......do                          30.
                 467.46875                ......do                          33.
                 467.475                  ......do                                              IP, IW
                 467.48125                ......do                          33.
                 467.4875                 ......do                          30.

47 CFR 90.35(b)(3) (enhanced display)                                                                    page 153 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)         Limitations        Coordinator
                 467.49375                ......do                          33.
                 467.500                  ......do.
                 467.50625                ......do                          33.
                 467.5125                 ......do                          30.
                 467.51875                ......do                          33.
                 467.525                  ......do                                                IP, IW
                 467.53125                ......do                          33
                 467.5375                 ......do                          2
                 467.7375                 ......do                          2
                 467.74375                ......do                          33, 62
                 467.750                  ......do                          11, 12, 35, 60.
                 467.75625                ......do                          11, 12, 33, 35, 60.
                 467.7625                 ......do                          11, 12, 30, 35, 60.
                 467.76875                ......do                          11, 12, 33, 35, 60.
                 467.775                  ......do                          11, 12, 35, 60.
                 467.78125                ......do                          11, 12, 33, 35, 60.
                 467.7875                 ......do                          11, 12, 30, 35, 60.
                 467.79375                ......do                          11, 12, 33, 35, 60.
                 467.800                  ......do                          11, 12, 35, 60.
                 467.80625                ......do                          11, 12, 33, 35, 60.
                 467.8125                 ......do                          11, 12, 30, 35, 60.
                 467.81875                ......do                          11, 12, 33, 35, 60.
                 467.825                  ......do                          11, 12, 35, 60.
                 467.83125                ......do                          11, 12, 33, 35, 60.
                 467.8375                 ......do                          11, 12, 30, 35, 60.
                 467.850                  ......do                          11, 12, 35.
                 467.8625                 ......do                          67.
                 467.875                  ......do                          11, 12, 35.
                 467.8875                 ......do                          67.
                 467.900                  ......do                          11, 12, 35.
                 467.9125                 ......do                          67.
                 467.925                  ......do                          11, 12, 35.
                 467.93125                ......do                          33.
                 467.9375                 ......do                          30, 67.
                 467.94375                ......do                          33.
                 468.200                  ......do                          62.
                 468.20625                ......do                          33, 62.
                 468.2125                 ......do                          30, 62.
                 468.21875                ......do                          33, 62.
                 468.225                  ......do                          62.

47 CFR 90.35(b)(3) (enhanced display)                                                                      page 154 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 468.23125                ......do                         33, 62.
                 468.2375                 ......do                         30, 62.
                 468.24375                ......do                         33, 62.
                 468.250                  ......do                         62.
                 468.25625                ......do                         33, 62.
                 468.2625                 ......do                         30, 62.
                 468.26875                ......do                         33, 62.
                 468.275                  ......do                         62.
                 468.28125                ......do                         33, 62.
                 468.2875                 ......do                         30, 62.
                 468.29375                ......do                         33, 62.
                 468.300                  ......do                         62.
                 468.30625                ......do                         33, 62.
                 468.3125                 ......do                         30, 62.
                 468.31875                ......do                         33, 62.
                 468.325                  ......do                         62.
                 468.33125                ......do                         33, 62.
                 468.3375                 ......do                         30, 62.
                 468.34375                ......do                         33, 62.
                 468.350                  ......do                         62.
                 468.35625                ......do                         33, 62.
                 468.3625                 ......do                         30, 62.
                 468.36875                ......do                         33, 62.
                 468.375                  ......do                         62.
                 468.38125                ......do                         33, 62.
                 468.3875                 ......do                         30, 62.
                 468.39375                ......do                         33, 62.
                 468.400                  ......do                         62.
                 468.40625                ......do                         33, 62.
                 468.4125                 ......do                         30, 62.
                 468.41875                ......do                         33, 62.
                 468.425                  ......do                         62.
                 468.43125                ......do                         33, 62.
                 468.4375                 ......do                         30, 62.
                 468.44375                ......do                         33, 62.
                 468.450                  ......do                         62.
                 468.45625                ......do                         33, 62.
                 468.4625                 ......do                         30, 62.
                 468.46875                ......do                         33, 62.
                 468.475                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 155 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 468.48125                ......do                         33, 62.
                 468.4875                 ......do                         30, 62.
                 468.49375                ......do                         33, 62.
                 468.500                  ......do                         62.
                 468.50625                ......do                         33, 62.
                 468.5125                 ......do                         30, 62.
                 468.51875                ......do                         33, 62.
                 468.525                  ......do                         62.
                 468.53125                ......do                         33, 62.
                 468.5375                 ......do                         30, 62.
                 468.54375                ......do                         33, 62.
                 468.550                  ......do                         62.
                 468.55625                ......do                         33, 62.
                 468.5625                 ......do                         30, 62.
                 468.56875                ......do                         33, 62.
                 468.575                  ......do                         62.
                 468.58125                ......do                         33, 62.
                 468.5875                 ......do                         30, 62.
                 468.59375                ......do                         33, 62.
                 468.600                  ......do                         62.
                 468.60625                ......do                         33, 62.
                 468.6125                 ......do                         30, 62.
                 468.61875                ......do                         33, 62.
                 468.625                  ......do                         62.
                 468.63125                ......do                         33, 62.
                 468.6375                 ......do                         30, 62.
                 468.64375                ......do                         33, 62.
                 468.650                  ......do                         62.
                 468.65625                ......do                         33, 62.
                 468.6625                 ......do                         30, 62.
                 468.66875                ......do                         33, 62.
                 468.675                  ......do                         62.
                 468.68125                ......do                         33, 62.
                 468.6875                 ......do                         30, 62.
                 468.69375                ......do                         33, 62.
                 468.700                  ......do                         62.
                 468.70625                ......do                         33, 62.
                 468.7125                 ......do                         30, 62.
                 468.71875                ......do                         33, 62.
                 468.725                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 156 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 468.73125                ......do                         33, 62.
                 468.7375                 ......do                         30, 62.
                 468.74375                ......do                         33, 62.
                 468.750                  ......do                         62.
                 468.75625                ......do                         33, 62.
                 468.7625                 ......do                         30, 62.
                 468.76875                ......do                         33, 62.
                 468.775                  ......do                         62.
                 468.78125                ......do                         33, 62.
                 468.7875                 ......do                         30, 62.
                 468.79375                ......do                         33, 62.
                 468.800                  ......do                         62.
                 468.80625                ......do                         33, 62.
                 468.8125                 ......do                         30, 62.
                 468.81875                ......do                         33, 62.
                 468.825                  ......do                         62.
                 468.83125                ......do                         33, 62.
                 468.8375                 ......do                         30, 62.
                 468.84375                ......do                         33, 62.
                 468.850                  ......do                         62.
                 468.85625                ......do                         33, 62.
                 468.8625                 ......do                         30, 62.
                 468.86875                ......do                         33, 62.
                 468.875                  ......do                         62.
                 468.88125                ......do                         33, 62.
                 468.8875                 ......do                         30, 62.
                 468.89375                ......do                         33, 62.
                 468.900                  ......do                         62.
                 468.90625                ......do                         33, 62.
                 468.9125                 ......do                         30, 62.
                 468.91875                ......do                         33, 62.
                 468.925                  ......do                         62.
                 468.93125                ......do                         33, 62.
                 468.9375                 ......do                         30, 62.
                 468.94375                ......do                         33, 62.
                 468.950                  ......do                         62.
                 468.95625                ......do                         33, 62.
                 468.9625                 ......do                         30, 62.
                 468.96875                ......do                         33, 62.
                 468.975                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 157 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 468.98125                ......do                         33, 62.
                 468.9875                 ......do                         30, 62.
                 468.99375                ......do                         33, 62.
                 469.000                  ......do                         62.
                 469.00625                ......do                         33, 62.
                 469.0125                 ......do                         30, 62.
                 469.01875                ......do                         33, 62.
                 469.025                  ......do                         62.
                 469.03125                ......do                         33, 62.
                 469.0375                 ......do                         30, 62.
                 469.04375                ......do                         33, 62.
                 469.050                  ......do                         62.
                 469.05625                ......do                         33, 62.
                 469.0625                 ......do                         30, 62.
                 469.06875                ......do                         33, 62.
                 469.075                  ......do                         62.
                 469.08125                ......do                         33, 62.
                 469.0875                 ......do                         30, 62.
                 469.09375                ......do                         33, 62.
                 469.100                  ......do                         62.
                 469.10625                ......do                         33, 62.
                 469.1125                 ......do                         30, 62.
                 469.11875                ......do                         33, 62.
                 469.125                  ......do                         62.
                 469.13125                ......do                         33, 62.
                 469.1375                 ......do                         30, 62.
                 469.14375                ......do                         33, 62.
                 469.150                  ......do                         62.
                 469.15625                ......do                         33, 62.
                 469.1625                 ......do                         30, 62.
                 469.16875                ......do                         33, 62.
                 469.175                  ......do                         62.
                 469.18125                ......do                         33, 62.
                 469.1875                 ......do                         30, 62.
                 469.19375                ......do                         33, 62.
                 469.200                  ......do                         62.
                 469.20625                ......do                         33, 62.
                 469.2125                 ......do                         30, 62.
                 469.21875                ......do                         33, 62.
                 469.225                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 158 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 469.23125                ......do                         33, 62.
                 469.2375                 ......do                         30, 62.
                 469.24375                ......do                         33, 62.
                 469.250                  ......do                         62.
                 469.25625                ......do                         33, 62.
                 469.2625                 ......do                         30, 62.
                 469.26875                ......do                         33, 62.
                 469.275                  ......do                         62.
                 469.28125                ......do                         33, 62.
                 469.2875                 ......do                         30, 62.
                 469.29375                ......do                         33, 62.
                 469.300                  ......do                         62.
                 469.30625                ......do                         33, 62.
                 469.3125                 ......do                         30, 62.
                 469.31875                ......do                         33, 62.
                 469.325                  ......do                         62.
                 469.33125                ......do                         33, 62.
                 469.3375                 ......do                         30, 62.
                 469.34375                ......do                         33, 62.
                 469.350                  ......do                         62.
                 469.35625                ......do                         33, 62.
                 469.3625                 ......do                         30, 62.
                 469.36875                ......do                         33, 62.
                 469.375                  ......do                         62.
                 469.38125                ......do                         33, 62.
                 469.3875                 ......do                         30, 62.
                 469.39375                ......do                         33, 62.
                 469.400                  ......do                         62.
                 469.40625                ......do                         33, 62.
                 469.4125                 ......do                         30, 62.
                 469.41875                ......do                         33, 62.
                 469.425                  ......do                         62.
                 469.43125                ......do                         33, 62.
                 469.4375                 ......do                         30, 62.
                 469.44375                ......do                         33, 62.
                 469.450                  ......do                         62.
                 469.45625                ......do                         33, 62.
                 469.4625                 ......do                         30, 62.
                 469.46875                ......do                         33, 62.
                 469.475                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                             page 159 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 469.48125                ......do                         33, 86.
                 469.4875                 ......do                         83, 86.
                 469.500                  ......do                         10, 34.
                 469.5125                 ......do                         83, 86.
                 469.51875                ......do                         33, 86.
                 469.525                  ......do                         62.
                 469.53125                ......do                         33, 86.
                 469.5375                 ......do                         83, 86.
                 469.550                  ......do                         10, 34.
                 469.5625                 ......do                         83, 86.
                 469.56875                ......do                         33, 86.
                 469.575                  ......do                         62.
                 469.58125                ......do                         33, 62.
                 469.5875                 ......do                         30, 62.
                 469.59375                ......do                         33, 62.
                 469.600                  ......do                         62.
                 469.60625                ......do                         33, 62.
                 469.6125                 ......do                         30, 62.
                 469.61875                ......do                         33, 62.
                 469.625                  ......do                         62.
                 469.63125                ......do                         33, 62.
                 469.6375                 ......do                         30, 62.
                 469.64375                ......do                         33, 62.
                 469.650                  ......do                         62.
                 469.65625                ......do                         33, 62.
                 469.6625                 ......do                         30, 62.
                 469.66875                ......do                         33, 62.
                 469.675                  ......do                         62.
                 469.68125                ......do                         33, 62.
                 469.6875                 ......do                         30, 62.
                 469.69375                ......do                         33, 62.
                 469.700                  ......do                         62.
                 469.70625                ......do                         33, 62.
                 469.7125                 ......do                         30, 62.
                 469.71875                ......do                         33, 62.
                 469.725                  ......do                         62.
                 469.73125                ......do                         33, 62.
                 469.7375                 ......do                         30, 62.
                 469.74375                ......do                         33, 62.
                 469.750                  ......do                         62.

47 CFR 90.35(b)(3) (enhanced display)                                                            page 160 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.35(b)(3)
Private Land Mobile Radio Services

                   Frequency or band                 Class of station(s)         Limitations   Coordinator
                 469.75625                ......do                         33, 62.
                 469.7625                 ......do                         30, 62.
                 469.76875                ......do                         33, 62.
                 469.775                  ......do                         62.
                 469.78125                ......do                         33, 62.
                 469.7875                 ......do                         30, 62.
                 469.79375                ......do                         33, 62.
                 469.800                  ......do                         62.
                 469.80625                ......do                         33, 62.
                 469.8125                 ......do                         30, 62.
                 469.81875                ......do                         33, 62.
                 469.825                  ......do                         62.
                 469.83125                ......do                         33, 62.
                 469.8375                 ......do                         30, 62.
                 469.84375                ......do                         33, 62.
                 469.850                  ......do                         62.
                 469.85625                ......do                         33, 62.
                 469.8625                 ......do                         30, 62.
                 469.86875                ......do                         33, 62.
                 469.875                  ......do                         62.
                 469.88125                ......do                         33, 62.
                 469.8875                 ......do                         30, 62.
                 469.89375                ......do                         33, 62.
                 469.900                  ......do                         62.
                 469.90625                ......do                         33, 62.
                 469.9125                 ......do                         30, 62.
                 469.91875                ......do                         33, 62.
                 469.925                  ......do                         62.
                 469.93125                ......do                         33, 62.
                 469.9375                 ......do                         30, 62.
                 469.94375                ......do                         33, 62.
                 469.950                  ......do                         62.
                 469.95625                ......do                         33, 62.
                 469.9625                 ......do                         30, 62.
                 469.96875                ......do                         33, 62.
                 469.975                  ......do                         62.
                 469.98125                ......do                         33, 62.
                 470 to 512               Base or mobile                   70.
                 809 to 824               Mobile                           71
                 854 to 869               Base or mobile                   71

47 CFR 90.35(b)(3) (enhanced display)                                                             page 161 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                               47 CFR 90.35(c)
Private Land Mobile Radio Services

                   Frequency or band                  Class of station(s)               Limitations         Coordinator
                 896 to 901               Mobile                                  71.
                 928 and above            Operational fixed                       72.
                 929 to 930               Base only                               73.
                 935 to 940               Base or mobile                          71.
                 1427 to 1432             Base, mobile or operational fixed.      55
                 2,450 to 2,500           Base or mobile                          74.
                 5895–5925                ......do                                90, 91                 Not applicable.
                 10,550 to 10, 680        ......do                                76.

     (c) Explanation of assignment limitations appearing in the frequency table of paragraph (b)(3) of this section:

           (1) Use of this frequency is permitted as follows:

                 (i)   Only entities engaged in the following activities are eligible to use this spectrum, and then only
                       in accordance with § 90.266:

                       (A) Prospecting for petroleum, natural gas or petroleum products;

                       (B) Distribution of electric power or the distribution by pipeline of fuels or water;

                       (C) Exploration, its support services, and the repair of pipelines; or

                       (D) The repair of telecommunications circuits.

                (ii) Except as provided in this part, licensees may not use these frequencies in the place of other
                     operational circuits permitted by the Commission's rules. Circuits operating on these
                     frequencies may be used only for the following purposes:

                       (A) Providing standby backup communications for circuits which have been disrupted and
                           which directly affect the safety of life, property, or the national interest or are used for
                           coordinating inter-utility, intra-utility, and power pool distribution of electric power;

                       (B) Providing operational circuits during exploration;

                       (C) Coordinating the repair of inter-utility, intra-utility, and power pool electric power
                           distribution networks, or the repair of pipelines;

                       (D) Exploratory efforts in mining for solid fuels, minerals, and metals important to the national
                           interest;

                       (E) Repair of pipelines used for the transmission of fuel or water;

                       (F) Services supporting the exploration for energy or mineral resources important to the
                           national interest, without which such exploration cannot be conducted; or

                       (G) Coordinating the repair of wireline or point-to-point microwave circuits.

           (2) This frequency will be assigned with an authorized bandwidth not to exceed 4 kHz.

           (3) This frequency is available for assignment only to stations utilized for geophysical purposes.

47 CFR 90.35(c)(3) (enhanced display)                                                                          page 162 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.35(c)(4)
Private Land Mobile Radio Services

           (4) Geophysical operations may use tone or impulse signaling for purposes other than indicating failure
               of equipment or abnormal conditions on this frequency. All such tone or impulse signaling shall be
               on a secondary basis and subject to the following limitations:

                 (i)   Maximum duration of a single non-voice transmission may not exceed 3 minutes;

                (ii) The bandwidth utilized for secondary tone or impulse signaling shall not exceed that authorized
                     to the licensee for voice emission on the frequency concerned;

                (iii) Frequency loading resulting from the use of secondary tone or impulse signaling will not be
                      considered in whole or in part, as a justification for authorizing additional frequencies in the
                      licensee's mobile service system; and

                (iv) The maximum transmitter output power for tone or impulse transmissions shall not exceed 50
                     watts.

           (5) Frequencies below 25 MHz will be assigned to base or mobile stations only upon a satisfactory
               showing that, from a safety of life standpoint, frequencies above 25 MHz will not meet the
               operational requirements of the applicant.

           (6) Frequencies may be assigned in pairs with the separation between base and mobile transmit
               frequencies being 5.26 MHz. A mobile station may be assigned the frequency which would normally
               be assigned to a base station for single frequency operation. However, this single-frequency
               operation may be subject to interference that would not occur to a two-frequency system. Base or
               mobile stations operating wholly within Standard Metropolitan Areas having 50,000 or more
               population (1950 Census) must be operated in the half-duplex mode.

           (7) This frequency is available for assignment to geophysical stations on a secondary basis to other
               licensees. Geophysical stations must cease operations on this frequency immediately upon
               receiving notice that interference is being caused to mobile service stations.

           (8) This frequency is primarily available for oil spill containment and cleanup operations and for training
               and drills essential in the preparations for the containment and cleanup of oil spills. It is secondarily
               available for general base-mobile operations on a noninterference basis. Secondary users of this
               frequency are required to forego its use should oil spill containment and cleanup activities be
               present in their area of operation or upon notice by the Commission or a primary user that harmful
               interference is being caused to oil spill containment or cleanup activities in other areas.

           (9) Operation on this frequency is secondary to stations in the maritime mobile service operating in
               accordance with the International table of frequency allocations.

          (10) This frequency will be assigned only to stations used in itinerant operations, except within 56 km (35
               miles) of Detroit, Mich., where it may be assigned for either itinerant or permanent area operations
               (i.e., general use).

          (11) Operation on this frequency is limited to a maximum output power of 2 watts; and each station
               authorized will be classified and licensed as a mobile station. Any units of such a station, however,
               may provide the operational functions of a base or fixed station on a secondary basis to mobile
               service operations, Provided, that the separation between the control point and the center of the
               radiating portion of the antenna of any units so used does not exceed 8 m (25 ft.).

          (12) This frequency may not be used aboard aircraft in flight.

          (13) This frequency is shared with the Public Safety Pool.

47 CFR 90.35(c)(13) (enhanced display)                                                                      page 163 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(c)(14)
Private Land Mobile Radio Services

          (14) Operation on this frequency is limited to a maximum output power of 1 watt and each station
               authorized will be classified and licensed as a mobile station. Any units of such a station, however,
               may provide the operational functions of a base or fixed station on a secondary basis to mobile
               service operations, provided that the separation between the control point and the center of the
               radiating portion of the antenna of any units so used does not exceed 8m (25 ft.).

          (15) This Government frequency is available for shared Government/non-Government use by stations
               engaged in oil spill containment and cleanup operations and for training and drills essential in the
               preparation for containment and cleanup of oil spills. Such use will be confined to inland and coastal
               waterways.

          (16) This frequency may be assigned only to stations operating in an interconnected or coordinated utility
               system in accordance with an operational communications plan which sets forth all points of
               communications. Authorizations at variance with an established operational communications plan
               will be made only on a secondary basis.

          (17) This frequency will be assigned only to stations used in itinerant operations.

          (18) This frequency is also used on a secondary basis for cordless telephones under part 15 of this
               chapter.

          (19) In addition to single frequency operation, this frequency is available to base and mobile stations for
               the paired frequency mode of operation. For two frequency systems, the separation between base
               and mobile transmit frequencies is 500 kHz with the base stations transmitting on the higher of the
               two frequencies.

          (20) In the State of Alaska only, the frequency 44.10 MHz is available for assignment on a primary basis
               to stations in the Common Carrier Rural Radio Service utilizing meteor burst communications. The
               frequency may be used by private radio stations for meteor burst communications on a secondary,
               non-interference basis. Usage shall be in accordance with parts 22 and 90 of this chapter. Stations
               utilizing meteor burst communications shall not cause harmful interference to stations of other radio
               services operating in accordance with the allocation table.

          (21) In the State of Alaska only, the frequency 44.20 MHz is available for assignment on a primary basis
               to private land mobile radio stations utilizing meteor burst communications. The frequency may be
               used by common carrier stations for meteor burst communications on a secondary, non-interference
               basis. Usage shall be in accordance with parts 22 and 90 of this chapter. Stations utilizing meteor
               burst communications shall not cause harmful interference to stations of other radio services
               operating in accordance with the allocation table.

          (22) The frequencies available for use at operational fixed stations in the band 72-76 MHz are listed in §
               90.257(a)(1). These frequencies are shared with other services and are available only in accordance
               with the provisions of § 90.257. Seismic telemetry transmitters certificated with 1 watt or less power
               and a frequency tolerance not exceeding ±0.005% may be used as temporary operational fixed
               stations.

          (23) This frequency is shared with fixed stations in other services and is subject to no protection from
               interference.

          (24) All operations on this frequency are subject to the provisions of § 90.257(b).

          (25) This frequency is shared with the Radio Control (R/C) Service, of the part 95 Personal Radio Services,
               where it is used solely for the radio control of models.

47 CFR 90.35(c)(25) (enhanced display)                                                                  page 164 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(c)(26)
Private Land Mobile Radio Services

          (26) Pulsed modulations will not be authorized on this frequency.

          (27) Assignment of frequencies in this band are subject to the provisions of § 90.173. In the 150–170
               MHz band, licensees as of August 18, 1995 who operate systems that are 2.5 kHz removed from
               regularly assignable frequencies may continue to operate on a secondary, non-interference basis
               after August 1, 2003.

          (28) In Puerto Rico and the Virgin Islands this frequency is subject to the following:

                 (i)   This frequency is assigned only for one-way paging communications to mobile receivers. Only
                       A1D, A2D, A3E, F1D, F2D, F3E, or G3E emissions may be authorized. Licensees may provide one-
                       way paging communications on this frequency to individuals, persons eligible for licensing
                       under subparts B or C of this part, to representatives of Federal Government agencies, and
                       foreign governments and their representatives; and

                (ii) This frequency will not be assigned to stations for use at temporary locations.

          (29) This frequency will be authorized a channel bandwidth of 25 kHz. Except when limited elsewhere,
               one-way paging transmitters on this frequency may operate with an output power of 350 watts.

          (30) This frequency will be assigned with an authorized bandwidth not to exceed 11.25 kHz. In the
               450–470 MHz band, secondary telemetry operations pursuant to § 90.238(e) will be authorized on
               this frequency.

          (31) Use of this frequency is limited to stations located in Puerto Rico and the Virgin Islands.

          (32) This frequency is not available to stations located in Puerto Rico and the Virgin Islands.

          (33) This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

          (34) Operation on this frequency is limited to a maximum output power of 35 watts.

          (35) This frequency may be used for mobile operation for radio remote control and telemetering
               functions. A1D, A2D, F1D, or F2D emission may be authorized and mobile stations used to control
               remote objects or devices may be operated on the continuous carrier transmit mode.

          (36) This frequency is assigned only for one-way paging communications to mobile receivers. Only A1D,
               A2D, A3E, F1D, F2D, F3E, or G3E emissions may be authorized. Licensees may provide one-way
               paging communications on this frequency to individuals, persons eligible for licensing under
               subparts B or C of this part, to representatives of Federal Government agencies, and foreign
               governments and their representatives.

          (37) This frequency is available on a secondary basis to one-way paging communications.

          (38) This frequency will not be assigned to stations for use at temporary locations.

          (39) For FM transmitters the sum of the highest modulating frequency and the amount of frequency
               deviation may not exceed 2.8 kHz and the maximum frequency deviation may not exceed 2.5 kHz.
               For AM transmitters the highest modulating frequency may not exceed 2.0 kHz. The carrier
               frequency must be maintained within 0.0005 percent, and the authorized bandwidth may not exceed
               6 kHz.

          (40) This frequency is shared with the Public Safety Pool for remote control and telemetry operations.

47 CFR 90.35(c)(40) (enhanced display)                                                                      page 165 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(c)(41)
Private Land Mobile Radio Services

          (41) Operational fixed stations must employ directional antennas having a front-to-back ratio of at least
               20 dB. Omnidirectional antennas having unity gain may be employed for stations communicating
               with at least three receiving locations separated by 160 deg. of azimuth.

          (42) The maximum effective radiated power (ERP) may not exceed 20 watts for fixed stations and 2 watts
               for mobile stations. The height of the antenna system may not exceed 15.24 meters (50 ft.) above
               the ground. All such operation is on a secondary basis to adjacent channel land mobile operations.

          (43) This frequency is available for the following:

                 (i)   Assignment to multiple address fixed stations employing omnidirectional antennas used for
                       power utility peak load shaving and shedding and to mobile stations used for the remote
                       control of objects and devices. The maximum power that may be authorized to fixed stations is
                       300 watts output, and the maximum power that may be authorized for mobile stations is 1 watt
                       output. This frequency may also be assigned to operational fixed stations employing directional
                       antenna systems (front-to-back ratio of 20 dB) when such stations are located at least 120 km.
                       (75 mi.) from the boundaries of any urbanized area of 200,000 or more population. (U.S.
                       Census of Population, 1960). The maximum power output of the transmitter for such fixed
                       stations may not exceed 50 watts. A1A, A1D, A2B, A2D, F1B, F1D, F2B, F2D, G1B, G1D, G2B, or
                       G2D emission may be authorized; or

                (ii) On a secondary basis for remote control and telemetry operations, subject to paragraphs
                     (c)(41), (42), (43), (46), and (47) of this section.

          (44) The maximum output power of the transmitter may not exceed 50 watts for fixed stations and 1 watt
               for mobile stations. A1A, A1D, A2B, A2D, F1B, F1D, F2B, F2D, G1B, G1D, G2B, or G2D emission may be
               authorized, and mobile stations used to control remote objects and devices may be operated in the
               continuous transmit mode.

          (45) [Reserved]

          (46) This frequency is limited to a maximum power of 20 watts.

          (47) This frequency may be used for mobile operation for remote control and telemetering functions. A1D,
               A2D, F1D, or F2D emission may be authorized. The use of the continuous carrier transmit mode for
               these purposes is permitted only for stations authorized and continuously licensed since before May
               21, 1971.

          (48) Operation on this frequency is limited to a maximum output power of 20 watts.

          (49) Operation on this frequency is limited to a maximum output power of 75 watts.

          (50) This frequency may also be used for the transmission of tone or voice communications, including
               such communications when prerecorded, for purposes of automatically indicating abnormal
               conditions of trackage and railroad rolling stock when in motion, on a secondary basis to other
               stations on this frequency. All such operations shall be subject to the following:

                 (i)   The output power shall not exceed 30 watts;

                (ii) The bandwidth used shall not exceed that authorized to the licensee for voice transmissions on
                     the frequency concerned;

47 CFR 90.35(c)(50)(ii) (enhanced display)                                                              page 166 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(c)(50)(iii)
Private Land Mobile Radio Services

                 (iii) The station shall be so designed and installed that it can normally be activated only by its
                       associated automatic control equipment and, in addition, it shall be equipped with a time delay
                       or clock device which will deactivate the station within three (3) minutes following activation by
                       the last car in the train; and

                 (iv) Stations authorized pursuant to the provisions of this paragraph are exempt from the station
                      identification requirements of § 90.425.

          (51) In Puerto Rico and the Virgin Islands only, this frequency is available on a shared basis with remote
               pickup broadcast stations.

          (52) In Puerto Rico and the Virgin Islands only, this frequency is available to all stations operating in the
               Industrial/Business Pool and may be coordinated by any frequency coordinator certified in the
               Industrial/Business Pool.

          (53) Frequencies in this band will be assigned only for transmitting hydrological or meteorological data or
               for low power wireless microphones in accordance with the provisions of § 90.265.

          (54) For FM transmitters the sum of the highest modulating frequency and the amount of frequency
               deviation may not exceed 1.7 kHz and the maximum deviation may not exceed 1.2 kHz. For AM
               transmitters the highest modulating frequency may not exceed 1.2 kHz. The carrier frequency must
               be maintained within 0.0005 percent and the authorized bandwidth may not exceed 3 kHz.

          (55) This band is available to stations operating in this service subject to the provisions of § 90.259.

          (56) Subpart T of this part contains rules for assignment of frequencies in the 220–222 MHz band.

          (57) The requirements for secondary fixed use of frequencies in this band are set forth in § 90.261.

          (58) Operational fixed assignments on this frequency will only be made to an itinerant fixed control or
               relay station on a secondary basis to land-mobile stations in the Industrial/Business Pool, provided
               that the fixed relay or control station is to be associated with base and mobile facilities authorized to
               use other frequencies available for itinerant operation in the Industrial/Business Pool. All such use of
               these frequencies for fixed systems is limited to locations 161 or more km. (100 mi.) from the center
               of any urbanized area of 200,000 or more population, except that the distance may be 120 km. (75
               mi.) if the output power does not exceed 20 watts. All such fixed systems are limited to a maximum
               of two frequencies and must employ directional antennas with a front-to-back ratio of at least 15 dB.
               The centers of urbanized areas of 200,000 or more population are determined from the appendix,
               page 226, of the U.S. Commerce publication, “Air Line Distance Between Cities in the United States.”
               Urbanized areas of 200,000 or more population are defined in the U.S. Census of Population, 1960,
               volume 1, table 23, page 1–50.

          (59) This frequency may be assigned primarily for stations used for the purpose of controlling slave
               locomotives that are placed within a train to assist the lead locomotive by providing, among other
               functions, auxiliary starting, pulling, and braking actions. Additionally, on a secondary basis this
               frequency may be assigned for remote control of all types of locomotives and, within a railroad yard
               or terminal area, for remote control of cab indicator devices placed with a locomotive to give visual
               signals to the operator of the locomotive. (A1, A2, F1 or F2 emissions may be authorized.)

          (60)

47 CFR 90.35(c)(60) (enhanced display)                                                                      page 167 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.35(c)(60)(i)
Private Land Mobile Radio Services

                 (i)   This frequency is available for voice or non-voice communications concerned with cargo
                       handling from a dock or cargo handling facility, a vessel alongside the dock, or cargo handling
                       facility. The effective radiated power (ERP) shall not exceed 2 watts. Mobile relay stations may
                       be temporarily installed on vessels located at or in the vicinity of a dock or cargo handling
                       facility. The center of the radiating system of the mobile relay shall be located no more than 3
                       meters (10 feet) above the vessel's highest working dock.

                (ii) This frequency is also available for low power non-cargo handling operations, both voice and
                     non-voice, on a secondary basis to cargo handling communications. Such operations are not
                     subject to the power limitations in paragraph (c)(60)(i) of this section on the following
                     frequencies: 457.525 MHz, 457.550 MHz, 457.5625 MHz, 457.575 MHz, 457.5875 MHz,
                     457.600 MHz, and 457.6125 MHz. This frequency will not be assigned for non-cargo handling
                     operations at temporary locations.

                (iii) For mobile relay operations under paragraph (c)(60)(i) of this section, frequency pairing is as
                      follows:

                                            Mobile relay (MHz)1                                 Mobile (MHz)
                        457.525                                                                                    467.750
                        457.53125                                                                                467.75625
                        457.5375                                                                                  467.7625
                        457.54375                                                                                467.76875
                        457.550                                                                                    467.775
                        457.55625                                                                                467.78125
                        457.5625                                                                                  467.7875
                        457.56875                                                                                467.79375
                        457.575                                                                                    467.800
                        457.58125                                                                                467.80625
                        457.5875                                                                                  467.8125
                        457.59375                                                                                467.81875
                        457.600                                                                                    467.825
                        457.60625                                                                                467.83125
                        457.6125
                        457.61875

                       1   The mobile relay frequencies may also be used for single frequency simplex.

          (61) This frequency is available for assignment as follows:

                 (i)   To persons furnishing commercial air transportation service or, pursuant to § 90.179, to an
                       entity furnishing radio communications service to persons so engaged, for stations located on
                       or near the airports listed in paragraph (c)(61)(iv) of this section. Stations will be authorized on
                       a primary basis and may be used only in connection with servicing and supplying of aircraft.
                       Operation on this frequency is limited to a maximum effective radiated power (ERP) of 100
                       watts at locations within 16 km (10 miles) of the coordinates of the listed airports.

47 CFR 90.35(c)(61)(i) (enhanced display)                                                                    page 168 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(c)(61)(ii)
Private Land Mobile Radio Services

                (ii) To stations in the Industrial/Business Pool for secondary use at locations 80 km (approximately
                     50 miles) or more from the coordinates of the listed airports. Operation will be limited to a
                     maximum ERP of 300 watts.

                (iii) To stations in the Industrial/Business Pool for secondary use at locations greater than 16 km
                      (approximately 10 miles) but less than 80 km (approximately 50 miles) from the coordinates of
                      the listed airports. Operation will be limited to a maximum ERP of 10 watts. Use of this
                      frequency is restricted to the confines of an industrial complex or manufacturing yard area.
                      Stations licensed prior to April 25, 2005, may continue to operate with facilities authorized as of
                      that date.

                (iv) The airports and their respective reference coordinates are (coordinates are referenced to North
                     American Datum 1983 (NAD83)):

                                                                                                Reference coordinates
                                                     City and airport
                                                                                               N latitude    W longitude
                       Aberdeen, SD: Aberdeen Regional (ABR)                                  45°26′56.6″ 98°25′18.6″
                       Aguana, GU: Guam International (GUM)                                   13°29′00.4″ 144°47′45.5″
                                                                                                          E
                       Akron, OH: Akron-Canton Regional (CAK)                                 40°54′58.7″ 81°26′32.9″
                       Alamosa, CO: San Luis Valley Regional/Bergman Field (ALS)              37°26′05.7″ 105°51′59.6″
                       Albany, NY: Albany Int'l (ALB)                                         42°44′53.2″ 73°48′10.7″
                       Albuquerque, NM: Albuquerque International Sunport (ABQ)               35°02′24.8″ 106°36′33.1″
                       Allentown-Bethlehem, PA: Lehigh Valley Int'l (ABE)                     40°39′08.5″ 75°26′25.5″
                       Amarillo, TX: Amarillo International (AMA)                             35°13′09.7″ 101°42′21.3″
                       Anchorage, AK: Ted Stevens Anchorage International (ANC)               61°10′27.6″ 149°59′46.3″
                       Appleton, WI: Appleton Int'l (ATW)                                     44°15′26.7″ 88°31′10.1″
                       Aspen, CO: Aspen-Pitkin County/Sardy Field (ASE)                       39°13′23.4″ 106°52′07.9″
                       Atlanta, GA:
                          Atlanta International (ATL)                                         33°38′25.6″ 84°25′37.0″
                          Dekalb-Peachtree (PDK)                                              33°52′32.2″ 84°18′07.1″
                          Fulton County/Brown Field (FTY)                                     33°46′44.9″ 84°31′16.9″
                       Austin, TX: Austin Bergstrom International (AUS)                       30°11′40.3″ 97°40′11.5″
                       Bakersfield, CA: Meadows Field (BFL)                                   35°26′00.9″ 119°03′24.4″
                       Baltimore, MD: Baltimore-Washington International Thurgood Marshall    39°10′31.5″ 74°40′05.5″
                       (BWI)
                       Baton Rouge, LA: Baton Rouge Metropolitan (BTR)                        30°31′59.4″ 91°08′58.7″
                       Billings, MT: Billings Logan International (BIL)                       45°48′27.6″ 108°32′34.3″
                       Birmingham, AL: Birmingham-Shuttlesworth Int'l (BHM)                   33°33′46.6″ 86°45′12.8″
                       Bismarck, ND: Bismarck Municipal (BIS)                                 46°46′21.8″ 100°44′44.7″
                       Boise, ID: Boise Air Terminal/Gowen Field (BOI)                        43°33′52.0″ 116°13′22.0″
                       Boston, MA: Logan International (BOS)                                  42°21′51.7″ 17°00′18.7″
                       Bozeman, MT: Bozeman Yellowstone Int'l (BZN)                           45°46′36.8″ 111°09′10.8″
                       Bridgeport, CT: Sikorsky Memorial (BDR)                                41°09′48.5″ 73°07′34.2″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                                  page 169 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                                              Reference coordinates
                                                     City and airport
                                                                                            N latitude    W longitude
                       Buffalo, NY: Buffalo Niagara Int'l (BUF)                             42°56′25.9″ 78°43′55.8″
                       Burlington, VT: Burlington Int'l (BTV)                               44°28′18.7″ 73°09′11.8″
                       Cedar Rapids, IA: The Eastern Iowa (CID)                             41°53′04.5″ 91°42′39.1″
                       Charleston, SC: Charleston AFB/International (CHS)                   32°53′55.1″ 80°02′25.8″
                       Charlotte, NC: Charlotte-Douglas Int'l (CLT)                         35°12′50.4″ 80°56′35.3″
                       Chattanooga, TN: Lovell (CHA)                                        35°02′06.9″ 85°12′13.6″
                       Chicago, IL-Northwest IN:
                          Chicago Executive (PWK)                                           42°06′51.1″ 87°54′05.3″
                          South Bend Int'l (SBN)                                            41°42′32.2″ 86°19′06.5″
                          Midway (MDW)                                                      41°47′09.5″ 87°45′08.7″
                          O'Hare International (ORD)                                        41°58′46.5″ 87°54′16.1″
                          DuPage (DPA)                                                      41°54′24.8″ 88°14′54.3″
                       Cincinnati, OH: Cincinnati Municipal/Lunken Field (LUK)              39°06′12.0″ 84°25′07.0″
                       Cleveland, OH:
                          Burke Lakefront (BKL)                                             41°31′03.0″ 81°41′00.0″
                          Cuyahoga County (CGF)                                             41°33′54.5″ 81°29′10.9″
                          Hopkins International (CLE)                                       41°24′39.2″ 81°50′57.8″
                       Columbia, SC: Columbia Metropolitan (CAE)                            33°56′19.8″ 81°07′10.3″
                       Columbus, GA: Columbus (CSG)                                         32°30′58.8″ 84°56′19.9″
                       Columbus, OH:
                          John Glenn Columbus Int'l (CMH)                                   39°59′52.8″ 82°53′30.8″
                          Rickenbacker International (LCK)                                  39°48′49.5″ 82°55′40.3″
                       Corpus Christi, TX Corpus Christi International (CRP)                27°46′13.3″ 97°30′04.4″
                       Covington/Cincinnati, KY: Cincinnati/Northern Kentucky Int'l (CVG)   39°02′46.1″ 84°39′43.8″
                       Crescent City, CA: JackMcNamara Field (CEC)                          41°46′48.6″ 124°14′11.5″
                       Dallas, TX:
                          Addison (ADS)                                                     32°58′06.8″ 96°50′11.2″
                          Dallas-Ft. Worth Int'l (DFW)                                      32°53′45.4″ 97°02′13.9″
                          Dallas-Love Field (DAL)                                           32°50′49.6″ 96°51′06.4″
                          Dallas Executive (RBD)                                            32°40′51.1″ 96°52′05.5″
                       Davenport, IA:
                          Davenport Municipal (DVN)                                         41°36′37.0″ 90°35′18.0″
                          Quad City Int'l (MLI)                                             41°26′54.7″ 90°30′27.1″
                       Dayton, OH: James M. Cox Int'l (DAY)                                 39°54′08.6″ 84°13′09.8″
                       Denver, CO:
                          Centennial (APA)                                                  39°34′12.5″ 104°50′57.5″
                          Colorado Springs Municipal (COS)                                  38°48′20.9″ 104°42′00.9″
                          Rocky Mountain Metropolitan (BJC)                                 39°54′31.6″ 105°07′01.9″
                          Denver International (DEN)                                        39°51′30.3″ 104°40′01.2″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                               page 170 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                  47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                               Reference coordinates
                                                       City and airport
                                                                             N latitude   W longitude
                       Des Moines, IA: Des Moines Int'l (DSM)                41°32′05.8″ 93°39′38.5″
                       Detroit, MI:
                          Coleman A. Young Municipal (DET)                   42°24′33.1″ 83°00′35.5″
                          Detroit Metro-Wayne County (DTW)                   42°12′43.4″ 83°20′55.8″
                          Oakland County Int'l (PTK)                         42°39′54.7″ 83°25′07.4″
                          Willow Run (YIP)                                   42°14′16.5″ 83°31′49.5″
                       Duluth, MN: Duluth International (DLH)                46°50′31.5″ 92°11′37.1″
                       Durango, CO: Durango-La Plata County (DRO)            37°09′05.5″ 107°45′13.6″
                       Eagle, CO: Eagle County Regional (EGE)                39°38′33.2″ 106°55′03.7″
                       El Paso, TX: El Paso International (ELP)              31°48′24.0″ 106°22′40.1″
                       Eugene, OR: Mahlon Sweet Field (EUG)                  44°07′23.7″ 123°13′07.3″
                       Eureka, CA: Samoa Field (O33)                         40°46′51.4″ 124°12′44.2″
                       Fargo, ND: Hector International (FAR)                 46°55′09.7″ 96°48′53.9″
                       Flint, MI: Bishop Int'l (FNT)                         42°57′55.8″ 83°44′36.4″
                       Ft. Lauderdale-Hollywood, FL:
                          Ft. Lauderdale Executive (FXE)                     26°11′50.2″ 80°10′14.6″
                          Ft. Lauderdale-Hollywood Int'l (FLL)               26°04′21.3″ 80°09′09.9″
                       Ft. Myers, FL:
                          Page Field (FMY)                                   26°35′11.8″ 81°51′47.7″
                          Southwest Florida Int'l (RSW)                      26°32′10.2″ 81°45′18.6″
                       Ft. Wayne, IN: Fort Wayne International (FWA)         40°58′42.5″ 85°11′42.5″
                       Ft. Worth, TX:
                          Fort Worth Alliance (AFW)                          32°59′12.5″ 97°19′07.7″
                          Meacham Int'l (FTW)                                32°49′11.2″ 97°21′44.8″
                       Fresno, CA:
                          Fresno Chandler Executive (FCH)                    36°43′56.5″ 119°49′11.6″
                          Fresno Yosemite Int'l (FAT)                        36°46′34.3″ 119°43′05.3″
                       Gainesville, FL: Gainesville Regional (GNV)           29°41′24.2″ 82°16′18.4″
                       Grand Forks, ND: Grand Forks International (GFK)      47°56′57.3″ 97°10′34.0″
                       Grand Rapids, MI: Gerald R. Ford Int'l (GRR)          42°52′51.0″ 85°31′22.1″
                       Great Falls, MT: Great Falls International (GTF)      47°28′55.2″ 111°22′14.5″
                       Green Bay, WI: Austin Straubel Int'l (GRB)            44°29′06.3″ 88°07′46.5″
                       Greensboro, NC: Piedmont Tirad International (GSO)    36°05′51.9″ 79°56′14.3″
                       Greer, SC: Greenville-Spartanburg Int'l (GSP)         34°53′44.4″ 82°13′07.9″
                       Gunnison, CO: Gunnison-Crested Butte Regional (GUC)   38°32′02.2″ 106°55′58.9″
                       Hana, HI: Hana (HNM)                                  20°47′44.3″ 156°00′52.0″
                       Harlingen, TX: Valley International (HRL)             26°13′42.6″ 97°39′15.8″
                       Harrisburg, PA:
                          Capital City (CXY)                                 40°13′01.7″ 76°51′05.3″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                page 171 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                                                Reference coordinates
                                                      City and airport
                                                                                              N latitude   W longitude
                           Harrisburg Int'l (MDT)                                             40°11′36.6″ 76°45′48.3″
                       Hartford, CT (Windsor Locks):
                           Bradley Int'l (BDL)                                                41°56′20.0″ 72°40′59.6″
                           Hartford-Brainard (HFD)                                            41°44′10.6″ 72°39′00.8″
                       Hayden, CO: Yampa Valley (HDN)                                         40°28′52.2″ 107°13′03.6″
                       Hilo, HI: Hilo Int'l (ITO)                                             19°43′12.9″ 155°02′54.5″
                       Honolulu, HI: Daniel K. Inouye Int'l (HNL)                             21°19′07.3″ 157°55′20.7″
                       Houston, TX:
                           W.P. Hobby (HOU)                                                   29°38′43.5″ 95°16′44.0″
                           D.W. Hooks Memorial (DWH)                                          30°03′42.7″ 95°33′10.0″
                           George Bush Intercontinental (IAH)                                 29°58′49.7″ 95°20′23.0″
                       Indianapolis, IN: Indianapolis Int'l (IND)                             39°43′02.4″ 86°17′39.8″
                       Jackson Hole, WY: Jackson Hole (JAC)                                   43°36′26.4″ 110°44′15.9″
                       Jacksonville, FL:
                           Jacksonville Executive at Craig (CRG)                              30°20′10.8″ 81°30′52.0″
                           Jacksonville Int'l (JAX)                                           30°29′38.6″ 81°41′16.3″
                       Kahului, HI: Kahului (OGG)                                             20°53′55.4″ 156°25′48.9″
                       Kailula-Kona, HI: Kona Int'l at Ke-Ahole (KOA)                         19°44′19.7″ 156°02′44.2″
                       Kalamazoo, MI: Kalamazoo/Battle Creek International (AZO)              42°14′05.5″ 85°33′07.4″
                       Kalispell, MT: Glacier Park International (FCA)                        48°18′41.1″ 114°15′18.2″
                       Kansas City, MO-KS:
                           Kansas City Int'l (MCI)                                            39°17′51.4″ 94°42′50.1″
                           Charles B. Wheeler Downtown (MKC)                                  39°07′23.7″ 94°35′33.9″
                       Kauna Kakai, HI: Molokai (MKK)                                         21°09′10.4″ 157°05′46.5″
                       Knoxville, TN: McGhee Tyson (TYS)                                      35°48′44.9″ 83°59′34.3″
                       LaCrosse, WI: LaCrosse Regional (LSE)                                  43°52′46.5″ 91°15′24.6″
                       Lansing, MI: Capital Region Int'l (LAN)                                42°46′43.3″ 84°35′14.5″
                       Las Vegas, NV: McCarran Int'l (LAS)                                    36°04′49.3″ 115°09′08.4″
                       Lihue, HI: Lihue (LIH)                                                 21°58′33.5″ 159°20′20.3″
                       Lincoln, NE: Lincoln (LNK)                                             40°51′03.5″ 96°45′33.3″
                       Little Rock, AR: Bill and Hillary Clinton National/Adams Field (LIT)   34°43′48.8″ 92°13′27.3″
                       Los Angeles, CA:
                           Bob Hope (BUR)                                                     34°12′02.2″ 118°21′30.6″
                           Catalina (AVX)                                                     33°24′17.8″ 118°24′57.1″
                           Long Beach-Daugherty Field (LGB)                                   33°49′03.8″ 118°09′05.8″
                           Los Angeles Int'l (LAX)                                            33°56′33.1″ 118°24′29.1″
                           Ontario Int'l (ONT)                                                34°03′21.6″ 117°36′04.3″
                           John Wayne-Orange County (SNA)                                     33°40′32.4″ 117°52′05.6″
                       Louisville, KY: Louisville Int'l-Standiford Field (SDF)                38°10′27.8″ 85°44′09.6″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                                 page 172 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                         47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                                      Reference coordinates
                                                     City and airport
                                                                                    N latitude   W longitude
                       Lubbock, TX: Lubbock Preston Smith Int'l (LBB)               33°39′49.1″ 101°49′22.0″
                       Lynchburg, VA: Lynchburg Regional-Preston Glen Field (LYH)   37°19′36.1″ 79°12′01.6″
                       Madison, WI: Dane County Regional-Truax Field (MSN)          43°08′23.5″ 89°20′15.1″
                       Manchester, NH: Manchester (MHT)                             42°56′04.3″ 71°26′13.4″
                       Memphis, TN: Memphis Int'l (MEM)                             35°02′32.7″ 89°58′36.0″
                       Miami, FL:
                          Miami Int'l (MIA)                                         25°47′35.7″ 80°17′26.0″
                          Opa-Locka Executive (OPF)                                 25°54′25.2″ 80°16′42.2″
                          Miami Executive (TMB)                                     25°38′52.4″ 80°25′58.0″
                       Milwaukee, WI: General Mitchell Int'l (MKE)                  42°56′50.0″ 87°53′47.7″
                       Minneapolis-St. Paul, MN: Minneapolis-St. Paul Int'l (MSP)   44°52′49.9″ 93°13′00.9″
                       Minot, ND: Minot International (MOT)                         48°15′33.8″ 101°16′49.2″
                       Missoula, MT: Missoula International (MSO)                   46°54′58.7″ 114°05′26.0″
                       Mobile, AL: Mobile Regional (MOB)                            30°41′29.1″ 88°14′34.2″
                       Modesto, CA: Modesto City-County (MOD)                       37°37′32.9″ 120°57′15.9″
                       Monterey, CA: Monterey Regional (MRY)                        36°35′13.1″ 121°50′34.6″
                       Montrose, CO: Montrose Regional (MTJ)                        38°30′31.9″ 107°53′37.8″
                       Nashville, TN: Nashville Int'l (BNA)                         36°07′28.1″ 86°40′41.5″
                       New Haven, CT: Tweed-New Haven (HVN)                         41°15′50.0″ 72°53′13.6″
                       New Orleans, LA:
                          Lakefront (NEW)                                           30°02′32.7″ 90°01′41.7″
                          Louis Armstrong New Orleans Int'l (MSY)                   29°59′36.2″ 90°15′28.9″
                       Newburgh, NY: Stewart International (SWF)                    41°30′14.7″ 74°06′17.4″
                       Newport News-Hampton,VA: Newport News/Williamsburg (PHF)     37°07′54.8″ 76°29′34.8″
                       New York-Northeast NJ:
                          Republic (FRG)                                            40°43′43.6″ 73°24′48.3″
                          JFK International (JFK)                                   40°38′23.1″ 73°46′44.1″
                          LaGuardia (LGA)                                           40°46′38.1″ 73°52′21.4″
                          Long Island-McArthur (ISP)                                40°47′42.8″ 73°06′00.8″
                          Morristown Municipal (NJ) (MMU)                           40°47′57.7″ 74°24′53.5″
                          Newark Int'l (EWR)                                        40°41′32.9″ 74°10′07.2″
                          Teterboro (NJ) (TEB)                                      40°51′00.4″ 74°03′39.0″
                       Norfolk, VA: Norfolk Int'l (ORF)                             36°53′40.6″ 76°12′04.4″
                       Oklahoma City, OK:
                          Wiley Post (PWA)                                          35°32′04.4″ 97°38′49.9″
                          Will Rogers World (OKC)                                   35°23′35.1″ 97°36′02.6″
                       Omaha, NE: Eppley Airfield (OMA)                             41°18′09.1″ 95°53′39.0″
                       Orlando, FL:
                          Orlando Executive (ORL)                                   28°32′43.7″ 81°19′58.6″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                       page 173 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                           47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                                        Reference coordinates
                                                      City and airport
                                                                                      N latitude    W longitude
                          Orlando Int'l (MCO)                                         28°25′44.0″ 81°18′57.7″
                       Palm Springs, CA: Palm Springs International (PSP)             33°49′46.8″ 116°30′24.1″
                       Peoria, IL: General Wayne A. Downing Peoria Int'l (PIA)        40°39′51.3″ 89°41′35.9″
                       Philadelphia, PA-NJ:
                          Northeast Philadelphia (PNE)                                40°04′55.0″ 75°00′38.1″
                          Philadelphia Int'l (PHL)                                    39°52′19.0″ 75°14′28.1″
                       Phoenix, AZ:
                          Phoenix-Sky Harbor Int'l (PHX)                              33°26′03.0″ 112°00′29.0″
                          Scottsdale (SDL)                                            33°37′22.3″ 111°54′37.9″
                       Pittsburgh, PA:
                          Allegheny County (AGC)                                      40°21′15.9″ 79°55′48.9″
                          Pittsburgh Int'l (PIT)                                      40°29′29.3″ 80°13′58.3″
                       Portland, ME: Portland International Jetport (PWM)             43°38′46.2″ 70°18′31.5″
                       Portland, OR:
                          Portland-Hillsboro (HIO)                                    45°32′25.4″ 122°56′59.4″
                          Portland International (PDX)                                45°35′19.4″ 122°35′51.0″
                          Portland-Troutdale (TTD)                                    45°32′57.7″ 122°24′04.5″
                       Providence-Pawtucket, RI-MA:
                          North Central State (SFZ)                                   41°55′14.7″ 71°29′29.0″
                          T.F. Green State (PVD)                                      41°43′26.4″ 71°25′41.6″
                       Pueblo, CO: Pueblo Memorial (PUB)                              38°17′20.7″ 104°29′47.7″
                       Raleigh/Durham, NC: Raleigh-Durham International (RDU)         35°52′39.5″ 78°47′14.9″
                       Rapid City, SD: Rapid City Regional (RAP)                      44°02′43.2″ 103°03′26.5″
                       Reno, NV: Reno/Tahoe International (RNO)                       39°29′54.8″ 119°46′05.0″
                       Richmond, VA: Richmond International (RIC)                     37°30′18.6″ 77°19′10.8″
                       Roanoke, VA: Roanoke-Blacksburg Regional/Woodrum Field (ROA)   37°19′31.7″ 79°58′31.5″
                       Rochester, MN: Rochester International (RST)                   43°54′26.0″ 92°29′56.4″
                       Rochester, NY: Greater Rochester Int'l (ROC)                   43°07′07.9″ 77°40′20.6″
                       Sacramento, CA:
                          Sacramento Executive (SAC)                                  38°30′45.1″ 121°29′36.5″
                          Sacramento Int'l (SMF)                                      38°41′43.5″ 121°35′26.8″
                       Saginaw, MI: MBS International (MBS)                           43°31′58.5″ 84°04′46.7″
                       Saipan Isl., CQ: Francisco C. Ada/Saipan Int'l (GSN)           15°07′08.4″ 145°43′45.7″
                                                                                                  E
                       St. Louis, MO:
                          Spirit of St. Louis (SUS)                                   38°39′42.7″ 90°39′04.4″
                          Lambert-St. Louis Int'l (STL)                               38°44′51.7″ 90°21′35.9″
                       St. Petersburg, FL:
                          Albert Whitted Municipal (SPG)                              27°45′54.4″ 82°37′37.1″

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                         page 174 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                        47 CFR 90.35(c)(61)(iv)
Private Land Mobile Radio Services

                                                                                     Reference coordinates
                                                      City and airport
                                                                                   N latitude   W longitude
                          St. Petersburg Clearwater Int'l (PIE)                    27°54′38.8″ 82°41′14.9″
                       Salt Lake City, UT: Salt Lake City Int'l (SLC)              40°47′18.2″ 111°58′39.9″
                       San Antonio, TX: San Antonio Int'l (SAT)                    29°32′01.3″ 29°32′01.3″
                       San Diego, CA: San Diego Int'l (SAN)                        32°44′00.8″ 117°11′22.8″
                       San Francisco-Oakland, CA:
                          Metropolitan Oakland Int'l (OAK)                         37°43′16.7″ 122°13′14.6″
                          San Francisco Int'l (SFO)                                37°37′08.4″ 122°22′29.4″
                       San Jose, CA: Norman Y. Mineta San Jose Int'l (SJC)         37°21′42.7″ 121°55′44.4″
                       San Juan, PR: Luis Munoz (SJU)                              18°26′21.9″ 66°00′06.6″
                       Santa Barbara, CA: Santa Barbara Municipal (SBA)            34°25′34.4″ 119°50′25.3″
                       Santa Fe, NM: Santa Fe Municipal (SAF)                      35°37′00.4″ 106°05′17.3″
                       Sarasota, FL: Sarasota/Bradenton International (SRQ)        27°23′43.2″ 82°33′14.8″
                       Savanna, GA: Savanah/Hilton Head Int'l (SAV)                32°07′39.3″ 81°12′7.7″
                       Scranton, PA: Wilkes Barre/Scranton Int'l (AVP)             41°20′17.3″ 75°43′27.4″
                       Seattle, WA:
                          Boeing/King County Int'l (BFI)                           47°31′48.4″ 122°18′07.4″
                          Seattle-Tacoma Int'l (SEA)                               47°26′56.3″ 122°18′33.5″
                       Shreveport, LA:
                          Shreveport Downtown (DTN)                                32°32′24.8″ 93°44′42.1″
                          Shreveport Regional (SHV)                                32°26′47.9″ 93°49′32.2″
                       Sioux City, IA: Sioux Gateway/Colonel Bud Day Field (SUX)   42°24′09.4″ 96°23′03.7″
                       Sioux Falls, SD: Joe Foss Field (FSD)                       43°34′52.9″ 96°44′30.1″
                       South Bend, IN: South Bend Regional (SBN)                   41°42′32.2″ 86°19′06.5″
                       Spokane, WA:
                          Grant County Int'l (MWH)                                 47°12′27.5″ 119°19′12.7″
                          Spokane Int'l (GEG)                                      47°37′11.5″ 117°32′01.8″
                       Springfield, MA:
                          Westfield-Barnes Regional (BAF)                          42°09′27.8″ 72°42′56.2″
                          Westover ARB/Metropolitan (CEF)                          42°11′53.8″ 72°32′03.3″
                       Springfield, MO: Springfield-Branson National (SGF)         37°14′39.6″ 93°23′12.7″
                       Syracuse, NY: Syracuse-Hancock Int'l (SYR)                  43°06′40.3″ 76°06′22.7″
                       Tacoma, WA: Tacoma Narrows (TIW)                            47°16′04.6″ 122°34′41.2″
                       Tallahasee, FL: Tallahasee Int'l (TLH)                      30°23′47.5″ 84°21′01.2″
                       Tampa, FL: Tampa Int'l (TPA)                                27°58′31.7″ 82°31′59.7″
                       Telluride, CO: Telluride Regional (TEX)                     37°57′13.5″ 107°54′30.5″
                       Toledo, OH: Toledo Express (TOL)                            41°35′12.5″ 83°48′28.2″
                       Trenton, NJ-PA: Trenton Mercer (TTN)                        40°16′36.1″ 74°48′48.5″
                       Tucson, AZ: Tucson Int'l (TUS)                              32°06′57.9″ 110°56′27.7″
                       Tulsa, OK:

47 CFR 90.35(c)(61)(iv) (enhanced display)                                                      page 175 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(c)(62)
Private Land Mobile Radio Services

                                                                                             Reference coordinates
                                                        City and airport
                                                                                           N latitude    W longitude
                           R.L. Jones, Jr. (RVS)                                           36°02′22.7″ 95°59′04.7″
                           Tulsa Int'l (TUL)                                               36°11′54.1″ 95°53′17.7″
                        Washington, DC:
                           Dulles International (IAD)                                      38°56′40.3″ 77°27′20.9″
                           Ronald Reagan National (DCA)                                    38°51′07.5″ 77°02′15.8″
                        Waterloo, IA: Waterloo Regional (ALO)                              42°33′25.5″ 92°24′01.2″
                        West Palm Beach, FL: Palm Beach International (PBI)                26°40′59.4″ 80°05′44.1″
                        White Plains, NY: Westchester County (HPN)                         41°04′01.1″ 73°42′27.3″
                        Wichita, KS: Wichita Dwight D. Eisenhower National (ICT)           37°38′59.9″ 97°25′58.9″
                        Wilmington, DE: New Castle (ILG)                                   39°40′43.4″ 75°36′23.5″
                        Worcester, MA: Worcester Regional (ORH)                            42°16′02.4″ 71°52′32.6″
                        Youngstown-Warren, OH-PA: Youngstown-Warren Regional (YNG)         41°15′38.7″ 80°40′44.8″

                       Coordinates followed by an “E” are east longitude.

          (62) This frequency may be assigned to fixed stations in the Industrial/Business Pool in accordance with
               the provisions of § 90.261.

          (63) Unless concurrence is obtained in accordance with § 90.175(b) of this chapter from the
               Commission-certified frequency coordinator for frequencies designated for central station alarm
               operations (central station alarm frequency coordinator), this frequency may be used within the
               boundaries of urbanized areas of 200,000 or more population, defined in the United States Census of
               Population, 1960, vol. 1, table 23, page 1–50, only by persons rendering a central station commercial
               protection service within the service area of the radio station using the frequency and may be used
               only for communications pertaining to safety of life and property, and for maintenance or testing of
               the protection facilities. Central station commercial protection service is defined as an electrical
               protection and supervisory service rendered to the public from and by a central station accepted and
               certified by one or more of the recognized rating agencies, or the Underwriters Laboratories' (UL), or
               Factory Mutual System. Other stations in the Industrial/Business Pool may be licensed on this
               frequency without the central station alarm frequency coordinator's concurrence only when all base,
               mobile relay and control stations are located at least 120 km (75 miles) from the city center or
               centers of the specified urban areas of 200,000 or more population. With respect to combination
               urbanized areas containing more than one city, 120 km (75 mile) separation shall be maintained
               from each city center which is included in the urbanized area. The locations of centers of cities are
               determined from appendix, page 226, of the U.S. Commerce publication “Air Line Distance Between
               Cities in the United States.”

          (64) Persons who render a central station commercial protection service are authorized to operate fixed
               stations on this frequency for the transmission of tone or impulse signals on a co-primary basis to
               base/mobile operations. Fixed stations may be licensed as mobiles. Fixed stations used for central
               station alarm operations may use antennas mounted not more than 6.1 meters (20 feet) above a
               man-made supporting structure, including antenna structure.

                 (i)   The output power shall not exceed 30 watts (at the remote site).

47 CFR 90.35(c)(64)(i) (enhanced display)                                                               page 176 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.35(c)(64)(ii)
Private Land Mobile Radio Services

                (ii) A1D, A2D, F1D, or F2D emission may be authorized.

                (iii) Operational fixed stations authorized under this paragraph are exempt from the requirements of
                      §§ 90.137(b), 90.429(d), 90.425 and 90.433.

          (65) Licensees providing a central station commercial protection service may communicate with police or
               fire stations, or vehicles, on this frequency, and may install licensed transmitting units which operate
               on this frequency at police or fire stations, or in police or fire vehicles, if the frequency's primary use
               is in a base/mobile system for a central station commercial protection service.

          (66) Unless concurrence is obtained in accordance with section 90.175(b) of this chapter from the
               Commission-certified frequency coordinator for frequencies designated for central station alarm
               operations, this frequency may be assigned only to persons rendering a central station commercial
               protection service, which is defined in paragraph (c)(63) of this section, within the service area of the
               radio station using the frequency.

          (67) Medical telemetry operations are authorized on this frequency on a secondary basis. Medical
               telemetry operations are subject to the provisions of § 90.267(h)(2).

          (68) Each station authorized on this frequency will be classified and licensed as a mobile station. Any
               units of such a station, however, may provide the operational functions of a base station on a
               secondary basis to mobile service operations provided that the vertical separation between control
               point or ground level and the center of the radiating portion of the antenna of any units so used does
               not exceed 8 meters (approximately 25 feet). This frequency is available for assignment as follows:

                 (i)   To persons furnishing commercial air transportation service or, pursuant to § 90.179, to an
                       entity furnishing radio communications service to persons so engaged, for stations located on
                       or near the airports listed in paragraph (c)(61)(iv) of this section. Stations will be authorized on
                       a primary basis and may be used only in connection with servicing and supplying of aircraft.
                       Operation on this frequency is limited to a maximum effective radiated power (ERP) of 40 watts
                       at locations within 16 km (approximately 10 miles) of the coordinates of the listed airports.

                (ii) To stations in the Industrial/Business Pool for secondary use at locations 80 km (approximately
                     50 miles) or more from the coordinates of the listed airports. Operation will be limited to a
                     maximum ERP of 120 watts. Wide area operation will not be permitted. The area of normal, day-
                     to-day operations will be described in the application.

                (iii) To stations in the Industrial/Business Pool for secondary use at locations greater than 16 km
                      (approximately 10 miles) but less than 80 km (approximately 50 miles) from the coordinates of
                      the listed airports. Operation will be limited to a maximum ERP of 6 watts. Use of this frequency
                      is restricted to the confines of an industrial complex or manufacturing yard area. Stations
                      licensed prior to April 25, 2005, may continue to operate with facilities authorized as of that
                      date.

          (69) This frequency may be used on a secondary, non-interference basis by a hospital or health care
               institution holding a license to operate a radio station under this part to operate a medical radio
               telemetry device with an output power not to exceed 20 milliwatts without specific authorization
               from the Commission.

          (70) Subpart L of this part contains rules for assignment of frequencies in the 470–512 MHz band.

          (71) Subpart S of this part contains rules for assignment of frequencies in the 806–824/851–869 MHz
               band and for narrowband operations in the 896–901/935–940 MHz band.

47 CFR 90.35(c)(71) (enhanced display)                                                                       page 177 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(c)(72)
Private Land Mobile Radio Services

          (72) Assignment of frequencies above 928 MHz for operational-fixed stations is governed by part 101 of
               this chapter.

          (73) Frequencies in this band are available only for one-way paging operations in accordance with §
               90.494.

          (74) Available only on a shared basis with stations in other services, and subject to no protection from
               interference due to the operation of industrial, scientific, or medical (ISM) devices. In the band
               2483.5–2500 MHz, no applications for new stations or modification to existing stations to increase
               the number of transmitters will be accepted. Existing licensees as of July 25, 1985, and licensees
               whose initial applications were filed on or before July 25, 1985, are grandfathered and their
               operations are on a co-primary basis with the mobile-satellite and radiodetermination-satellite
               services, and in the segment 2495–2500 MHz, their operations are also on a co-primary basis with
               part 27 fixed and mobile except aeronautical mobile service operations.

          (75) [Reserved]

          (76) The frequencies in the band 10.55–10.68 GHz are available for Digital Termination Systems and for
               associated intermodal links in the Point-to-Point Microwave Service. No new licenses will be issued
               under this subpart but current licenses will be renewed.

          (77) All communications on this frequency must be conducted within the boundaries or confines of the
               licensee's business premises.

          (78) Base and mobile stations authorized as of April 1, 1968, may continue to be authorized for such
               operation on a secondary basis to the Maritime Mobile Service. The licensees of such stations may
               renew, modify, reinstate, or assign their licenses in those cases where such assignment
               accompanies a change of ownership of the licensee's business to the assignee, and may expand
               existing systems when using that frequency; however, they will not be authorized to establish any
               new systems.

          (79) Frequencies may be assigned in pairs with the separation between base and mobile transmit
               frequencies being 5.26 MHz. A mobile station may be assigned the frequency which would normally
               be assigned to a base station for single frequency operation. However, this single-frequency
               operation may be subject to interference that would not occur to a two-frequency system. Base or
               mobile stations located 80.5 km (50 miles) or less from the center or any urbanized area of 600,000
               or more population (U.S. Census of Population, 1970) must be operated in the half-duplex mode.

          (80) Concurrence from the Petroleum Coordinator is required only for applications for this frequency that
               request authorization for transmitters in Arkansas, Louisiana, Oklahoma, or Texas.

          (81) Concurrence from the Petroleum Coordinator is required only for applications for this frequency that
               request authorization for transmitters in Arkansas, Louisiana, Oklahoma, Oregon, Texas, or
               Washington.

          (82) After December 7, 2000 new stations will only be licensed with an authorized bandwidth not to
               exceed 11.25 kHz. Licensees authorized prior to December 7, 2000 may continue to use bandwidths
               wider than 11.25 kHz on a co-primary basis until January 1, 2005. After January 1, 2005, all stations
               operating with an authorized bandwidth greater than 11.25 kHz will be secondary to adjacent
               channel public safety interoperability operations. (See § 90.20(c)(3)).

          (83) Telemetry operations on this frequency will be authorized pursuant to § 90.267.

47 CFR 90.35(c)(83) (enhanced display)                                                                 page 178 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.35(c)(84)
Private Land Mobile Radio Services

          (84) Operation on this frequency is subject to the low power provisions of § 90.267. This frequency is
               assigned to Group A in the low power pool.

          (85) Operation on this frequency is subject to the low power provisions of § 90.267. This frequency is
               assigned to Group B in the low power pool.

          (86) Operation on this frequency is subject to the low power provisions of § 90.267. This frequency is
               assigned to Group C in the low power pool.

          (87) Operation on this frequency is subject to the low power provisions of § 90.267. This frequency is
               assigned to Group D in the low power pool.

          (88) Use of this frequency is on a secondary basis limited to 2 watts output power and subject to the
               provisions of § 90.267(h)(1), (h)(2), (h)(3) and (h)(4).

          (89) The frequency may be assigned only to entities meeting the definition of a forest product licensee
               (see § 90.7). Operations are on a secondary basis to Federal Government operations including
               experimental stations, will not exceed 150 watts output power, and are limited to the states of
               Washington, Oregon, Maine, North Carolina, South Carolina, Tennessee, Georgia, Florida, Alabama,
               Mississippi, Louisiana, and Texas (eastern portion).

          (90) As of March 25, 2007, the FCC will cease to issue licenses for new stations in the fixed and mobile
               services in the following bands: 5900–5950 kHz, 7300–7350 kHz, 9400–9500 kHz, 11600–11650
               kHz, 12050–12100 kHz, 13800–13870 kHz, and 15600–15800 kHz. As of March 29, 2009, the FCC
               will cease to issue licenses for new stations in the fixed and mobile services in the band 7350–7400
               kHz and, in the U.S. Pacific insular areas in Region 3, the band 7400–7450 kHz. Stations licensed as
               of March 25, 2007 in the bands 5900–5950 kHz, 7300–7350 kHz, 9400–9500 kHz, 11600–11650
               kHz, 12050–12100 kHz, 13800–13870 kHz, and 15600–15800 kHz and as of March 29, 2009 for the
               band 7350–7400 kHz in Region 2 and the band 7350–7450 kHz in Region 3 shall:

          (1) Be limited to communications only within the United States and its insular areas;

          (2) Not cause harmful interference to the broadcasting service;

          (3) Be limited to the minimum power needed to achieve communications; and

          (4) Take account of the seasonal use of frequencies by the broadcasting service published in accordance
          with Article 12 of the ITU Radio Regulations.

          (91) Subpart M of this part contains rules for assignment of frequencies in the 5850–5925 MHz band.

          (92) This frequency is available on a shared basis both for remote control and telemetry operations and
               for mobile repeater operations. The authorized bandwidth may not exceed 11.25 kHz.

          (93) This frequency is available on a shared basis with the Public Safety Pool for remote control and
               telemetry operations. In cases where § 90.35(c)(95) applies to this frequency, licensees seeking
               primary status for the use of this frequency for mobile repeater stations and hand-carried
               transmitters that communicate directly with mobile repeater stations must describe the area of
               normal day-to-day operations either in terms of operation in a specific county or in the terms of
               maximum distance from a geographic center (latitude and longitude) and shall be subject to the
               frequency coordination requirements of § 90.175.

47 CFR 90.35(c)(93) (enhanced display)                                                                 page 179 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.35(c)(94)
Private Land Mobile Radio Services

          (94) Mobile repeaters operating on this frequency are subject to a channel loading requirement of 50
               transmitter-receivers. Loading standards will be applied in terms of the number of units actually in
               use or to be placed in use within 8 months following authorization. A licensee will be required to
               show that an assigned frequency pair is at full capacity before it may be assigned a second or
               additional frequency. Channel capacity may be reached either by the requirements of a single
               licensee or by several users sharing a channel. Until a channel is loaded to capacity it will be
               available for assignment to other users in the same area.

          (95) The maximum effective radiated power (ERP) may not exceed 2 watts for mobile stations, and 5
               watts for mobile repeater stations and hand-carried transmitters that communicate directly with
               mobile repeater stations.

     (d) Additional frequencies available. In addition to the frequencies shown in the frequency table of this
         section, the following frequencies are available in this service. (See also § 90.253.)

           (1) Frequencies may be substituted for those available below 25 MHz in accordance with the provisions
               of § 90.263.

           (2) Frequencies in the band 73.0–74.6 MHz may be assigned to stations authorized on or before
               December 1, 1961, but no new stations will be authorized in this band, nor will expansion of existing
               systems be permitted. (See also § 90.257).

           (3) Frequencies in the 421–430 MHz band are available in the Detroit, Cleveland, and Buffalo areas in
               accordance with the rules in §§ 90.273 through 90.281.

           (4) The following frequencies are available only in Puerto Rico and the Virgin Islands. These “Base and
               Mobile” and “Mobile only” frequencies are available on a shared basis with the Public Safety Pool.
               These “Mobile only” frequencies may be assigned to a control station associated with a mobile relay
               system if it is also assigned to the associated mobile station.

                                        Base and mobile                                  Mobile only
                 159.240                                                                                    160.410
                 159.2475                                                                                  160.4175
                 159.255                                                                                    160.425
                 159.2625                                                                                  160.4325
                 159.270                                                                                    160.440
                 159.2775                                                                                  160.4475
                 159.285                                                                                    160.455
                 159.2925                                                                                  160.4625
                 159.300                                                                                    160.470
                 159.3075                                                                                  160.4775
                 159.315                                                                                    160.485
                 159.3225                                                                                  160.4925
                 159.330                                                                                    160.500
                 159.3375                                                                                  160.5075
                 159.345                                                                                    160.515
                 159.3525                                                                                  160.5225
                 159.360                                                                                    160.530

47 CFR 90.35(d)(4) (enhanced display)                                                                  page 180 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.35(d)(5)
Private Land Mobile Radio Services

                                        Base and mobile                                       Mobile only
                 159.3675                                                                                         160.5375
                 159.375                                                                                           160.545
                 159.3825                                                                                         160.5525
                 159.390                                                                                           160.560
                 159.3975                                                                                         160.5675
                 159.405                                                                                           160.575
                 159.4125                                                                                         160.5825
                 159.420                                                                                           160.590
                 159.4275                                                                                         160.5975
                 159.435                                                                                           160.605
                 159.4425                                                                                         160.6125

           (5) Low power mobile stations of 100 mw or less output power used for one-way, non-voice medical
               telemetry operations in hospitals or in medical convalescent centers are subject to the provisions of
               § 90.238.

           (6) [Reserved]

           (7) A railroad licensee, i.e., a licensee eligible for frequencies listed in § 90.35(b)(3) of this section that
               are coordinated by the railroad coordinator (LR), may operate radio units at fixed locations and in
               moving railroad locomotives/cars that transmit on the frequency 24.10 GHz, both unmodulated
               continuous wave radio signals and modulated FM digital signals for the purpose of alerting
               motorists to the presence of an approaching train. Unattended and continuous operation of such
               transmitters will be permitted without additional authorization from the Commission, provided type
               accepted equipment or equipment authorized pursuant to §§ 90.203(b)(4) and (b)(5) of this part is
               used, and all other rule provisions are satisfied.

     (e) Limitation on number of frequencies assignable. Normally only one frequency, or pair of frequencies in the
         paired frequency mode of operation, will be assigned for mobile service operations by a single applicant
         in a given area. The assignment of an additional frequency or pair of frequencies will be made only upon a
         satisfactory showing of need, except that:

           (1) Additional frequencies above 25 MHz may be assigned in connection with operation of mobile
               repeaters in accordance with § 90.247 notwithstanding this limitation.

           (2) [Reserved]

           (3) Frequencies in the 25–50 MHz, 150–170 MHz, 450–512 MHz and 902–928 MHz bands may be
               assigned for the operation of Location and Monitoring Service (LMS) systems in accordance with
               the provisions of subpart M of this part, notwithstanding this limitation.

           (4) Authorizations for multiple frequencies for geophysical operations will be granted on the frequencies
               governed by the limitations in paragraphs (c)(3) and (c)(4) of this section. However, each
               geophysical exploration party may use a maximum of four frequencies at any one time.

           (5) Authorization for more than one mobile frequency in the band 72–76 MHz will be issued
               notwithstanding this limitation.

           (6) This limitation shall not apply to paragraph (c)(1) of this section.

47 CFR 90.35(e)(6) (enhanced display)                                                                          page 181 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.35(e)(7)
Private Land Mobile Radio Services

           (7) Frequencies in the 457 and 467 MHz bands may be assigned collectively as provided by paragraph
               (c)(60) of this section notwithstanding this limitation.

     (f) Limitation on itinerant operation. Base or mobile stations being utilized in itinerant operation will be
         authorized only on base or mobile frequencies designated for itinerant operation under paragraphs (c)(10)
         or (c)(17) of this section, or on other frequencies not designated for permanent use.

     (g) The frequencies 9–490 kHz are used to operate electric utility Power Line Carrier (PLC) systems on power
         transmission lines for communications essential to the reliability and security of electric service to the
         public, in accordance with part 15 of this chapter. Any electric utility that generates, transmits, or
         distributes electrical energy for use by the general public or by the members of a cooperative organization
         may operate PLC systems and shall supply to a Federal Communications Commission/National
         Telecommunications and Information Administration recognized industry-operated entity, information on
         all existing, changes to existing, and proposed systems for inclusion in a data base. Such information
         shall include the frequency, power, location of transmitter(s), location of receivers and other technical and
         operational parameters, which would characterize the system's potential both to interfere with authorized
         radio users, and to receive harmful interference from these users. In an agreed upon format, the industry-
         operated entity shall inform the FCC and the NTIA of these system characteristics prior to implementation
         of any proposed PLC system and shall provide monthly or periodic lists with supplements of PLC
         systems. The FCC and NTIA will supply appropriate application and licensing information to the
         notification activity regarding authorized radio stations operating in the band. PLC systems in this band
         operate on a non-interference basis to radio systems assigned frequencies by the NTIA or licensed by the
         FCC and are not protected from interference due to these radio operations.

[62 FR 18874, Apr. 17, 1997]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.35, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

Effective Date Note: At 64 FR 36262, July 6, 1999, § 90.35 was amended by revising entries in the table in
paragraph (b)(3) and by adding paragraphs (c)(80) and (c)(81), effective Aug. 5, 1999. At 64 FR 50467, Sept. 17,
1999, paragraphs (c)(80), (c)(81), and the following entries in the table in paragraph (b)(3) were stayed:
153.035 MHz through 153.4025 MHz, 153.4025 MHz through 153.4625 MHz, 153.485 MHz through 153.5225 MHz,
153.545 MHz through 153.5825 MHz, 153.605 MHz through 153.6425 MHz, 153.665 MHz through 153.6675 MHz,
158.145 MHz through 158.1825 MHz, 158.205 MHz through 158.2425 MHz, 158.265 MHz through 158.3325 MHz,
158.355 MHz through 158.3775 MHz, 158.415 MHz through 158.4375 MHz, 173.250 MHz, 173.300 MHz, 173.350
MHz, 451.175 MHz, 451.225 MHz, 451.275 MHz, 451.375 MHz, 451.425 MHz, 451.475 MHz, 451.525 MHz, 451.550
MHz, 451.575 MHz, 451.600 MHz, 451.625 MHz, 451.650 MHz, 451.675 MHz, 451.700 MHz, 451.750 MHz, 452.325
MHz, 452.375 MHz, 452.425 MHz, 452.475 MHz, 452.775 MHz, 452.825 MHz, 452.875 MHz, 456.175 MHz, 456.225
MHz, 456.275 MHz, 456.375 MHz, 456.425 MHz, 456.475 MHz, 456.525 MHz, 456.550 MHz, 456.575 MHz, 456.600
MHz, 456.625 MHz, 456.650 MHz, 456.675 MHz, 456.700 MHz, 456.750 MHz, 457.325 MHz, 457.375 MHz, 457.425
MHz, 457.475 MHz, 457.775 MHz, 457.825 MHz, 457.875 MHz, 462.475 MHz, 462.525 MHz, 467.475 MHz, and
467.525 MHz

Subparts D–E [Reserved]

Subpart F—Radiolocation Service

47 CFR 90.35(g) (enhanced display)                                                                      page 182 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.101
Private Land Mobile Radio Services

§ 90.101 Scope.
The Radiolocation Service accommodates the use of radio methods for determination of direction, distance, speed,
or position for purposes other than navigation. Rules as to eligibility for licensing, permissible communications,
frequency available, and any special requirements are set forth in § 90.103. Provisions for the Location and
Monitoring Service (LMS) are contained in subpart M of this part.

[60 FR 15252, Mar. 23, 1995]

§ 90.103 Radiolocation Service.
     (a) Eligibility. The following persons are eligible for authorizations in- the Radiolocation Service to operate
         stations to determine distance, direction, speed, or position by means of radiolocation devices, for
         purposes other than navigation:

           (1) Any person engaged in a commercial, industrial, scientific, educational, or local government activity

           (2) A corporation or association that will furnish radiolocation service to other persons.

           (3) A corporation that will furnish a nonprofit radio communication service to its parent corporation, to
               another subsidiary of the same parent, or to its own subsidiary where the party to be served is
               regularly engaged in any of the eligibility activities set forth in this paragraph.

     (b) Frequencies available. The following table indicates frequencies available for assignment to stations in
         the Radiolocation Service, together with the class of station(s) to which they are normally assigned, and
         the specific assignment limitations, which are explained in paragraph (c) of this section:

                                      Radiolocation Service Frequency Table

                   Frequency or band                         Class of station(s)                  Limitation
                                                          Kilohertz
           70 to 90                           Radiolocation land or mobile                                       1
           90 to 110                          Radiolocation land                                                 2
           110 to 130                         Radiolocation land or mobile                                       1
           1705 to 1715                       ......do                                                     4, 5, 6
           1715 to 1750                       ......do                                                         5, 6
           1750 to 1800                       do                                                               5, 6
           3230 to 3400                       ......do                                                         6, 8
           4438 to 4488                       Radiolocation land                                                 3
           5250 to 5275                       ......do                                                           3
                                                          Megahertz
           13.45 to 13.55                     ......do                                                           3
           16.10 to 16.20                     ......do                                                           3
           24.45 to 24.65                     ......do                                                           3
           26.20 to 26.42                     ......do                                                           3
           41.015 to 41.665                   ......do                                                           3
           43.35 to 44.00                     ......do                                                           3

47 CFR 90.103(b) (enhanced display)                                                                       page 183 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.103(c)
Private Land Mobile Radio Services

                   Frequency or band                         Class of station(s)                Limitation
           420 to 450                         Radiolocation land or mobile                                   21
           2450 to 2500                       ......do                                                9, 22, 23
           2900 to 3100                       ......do                                                  10, 11
           3100 to 3300                       ......do                                                       12
           3550 to 3650                       ......do                                                       30
           5250 to 5350                       ......do                                                       12
           5350 to 5460                       ......do                                                  10, 14
           5460 to 5470                       ......do                                                  10, 15
           5470 to 5600                       ......do                                                  10, 11
           5600 to 5650                       ......do                                                  10, 16
           8500 to 9000                       ......do                                                  12, 17
           9000 to 9200                       ......do                                                  10, 14
           9200 to 9300                       ......do                                                       12
           9300 to 9500                       ......do                                              10, 15, 18
           9500 to 10,000                     ......do                                                       12
           10,000 to 10,500                   ......do                                              12, 13, 19
           10,500 to 10,550                   ......do                                              20, 22, 24
           13,400 to 13,750                   ......do                                                       12
           13,750 to 14,000                   ......do                                                       29
           15,700 to 17,300                   ......do
           24,050 to 24,250                   ......do                                              12, 22, 24
           33,400 to 36,000                   ......do                                                       12

     (c) Explanation of assignment limitations appearing in the frequency table of paragraph (b) of this section:

           (1) This frequency band is shared with and stations operating in this frequency band in this service are
               on a secondary basis to stations licensed in the Maritime Mobile Service.

           (2) This frequency band is shared with and stations operating in this frequency band in this service are
               on a secondary basis to the LORAN Navigation System; all operations are limited to radiolocation
               land stations in accordance with footnote US104, § 2.106 of this chapter.

           (3) Operations in this band are limited to oceanographic radars using transmitters with a peak equivalent
               isotropically radiated power (EIRP) not to exceed 25 dBW. Oceanographic radars shall not cause
               harmful interference to, nor claim protection from interference caused by, stations in the fixed or
               mobile services as specified in § 2.106, footnotes 5.132A, 5.145A, and US132A. See Resolution 612
               of the ITU Radio Regulations for international coordination requirements and for recommended
               spectrum sharing techniques.

           (4) The non-Federal Government radiolocation service in this band is on a secondary basis to stations in
               the aeronautical radionavigation service operating on 1708 kHz.

           (5) Station assignments on frequencies in this band will be made subject to the conditions that the
               maximum output power shall not exceed 375 watts and the maximum authorized bandwidth shall
               not exceed 2 kHz.

47 CFR 90.103(c)(5) (enhanced display)                                                                 page 184 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.103(c)(6)
Private Land Mobile Radio Services

           (6) Because of the operation of stations having priority on the same or adjacent frequencies in this or in
               other countries, frequency assignments in this band may either be unavailable or may be subject to
               certain technical or operational limitations. Therefore, applications for frequency assignments in this
               band shall include information concerning the transmitter output power, the type and directional
               characteristics of the antenna and the minimum hours of operation (GMT).

           (7) [Reserved]

           (8) Frequencies in this band may only be assigned to radiolocation stations which are also assigned
               frequencies in the 1605–1800 kHz band, provided the use of frequencies in this band is necessary
               for the proper functioning of the particular radiolocation system. Operations in this band are on a
               secondary basis to stations operating in accordance with the Commission's table of frequency
               allocations contained in § 2.106 of this chapter.

           (9) This band is allocated to the Radiolocation Service on a secondary basis to other fixed or mobile
               services and must accept any harmful interference that may be experienced from such services or
               from the industrial, scientific, and medical (ISM) equipment operating in accordance with part 18 of
               this chapter. In the 2483.5–2500 MHz band, no applications for new or modification to existing
               stations to increase the number of transmitters will be accepted. Existing licensees as of July 25,
               1985, or on a subsequent date following as a result of submitting an application for license on or
               before July 25, 1985, are grandfathered and their operation is co-primary with the
               Radiodetermination Satellite Service.

          (10) Speed measuring devices will not be authorized in this band.

          (11) This frequency band is shared with and is on a secondary basis to the Maritime Radionavigation
               Stations (part 80) and to the Government Radiolocation Service.

          (12) This frequency is shared with and is on a secondary basis to the Government Radiolocation Service.

          (13) Operations in this band are limited to survey operations using transmitters with a peak power not to
               exceed 5 watts into the antenna.

          (14) This frequency band is shared with and is on a secondary basis to the Aeronautical Radionavigation
               Service (part 87) and to the Government Radiolocation Service.

          (15) The non-Government Radiolocation Service in this band is secondary to the Maritime
               Radionavigation Stations (part 80), the Aeronautical Radionavigation Service (part 87) and the
               Government Radiolocation Service.

          (16) This frequency band is shared with and is on a secondary basis to the Maritime Radionavigation
               Stations (part 80) and the Government Meteorological Aids Service.

          (17) Operation in this frequency band is on a secondary basis to airborne Doppler radars at 8800 MHz.

          (18) Radiolocation installations will be coordinated with the Government Meteorological Aids Service, and
               insofar as practicable, will be adjusted to meet the needs of that service.

          (19) Operations in this band are on a secondary basis to the Amateur Radio Service (part 97). Pulsed
               emissions are prohibited.

          (20) This band is restricted to radiolocation systems using type N0N emission with a power not to exceed
               40 watts into the antenna.

47 CFR 90.103(c)(20) (enhanced display)                                                                 page 185 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.103(c)(21)
Private Land Mobile Radio Services

          (21) Non-Government radiolocation stations in the band are secondary to the Government Radiolocation
               Service, the Amateur Radio Service and the Amateur-Satellite Service. Pulse-ranging radiolocation
               stations in this band may be authorized along the shorelines of Alaska and the contiguous 48 states.
               Radiolocation stations using spread spectrum techniques may be authorized in the band 420–435
               MHz for operation within the contiguous 48 states and Alaska. Also, stations using spread spectrum
               techniques shall be limited to a maximum output power of 50 watts, shall be subject to the
               applicable technical standards in § 90.209 until such time as more definitive standards are adopted
               by the Commission and shall identify in accordance with § 90.425(c)(2). Authorizations will be
               granted on a case-by-case basis; however, operations proposed to be located within the zones set
               forth in footnote US269, § 2.106 of this chapter should not expect to be accommodated.

          (22) For frequencies 2455 MHz, 10,525 MHz, and 24,125 MHz, only unmodulated, continuous wave (NON)
               emission shall be employed. The frequency 24.10 GHz, and frequencies in the 24.20–24.25 GHz
               band may use NON emission along with an ancillary FM digital emission. The frequency 24.10 GHz
               will be used for the purpose of alerting motorists of hazardous driving conditions and the presence
               of emergency vehicles. Equipment operating on 24.10 GHz must keep the deviation of the FM digital
               signal within ±5 MHz. Equipment operating on this frequency must have a frequency stability of at
               least 2000 ppm and is exempt from the requirements of §§ 90.403(c), 90.403(f), and 90.429 of this
               part.

          (23) Devices designed to operate as field disturbance sensors on frequencies between 2450 and 2500
               MHz with a field strength equal to or less than 50,000 microvolts per meter at 30 meters, on a
               fundamental frequency, will not be licensed or certificated for use under this part. Such equipment
               must comply with the requirements for field disturbance sensors as set forth in part 15 of this
               chapter.

          (24) Devices designed to operate as field disturbance sensors on frequencies between 10,500 and 10,550
               MHz and between 24,050 and 24,250 MHz, with field strength equal to or less than 250,000
               microvolts per meter at 30 meters, on the fundamental frequency, will not be licensed or certificated
               for use under this part. Such equipment must comply with the requirements for field disturbance
               sensors as set forth in part 15 of this chapter.

         (25)–(28) [Reserved

          (29) This frequency band is shared with and is on secondary basis to the Fixed-Satellite Service and to the
               Government's Radiolocation, Space Research and Earth Exploration-Satellite Services. After January
               1, 2000, the Government's Space Research and Earth Exploration-Satellite Services shall operate on a
               co-equal secondary basis with the non-Government Radiolocation Service, except that grandfathered
               space stations in the Tracking and Data Relay Satellite System shall continue to be protected from
               harmful interference.

          (30) This frequency band is shared with and is on a secondary basis to the Government Radiolocation
               Service, the Fixed Satellite Service (part 25), and the Citizens Broadband Radio Service (part 96). No
               new licenses for Non-Federal Radiolocation Services in this band will be issued after July 23, 2015.

     (d) Other additional frequencies available. Radiolocation stations in this service may be authorized, on
         request, to use frequencies allocated exclusively to Federal Government stations, in those instances
         where the Commission finds, after consultation with the appropriate Government agency or agencies, that
         such assignment is necessary or required for coordination with Government activities.

47 CFR 90.103(d) (enhanced display)                                                                     page 186 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.111
Private Land Mobile Radio Services

[43 FR 54791, Nov. 22, 1978]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.103, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

Subpart G—Applications and Authorizations
§ 90.111 Scope.
This subpart supplements title 47, chapter 1, subpart F of the Code of Federal Regulations which establishes the
requirements and conditions under which commercial and private radio stations may be licensed and used in the
Wireless Telecommunications Services. The provisions of this subpart contain additional pertinent information for
current and prospective licensees specific to the services governed by this part 90.

[63 FR 68963, Dec. 14, 1998]

§ 90.115 Foreign government and alien eligibility.
     (a) No station authorization in the radio services governed by this part shall be granted to or held by a foreign
         government or its representative.

     (b) No station authorization in the radio services governed by this part shall be granted to or held by an entity
         providing or seeking to provide commercial mobile radio services (except such entities meeting the
         requirements of § 20.9(c) of this chapter) if such entity is:

           (1) An alien or the representative of any alien;

           (2) A corporation organized under the laws of any foreign government;

           (3) A corporation of which more than one-fifth of the capital stock is owned of record or voted by aliens
               or their representatives or by a foreign government or representative thereof, or by any corporation
               organized under the laws of a foreign country;

           (4) A corporation directly or indirectly controlled by any other corporation of which more than one-fourth
               of the capital stock is owned of record or voted by aliens, their representatives, or by a foreign
               government or representative thereof, or by any corporation organized under the laws of a foreign
               country, if the Commission finds that the public interest will be served by the refusal or revocation of
               such license.

[59 FR 59957, Nov. 21, 1994, as amended at 61 FR 55581, Oct. 28, 1996]

§ 90.119 Application requirements.
     (a) Part 1, subpart F of this chapter contains the application filing procedures for the Wireless
         Telecommunications Services, including applications for new base, fixed, or mobile station authorizations
         governed by this part.

     (b) If the control station(s) will operate on the same frequency as the mobile station, and if the height of the
         control station(s) antenna(s) will not exceed 6.1 meters (20 feet) above ground or an existing man-made
         structure (other than an antenna structure), there is no limit on the number of such stations which may be
         authorized. Appropriate items on FCC Form 601 shall be completed showing the frequency, the station

47 CFR 90.119(b) (enhanced display)                                                                      page 187 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.121
Private Land Mobile Radio Services

           class, the total number of control stations, the emission, and the output power of the highest powered
           control station. Applicants in the 470–512 MHz band must furnish the relevant information for all control
           stations.

[63 FR 68963, Dec. 14, 1998]

§ 90.121 Canadian registration.
Form 410 shall be filed by Canadian licensees desiring to operate in the United States under the terms of Article 2
and 3 of the Convention between the United States and Canada concerning operation of Certain Radio Equipment or
Stations (which entered into force May 15, 1952). This form may be obtained from the Department of
Communications, Ottawa, Canada. That department should also be consulted by U.S. licensees desiring to operate
in Canada.

§ 90.127 Submission and filing of applications.
     (a) Applications should be filed in accordance with part 1, subpart F of this chapter.

     (b) Each application shall limit its request for authorized mobile transmitters and paging receivers to:

           (1) Mobile transmitters and paging receivers that will be installed and operated immediately after
               authorization issuance.

           (2) Mobile transmitters and paging receivers for which purchase orders have already been signed and
               which will be in use within eight months of the authorization date.

     (c) All applications for modification of license and renewal of license must include the number of mobile
         transmitters and paging receivers in use on the licensed facilities.

[63 FR 68963, Dec. 14, 1998]

§ 90.129 Supplemental information to be routinely submitted with applications.
Each application under this part that is received by the Commission, through the application process outlined in part
1, subpart F, must be accompanied by the applicable information listed below:

     (a) Evidence of frequency coordination as required by § 90.175.

     (b) Description of any equipment proposed to be used if it is not approved for use under this part.

     (c) [Reserved]

     (d) Applicants proposing to share their authorized transmitters pursuant to § 90.179 shall so indicate in their
         application.

    (e)–(f) [Reserved]

     (g) The environmental assessment required by §§ 1.1307 and 1.1311 of this chapter, if applicable. If an
         application filed under this part proposes the use of one or more new or existing antenna structures that
         require registration under part 17 of this chapter, any required environmental assessment should be
         submitted pursuant to the process set forth in § 17.4(c) of this chapter rather than with the application
         filed under this part.

47 CFR 90.129(g) (enhanced display)                                                                    page 188 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.129(h)
Private Land Mobile Radio Services

     (h) Requests for authorization to communicate with foreign stations in accordance with § 90.20(b) or §
         90.417;

     (i)   Showings required in connection with the use of frequencies as specified in subpart S of this chapter.

     (j)   Any other statements or other data specifically required under special circumstances which are set forth
           in the applicable subpart of this part, by the particular form on which the application is filed or upon
           request by the Commission.

     (k) If the applicant proposes to use a multiple-licensed transmitter, he must provide the name of the owner
         and the names and call signs of any other licensees of that transmitter.

     (l)   Applicants for new land stations to be interconnected with the public switched telephone network must
           indicate on their applications that their stations will be interconnected.

     (m) Applicants requesting licenses to operate on frequencies pursuant to § 90.20(d)(6) must submit disaster
         communications plans containing the following information:

           (1) A system network/system use diagram including a showing of emergency power and methods of
               deployment to all parts of the State or insular area;

           (2) A designation of the responsible governmental authority within the State or insular area who will be
               the controlling agency for the licensee;

           (3) A schedule of proposed drills and/or exercises by the participants;

           (4) The number of frequencies in each band, and the type of emission required by the applicant;

           (5) The distances expected to be covered within that State or insular area;

           (6) The adjacent states and insular areas expected to be communicated with during a regional disaster
               or emergency;

           (7) The point of contact for emergencies involving more than one State or insular area;

           (8) The common frequency band(s) and number of frequencies in each band required for interstate
               communication, and the point(s) of contact for these adjacent States or insular areas;

           (9) The format and emission parameters of radio teletype transmissions to be used for interstate
               communications.

     (n) All applications for renewal of base/mobile station licenses by licensees who also operate wildlife
         tracking telemetry transmitters, as described in § 90.20(f)(7), must include a statement detailing the
         number of units in service, by frequency, on Public Safety Pool frequencies at the time the renewal
         application is filed.

     (o) Applicants requesting licenses to operate on frequencies pursuant to § 90.35(c)(1) must submit
         communications plans containing the following information:

           (1) A description of the communication requirement sufficient to demonstrate that no alternative to the
               link is appropriate and that there is no reasonable way to abbreviate the link;

           (2) The frequency bands and the number of frequencies necessary for the link(s);

           (3) The name and phone number of the person(s) responsible for ceasing operations of the licensee's
               stations in the event of interference; and,

47 CFR 90.129(o)(3) (enhanced display)                                                                  page 189 of 516
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                                                                                                     47 CFR 90.129(o)(4)
Private Land Mobile Radio Services

           (4) Where the link(s) provides a standby backup circuit for another communications circuit, a brief
               description of the supported circuit and its vulnerability to disruption.

(Secs. 4, 303, 307, 48 Stat., as amended, 1066, 1082, 1083; 47 U.S.C. 154, 303, 307)

[43 FR 54791, Nov. 22, 1978]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.129, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.135 Modification of license.
     (a) In addition to those changes listed in § 1.929(k) of this chapter and in accordance with § 1.947 of this
         chapter the following modifications may be made to an existing authorization without prior Commission
         approval:

           (1) Change in the number and location of station control points or of control stations operating below
               470 or above 800 MHz meeting the requirements of § 90.119(b).

           (2) Change in the number of mobile units operated by Radiolocation Service licensees.

     (b) Unless specifically exempted in § 90.175, licensees must submit a Form 601 application for modification
         to the applicable frequency coordinator for any change listed in § 1.929(c)(4) of this chapter.

[65 FR 60875, Oct. 13, 2000]

§ 90.137 Applications for operation at temporary locations.
     (a) An application for authority to operate a base or a fixed transmitter at temporary locations shall be filed in
         accordance with § 1.931 of this chapter and the following:

           (1) When one or more individual transmitters are to be operated by a licensee as a base station or as a
               fixed station at unspecified or temporary locations for indeterminate periods, such transmitters may
               be considered to comprise a single station intended to be operated at temporary locations.

           (2) The application must specify the general geographic area within which the operation will be
               confined. The area may be specified as a city, a county or counties, a state or states or other
               definable geographic area such as a specified radius around a particular city or known geographic
               site.

           (3) Applications for operation at temporary locations exceeding 180 days must be accompanied by
               evidence of frequency coordination, except that applications for operation at temporary locations
               exceeding 180 days by applicants using 220–222 MHz spectrum for geophysical telemetry
               operations need not be accompanied by evidence of frequency coordination.

     (b) When any unit or units of a base station or fixed station which are authorized for operation at temporary
         locations actually remain or are intended to remain at the same location for more than 1 year, an
         application for a separate authorization specifying the fixed location shall be made as soon as possible,
         but not later than 30 days after the expiration of the 1-year period.

     (c) The provisions of this section do not apply to the 4940–4990 MHz band.

47 CFR 90.137(c) (enhanced display)                                                                      page 190 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.138
Private Land Mobile Radio Services

[43 FR 54791, Nov. 22, 1978, as amended at 45 FR 63862, Sept. 26, 1980; 51 FR 14997, Apr. 22, 1986; 58 FR 44956, Aug. 25, 1993;
62 FR 15992, Apr. 3, 1997; 63 FR 68963, Dec. 14, 1998; 68 FR 38639, June 30, 2003]

§ 90.138 Applications for itinerant frequencies.
An application for authority to conduct an itinerant operation in the Industrial/Business Pool must be restricted to
use of itinerant frequencies or other frequencies not designated for permanent use and need not be accompanied
by evidence of frequency coordination. Users should be aware that no interference protection is provided from other
itinerant operations.

[72 FR 35194, June 27, 2007]

§ 90.149 License term.
     (a) Except as provided in subpart R of this part, licenses for stations authorized under this part will be issued
         for a term not to exceed ten (10) years from the date of the original issuance or renewal.

     (b) Non-exclusive geographic area licenses for DSRCS Roadside Units (RSUs) under subpart M of this part in
         the 5895–5925 MHz band will be issued for a term not to exceed ten years from the date of original
         issuance or renewal. The registration dates of individual RSUs (see § 90.375) will not change the overall
         renewal period of the single license.

[43 FR 54791, Nov. 22, 1978, as amended at 49 FR 36376, Sept. 17, 1984; 56 FR 19602, Apr. 29, 1991; 56 FR 65858, Dec. 19, 1991;
59 FR 59958, Nov. 21, 1994; 62 FR 18924, Apr. 17, 1997; 63 FR 68964, Dec. 14, 1998; 65 FR 60875, Oct. 13, 2000; 69 FR 46442,
Aug. 3, 2004; 70 FR 61061, Oct. 20, 2005; 78 FR 25175, Apr. 29, 2013; 86 FR 23296, May 3, 2021]

§ 90.155 Time in which station must be placed in operation.
     (a) All stations authorized under this part, except as provided in §§ 90.528, 90.529, 90.629, 90.631(f), 90.665,
         and 90.685 must be placed in operation within twelve (12) months from the date of grant or the
         authorization cancels automatically and must be returned to the Commission.

     (b) A local government entity in the Public Safety Pool, applying for any frequency in this part, may also seek
         extended implementation authorization pursuant to § 90.629.

     (c) For purposes of this section, a base station is not considered to be placed in operation unless at least one
         associated mobile station is also placed in operation. See also §§ 90.633(d) and 90.631(f).

     (d) Multilateration LMS EA-licensees, authorized in accordance with § 90.353, must construct and place in
         operation a sufficient number of base stations that utilize multilateration technology (see paragraph (e) of
         this section) to provide multilateration location service to one-third of the EA's population within five years
         of initial license grant, and two-thirds of the population within ten years. Licensees may, in the alternative,
         provide substantial service to their licensed area within the appropriate five- and ten-year benchmarks. In
         demonstrating compliance with the construction and coverage requirements, the Commission will allow
         licensees to individually determine an appropriate field strength for reliable service, taking into account
         the technologies employed in their system design and other relevant technical factors. At the five- and
         ten-year benchmarks, licensees will be required to file a map and FCC Form 601 showing compliance with
         the coverage requirements (see § 1.946 of this chapter).

47 CFR 90.155(d) (enhanced display)                                                                             page 191 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.155(e)
Private Land Mobile Radio Services

     (e) A multilateration LMS station will be considered constructed and placed in operation if it is built in
         accordance with its authorized parameters and is regularly interacting with one or more other stations to
         provide location service, using multilateration technology, to one or more mobile units. Specifically, LMS
         multilateration stations will only be considered constructed and placed in operation if they are part of a
         system that can interrogate a mobile, receive the response at 3 or more sites, compute the location from
         the time of arrival of the responses and transmit the location either back to the mobile or to a subscriber's
         fixed site.

     (f) For purposes of this section, a station licensed to provide commercial mobile radio service is not
         considered to have commenced service unless it provides service to at least one unaffiliated party.

     (g) Application for extension of time to commence service may be made on FCC Form 601. Extensions of
         time must be filed prior to the expiration of the construction period. Extensions will be granted only if the
         licensee shows that the failure to commence service is due to causes beyond its control. No extensions
         will be granted for delays caused by lack of financing, lack of site availability, for the assignment or
         transfer of control of an authorization, or for failure to timely order equipment. If the licensee orders
         equipment within 90 days of the license grant, a presumption of due diligence is created.

     (h) An application for modification of an authorization (under construction) at the existing location does not
         extend the initial construction period. If additional time to commence service is required, a request for
         such additional time must be submitted on FCC Form 601, either separately or in conjunction with the
         submission of the FCC Form 601 requesting modification.

     (i)   DSRCS Roadside Units (RSUs) under subpart M of this part in the 5895–5925 MHz band must be placed
           in operation within 12 months from the effective date of registration (see § 90.375) or the authority to
           operate the RSUs cancels automatically (see § 1.955 of this chapter). Such registration date(s) do not
           change the overall renewal period of the single license. Licensees must notify the Commission in
           accordance with § 1.946 of this chapter when registered units are placed in operation within their
           construction period.

[65 FR 60875, Oct. 13, 2000, as amended at 68 FR 38639, June 30, 2003; 69 FR 46443, Aug. 3, 2004; 69 FR 75172, Dec. 15, 2004;
71 FR 52749, Sept. 7, 2006; 72 FR 48859, Aug. 24, 2007; 86 FR 23296, May 3, 2021; 88 FR 12570, Feb. 28, 2023]

§ 90.159 Temporary and conditional permits.
     (a) An applicant for a license under this part (other than a commercial mobile radio license) utilizing an
         already licensed facility may operate the radio station(s) for a period of up to one hundred eighty (180)
         days after submitting a Form 601 application for a station license in accordance with § 90.127 of this
         part, provided that all the antennas employed by control stations are 6.1 meters (20 feet) or less above
         ground or 6.1 meters (20 feet) or less above a man-made structure other than an antenna tower to which
         it is affixed. When required by § 90.175 of this part, applications must be accompanied by evidence of
         frequency coordination. The temporary operation of stations, other than mobile stations within the
         Canadian coordination zone is limited to stations with a maximum of 5 watts effective radiated power and
         a maximum antenna height of 6.1 meters (20 ft) above average terrain.

     (b) An applicant proposing to operate a new land mobile radio station or modify an existing station below 470
         MHz or in the 769–775/799–805 MHz band, 806–824/851–866 MHz band, or the one-way paging
         929–930 MHz band (other than a commercial mobile radio service applicant or licensee on these bands)
         that is required to submit a frequency coordination recommendation pursuant to paragraphs (b) through
         (h) of § 90.175 of this part may operate the proposed station during the pendency of its application for a

47 CFR 90.159(b) (enhanced display)                                                                            page 192 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.159(b)(1)
Private Land Mobile Radio Services

           period of up to one hundred eighty (180) days upon the filing of a properly completed formal Form 601
           application that complies with § 90.127 of this part if the application is accompanied by evidence of
           frequency coordination in accordance with § 90.175 of this part and provided that the following
           conditions are satisfied:

           (1) The proposed station location is west of Line C as defined in § 90.7, and (for applicants proposing to
               operate below 470 MHz or in the 769–775/799–805 MHz band or the 806–824/851–866 MHz
               band) south of Line A as defined in § 90.7.

           (2) The proposed antenna structure has been previously studied by the Federal Aviation Administration
               and determined to pose no hazard to aviation safety as required by § 17.4 of the Commission's
               Rules; or the proposed antenna or tower structure does not exceed 6.1 meters (20 feet) above
               ground level or above an existing man-made structure (other than an antenna structure), if the
               antenna or tower has not been previously studied by the Federal Aviation Administration and cleared
               by the FCC.

           (3) The grant of the application does not require a waiver of the Commission's Rules.

           (4) The applicant has determined that the proposed facility will not significantly affect the environment
               as defined in § 1.1307.

           (5) The applicant has determined that the proposed station affords the level of protection to radio quiet
               zones and radio receiving facilities as specified in § 1.924 of this chapter.

           (6) The applicant has submitted an application to the Commission stating the frequency the applicant
               intends to use and that the frequency coordination requirements specified in § 90.175 for selection
               and use of this frequency have been met and a minimum of ten business days has passed between
               submission of the application to the Commission and the onset of operation.

     (c) An applicant proposing to operate an itinerant station or an applicant seeking the assignment of
         authorization or transfer of control for an existing station below 470 MHz or in the 769–775/799–805
         MHz, the 806–824/851–866 MHz band, or the one-way paging 929–930 MHz band (other than a
         commercial mobile radio service applicant or licensee on these bands) may operate the proposed station
         during the pendency of its application for a period of up to one hundred eighty (180) days upon the filing
         of a properly completed formal Form 601 application that complies with § 90.127 of this part. Conditional
         authority ceases immediately if the application is dismissed by the Commission. All other categories of
         applications listed in § 90.175 of this part that do not require evidence of frequency coordination are
         excluded from the provisions of this section.

     (d) Conditional authorization does not prejudice any action the Commission may take on the subject
         application. Conditional authority is accepted with the express understanding that such authority may be
         modified or canceled by the Commission at any time without hearing if, in the Commission's discretion,
         the need for such action arises. Consistent with § 90.175(g) of this part, the applicant assumes all risks
         associated with operation under conditional authority, the termination or modification of conditional
         authority, or the subsequent dismissal or denial of its application. Authority reverts back to the original
         licensee if an assignee or transferee's conditional authority is canceled.

     (e) The transmissions of new stations operating pursuant to conditional authority shall be identified by a
         temporary call sign consisting of the prefix “WT” followed by the applicant's local seven digit business
         telephone number as provided in § 2.302. Transmissions by applicants for the modification, assignment
         of authorization or transfer of control of an existing station shall be identified by the station's call sign.

47 CFR 90.159(e) (enhanced display)                                                                       page 193 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 90.165
Private Land Mobile Radio Services

[51 FR 14997, Apr. 22, 1986, as amended at 54 FR 50239, Dec. 5, 1989; 58 FR 44956, Aug. 25, 1993; 58 FR 62291, Nov. 26, 1993;
59 FR 59959, Nov. 21, 1994; 62 FR 18924, Apr. 17, 1997; 63 FR 68964, Dec. 14, 1998; 69 FR 17959, Apr. 6, 2004; 83 FR 61095, Nov.
27, 2018]

        SPECIAL RULES GOVERNING FACILITIES USED TO PROVIDE COMMERCIAL MOBILE RADIO SERVICES

Source: 59 FR 59959, Nov. 21, 1994; 63 FR 68964, Dec. 14, 1998, unless otherwise noted.

           Note: The following rules (§§ 90.165 through 90.169) govern applications, licensing, and operation
           of radio facilities in the 220–222 MHz (subpart T), Business Radio (subpart D), 929–930 MHz
           Paging (subpart P), and Specialized Mobile Radio (subpart S) services that are used to provide
           commercial mobile radio services (see §§ 20.3 and 20.9 of this chapter). Compliance with the
           rules relating to applications and licensing of facilities on paging-only channels in the Business
           Radio Service (see § 90.75(c)(10)) and 929–930 MHz paging channels (see § 90.494(a),(b)) is not
           required prior to August 10, 1996. Compliance with § 90.168 is also not required prior to August
           10, 1996 for reclassified commercial mobile radio service providers who are to be regulated as
           private carriers until August 10, 1996 as provided in the Second Report and Order in GN Docket No.
           93–252, 9 FCC Rcd 2348 (1994), paras. 280–284. The licensing and operation of radio facilities in
           the 220–222 MHz (subpart T), Business Radio (subpart D), 929–930 MHz Paging (subpart P), and
           Specialized Mobile Radio (subpart S) services that are used to provide commercial mobile radio
           services are also subject to rules elsewhere in this part that apply generally to Private Land Mobile
           Radio Services. In the case of any conflict between rules set forth in §§ 90.165 through 90.169
           and other rules in this part, §§ 90.165 through 90.169 apply. 14–23. New §§ 90.165 through
           90.169 are added to subpart G to read as follows:

§ 90.165 Procedures for mutually exclusive applications.
Mutually exclusive commercial mobile radio service applications are processed in accordance with part 1 of this
chapter and with the rules in this section, except for mutually exclusive applications for licenses in the 220–222
MHz service and the 929–930 MHz Paging service, which are processed in accordance with the rules in subpart P
and subpart T of this part.

Two or more pending applications are mutually exclusive if the grant of one application would effectively preclude
the grant of one or more of the others under Commission rules governing the services involved.

     (a) Separate applications. Any applicant that files an application knowing that it will be mutually exclusive
         with one or more applications should not include in the mutually exclusive application a request for other
         channels or facilities that would not, by themselves, render the application mutually exclusive with those
         other applications. Instead, the request for such other channels or facilities should be filed in a separate
         application.

     (b) Filing groups. Pending mutually exclusive applications are processed in filing groups. Mutually exclusive
         applications in a filing group are given concurrent consideration. The Commission may dismiss as
         defective (pursuant to § 1.934 of this chapter) any mutually exclusive application(s) whose filing date is

47 CFR 90.165(b) (enhanced display)                                                                             page 194 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.165(b)(1)
Private Land Mobile Radio Services

           outside of the date range for inclusion in the filing group. The types of filing groups used in day-to-day
           application processing are specified in paragraph (c)(3) of this section. A filing group is one of the
           following types:

           (1) Same-day filing group. A same-day filing group comprises all mutually exclusive applications whose
               filing date is the same day, which is normally the filing date of the first-filed applications(s).

           (2) Thirty-day notice and cut-off filing group. A 30-day notice and cut-off filing group comprises mutually
               exclusive applications whose filing date is no later than thirty (30) days after the date of the Public
               Notice listing the first-filed application(s) (according to the filing dates) as acceptable for filing.

           (3) Window filing group. A window filing group comprises mutually exclusive applications whose filing
               date is within an announced filing window. An announced filing window is a period of time between
               and including two specific dates, which are the first and last dates on which applications (or
               amendments) for a particular purpose may be accepted for filing. In the case of a one-day filing
               window, the two dates are the same. The dates are made known to the public in advance.

     (c) Procedures. Generally, the Commission may grant one application in a filing group of mutually exclusive
         applications and dismiss the other application(s) in the filing group that are excluded by the grant,
         pursuant to § 1.935 of this chapter.

           (1) Selection methods. In selecting the application to grant, the Commission may use competitive
               bidding, random selection, or comparative hearings, depending on the type of applications involved.

           (2) Dismissal of applications. The Commission may dismiss any application in a filing group that is
               defective or otherwise subject to dismissal under § 1.934 of this chapter, either before or after
               employing selection procedures.

           (3) Type of filing group used. Except as otherwise provided in this part, the type of filing group used in
               processing of two or more mutually exclusive applications depends on the purpose(s) of the
               applications.

                 (i)   If any mutually exclusive application filed on the earliest filing date is an application for
                       modification and none of the mutually exclusive applications is a timely-filed application for
                       renewal, a same-day filing group is used.

                (ii) If any mutually exclusive application filed on the earliest filing date is an application for
                     modification, a same-day filing group is used.

           (4) Disposition. If there is only one application in any type of filing group, the Commission may grant that
               application and dismiss without prejudice any mutually exclusive applications not in the filing group.
               If there is more than one mutually exclusive application in a filing group, the Commission disposes of
               these applications as follows:

                 (i)   Applications in a 30-day notice and cut-off filing group.

                       (A) If all of the mutually exclusive applications in a 30-day notice and cut-off filing group are
                           applications for initial authorization, the Commission administers competitive bidding
                           procedures in accordance with subpart Q of part 1 of this chapter. After such procedures,
                           the application of the successful bidder may be granted and the other applications may be
                           dismissed without prejudice.

47 CFR 90.165(c)(4)(i)(A) (enhanced display)                                                                 page 195 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.165(c)(4)(i)(B)
Private Land Mobile Radio Services

                       (B) If any of the mutually exclusive applications in a 30-day notice and cut-off filing group is an
                           application for modification or an application for facilities, the Commission may attempt
                           to resolve the mutual exclusivity by facilitating a settlement between the applicants. If a
                           settlement is not reached within a reasonable time, the Commission may designate all
                           applications in the filing group for comparative consideration in a hearing. In this event,
                           the result of the hearing disposes all of the applications in the filing group.

                (ii) Applications in a same-day filing group. If there are two or more mutually exclusive applications
                     in a same-day filing group, the Commission may attempt to resolve the mutual exclusivity by
                     facilitating a settlement between the applicants. If a settlement is not reached within a
                     reasonable time, the Commission may designate all applications in the filing group for
                     comparative consideration in a hearing. In this event, the result of the hearing disposes all of
                     the applications in the filing group.

                (iii) Applications in a window filing group. Applications in a window filing group are processed in
                      accordance with the procedures for a 30-day notice and cut-off filing group in paragraph
                      (c)(4)(ii) of this section.

     (d) Terminology. For the purposes of this section, terms have the following meanings:

           (1) The “filing date” of an application is the date on which that application was received in a condition
               acceptable for filing or the date on which the most recently filed major amendment to that
               application was received, whichever is later, excluding major amendments in the following
               circumstances:

                 (i)   The major amendment reflects only a change in ownership or control found by the Commission
                       to be in the public interest;

                (ii) The major amendment as received is defective or otherwise found unacceptable for filing; or

                (iii) The application being amended has been designated for hearing and the Commission or the
                      presiding officer accepts the major amendment.

           (2) An “application for initial authorization” is:

                 (i)   Any application requesting an authorization for a new system or station;

                (ii) Any application requesting authorization for an existing station to operate on an additional
                     channel, unless the additional channel is for paired two-way radiotelephone operation, is in the
                     same frequency range as the existing channel(s), and will be operationally integrated with the
                     existing channel(s) such as by trunking; or

                (iii) any application requesting authorization for a new transmitter at a location more than 2
                      kilometers (1.2 miles) from any existing transmitters of the applicant licensee on the requested
                      channel or channel block.

[59 FR 59959, Nov. 21, 1994, as amended at 63 FR 68964, 68965, Dec. 14, 1998; 82 FR 41548, Sept. 1, 2017]

§ 90.168 Equal employment opportunities.
Commercial Mobile Radio Services licensees shall afford equal opportunity in employment to all qualified persons,
and personnel must not be discriminated against in employment because of sex, race, color, religion, or national
origin.

47 CFR 90.168 (enhanced display)                                                                               page 196 of 516
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                                                                                                          47 CFR 90.168(a)
Private Land Mobile Radio Services

     (a) Equal employment opportunity program. Each licensee shall establish, maintain, and carry out a positive
         continuing program of specific practices designed to assure equal opportunity in every aspect of
         employment policy and practice.

           (1) Under the terms of its program, each licensee shall:

                 (i)   Define the responsibility of each level of management to insure a positive application and
                       vigorous enforcement of the policy of equal opportunity, and establish a procedure to review
                       and control managerial and supervisory performance.

                (ii) Inform its employees and recognized employee organizations of the positive equal employment
                     opportunity policy and program and enlist their cooperation.

                (iii) Communicate its equal employment opportunity policy and program and its employment needs
                      to sources of qualified applicants without regard to sex, race, color, religion or national origin,
                      and solicit their recruitment assistance on a continuing basis.

                (iv) Conduct a continuing campaign to exclude every form of prejudice or discrimination based
                     upon sex, race, color, religion, or national origin, from the licensee's personnel policies and
                     practices and working conditions.

                (v) Conduct a continuing review of job structure and employment practices and adopt positive
                    recruitment, training, job design and other measures needed in order to insure genuine equality
                    of opportunity to participate fully in all organizational units, occupations and levels of
                    responsibility.

           (2) The program must reasonably address specific concerns through policies and actions as set forth in
               this paragraph, to the extent that they are appropriate in consideration of licensee size, location and
               other factors.

                 (i)   To assure nondiscrimination in recruiting.

                       (A) Posting notices in the licensee's offices informing applicants for employment of their
                           equal employment rights and their right to notify the Equal Employment Opportunity
                           Commission (EEOC), the Federal Communications Commission (Commission), or other
                           appropriate agency. Where a substantial number of applicants are Spanish-surnamed
                           Americans, such notice should be posted in both Spanish and English.

                       (B) Placing a notice in bold type on the employment application informing prospective
                           employees that discrimination because of sex, race, color, religion, or national origin is
                           prohibited, and that they may notify the EEOC, the Commission, or other appropriate
                           agency if they believe they have been discriminated against.

                       (C) Placing employment advertisements in media which have significant circulation among
                           minority groups in the recruiting area.

                       (D) Recruiting through schools and colleges with significant minority group enrollments.

                       (E) Maintaining systematic contacts with minority and human relations organizations, leaders
                           and spokespersons to encourage referral of qualified minority or female applicants.

                       (F) Encouraging present employees to refer minority or female applicants.

47 CFR 90.168(a)(2)(i)(F) (enhanced display)                                                               page 197 of 516
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                                                                                                 47 CFR 90.168(a)(2)(i)(G)
Private Land Mobile Radio Services

                      (G) Making known to the appropriate recruitment sources in the employer's immediate area
                          that qualified minority members are being sought for consideration whenever the licensee
                          hires.

                (ii) To assure nondiscrimination in selection and hiring.

                      (A) Instructing employees of the licensee who make hiring decisions that all applicants for all
                          jobs are to be considered without discrimination.

                      (B) Where union agreements exist, cooperating with the union or unions in the development of
                          programs to assure qualified minority persons or females of equal opportunity for
                          employment, and including an effective nondiscrimination clause in new or renegotiated
                          union agreements.

                      (C) Avoiding use of selection techniques or tests that have the effect of discriminating against
                          minority groups or females.

                (iii) To assure nondiscriminatory placement and promotion.

                      (A) Instructing employees of the licensee who make decisions on placement and promotion
                          that minority employees and females are to be considered without discrimination, and that
                          job areas in which there is little or no minority or female representation should be reviewed
                          to determine whether this results from discrimination.

                      (B) Giving minority groups and female employees equal opportunity for positions which lead
                          to higher positions. Inquiring as to the interest and skills of all lower-paid employees with
                          respect to any of the higher-paid positions, followed by assistance, counseling, and
                          effective measures to enable employees with interest and potential to qualify themselves
                          for such positions.

                      (C) Reviewing seniority practices to insure that such practices are nondiscriminatory and do
                          not have a discriminatory effect.

                      (D) Avoiding use of selection techniques or tests that have the effect of discriminating against
                          minority groups or females.

                (iv) to assure nondiscrimination in other areas of employment practices.

                      (A) Examining rates of pay and fringe benefits for present employees with equivalent duties
                          and adjusting any inequities found.

                      (B) Providing opportunity to perform overtime work on a basis that does not discriminate
                          against qualified minority groups or female employees.

     (b) EEO statement. Each licensee having sixteen (16) or more full-time employees shall file with the
         Commission, no later than May 31st following the grant of that licensee's first Commercial Mobile Radio
         Services authorization, a statement describing fully its current equal employment opportunity program,
         indicating specific practices to be followed in order to assure equal employment opportunity on the basis
         of sex, race, color, religion, or national origin in such aspects of employment practices as regards
         recruitment, selection, training, placement, promotion, pay, working conditions, demotion, layoff, and
         termination. Any licensee having sixteen (16) or more full-time employees that changes its existing equal
         employment opportunity program shall file with the Commission, no later than May 31st thereafter, a
         revised statement reflecting the change(s).

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                                                                                                        47 CFR 90.168(c)
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           Note: Commercial mobile radio service licensees having sixteen (16) or more full-time employees
           that do not have a current EEO statement on file with the Commission as of January 2, 1995, must
           file the statement required by this paragraph no later than May 31, 1995.

     (c) Report of complaints filed against licensees. Each licensee, regardless of how many employees it has,
         shall submit an annual report to the Commission no later than May 31st of each year indicating whether
         any complaints regarding violations by the licensee or equal employment provisions of Federal, State,
         Territorial, or local law have been filed before anybody having competent jurisdiction.

           (1) The report should state the parties involved, the date filing, the courts or agencies before which the
               matters have been heard, the appropriate file number (if any), and the respective disposition or
               current status of any such complaints.

           (2) Any licensee who has filed such information with the EEOC may file a notification of such filing with
               the Commission in lieu of a report.

     (d) Complaints of violations of Equal Employment Programs. Complaints alleging employment discrimination
         against a common carrier licensee are considered by the Commission in the following manner:

           (1) If a complaint raising an issue of discrimination is received against a licensee who is within the
               jurisdiction of the EEOC, it is submitted to that agency. The Commission maintains a liaison with that
               agency that keeps the Commission informed of the disposition of complaints filed against common
               carrier licensees.

           (2) Complaints alleging employment discrimination against a common carrier licensee who does not fall
               under the jurisdiction of the EEOC but is covered by appropriate enforceable State law, to which
               penalties apply, may be submitted by the Commission to the respective State agency.

           (3) Complaints alleging employment discrimination against a common carrier licensee who does not fall
               under the jurisdiction of the EEOC or an appropriate State law, are accorded appropriate treatment by
               the Commission.

           (4) The Commission will consult with the EEOC on all matters relating to the evaluation and
               determination of compliance by the common carrier licensees with the principles of equal
               employment as set forth herein.

           (5) Complaints indicating a general pattern of disregard of equal employment practices which are
               received against a licensee that is required to file an employment report to the Commission under §
               1.815(a) of this chapter are investigated by the Commission.

     (e) Commission records. A copy of every annual employment report, equal employment opportunity program
         statement, reports on complaints regarding violation of equal employment provisions of Federal, State,
         Territorial, or local law, and copies of all exhibits, letters, and other documents filed as part thereof, all
         amendments thereto, all correspondence between the licensee and the Commission pertaining to the
         reports after they have been filed and all documents incorporated therein by reference, are open for public
         inspection at the offices of the Commission.

     (f) Licensee records. Each licensee required to file annual employment reports (pursuant to § 1.815(a) of this
         chapter), equal employment opportunity program statements, and annual reports on complaints regarding
         violations of equal employment provisions of Federal, State, Territorial, or local law shall maintain for
         public inspection a file containing a copy of each such report and copies of all exhibits, letters, and other

47 CFR 90.168(f) (enhanced display)                                                                      page 199 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.169
Private Land Mobile Radio Services

           documents filed as part thereto, all correspondence between the licensee and the Commission pertaining
           to the reports after they have been filed and all documents incorporated therein by reference. The
           documents must be retained for a period of two (2) years.

§ 90.169 Construction prior to grant of application.
Applicants may construct facilities prior to grant of their applications, subject to the provisions of this section, but
must not operate such facilities until the Commission grants an authorization. If the conditions stated in this
section are not met, applicants must not begin to construct facilities.

     (a) When applicants may begin construction. An applicant may begin construction of a facility thirty-five (35)
         days after the date of the Public Notice listing the application for that facility as acceptable for filing.

     (b) Notification to stop. If the Commission for any reason determines that construction should not be started
         or should be stopped while an application is pending, and so notifies the applicant, orally (followed by
         written confirmation) or in writing, the applicant must not begin construction or, if construction has begun,
         must stop construction immediately.

     (c) Assumption of risk. Applicants that begin construction pursuant to this section before receiving an
         authorization do so at their own risk and have no recourse against the United States for any losses
         resulting from:

           (1) Applications that are not granted;

           (2) Errors or delays in issuing Public Notices;

           (3) Having to alter, relocate, or dismantle the facility; or

           (4) Incurring whatever costs may be necessary to bring the facility into compliance with applicable laws,
               or Commission rules and orders.

     (d) Conditions. Except as indicated, all pre-grant construction is subject to the following conditions:

           (1) The application is not mutually exclusive with any other application;

           (2) No petitions to deny the application have been filed;

           (3) The application does not include a request for a waiver of one or more Commission rules;

           (4) For any construction or alteration that would exceed the requirements of § 17.7 of this chapter, the
               licensee has notified the appropriate Regional Office of the Federal Aviation Administration (FAA
               Form 7460–1), filed a request for antenna height clearance and obstruction marking and lighting
               specifications (FCC Form 854) with the Commission;

           (5) The applicant has indicated in the application that the proposed facility would not have a significant
               environmental effect, in accordance with §§ 1.1301 through 1.1319 of this chapter; and,

           (6) Under applicable international agreements and rules in this part, individual coordination of the
               proposed channel assignment(s) with a foreign administration is not required.

Subpart H—Policies Governing the Assignment of Frequencies

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                                                                                                         47 CFR 90.171
Private Land Mobile Radio Services

§ 90.171 Scope.
This subpart contains detailed information concerning the policies under which the Commission assigns
frequencies for the use of licensees under this part, frequency coordination procedures, and procedures under
which licensees may cooperatively share radio facilities.

§ 90.173 Policies governing the assignment of frequencies.
     (a) Except as indicated in paragraph (j) of this section, the frequencies which ordinarily may be assigned to
         stations in the services governed by this part are listed in subparts B, C and F of this part. Except as
         otherwise specifically provided in this part, frequencies assigned to land mobile stations are available on
         a shared basis only and will not be assigned for the exclusive use of any licensee.

     (b) All applicants and licensees shall cooperate in the selection and use of frequencies in order to reduce
         interference and make the most effective use of the authorized facilities. Licensees of stations suffering
         or causing harmful interference are expected to cooperate and resolve this problem by mutually
         satisfactory arrangements. If the licensees are unable to do so, the Commission may impose restrictions
         including specifying the transmitter power, antenna height, or area or hours of operation of the stations
         concerned. Further the use of any frequency at a given geographical location may be denied when, in the
         judgment of the Commission, its use in that location is not in the public interest; the use of any frequency
         may be restricted as to specified geographical areas, maximum power, or such other operating conditions,
         contained in this part or in the station authorization.

     (c) Frequencies assigned to Federal Government radio stations by the National Telecommunications and
         Information Administration may be authorized under the provisions set forth in § 2.102(c) of this chapter.

     (d) The radio facilities authorized under this part are intended for use in connection with and as an adjunct to
         the primary governmental or business activities of the licensee.

     (e) Persons requesting authority to operate in the band 25–50 MHz should recognize that this band is shared
         with various services in other countries and that harmful interference may be caused by the propagation
         of signals in this band from distant stations. No protection from such harmful interference generally can
         be expected.

     (f) Applications for stations in the 150–174 MHz and 421–512 MHz bands for operation on frequencies 15
         kHz or less removed from existing stations in the same geographic area will be granted based upon a
         recommendation from the applicable frequency coordinator as specified in §§ 90.20(c)(2) and
         90.35(b)(2).

     (g) In the states of Alaska and Hawaii, and in areas outside the continental limits of the United States and the
         adjacent waters, the frequencies above 150.8 MHz which are listed elsewhere in this part as available for
         assignment to base stations or mobile stations in the Industrial/Business Pool are also available for
         assignment to operational fixed stations in the Industrial/Business Pool on a secondary basis.

     (h) In the Public Safety Pool, base stations may be authorized to operate on a secondary basis on frequencies
         below 450 MHz which are available to mobile stations.

     (i)   In the 450–470 MHz band, the frequencies are ordinarily assigned in pairs, with the mobile station
           transmit frequency 5 MHz above the paired base station transmit frequency. In the 470–512 MHz band,
           the frequencies are ordinarily assigned in pairs with the mobile station transmit frequency 3 MHz above
           the paired base station transmit frequency. In the Industrial/Business Pool, in the 150 MHz band, the
           frequencies subject to § 90.35(c)(6) may be assigned in pairs with the separation between base and

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                                                                                                       47 CFR 90.173(j)
Private Land Mobile Radio Services

           mobile frequencies being 5.26 MHz. A mobile station may be assigned the frequency which would
           normally be assigned to a base station for single-frequency operation. However, this single-frequency
           operation may be subject to interference that would not occur to a two-frequency system.

     (j)   Frequencies other than those listed in subparts B and C of this part may be assigned in the 150–174 MHz,
           421–430 MHz, 450–470 MHz, and 470–512 MHz bands, provided the following conditions are met:

           (1) Such applications must be accompanied by a showing of frequency coordination in accordance with
               the requirements of § 90.175;

           (2) The frequencies must not be available in any other rule part of this chapter; and

           (3) The authorized bandwidth of any system operating in accordance with this paragraph must not
               overlap spectrum available in other rule parts of this chapter unless that spectrum is also allocated
               in part 90.

     (k) This paragraph is only applicable to entities with Finder's Preference requests pending before the
         Commission as of July 29, 1998. Notwithstanding any other provisions of this part, any eligible person
         shall be given a dispositive preference for a channel assignment on an exclusive basis in the 220–222
         MHz, 470–512 MHz, and 800/900 MHz (except on frequencies designated exclusively for SMR service)
         bands by submitting information that leads to the recovery of channels in these bands. Recovery of such
         channels must result from information provided regarding the failure of existing licensees to comply with
         the provisions of § 90.155, § 90.157, § 90.629, § 90.631 (e) or (f), or § 90.633 (c) or (d).

     (l)   In the 150–174 MHz band, except where otherwise specifically provided, authorizations for frequencies
           that were available prior to August 18, 1995 will be granted with channel bandwidths of 25 kHz or less.
           Authorizations for all other frequencies in this band will be granted with channel bandwidths of 12.5 kHz
           or less (i.e., in the Public Safety Pool, frequencies subject to §§ 90.20 (d)(27) and (d)(44), and in the
           Industrial/Business Pool, frequencies subject to §§ 90.35 (c)(30) and (c)(33)).

     (m) In the 421–512 MHz band, except where otherwise specifically provided, authorizations for frequencies
         that were available prior to August 18, 1995 will be granted with channel bandwidths of 25 kHz or less.
         New authorizations for frequencies 12.5 kHz removed from these frequencies will be made for channel
         bandwidths of 12.5 kHz or less (i.e., in the Public Safety Pool, frequencies subject to § 90.20(d)(27) and in
         the Industrial/Business Pool, frequencies subject to § 90.35(c)(30)). Authorizations for frequencies 6.25
         kHz removed from these frequencies will be granted with channel bandwidths of 6.25 kHz or less (i.e., in
         the Public Safety Pool, frequencies subject to § 90.20(d)(44), and in the Industrial/Business Pool,
         frequencies subject to § 90.35(c)(33)).

     (n) Any recovered channels in the 800 MHz SMR service will revert automatically to the holder of the EA
         license within which such channels are included. If there is no EA licensee for recovered channels, such
         channels will be retained by the Commission for future licensing.

(Secs. 4, 303, 307, 48 Stat., as amended, 1066, 1082, 1083; 47 U.S.C. 154, 303, 307)

[43 FR 54791, Nov. 22, 1978]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.173, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

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47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.175
Private Land Mobile Radio Services

§ 90.175 Frequency coordinator requirements.
Except for applications listed in paragraph (j) of this section, each application for a new frequency assignment, for a
change in existing facilities as listed in § 90.135(a), or for operation at temporary locations in accordance with §
90.137 must include a showing of frequency coordination as set forth further.

     (a) Frequency coordinators may request, and applicants are required to provide, all appropriate technical
         information, system requirements, and justification for requested station parameters when such
         information is necessary to identify and recommend the most appropriate frequency. Additionally,
         applicants bear the burden of proceeding and the burden of proof in requesting the Commission to
         overturn a coordinator's recommendation.

     (b) For frequencies between 25 and 470 MHz.

           (1) A statement is required from the applicable frequency coordinator as specified in §§ 90.20(c)(2) and
               90.35(b) recommending the most appropriate frequency. In addition, for frequencies to which §
               90.35(c)(63) or (66) is applicable, the written concurrence of the Commission-certified frequency
               coordinator for frequencies designated for central station alarm operations must be obtained. In
               addition, for frequencies above 150 MHz, if the interference contour of a proposed station would
               overlap the service contour of a station on a frequency formerly shared prior to radio service
               consolidation by licensees in the Manufacturers Radio Service, the Forest Products Radio Service,
               the Power Radio Service, the Petroleum Radio Service, the Motor Carrier Radio Service, the Railroad
               Radio Service, the Telephone Maintenance Radio Service or the Automobile Emergency Radio
               Service, the written concurrence of the coordinator for the industry-specific service, or the written
               concurrence of the licensee itself, must be obtained. Requests for concurrence must be responded
               to within 20 days of receipt of the request. The written request for concurrence shall advise the
               receiving party of the maximum 20 day response period. The coordinator's recommendation may
               include comments on technical factors such as power, antenna height and gain, terrain and other
               factors which may serve to minimize potential interference. In addition:

           (2) On frequencies designated for coordination or concurrence by a specific frequency coordinator as
               specified in §§ 90.20(c)(3) and 90.35(b), and on frequencies designated for concurrence as
               specified in § 90.35(c)(63) or (66), the applicable frequency coordinator shall provide a written
               supporting statement in instances in which coordination or concurrence is denied. The supporting
               statement shall contain sufficient detail to permit discernment of the technical basis for the denial of
               concurrence. Concurrence may be denied only when a grant of the underlying application would have
               a demonstrable, material, adverse effect on safety.

           (3) In instances in which a frequency coordinator determines that an applicant's requested frequency or
               the most appropriate frequency is one designated for coordination or concurrence by a specific
               frequency coordinator as specified in § 90.20(c)(3) or § 90.35(b), that frequency coordinator may
               forward the application directly to the appropriate frequency coordinator. A frequency coordinator
               may only forward an application as specified above if consent is received from the applicant.

           (4) For any application for mobile repeater station operations on frequencies denoted by both §
               90.20(d)(90) and (92), or by both § 90.35(c)(93) and (95) the frequency coordinator responsible for
               the application must determine and disclose to the applicant the call signs and the service areas of
               all active co-channel incumbent remote control and telemetry stations inside the applicant's

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47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.175(c)
Private Land Mobile Radio Services

                proposed area of operation by adding a special condition to the application, except when the
                applicant has obtained written concurrence from an affected incumbent licensee, or when the
                applicant and the incumbent licensee are the same entity.

     (c) For frequencies above 800 MHz: When frequencies are shared by more than one service, concurrence
         must be obtained from the other applicable certified coordinators.

     (d) For frequencies in the 450–470 MHz band: When used for secondary fixed operations, frequencies shall
         be assigned and coordinated pursuant to § 90.261.

     (e) For frequencies between 470–512 MHz, 769–775/799–805 MHz, 806–824/851–869 MHz and 896–901/
         935–940 MHz: A recommendation of the specific frequencies that are available for assignment in
         accordance with the loading standards and mileage separations applicable to the specific radio service,
         frequency pool, or category of user involved is required from an applicable frequency coordinator. In
         addition, a frequency coordinator must perform the contour overlap analysis detailed in § 90.621(d) when
         coordinating applications for channels in the 809–817 MHz/854–862 MHz band segment once interstitial
         12.5 kHz bandwidth channels become available for licensing in a National Public Safety Planning
         Advisory Committee region.

     (f) For frequencies in the 929–930 MHz band listed in paragraph (b) of § 90.494: A statement is required from
         the coordinator recommending the most appropriate frequency.

     (g) For frequencies between 1427–1432 MHz and 4940–4990 MHz: A statement is required as follows.

           (1) For frequencies between 1427–1432 MHz: A statement is required from the coordinator
               recommending the most appropriate frequency, operating power and area of operation in
               accordance with the requirements of § 90.259(b).

           (2) For frequencies between 4940–4990 MHz: A statement is required from the nationwide band
               manager recommending the most appropriate channel(s), bandwidth, operating power, and any other
               technical parameter which promotes robust and efficient use of the band while minimizing
               interference based on the standard for harmful interference specified in § 90.1211(a).

           (3) Compliance date. Paragraph (g)(2) of this section may contain information collection and/or
               recordkeeping requirements. Compliance with paragraph (g)(2) will not be required until this
               paragraph (g)(3) is removed or contains a compliance date, which will not occur until the date
               specified in a final rule published by the FCC announcing that the Office of Management and Budget
               has completed review of any information collection requirements associated with paragraph (g)(2)
               of this section or that they have determined such review is not required, which date shall be no
               earlier than February 28, 2024.

     (h) Any recommendation submitted in accordance with paragraphs (a), (c), (d), or (e) of this section is
         advisory in character and is not an assurance that the Commission will grant a license for operation on
         that frequency. Therefore, applicants are strongly advised not to purchase radio equipment operating on
         specific frequencies until a valid authorization has been obtained from the Commission.

     (i)   Applications for facilities near the Canadian border north of line A or east of line C in Alaska may require
           coordination with the Canadian government. See § 1.928 of this chapter.

     (j)   The following applications need not be accompanied by evidence of frequency coordination:

           (1) Applications for frequencies below 25 MHz.

           (2) Applications for a Federal Government frequency.

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                                                                                                     47 CFR 90.175(j)(3)
Private Land Mobile Radio Services

           (3) Applications for frequencies in the 72–76 MHz band except for mobile frequencies subject to §
               90.35(c)(77).

           (4) [Reserved]

           (5) Applications in the Industrial/Business Pool requesting a frequency designated for itinerant
               operations.

           (6) Applications in the Radiolocation Service.

           (7) Applications filed exclusively to modify channels in accordance with band reconfiguration in the
               806–824/851–869 band.

           (8) Applications for SMR frequencies contained in §§ 90.617(d) Table 4A, 90.617(e), 90.617(f) and
               90.619(b)(2).

           (9) Applications indicating license assignments such as change in ownership, control or corporate
               structure if there is no change in technical parameters.

          (10) Applications for mobile stations operating in the 470–512 MHz band, 799–805 MHz band, or above
               800 MHz if the frequency pair is assigned to a single system on an exclusive basis in the proposed
               area of operation.

          (11) Applications for add-on base stations in multiple licensed systems operating in the 470–512 MHz,
               769–775 MHz band, or above 800 MHz if the frequency pair is assigned to a single system on an
               exclusive basis.

          (12) Applications for control stations operating below 470 MHz, 769–775/799–805 MHz, or above 800
               MHz and meeting the requirements of § 90.119(b).

          (13) Except for applications for the frequencies set forth in § 90.719(c) and § 90.720, applications for
               frequencies in the 220–222 MHz band.

          (14) Applications for a state license under § 90.529.

          (15) Applications for narrowband low power channels listed for itinerant use in § 90.531(b)(4).

          (16) Applications for DSRCS licenses (as well as registrations for Roadside Units) under subpart M of this
               part in the 5895–5925 MHz band.

          (17) Applications for the deletion of a frequency and/or transmitter site location.

          (18) Applications for base, mobile, or control stations in the 763–768 MHz and 793–798 MHz bands.

          (19) Applications filed exclusively to return channels that had been authorized for commercial operation
               pursuant to § 90.621(e) or (f) to non-commercial operation (including removal of the authorization to
               interconnect with the public switched telephone network).

          (20) Applications for a reduction in the currently authorized emission bandwidth or a deletion of an
               existing emission designator.

          (21) Applications for a reduction in antenna height or authorized power.

          (22) [Reserved]

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                                                                                                                  47 CFR 90.176
Private Land Mobile Radio Services

[67 FR 41858, June 20, 2002, as amended at 67 FR 63289, Oct. 11, 2002; 68 FR 38639, June 30, 2003; 69 FR 39867, July 1, 2004;
69 FR 46443, Aug. 3, 2004; 70 FR 61061, Oct. 20, 2005; 70 FR 76708, Dec. 28, 2005; 72 FR 48859, Aug. 24, 2007; 75 FR 19284,
Apr. 14, 2010; 77 FR 45506, Aug. 1, 2012; 78 FR 25175, Apr. 29, 2013; 81 FR 2110, Jan. 15, 2016; 83 FR 61095, Nov. 27, 2018; 84
FR 29085, June 21, 2019; 86 FR 23296, May 3, 2021; 88 FR 12570, Feb. 28, 2023]

§ 90.176 Coordinator notification requirements on frequencies below 512 MHz, at 769–775/
799–805 MHz, or at 1427–1432 MHz.
     (a) Frequencies below 470 MHz. Within one business day of making a frequency recommendation, each
         frequency coordinator must notify and provide the information indicated in paragraph (g) of this section
         to all other frequency coordinators who are also certified to coordinate that frequency.

           (1) The applicable frequency coordinator for each frequency is specified in the coordinator column of
               the frequency tables of §§ 90.20(c)(3) and 90.35(b)(3).

           (2) For frequencies that do not specify any frequency coordinator, all certified in-pool coordinators must
               be notified.

           (3) For frequencies that are shared between the Public Safety Pool and the Industrial/Business Pool
               (frequencies subject to §§ 90.20(d)(7), (d)(25), (d)(34), or (d)(46) in the Public Safety Pool, and
               subject to §§ 90.35(c)(13), (c)(25), or (d)(4) in the Industrial/Business Pool), all certified
               coordinators of both pools must be notified.

     (b) Frequencies in the 470–512 MHz band. Within one business day of making a frequency recommendation,
         each frequency coordinator must notify and provide the information indicated in paragraph (g) of this
         section to all other certified frequency coordinators in the Public Safety Pool and the Industrial/Business
         Pool.

     (c) Frequencies in the 769–775/799–805 MHz band. Within one business day of making a frequency
         recommendation, each frequency coordinator must notify and provide the information indicated in
         paragraph (g) of this section to all other certified frequency coordinators in the Public Safety Pool.

     (d) Frequencies in the 1427–1432 MHz band. Within one business day of making a frequency
         recommendation, each frequency coordinator must notify and provide the information indicated in
         paragraph (g) of this section to the WMTS frequency coordinator designated in § 95.113 and to all other
         frequency coordinators who are also certified to coordinate that frequency.

     (e) Each frequency coordinator must also notify all other certified in-pool coordinators on any day that the
         frequency coordinator does not make any frequency recommendations.

     (f) Notification must be made to all coordinators at approximately the same time and can be made using any
         method that ensures compliance with the one business day requirement.

     (g) At a minimum the following information must be included in each notification:

           (1) Name of applicant;

           (2) Frequency or frequencies recommended;

           (3) Antenna locations and heights;

           (4) Effective radiated power (ERP);

           (5) Type(s) of emissions;

47 CFR 90.176(g)(5) (enhanced display)                                                                          page 206 of 516
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                                                                                                       47 CFR 90.176(g)(6)
Private Land Mobile Radio Services

           (6) Description of the service area; and

           (7) Date and time of recommendation.

     (h) Upon request, each coordinator must provide any additional information requested from another certified
         coordinator regarding a pending recommendation that it has processed but has not yet been granted by
         the Commission.

     (i)   It is the responsibility of each coordinator to insure that its frequency recommendations do not conflict
           with the frequency recommendations of any other frequency coordinator. Should a conflict arise, the
           affected coordinators are jointly responsible for taking action to resolve the conflict, up to and including
           notifying the Commission that an application may have to be returned.

[57 FR 41859, June 20, 2002, as amended at 72 FR 48859, Aug. 24, 2007]

§ 90.179 Shared use of radio stations.
Licensees of radio stations authorized under this rule part may share the use of their facilities. A station is shared
when persons not licensed for the station control the station for their own purposes pursuant to the licensee's
authorization. Shared use of a radio station may be either on a non-profit cost shared basis or on a for-profit private
carrier basis. Shared use of an authorized station is subject to the following conditions and limitations:

     (a) Persons may share a radio station only on frequencies for which they would be eligible for a separate
         authorization.

     (b) The licensee of the shared radio station is responsible for assuring that the authorized facility is used only
         by persons and only for purposes consistent with the requirements of this rule part.

     (c) Participants in the sharing arrangement may obtain a license for their own mobile units (including control
         points and/or control stations for control of the shared facility), or they may use mobile stations, and
         control stations or control points authorized to the licensee.

     (d) If the licensee shares the land station on a non-profit, cost shared basis to the licensee, this shared use
         must be pursuant to a written agreement between the licensee and each participant which sets out

           (1) the method of operation,

           (2) the components of the system which are covered by the sharing arrangements,

           (3) the method by which costs are to be apportioned, and

           (4) acknowledgement that all shared transmitter use must be subject to the licensee's control. These
               agreements must be kept as part of the station records.

     (e) If the land station which is being shared is interconnected with the public switched telephone network, the
         provisions of § 90.477 et seq. apply.

     (f) Above 800 MHz, shared use on a for-profit private carrier basis is permitted only by SMR, Private Carrier
         Paging, LMS, and DSRCS licensees. See subparts M, P, and S of this part.

     (g) Notwithstanding paragraph (a) of this section, licensees authorized to operate radio systems on Public
         Safety Pool frequencies designated in § 90.20 may share their facilities with Federal Government entities
         on a non-profit, cost-shared basis. Such a sharing arrangement is subject to the provisions of paragraphs
         (b), (d), and (e) of this section, and § 2.103(c) of this chapter concerning operations in the 758–769 MHz

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                                                                                                      47 CFR 90.179(h)
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           and 788–799 MHz bands. State governments authorized to operate radio systems under § 90.529 may
           share the use of their systems (for public safety services not made commercially available to the public)
           with any entity that would be eligible for licensing under § 90.523 and Federal government entities.

     (h) Notwithstanding paragraph (a) of this section, licensees authorized to operate radio systems on
         Industrial/Business Pool frequencies designated in § 90.35 may share their facilities with Public Safety
         Pool entities designated in § 90.20 and with Federal Government entities on a non-profit, cost-shared
         basis. Such a sharing arrangement is subject to the provisions of paragraphs (b), (d), and (e) of this
         section.

     (i)   The provisions of this section do not apply to licensees authorized to provide commercial mobile radio
           service under this part, including licensees authorized to use channels transferred or assigned pursuant to
           § 90.621(e)(2).

     (j)   On the Interoperability Channels in the 700 MHz Public Safety Band (See 90.531(b)(1)), hand-held and
           vehicular units operated by any licensee holding a license in the 700 MHz Public Safety Band or by any
           licensee for any public safety frequency pursuant to part 90 of the Commission's rules may communicate
           with or through land stations without further authorization and without a sharing agreement.

[48 FR 26620, June 9, 1983]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.179, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.185 Multiple licensing of radio transmitting equipment in the mobile radio service.
Two or more persons eligible for licensing under this rule part may be licensed for the same land station under the
following terms and conditions.

     (a) Each licensee complies with the general operating requirements set out in § 90.403 of the rules.

     (b) Each licensee is eligible for the frequency(ies) on which the land station operates.

     (c) If the multiple licensed base station is interconnected with the public switched telephone network, the
         provisions of § 90.477 et seq. apply.

[48 FR 26621, June 9, 1983]

§ 90.187 Trunking in the bands between 150 and 512 MHz.
     (a) Applicants for centralized and decentralized trunked systems operating on frequencies between 150 and
         512 MHz (except 220–222 MHz) must indicate on their applications (radio service and class of station
         code, instructions for FCC Form 601) that their system will be trunked. Licensees of stations that are not
         trunked may trunk their systems only after modifying their license (see § 1.927 of this chapter).

     (b) Except as provided in paragraphs (c) and (d) of this section, trunked systems operating under this section
         must employ equipment that prevents transmission on a trunked frequency if a signal from another
         system is present on that frequency. The level of monitoring must be sufficient to avoid harmful
         interference to other systems.

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                                                                                                           47 CFR 90.187(c)
Private Land Mobile Radio Services

     (c) The monitoring requirement in paragraph (b) of this section does not apply to trunked systems operating
         in the 470–512 MHz band that meet the loading requirements of § 90.313 and have exclusive use of their
         frequencies in their service area.

     (d) The monitoring requirement in paragraph (b) of this section does not apply if the application is
         accompanied by written consent from all affected licensees.

           (1) Affected licensees for the purposes of this section are licensees (and previously filed pending
               applicants) meeting both a spectral and a contour overlap as defined:

                 (i)   Spectral overlap. Licensees (and filers of previously filed pending applications) with an assigned
                       (or proposed) frequency having a spectral separation from a frequency of the proposed
                       centralized trunked station that does not exceed these values:

                                                                          Incumbent authorized bandwidth
                                   Proposed station
                                                                 25 kHz              12.5 kHz              6.25 kHz
                        25 kHz                            15.0 kHz             15.0 kHz              15.0 kHz
                        12.5 kHz                          15.0 kHz             7.5 kHz               7.5 kHz
                        6.25 kHz                          15.0 kHz             7.5 kHz               5.0 kHz

                       The left column is the authorized bandwidth requested for the proposed trunked station. The
                       second row is the authorized bandwidth of the incumbent. The other cells in the table show the
                       frequency range above and below the frequency of the proposed centralized trunked station that
                       must be considered.

                 (ii) Contour overlap.

                       (A) Licensees (and filers of previously filed pending applications) with a service contour (37
                           dBu for stations in the 150–174 MHz band, and 39 dBu for stations in the 421–512 MHz
                           band) that is overlapped by the proposed centralized trunked station's interference contour
                           (19 dBu for stations in the 150–174 MHz band, and 21 dBu for stations in the 421–512
                           MHz band). Contour calculations are required for base station facilities. Contour
                           calculations are required for associated mobile stations only in the 150–174 MHz band,
                           with the associated base station's service contour used as both the mobile station's
                           service contour and its interference contour.

                       (B) The calculation of service and interference contours shall be performed using generally
                           accepted engineering practices and standards, including appropriate derating factors,
                           agreed to by a consensus of all certified frequency coordinators. Frequency coordinators
                           shall make this information available to the Commission upon request.

                       (C) For purposes of this section, the authorized operating area of a station or proposed station
                           with no associated base station shall be used as both the station's service contour and its
                           interference contour.

                       (D) After January 1, 2013, licensees with an authorized bandwidth exceeding 12.5 kHz will not
                           be deemed affected licensees, unless the licensee meets the efficiency standard set forth
                           in § 90.203(j)(3) or the licensee was granted a waiver of § 90.209(b).

47 CFR 90.187(d)(1)(ii)(D) (enhanced display)                                                              page 209 of 516
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                                                                                                     47 CFR 90.187(d)(2)
Private Land Mobile Radio Services

           (2) The written consent from an affected licensee shall state all terms agreed to by the parties and shall
               be signed by the parties. The written consent shall be maintained by the operator of the centralized
               trunked station and be made available to the Commission upon request. An application for a
               centralized trunked station shall include either a certification from the applicant that written consent
               has been obtained from all affected licensees, or a certification from the frequency coordinator that
               there are no affected licensees.

           (3) In addition, the service contour for proposed centralized trunked stations on Industrial/Business Pool
               frequencies shall not be overlapped by an incumbent licensee's interference contour. An application
               filed for Public Safety Pool frequencies, see § 90.20, for a proposed centralized trunked station in
               which the service contour of the proposed station is overlapped by the interference contour of the
               incumbent station(s) is allowed, but the applicant must accept any resultant interference.

     (e) The exclusive service area of a station that has been authorized for centralized trunked operation will be
         protected from proposed centralized trunked, decentralized trunked or conventional operations in
         accordance with the standards of paragraph (d) of this section.

     (f) Trunking of systems licensed on paging-only channels or licensed in the Radiolocation Service (subpart F)
         is not permitted.

     (g) Channel limits.

           (1) No more than 10 channels for new centralized trunked operation in the Industrial/Business Pool may
               be applied for at a single transmitter location or at locations with overlapping service contours as
               specified in paragraph (d) of this section. Subsequent applications for centralized trunked operation
               are limited to no more than an additional 10 channels, and must be accompanied by a certification,
               submitted to the certified frequency coordinator coordinating the application, that all of the
               applicant's existing channels authorized for centralized trunked operation at that location or at
               locations with overlapping service contours have been constructed and placed in operation. Certified
               frequency coordinators are authorized to require documentation in support of the applicant's
               certification that existing channels have been constructed and placed in operation.

           (2) Applicants for Public Safety Pool channels may request more than 10 centralized trunked channels
               at a single location or at locations with overlapping service contours if accompanied by a showing of
               sufficient need. The requirement for such a showing may be satisfied by submission of loading
               studies demonstrating that requested channels in excess of 10 will be loaded with 50 mobiles per
               channel within a five year period commencing with the grant of the application.

     (h) If a licensee authorized for centralized trunked operation discontinues trunked operation for a period of 30
         consecutive days, the licensee, within 7 days thereafter, shall file a conforming application for
         modification of license with the Commission.

[78 FR 28754, May 16, 2013, as amended at 80 FR 18146, Apr. 3, 2015]

Subpart I—General Technical Standards
§ 90.201 Scope.
This subpart sets forth the general technical requirements for use of frequencies and equipment in the radio
services governed by this part. Such requirements include standards for acceptability of equipment, frequency
tolerance, modulation, emissions, power, and bandwidths. Special additional technical standards applicable to
certain frequency bands and certain specialized uses are set forth in subparts J, K, N, and R.
47 CFR 90.201 (enhanced display)                                                                         page 210 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.203
Private Land Mobile Radio Services

[67 FR 76700, Dec. 13, 2002]

§ 90.203 Certification required.
     (a) Except as specified in paragraphs (b) and (l) of this section, each transmitter utilized for operation under
         this part and each transmitter marketed as set forth in § 2.803 of this chapter must be of a type which
         has been certified for use under this part.

           (1) Effective October 16, 2002, except in the 1427–1432 MHz band, an equipment approval may no
               longer be obtained for in-hospital medical telemetry equipment operating under the provisions of
               this part. The requirements for obtaining an approval for medical telemetry equipment after this date
               are found in subpart H of part 95 of this chapter.

           (2) Effective July 5, 2022, an equipment approval may no longer be obtained for DSRCS equipment
               (RSUs and OBUs) operating under the provisions of this part.

           (3) Any manufacturer of radio transmitting equipment (including signal boosters) to be used in these
               services may request certification for such equipment following the procedures set forth in subpart
               J of part 2 of this chapter. Certification for an individual transmitter or signal booster also may be
               requested by an applicant for a station authorization by following the procedure set forth in part 2 of
               this chapter. Such equipment if approved will be individually enumerated on the station
               authorization.

     (b) Certification is not required for the following:

           (1) [Reserved]

           (2) Transmitters used for police zone and interzone stations authorized as of January 1, 1965.

           (3) Transmitting equipment used in the band 1427–1435 MHz.

           (4) Transmitters used in radiolocation stations in accordance with subpart F authorized prior to January
               1, 1974, for public safety and land transportation applications (old parts 89 and 93).

           (5) Transmitters used in radiolocation stations in accordance with subpart F authorized for industrial
               applications (old part 91) prior to January 1, 1978.

           (6) [Reserved]

           (7) Transmitters imported and marketed prior to September 1, 1996 for use by LMS systems.

     (c) Radiolocation transmitters for use in public safety and land transportation applications marketed prior to
         January 1, 1974, must meet the applicable technical standards in this part, pursuant to § 2.803 of this
         chapter.

     (d) Radiolocation transmitters for use in public safety and land transportation applications marketed after
         January 1, 1974, must comply with the requirements of paragraph (a) of this section.

     (e) Except as provided in paragraph (g) of this section, transmitters designed to operate above 25 MHz shall
         not be certified for use under this part if the operator can program and transmit on frequencies, other than
         those programmed by the manufacturer, service or maintenance personnel, using the equipment's
         external operation controls.

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                                                                                                         47 CFR 90.203(f)
Private Land Mobile Radio Services

     (f) Except as provided in paragraph (g) of this section, transmitters designed to operate above 25 MHz that
         have been approved prior to January 15, 1988, and that permit the operator, by using external controls, to
         program the transmitter's operating frequencies, shall not be manufactured in, or imported into the United
         States after March 15, 1988. Marketing of these transmitters shall not be permitted after March 15, 1989.

     (g) Transmitters having frequency programming capability and that are designed to operate above 25 MHz
         are exempt from paragraphs (e) and (f) of this section if the design of such transmitters:

            (1) Is such that transmitters with external controls normally available to the operator must be internally
                modified to place the equipment in the programmable mode. Further, while in the programmable
                mode, the equipment shall not be capable of transmitting. The procedures for making the
                modification and altering the frequency program shall not be made available with the operating
                information normally supplied to the end user of the equipment; or

            (2) Requires the transmitter to be programmed for frequencies through controls normally inaccessible to
                the operator; or

            (3) Requires equipment to be programmed for frequencies through use of external devices or
                specifically programmed modules made available only to service/maintenance personnel; or

            (4) Requires equipment to be programmed through cloning (copying a program directly from another
                transmitter) using devices and procedures made available only to service/maintenance personnel.

     (h) The requirements of paragraphs (e), (f), and (g) of this section shall not apply if:

            (1) The equipment has been designed and manufactured specifically for aircraft use; and

            (2) The part 90 certification limits the use of the equipment to operations only under § 90.423.

      (i)   Mobile/portable equipment capable of use in the 806–809/851–854 MHz band segment and submitted
            for certification thirty or more days after publication of a summary of the Report and Order, (FCC 16–48,
            released April 25, 2016) in PS Docket 13–209 in the FEDERAL REGISTER must have the capability to operate
            in the analog FM mode on the mutual aid channels designated in § 90.617(a)(1).

      (j)   Except where otherwise specially provided for, transmitters operating on frequencies in the 150–174 MHz
            and 406–512 MHz bands must comply with the following:

            (1) Applications for certification of mobile and portable equipment designed to transmit voice on public
                safety frequencies in the 150–174 MHz or 450–470 MHz band will be granted only if the mobile/
                portable equipment is capable of operating in the analog FM mode on the nationwide public safety
                interoperability channels in the 150–174 MHz band or 450–470 MHz band, as appropriate. (See §
                90.20(c), (d)(80) of this part.)

            (2) Applications for certification received on or after February 14, 1997 but before January 1, 2005 will
                only be granted for equipment with the following channel bandwidths:

                 (i)   12.5 kHz or less for single bandwidth mode equipment or multi-bandwidth mode equipment
                       with a maximum channel bandwidth of 12.5 kHz;

                 (ii) 25 kHz for multi-bandwidth mode equipment with a maximum channel bandwidth of 25 kHz if it
                      is capable of operating on channels of 12.5 kHz or less; and

                 (iii) 25 kHz if the equipment meets the efficiency standard of paragraph (j)(3) of this section.

47 CFR 90.203(j)(2)(iii) (enhanced display)                                                               page 212 of 516
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                                                                                                        47 CFR 90.203(j)(3)
Private Land Mobile Radio Services

           (3) Applications for part 90 certification of transmitters designed to operate on frequencies in the
               150.8–162.0125 MHz, 173.2–173.4 MHz, and/or 421–512 MHz bands, received on or after February
               14, 1997 must include a certification that the equipment meets a spectrum efficiency standard of
               one voice channel per 12.5 kHz of channel bandwidth. Additionally, if the equipment is capable of
               transmitting data, has transmitter output power greater than 500 mW, and has a channel bandwidth
               of more than 6.25 kHz, the equipment must be capable of supporting a minimum data rate of 4800
               bits per second per 6.25 kHz of channel bandwidth.

           (4) Applications for part 90 certification of transmitters designed to operate on frequencies in the
               150.8–162.0125 MHz, 173.2–173.4 MHz, and/or 421–512 MHz bands, received on or after January
               1, 2011, except for hand-held transmitters with an output power of two watts or less, will only be
               granted for equipment with the following channel bandwidths:

                 (i)   6.25 kHz or less for single bandwidth mode equipment;

                (ii) 12.5 kHz for multi-bandwidth mode equipment with a maximum channel bandwidth of 12.5 kHz
                     if it is capable of operating on channels of 6.25 kHz or less;

                (iii) 25 kHz for multi-bandwidth mode equipment with a maximum channel bandwidth of 25 kHz if it
                      is capable of operating on channels of 6.25 kHz or less; and

                (iv) Up to 25 kHz if the equipment meets the efficiency standard of paragraph (j)(5) of this section.

           (5) Applications for part 90 certification of transmitters designed to operate on frequencies in the
               150.8–162.0125 MHz, 173.2–173.4 MHz, and/or 421–512 MHz bands, received on or after January
               1, 2011, must include a certification that the equipment meets a spectrum efficiency standard of one
               voice channel per 6.25 kHz of channel bandwidth. Additionally, if the equipment is capable of
               transmitting data, has transmitter output power greater than 500 mW, and has a channel bandwidth
               of more than 6.25 kHz, the equipment must be capable of supporting a minimum data rate of 4800
               bits per second per 6.25 kHz of channel bandwidth.

           (6) Modification and permissive changes to certification grants.

                 (i)   The Commission's Equipment Authorization Division will not allow adding a multi-mode or
                       narrowband operation capability to single bandwidth mode transmitters, except under the
                       following conditions:

                       (A) Transmitters that have the inherent capability for multi-mode or narrowband operation
                           allowed in paragraphs (j)(2) and (j)(4) of this section, may have their grant of certification
                           modified (reissued) upon demonstrating that the original unit complies with the technical
                           requirements for operation; and

                       (B) New FCC Identifiers will be required to identify equipment that needs to be modified to
                           comply with the requirements of paragraphs (j)(2) and (j)(4) of this section.

                (ii) All other applications for modification or permissive changes will be subject to part 2 of this
                     chapter.

           (7) Transmitters designed only for one-way paging operations may be certified with up to a 25 kHz
               bandwidth and are exempt from the spectrum efficiency requirements of paragraphs (j)(3) and (j)(5)
               of this section.

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                                                                                                      47 CFR 90.203(j)(8)
Private Land Mobile Radio Services

           (8) The Commission's Equipment Authorization Division may, on a case by case basis, grant certification
               to equipment with slower data rates than specified in paragraphs (j)(3) and (j)(5) of this section,
               provided that a technical analysis is submitted with the application which describes why the slower
               data rate will provide more spectral efficiency than the standard data rate.

           (9) Transmitters used for stolen vehicle recovery on 173.075 MHz must comply with the requirements of
               § 90.20(e)(6).

           (10) Except as provided in this paragraph, single-mode and multi-mode transmitters designed to operate
                in the 150–174 MHz and 421–512 MHz bands that operate with a maximum channel bandwidth
                greater than 12.5 kHz shall not be manufactured in, or imported into, the United States after January
                1, 2011, except as follows:

                 (i)   To the extent that the equipment meets the efficiency standard of paragraph (j)(3) of this
                       section, or

                (ii) Where operation with a bandwidth greater than 12.5 kHz is specified elsewhere.

     (k) For transmitters operating on frequencies in the 220–222 MHz band, certification will only be granted for
         equipment with channel bandwidths up to 5 kHz, except that certification will be granted for equipment
         operating on 220–222 MHz band Channels 1 through 160 (220.0025 through 220.7975/221.0025 through
         221.7975), 171 through 180 (220.8525 through 220.8975/221.8525 through 221.8975), and 186 through
         200 (220.9275 through 220.9975/221.9275 through 221.9975) with channel bandwidths greater than 5
         kHz.

     (l)   Ocean buoy and wildlife tracking transmitters operating in the band 40.66–40.70 MHz or 216–220 MHz
           under the provisions of § 90.248 shall be authorized under Supplier's Declaration of Conformity pursuant
           to subpart J of part 2 of this chapter.

            Note 1 to paragraph (l): The verification procedure has been replaced by Supplier's Declaration of
            Conformity. Equipment previously authorized under subpart J of part 2 of this chapter may remain
            in use. See § 2.950 of this chapter.

     (m) Applications for part 90 certification of transmitters designed to operate in in 769–775 MHz and 799–805
         MHz frequency bands will only be granted to transmitters meeting the modulation, spectrum usage
         efficiency and channel capability requirements listed in §§ 90.535, 90.547, and 90.548.

     (n) [Reserved]

     (o) Equipment certification for transmitters in the 3650–3700 MHz band.

           (1) Applications for all transmitters must describe the methodology used to meet the requirement that
               each transmitter employ a contention based protocol and indicate whether it is capable of avoiding
               co-frequency interference with devices using all other types of contention-based protocols (see §§
               90.7, 90.1305 and 90.1321 of this part);

           (2) Applications for mobile transmitters must identify the base stations with which they are designed to
               communicate and describe how the requirement to positively receive and decode an enabling signal
               is incorporated (see § 90.1333 of this part); and

47 CFR 90.203(o)(2) (enhanced display)                                                                    page 214 of 516
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                                                                                                    47 CFR 90.203(o)(3)
Private Land Mobile Radio Services

           (3) Applications for systems using advanced antenna technology must provide the algorithm used to
               reduce the equivalent isotropically radiated power (EIRP) to the maximum allowed in the event of
               overlapping beams (see § 90.1321 of this part).

           (4) Applications for fixed transmitters must include a description of the installation instructions and
               guidelines for RF safety exposure requirements that will be included with the transmitter. (See §
               90.1335).

     (p) Certification requirements for signal boosters are set forth in § 90.219.

[43 FR 54791, Nov. 22, 1978; 44 FR 32219, June 5, 1979]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.203, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.205 Power and antenna height limits.
Applicants for licenses must request and use no more power than the actual power necessary for satisfactory
operation. Except where otherwise specifically provided for, the maximum power that will be authorized to
applicants whose license applications for new stations are filed after August 18, 1995 is as follows:

     (a) Below 25 MHz. For single sideband operations (J3E emission), the maximum transmitter peak envelope
         power is 1000 watts.

     (b) 25–50 MHz. The maximum transmitter output power is 300 watts.

     (c) 72–76 MHz. The maximum effective radiated power (ERP) for stations operating on fixed frequencies is
         300 watts. Stations operating on mobile-only frequencies are limited to one watt transmitter output
         power.

     (d) 150–174 MHz.

           (1) The maximum allowable station ERP is dependent upon the station's antenna HAAT and required
               service area and will be authorized in accordance with table 1. Applicants requesting an ERP in
               excess of that listed in table 1 must submit an engineering analysis based upon generally accepted
               engineering practices and standards that includes coverage contours to demonstrate that the
               requested station parameters will not produce coverage in excess of that which the applicant
               requires.

           (2) Applications for stations where special circumstances exist that make it necessary to deviate from
               the ERP and antenna heights in Table 1 will be submitted to the frequency coordinator accompanied
               by a technical analysis, based upon generally accepted engineering practices and standards, that
               demonstrates that the requested station parameters will not produce a signal strength in excess of
               37 dBu at any point along the edge of the requested service area. The coordinator may then
               recommend any ERP appropriate to meet this condition.

           (3) An applicant for a station with a service area radius greater than 40 km (25 mi) must justify the
               requested service area radius, which will be authorized only in accordance with table 1, note 4. For
               base stations with service areas greater than 80 km, all operations 80 km or less from the base
               station will be on a primary basis and all operations outside of 80 km from the base station will be
               on a secondary basis and will be entitled to no protection from primary operations.

47 CFR 90.205(d)(3) (enhanced display)                                                                   page 215 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                                          47 CFR 90.205(d)(3)
Private Land Mobile Radio Services

                      Table 1—150–174MHz—Maximum ERP/Reference HAAT for a Specific Service Area Radius

                                                     Service area radius (km)
                               3   8   13       16          24        32   40   484       644       804
Maximum ERP    (w)1            1 28 178     2   500     2   500   2   500 500   2   500   2   500   2   500
                           3
Up to reference HAAT (m)       15 15   15        15          33        65 110       160       380       670
1   Maximum ERP indicated provides for a 37 dBu signal strength at the edge of the service area per FCC Report R–6602, Fig. 19 (See § 73.699, Fig. 10).

2   Maximum ERP of 500 watts allowed. Signal strength at the service area contour may be less than 37 dBu.

3When the actual antenna HAAT is greater than the reference HAAT, the allowable ERP will be reduced in accordance with the following equation: ERPallow =
ERPmax × (HAATref / HAATactual)2.

4Applications for this service area radius may be granted upon specific request with justification and must include a technical demonstration that the signal
strength at the edge of the service area does not exceed 37 dBu.

47 CFR 90.205(d)(3) (enhanced display)                                                                                                        page 216 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.205(e)
Private Land Mobile Radio Services

     (e) 217–220 MHz. Limitations on power and antenna heights are specified in § 90.259.

     (f) 220–222 MHz. Limitations on power and antenna heights are specified in § 90.729.

     (g) 421–430 MHz. Limitations on power and antenna heights are specified in § 90.279.

     (h) 450–470 MHz.

           (1) The maximum allowable station effective radiated power (ERP) is dependent upon the station's
               antenna HAAT and required service area and will be authorized in accordance with table 2.
               Applicants requesting an ERP in excess of that listed in table 2 must submit an engineering analysis
               based upon generally accepted engineering practices and standards that includes coverage
               contours to demonstrate that the requested station parameters will not produce coverage in excess
               of that which the applicant requires.

           (2) Applications for stations where special circumstances exist that make it necessary to deviate from
               the ERP and antenna heights in Table 2 will be submitted to the frequency coordinator accompanied
               by a technical analysis, based upon generally accepted engineering practices and standards, that
               demonstrates that the requested station parameters will not produce a signal strength in excess of
               39 dBu at any point along the edge of the requested service area. The coordinator may then
               recommend any ERP appropriate to meet this condition.

           (3) An applicant for a station with a service area radius greater than 32 km (20 mi) must justify the
               requested service area radius, which may be authorized only in accordance with table 2, note 4. For
               base stations with service areas greater than 80 km, all operations 80 km or less from the base
               station will be on a primary basis and all operations outside of 80 km from the base station will be
               on a secondary basis and will be entitled to no protection from primary operations.

47 CFR 90.205(h)(3) (enhanced display)                                                                 page 217 of 516
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                                                                                                                                          47 CFR 90.205(h)(3)
Private Land Mobile Radio Services

                      Table 2—450–470 MHz—Maximum ERP/Reference HAAT for a Specific Service Area Radius

                                                        Service area radius (km)
                               3    8        13        16        24        32    404       484       644       804
Maximum ERP    (w)1             2 100    2   500   2   500   2   500   2   500   2   500   2   500   2   500   2   500
                           3
Up to reference HAAT (m)       15   15        15        27        63       125       250       410       950 2700
1   Maximum ERP indicated provides for a 39 dBu signal strength at the edge of the service area per FCC Report R–6602, Fig. 29 (See § 73.699, Fig. 10 b).

2   Maximum ERP of 500 watts allowed. Signal strength at the service area contour may be less than 39 dBu.

3When the actual antenna HAAT is greater than the reference HAAT, the allowable ERP will be reduced in accordance with the following equation: ERPallow =
ERPmax × (HAATref / HAATactual)2.

4Applications for this service area radius may be granted upon specific request with justification and must include a technical demonstration that the signal
strength at the edge of the service area does not exceed 39 dBu.

47 CFR 90.205(h)(3) (enhanced display)                                                                                                        page 218 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                               47 CFR 90.205(i)
Private Land Mobile Radio Services

     (i)   470–512 MHz. Power and height limitations are specified in §§ 90.307 and 90.309.

     (j)   758–775 MHz and 788–805 MHz. Power and height limitations are specified in §§ 90.541 and 90.542.

     (k) 806–824 MHz, 851–869 MHz, 896–901 MHz and 935–940 MHz. Power and height limitations for
         frequencies in the 806–824 MHz and 851–869 MHz bands and for narrowband operations in the
         896–901/935–940 MHz band are specified in § 90.635.

     (l)   902–928 MHz. LMS systems operating pursuant to subpart M of this part in the 902–927.25 MHz band
           will be authorized a maximum of 30 watts ERP. LMS equipment operating in the 927.25–928 MHz band
           will be authorized a maximum of 300 watts ERP. ERP must be measured as peak envelope power.
           Antenna heights will be as specified in § 90.353(h).

     (m) 929–930 MHz. Limitations on power and antenna heights are specified in § 90.494.

     (n) 1427–1429.5 MHz and 1429.5–1432 MHz. Limitations on power are specified in § 90.259.

     (o) 2450–2483.5 MHz. The maximum transmitter power is 5 watts.

     (p) 4940–4990 MHz. Limitations on power are specified in § 90.1215.

     (q) 5895–5925 MHz. Power and height limitations are specified in subpart M of this part.

     (r) All other frequency bands. Requested transmitter power will be considered and authorized on a case by
         case basis.

     (s) The output power shall not exceed by more than 20 percent either the output power shown in the Radio
         Equipment List [available in accordance with § 90.203(a)(1)] for transmitters included in this list or when
         not so listed, the manufacturer's rated output power for the particular transmitter specifically listed on the
         authorization.

[60 FR 37262, July 19, 1995, as amended at 62 FR 2039, Jan. 15, 1997; 63 FR 58651, Nov. 2, 1998; 64 FR 66409, Nov. 26, 1999; 67
FR 41860, June 20, 2002; 68 FR 38639, June 30, 2003; 69 FR 46443, Aug. 3, 2004; 72 FR 48860, Aug. 24, 2007; 79 FR 600, Jan. 6,
2014; 85 FR 43138, July 15, 2020; 86 FR 23297, May 3, 2021]

§ 90.207 Types of emissions.
Unless specified elsewhere in this part, stations will be authorized emissions as provided for in paragraphs (b)
through (n) of this section.

     (a) Most common emission symbols. For a complete listing of emission symbols allowable under this part,
         see § 2.201 of this chapter.

           (1) The first symbol indicates the type of modulation on the transmitter carrier.

           A—Amplitude modulation, double sideband with identical information on each sideband.

           F—Frequency modulation.

           G—Phase modulation.

           J—Single sideband with suppressed carrier.

           P—Unmodulated pulse.
47 CFR 90.207(a)(1) (enhanced display)                                                                          page 219 of 516
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                                                                                                    47 CFR 90.207(a)(2)
Private Land Mobile Radio Services

          W—Cases not covered above, in which an emission consists of the main carrier modulated, either
          simultaneously or in a pre-established sequence, in a combination of two or more of the following modes:
          amplitude, angle, pulse.

           (2) The second symbol indicates the type of signal modulating the transmitter carrier.

          0—No modulation.

          1—Digital modulation, no subcarrier.

          2—Digital modulation, modulated subcarrier.

          3—Analog modulation.

           (3) The third symbol indicates the type of transmitted information.

          A—Telegraphy for aural reception.

          B—Telegraphy for machine reception.

          C—Facsimile.

          D—Data, telemetry, and telecommand.

          E—Voice.

          N—No transmitted information.

          W—Combination of the above.

     (b) Authorizations to use A3E, F3E, or G3E emission also include the use of emissions for tone signals or
         signaling devices whose sole functions are to establish and to maintain communications, to provide
         automatic station identification, and for operations in the Public Safety Pool, to activate emergency
         warning devices used solely for the purpose of advising the general public or emergency personnel of an
         impending emergency situation.

     (c) The use of F3E or G3E emission in these services will be authorized only on frequencies above 25 MHz.

     (d) Except for Traveler's Information stations in the Public Safety Pool authorized in accordance with §
         90.242, only J3E emission will be authorized for telephony systems on frequencies below 25 MHz.

     (e) For non-voice paging operations, only A1A, A1D, A2B, A2D, F1B, F1D, F2B, F2D, G1B, G1D, G2B, or G2D
         emissions will be authorized.

     (f) For radioteleprinter operations that may be authorized in accordance with § 90.237, only F1B, F2B, G1B or
         G2B emissions will be authorize above 25 MHz, and A1B or A2B emissions below 25 MHz.

     (g) For radiofacsimile operations that may be authorized in accordance with § 90.237, only F3C or G3C
         emissions will be authorized above 25 MHz, and A3C emissions below 25 MHz.

     (h) [Reserved]

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                                                                                                              47 CFR 90.207(i)
Private Land Mobile Radio Services

     (i)   For telemetry operations, when specifically authorized under this part, only A1D, A2D, F1D, or F2D
           emissions will be authorized.

     (j)   For call box operations that may be authorized in accordance with § 90.241, only A1A, A1D, A2B, A2D, F1B,
           F1D, F2B, F2D, G1B, G1D, G2B, G2D, F3E or G3E emissions will be authorized.

     (k) For radiolocation operations as may be authorized in accordance with subpart F, unless otherwise
         provided for any type of emission may be authorized upon a satisfactory showing of need.

     (l)   For stations in the Public Safety and Industrial/Business Pools utilizing digital voice modulation, in either
           the scrambled or unscrambled mode, F1E or G1E emission will be authorized. Authorization to use digital
           voice emissions is construed to include the use of F1D, F2D, G1D, or G2D emission subject to the
           provisions of § 90.233.

     (m) For narrowband operations in a 3.6 kHz maximum authorized bandwith, any modulation type may be used
         which complies with the emission limitations of § 90.209.

     (n) Other emissions. Requests for emissions other than those listed in paragraphs (c) through (e) of this
         section will be considered on a case-by-case basis to ensure that the requested emission will not cause
         more interference than other currently permitted emissions.

[49 FR 48711, Dec. 14, 1984, as amended at 50 FR 13606, Apr. 5, 1985; 50 FR 25240, June 18, 1985; 52 FR 29856, Aug. 12, 1987;
54 FR 38681, Sept. 20, 1989; 60 FR 15252, Mar. 23, 1995; 60 FR 37263, July 19, 1995; 62 FR 2039, Jan. 15, 1997; 62 FR 18927,
Apr. 17, 1997; 64 FR 36270, July 6, 1999; 72 FR 35194, June 27, 2007]

§ 90.209 Bandwidth limitations.
     (a) Each authorization issued to a station licensed under this part will show an emission designator
         representing the class of emission authorized. The designator will be prefixed by a specified necessary
         bandwidth. This number does not necessarily indicate the bandwidth occupied by the emission at any
         instant. In those cases where § 2.202 of this chapter does not provide a formula for the computation of
         necessary bandwidth, the occupied bandwidth, as defined in part 2 of this chapter, may be used in lieu of
         the necessary bandwidth.

     (b) The maximum authorized single channel bandwidth of emission corresponding to the type of emission
         specified in § 90.207 is as follows:

           (1) For A1A or A1B emissions, the maximum authorized bandwidth is 0.25 kHz. The maximum
               authorized bandwidth for type A3E emission is 8 kHz.

           (2) For operations below 25 MHz utilizing J3E emission, the bandwidth occupied by the emission shall
               not exceed 3000 Hz. The assigned frequency will be specified in the authorization. The authorized
               carrier frequency will be 1400 Hz lower in frequency than the assigned frequency. Only upper
               sideband emission may be used. In the case of regularly available double sideband radiotelephone
               channels, an assigned frequency for J3E emissions is available either 1600 Hz below or 1400 Hz
               above the double sideband radiotelephone assigned frequency.

           (3) For all other types of emissions, the maximum authorized bandwidth shall not be more than that
               normally authorized for voice operations.

           (4) Where a frequency is assigned exclusively to a single licensee, more than a single emission may be
               used within the authorized bandwidth. In such cases, the frequency stability requirements of §
               90.213 must be met for each emission.

47 CFR 90.209(b)(4) (enhanced display)                                                                         page 221 of 516
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                                                                                                        47 CFR 90.209(b)(5)
Private Land Mobile Radio Services

           (5) Unless specified elsewhere, channel spacings and bandwidths that will be authorized in the following
               frequency bands are given in the following table.

                          Table 1 to § 90.209(b)(5)—Standard Channel Spacing/Bandwidth

                       Frequency band (MHz)           Channel spacing (kHz)              Authorized bandwidth (kHz)
                            2
                 Below 25
                 25–50                                                             20                                      20
                 72–76                                                             20                                      20
                                                                               1                          13
                 150–174                                                           7.5                         20/11.25/6
                 216–2205                                                      6.25                            20/11.25/6
                 220–222                                                            5                                       4
                 406–5122                                                  1   6.25                      136   20/11.25/6
                 806–809/851–854                                               12.5                                        20
                                                                                                               6
                 809–817/854–862                                               12.5                                20/11.25
                 817–824/862–869                                                   25                                  6   20
                 896–901/935–940                                               12.5                                    13.6
                 902–9284
                 929–930                                                           25                                      20
                 1427–14325                                                    12.5                                    12.5
                 3
                     2450–2483.52
                 Above 25002

                1   For stations authorized on or after August 18, 1995.

                2Bandwidths for radiolocation stations in the 420–450 MHz band and for stations operating in
                bands subject to this footnote will be reviewed and authorized on a case-by-case basis.

                3Operations using equipment designed to operate with a 25 kHz channel bandwidth will be
                authorized a 20 kHz bandwidth. Operations using equipment designed to operate with a 12.5 kHz
                channel bandwidth will be authorized a 11.25 kHz bandwidth. Operations using equipment
                designed to operate with a 6.25 kHz channel bandwidth will be authorized a 6 kHz bandwidth. All
                stations must operate on channels with a bandwidth of 12.5 kHz or less beginning January 1, 2013,
                unless the operations meet the efficiency standard of § 90.203(j)(3).

                4 The maximum authorized bandwidth shall be 12 MHz for non-multilateration LMS operations in
                the band 909.75–921.75 MHz and 2 MHz in the band 902.00–904.00 MHz. The maximum
                authorized bandwidth for multilateration LMS operations shall be 5.75 MHz in the 904.00–909.75
                MHz band; 2 MHz in the 919.75–921.75 MHz band; 5.75 MHz in the 921.75–927.25 MHz band and
                its associated 927.25–927.50 MHz narrowband forward link; and 8.00 MHz if the 919.75–921.75
                MHz and 921.75–927.25 MHz bands and their associated 927.25–927.50 MHz and
                927.50–927.75 MHz narrowband forward links are aggregated.

                5   See § 90.259.

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                                                                                                    47 CFR 90.209(b)(6)
Private Land Mobile Radio Services

                 6 Operations using equipment designed to operate with a 25 kilohertz channel bandwidth may be
                 authorized up to a 20 kilohertz bandwidth unless the equipment meets the Adjacent Channel Power
                 limits of § 90.221 in which case operations may be authorized up to a 22 kilohertz bandwidth.
                 Operations using equipment designed to operate with a 12.5 kilohertz channel bandwidth may be
                 authorized up to an 11.25 kilohertz bandwidth.

           (6)

                 (i)   Beginning January 1, 2011, no new applications for the 150–174 MHz and/or 421–512 MHz
                       bands will be acceptable for filing if the applicant utilizes channels with an authorized
                       bandwidth exceeding 11.25 kHz, unless specified elsewhere or the operations meet the
                       efficiency standards of § 90.203(j)(3).

                 (ii) Beginning January 1, 2011, no modification applications for stations in the 150–174 MHz and/
                      or 421–512 MHz bands that increase the station's authorized interference contour, will be
                      acceptable for filing if the applicant utilizes channels with an authorized bandwidth exceeding
                      11.25 kHz, unless specified elsewhere or the operations meet the efficiency standards of §
                      90.203(j)(3). See § 90.187(b)(2)(iii) and (iv) for interference contour designations and
                      calculations. Applications submitted pursuant to this paragraph must comply with frequency
                      coordination requirements of § 90.175.

           (7) Economic Area (EA)-based licensees in frequencies 817–824/862–869 MHz (813.5–824/858.5–869
               MHz in the counties listed in § 90.614(c)) may exceed the standard channel spacing and authorized
               bandwidth listed in paragraph (b)(5) of this section in any National Public Safety Planning Advisory
               Committee Region when all 800 MHz public safety licensees in the Region have completed band
               reconfiguration consistent with this part. In any National Public Safety Planning Advisory Committee
               Region where the 800 MHz band reconfiguration is incomplete, EA-based licensees in frequencies
               817–821/862–866 MHz (813.5–821/858.5–866 MHz in the counties listed in § 90.614(c)) may
               exceed the standard channel spacing and authorized bandwidth listed in paragraph (b)(5) of this
               section. Upon all 800 MHz public safety licensees in a National Public Safety Planning Advisory
               Committee Region completing band reconfiguration, EA-based 800 MHz SMR licensees in the
               821–824/866–869 MHz band may exceed the channel spacing and authorized bandwidth in
               paragraph (b)(5) of this section. Licensees authorized to exceed the standard channel spacing and
               authorized bandwidth under this paragraph must provide at least 30 days written notice prior to
               initiating such service in the bands listed herein to every 800 MHz public safety licensee with a base
               station in an affected National Public Safety Planning Advisory Committee Region, and every 800
               MHz public safety licensee with a base station within 113 kilometers (70 miles) of an affected
               National Public Safety Planning Advisory Committee Region. Such notice shall include the estimated
               date upon which the EA-based 800 MHz SMR licensee intends to begin operations that exceed the
               channel spacing and authorized bandwidth in paragraph (b)(5) of this section.

           (8) Applicants may begin to license 12.5 kilohertz bandwidth channels in the 809–817/854–862 MHz
               band segment only after the Wireless Telecommunications Bureau and the Public Safety and
               Homeland Security Bureau jointly release a public notice announcing the availability of those
               channels for licensing in a National Public Safety Planning Advisory Committee region.

47 CFR 90.209(b)(8) (enhanced display)                                                                  page 223 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.210
Private Land Mobile Radio Services

[60 FR 37263, July 19, 1995, as amended at 67 FR 41860, June 20, 2002; 68 FR 42314, July 17, 2003; 68 FR 54769, Sept. 18, 2003;
69 FR 39867, July 1, 2004; 69 FR 67837, Nov. 22, 2004; 70 FR 21661, Apr. 27, 2005; 70 FR 34693, June 15, 2005; 72 FR 35194,
June 27, 2007; 73 FR 34201, June 17, 2008; 77 FR 33979, June 8, 2012; 77 FR 61537, Oct. 10, 2012; 81 FR 66832, Sept. 29, 2016;
83 FR 61096, Nov. 27, 2018; 85 FR 43138, July 15, 2020]

Editorial Note:
At 85 FR 43138, July 15, 2020, § 90.610 was amended in the table to paragraph (b)(5) by adding an entry in
numerical order for “896–901/935–940”, however due to an inaccurate amendatory instruction, this amendment
could not be incorporated.

§ 90.210 Emission masks.
Except as indicated elsewhere in this part, transmitters used in the radio services governed by this part must
comply with the emission masks outlined in this section. Unless otherwise stated, per paragraphs (d)(4), (e)(4), and
(o) of this section, measurements of emission power can be expressed in either peak or average values provided
that emission powers are expressed with the same parameters used to specify the unmodulated transmitter carrier
power. For transmitters that do not produce a full power unmodulated carrier, reference to the unmodulated
transmitter carrier power refers to the total power contained in the channel bandwidth. Unless indicated elsewhere
in this part, the table in this section specifies the emission masks for equipment operating under this part.

     (a) Emission Mask A. For transmitters utilizing J3E emission, the carrier must be at least 40 dB below the
         peak envelope power and the power of emissions must be reduced below the output power (P in watts) of
         the transmitter as follows:

           (1) On any frequency removed from the assigned frequency by more than 50 percent, but not more than
               150 percent of the authorized bandwidth: At least 25 dB.

           (2) On any frequency removed from the assigned frequency by more than 150 percent, but not more
               than 250 percent of the authorized bandwidth: At least 35 dB.

           (3) On any frequency removed from the assigned frequency by more than 250 percent of the authorized
               bandwidth: At least 43 + 10 log P dB.

     (b) Emission Mask B. For transmitters that are equipped with an audio low-pass filter, the power of any
         emission must be attenuated below the unmodulated carrier power (P) as follows:

           (1) On any frequency removed from the assigned frequency by more than 50 percent, but not more than
               100 percent of the authorized bandwidth: At least 25 dB.

           (2) On any frequency removed from the assigned frequency by more than 100 percent, but not more
               than 250 percent of the authorized bandwidth: At least 35 dB.

           (3) On any frequency removed from the assigned frequency by more than 250 percent of the authorized
               bandwidth: At least 43 + 10 log (P) dB.

     (c) Emission Mask C. For transmitters that are not equipped with an audio low-pass filter, the power of any
         emission must be attenuated below the unmodulated carrier output power (P) as follows:

           (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 5 kHz, but not more than 10 kHz: At least 83 log (fd/5) dB;

47 CFR 90.210(c)(1) (enhanced display)                                                                         page 224 of 516
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                                                                                                      47 CFR 90.210(c)(2)
Private Land Mobile Radio Services

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 10 kHz, but not more than 250 percent of the authorized bandwidth: At least
               29 log (fd2/11) dB or 50 dB, whichever is the lesser attenuation;

           (3) On any frequency removed from the center of the authorized bandwidth by more than 250 percent of
               the authorized bandwidth: At least 43 + 10 log (P) dB.

           (4) In the 1427–1432 MHz band, licensees are encouraged to take all reasonable steps to ensure that
               unwanted emissions power does not exceed the following levels in the 1400–1427 MHz band:

                 (i)   For stations of point-to-point systems in the fixed service: −45 dBW/27 MHz.

                (ii) For stations in the mobile service: −60 dBW/27 MHz.

     (d) Emission Mask D—12.5 kHz channel bandwidth equipment. For transmitters designed to operate with a
         12.5 kHz channel bandwidth, any emission must be attenuated below the power (P) of the highest
         emission contained within the authorized bandwidth as follows:

           (1) On any frequency from the center of the authorized bandwidth f0 to 5.625 kHz removed from f0: Zero
               dB.

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 5.625 kHz but no more than 12.5 kHz: At least 7.27(fd−2.88 kHz) dB.

           (3) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 12.5 kHz: At least 50 + 10 log (P) dB or 70 dB, whichever is the lesser
               attenuation.

           (4) The reference level for showing compliance with the emission mask shall be established using a
               resolution bandwidth sufficiently wide (usually two or three times the channel bandwidth) to capture
               the true peak emission of the equipment under test. In order to show compliance with the emission
               mask up to and including 50 kHz removed from the edge of the authorized bandwidth, adjust the
               resolution bandwidth to 100 Hz with the measuring instrument in a peak hold mode. A sufficient
               number of sweeps must be measured to insure that the emission profile is developed. If video
               filtering is used, its bandwidth must not be less than the instrument resolution bandwidth. For
               emissions beyond 50 kHz from the edge of the authorized bandwidth, see paragraph (o) of this
               section. If it can be shown that use of the above instrumentation settings do not accurately
               represent the true interference potential of the equipment under test, an alternate procedure may be
               used provided prior Commission approval is obtained.

     (e) Emission Mask E—6.25 kHz or less channel bandwidth equipment. For transmitters designed to operate
         with a 6.25 kHz or less bandwidth, any emission must be attenuated below the power (P) of the highest
         emission contained within the authorized bandwidth as follows:

           (1) On any frequency from the center of the authorized bandwidth f0 to 3.0 kHz removed from f0: Zero
               dB.

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 3.0 kHz but no more than 4.6 kHz: At least 30 + 16.67(fd−3 kHz) or 55 + 10
               log (P) or 65 dB, whichever is the lesser attenuation.

           (3) On any frequency removed from the center of the authorized bandwidth by more than 4.6 kHz: At
               least 55 + 10 log (P) or 65 dB, whichever is the lesser attenuation.

47 CFR 90.210(e)(3) (enhanced display)                                                                   page 225 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.210(e)(4)
Private Land Mobile Radio Services

           (4) The reference level for showing compliance with the emission mask shall be established using a
               resolution bandwidth sufficiently wide (usually two or three times the channel bandwidth) to capture
               the true peak emission of the equipment under test. In order to show compliance with the emission
               mask up to and including 50 kHz removed from the edge of the authorized bandwidth, adjust the
               resolution bandwidth to 100 Hz with the measuring instrument in a peak hold mode. A sufficient
               number of sweeps must be measured to insure that the emission profile is developed. If video
               filtering is used, its bandwidth must not be less than the instrument resolution bandwidth. For
               emissions beyond 50 kHz from the edge of the authorized bandwidth, see paragraph (o) of this
               section. If it can be shown that use of the above instrumentation settings do not accurately
               represent the true interference potential of the equipment under test, an alternate procedure may be
               used provided prior Commission approval is obtained.

     (f) Emission Mask F. For transmitters operating in the 220–222 MHz frequency band, any emission must be
         attenuated below the power (P) of the highest emission contained within the authorized bandwidth as
         follows:

           (1) On any frequency from the center of the authorized bandwidth fo to the edge of the authorized
               bandwidth fe: Zero dB.

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 2 kHz up to and including 3.75 kHz: 30 + 20(fd − 2) dB or 55 + 10 log (P), or
               65 dB, whichever is the lesser attenuation.

           (3) On any frequency beyond 3.75 kHz removed from the center of the authorized bandwidth fd: At least
               55 + 10 log (P) dB.

     (g) Emission Mask G. For transmitters that are not equipped with an audio low-pass filter, the power of any
         emission must be attenuated below the unmodulated carrier power (P) as follows:

           (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 10 kHz, but no more than 250 percent of the authorized bandwidth: At least
               116 log (fd/6.1) dB, or 50 + 10 log (P) dB, or 70 dB, whichever is the lesser attenuation;

           (2) On any frequency removed from the center of the authorized bandwidth by more than 250 percent of
               the authorized bandwidth: At least 43 + 10 log (P) dB.

     (h) Emission Mask H. For transmitters that are not equipped with an audio low-pass filter, the power of any
         emission must be attenuated below the unmodulated carrier power (P) as follows:

           (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of 4 kHz or less: Zero dB.

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 4 kHz, but no more than 8.5 kHz: At least 107 log (fd/4) dB;

           (3) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 8.5 kHz, but no more than 15 kHz: At least 40.5 log (fd/1.16) dB;

           (4) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 15 kHz, but no more than 25 kHz: At least 116 log (fd/6.1) dB;

           (5) On any frequency removed from the center of the authorized bandwidth by more than 25 kHz: At
               least 43 + 10 log (P) dB.

47 CFR 90.210(h)(5) (enhanced display)                                                                 page 226 of 516
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     (i)   Emission Mask I. For transmitters that are equipped with an audio low pass filter, the power of any
           emission must be attenuated below the unmodulated carrier power of the transmitter (P) as follows:

           (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               of more than 6.8 kHz, but no more than 9.0 kHz: At least 25 dB;

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               of more than 9.0 kHz, but no more than 15 kHz: At least 35 dB;

           (3) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               of more than 15 kHz: At least 43 + 10 log (P) dB, or 70 dB, whichever is the lesser attenuation.

     (j)   Emission Mask J. For transmitters that are not equipped with an audio low-pass filter, the power of any
           emission must be attenuated below the unmodulated carrier power of the transmitter (P) as follows:

           (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 2.5 kHz, but no more than 6.25 kHz: At least 53 log (fd/2.5) dB;

           (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 6.25 kHz, but no more than 9.5 kHz: At least 103 log (fd/3.9) dB;

           (3) On any frequency removed from the center of the authorized bandwidth by a displacement frequency
               (fd in kHz) of more than 9.5 kHz: At least 157 log (fd/5.3) dB, or 50 + 10 log (P) dB or 70 dB,
               whichever is the lesser attenuation.

     (k) Emission Mask K —

           (1) Wideband multilateration transmitters. For transmitters authorized under subpart M to provide
               forward or reverse links in a multilateration system in the subbands 904–909.75 MHz,
               921.75–927.25 MHz and 919.75–921.75 MHz, and which transmit an emission occupying more than
               50 kHz bandwidth: in any 100 kHz band, the center frequency of which is removed from the center of
               authorized sub-band(s) by more than 50 percent of the authorized bandwidth, the power of
               emissions shall be attenuated below the transmitter output power, as specified by the following
               equation, but in no case less than 31 dB:

                A = 16 + 0.4 (D−50) + 10 log B (attenuation greater than 66 dB is not required)
           Where:

           A = attenuation (in decibels) below the maximum permitted output power level

           D = displacement of the center frequency of the measurement bandwidth from the center frequency of the
           authorized sub-band, expressed as a percentage of the authorized bandwidth B

           B = authorized bandwidth in megahertz.

           (2) Narrowband forward link transmitters. For LMS multilateration narrowband forward link transmitters
               operating in the 927.25–928 MHz frequency band the power of any emission shall be attenuated
               below the transmitter output power (P) in accordance with following schedule:

           On any frequency outside the authorized sub-band and removed from the edge of the authorized sub-
           band by a displacement frequency (fd in kHz): at least 116 log ((fd + 10)/6.1) dB or 50 + 10 log (P) dB or
           70 dB, whichever is the lesser attenuation.

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Private Land Mobile Radio Services

           (3) Other transmitters. For all other transmitters authorized under subpart M that operate in the 902–928
               MHz band, the peak power of any emission shall be attenuated below the power of the highest
               emission contained within the licensee's sub-band in accordance with the following schedule:

                 (i)   On any frequency within the authorized bandwidth: Zero dB.

                (ii) On any frequency outside the licensee's sub-band edges: 55 + 10 log(P) dB, where (P) is the
                     highest emission (watts) of the transmitter inside the licensee's sub-band.

           (4) In the 902–928 MHz band, the resolution bandwidth of the instrumentation used to measure the
               emission power shall be 100 kHz, except that, in regard to paragraph (2) of this section, a minimum
               spectrum analyzer resolution bandwidth of 300 Hz shall be used for measurement center
               frequencies with 1 MHz of the edge of the authorized subband. The video filter bandwidth shall not
               be less than the resolution bandwidth.

           (5) Emission power shall be measured in peak values.

           (6) The LMS sub-band edges for non-multilateration systems for which emissions must be attenuated
               are 902.00, 904.00, 909.5 and 921.75 MHz.

     (l)   Emission Mask L. For low power transmitters (20 dBm or less) operating in the 4940–4990 MHz
           frequency band, the power spectral density of the emissions must be attenuated below the output power
           of the transmitter as follows:

           (1) On any frequency removed from the assigned frequency between 0–45% of the authorized
               bandwidth (BW): 0 dB.

           (2) On any frequency removed from the assigned frequency between 45–50% of the authorized
               bandwidth: 219 log (% of (BW)/45) dB.

           (3) On any frequency removed from the assigned frequency between 50–55% of the authorized
               bandwidth: 10 + 242 log (% of (BW)/50) dB.

           (4) On any frequency removed from the assigned frequency between 55–100% of the authorized
               bandwidth: 20 + 31 log (% of (BW)/55) dB attenuation.

           (5) On any frequency removed from the assigned frequency between 100–150% of the authorized
               bandwidth: 28 + 68 log (% of (BW)/100) dB attenuation.

           (6) On any frequency removed from the assigned frequency above 150% of the authorized bandwidth: 40
               dB.

           (7) The zero dB reference is measured relative to the highest average power of the fundamental
               emission measured across the designated channel bandwidth using a resolution bandwidth of at
               least one percent of the occupied bandwidth of the fundamental emission and a video bandwidth of
               30 kHz. The power spectral density is the power measured within the resolution bandwidth of the
               measurement device divided by the resolution bandwidth of the measurement device. Emission
               levels are also based on the use of measurement instrumentation employing a resolution bandwidth
               of at least one percent of the occupied bandwidth.

     (m) Emission Mask M. For high power transmitters (greater that 20 dBm) operating in the 4940–4990 MHz
         frequency band, the power spectral density of the emissions must be attenuated below the output power
         of the transmitter as follows:

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                                                                                                   47 CFR 90.210(m)(1)
Private Land Mobile Radio Services

           (1) On any frequency removed from the assigned frequency between 0–45% of the authorized
               bandwidth (BW): 0 dB.

           (2) On any frequency removed from the assigned frequency between 45–50% of the authorized
               bandwidth: 568 log (% of (BW)/45) dB.

           (3) On any frequency removed from the assigned frequency between 50–55% of the authorized
               bandwidth: 26 + 145 log (% of BW/50) dB.

           (4) On any frequency removed from the assigned frequency between 55–100% of the authorized
               bandwidth: 32 + 31 log (% of (BW)/55) dB.

           (5) On any frequency removed from the assigned frequency between 100–150% of the authorized
               bandwidth: 40 + 57 log (% of (BW)/100) dB.

           (6) On any frequency removed from the assigned frequency between above 150% of the authorized
               bandwidth: 50 dB or 55 + 10 log (P) dB, whichever is the lesser attenuation.

           (7) The zero dB reference is measured relative to the highest average power of the fundamental
               emission measured across the designated channel bandwidth using a resolution bandwidth of at
               least one percent of the occupied bandwidth of the fundamental emission and a video bandwidth of
               30 kHz. The power spectral density is the power measured within the resolution bandwidth of the
               measurement device divided by the resolution bandwidth of the measurement device. Emission
               levels are also based on the use of measurement instrumentation employing a resolution bandwidth
               of at least one percent of the occupied bandwidth.

                 Note to paragraph (m): Low power devices may as an option, comply with paragraph (m).

     (n) Other frequency bands. Transmitters designed for operation under this part on frequencies other than
         listed in this section must meet the emission mask requirements of Emission Mask B. Equipment
         operating under this part on frequencies allocated to but shared with the Federal Government, must meet
         the applicable Federal Government technical standards.

     (o) Instrumentation. The reference level for showing compliance with the emission mask shall be established,
         except as indicated in §§ 90.210 (d), (e), and (k), using standard engineering practices for the modulation
         characteristic used by the equipment under test. When measuring emissions in the 150–174 MHz and
         421–512 MHz bands the following procedures will apply. A sufficient number of sweeps must be
         measured to insure that the emission profile is developed. If video filtering is used, its bandwidth must not
         be less than the instrument resolution bandwidth. For frequencies more than 50 kHz removed from the
         edge of the authorized bandwidth a resolution of at least 100 kHz must be used for frequencies below
         1000 MHz. Above 1000 MHz the resolution bandwidth of the instrumentation must be at least 1 MHz. If it
         can be shown that use of the above instrumentation settings do not accurately represent the true
         interference potential of the equipment under test, then an alternate procedure may be used provided
         prior Commission approval is obtained.

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                    Table 1 to § 90.210—Applicable Emission Masks

                                                Mask for equipment            Mask for equipment
         Frequency band (MHz)                     with audio low               without audio low
                                                    pass filter                    pass filter
 Below 251                             A or B                        A or C
 25–50                                 B                             C
 72–76                                 B                             C
 150–1742                              B, D, or E                    C, D or E
 150 paging only                       B                             C
 220–222                               F                             F
 421–5122 5                            B, D, or E                    C, D, or E
 450 paging only                       B                             G
 806–809/851–8546                      B                             H
 809–824/854–86935                     B, D                          D, G.
 896–901/935–940                       I                             J
 902–928                               K                             K
 929–930                               B                             G
 4940–4990 MHz                         L or M                        L or M
 5895–59254
 All other bands                       B                             C

1Equipment using single sideband J3E emission must meet the requirements of Emission Mask A.
Equipment using other emissions must meet the requirements of Emission Mask B or C, as
applicable.

2Equipment designed to operate with a 25 kHz channel bandwidth must meet the requirements of
Emission Mask B or C, as applicable. Equipment designed to operate with a 12.5 kHz channel
bandwidth must meet the requirements of Emission Mask D, and equipment designed to operate
with a 6.25 kHz channel bandwidth must meet the requirements of Emission Mask E.

3Equipment used in this licensed to EA or non-EA systems shall comply with the emission mask
provisions of § 90.691 of this chapter.

4   DSRCS Roadside Units in the 5895–5925 MHz band are governed under subpart M of this part.

5Equipment designed to operate on 25 kilohertz bandwidth channels must meet the requirements
of either Emission Mask B or G, whichever is applicable, while equipment designed to operate on
12.5 kilohertz bandwidth channels must meet the requirements of Emission Mask D. Equipment
designed to operate on 25 kilohertz bandwidth channels may alternatively meet the Adjacent
Channel Power limits of § 90.221.

47 CFR 90.210(o) (enhanced display)                                                                 page 230 of 516
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                                                                                                                   47 CFR 90.212
Private Land Mobile Radio Services

6Transmitters utilizing analog emissions that are equipped with an audio low-pass filter must meet
Emission Mask B. All transmitters utilizing digital emissions and those transmitters using analog
emissions without an audio low-pass filter must meet Emission Mask H.

[60 FR 37264, July 19, 1995]

Editorial Notes: 1. For FEDERAL REGISTER citations affecting § 90.210, see the List of CFR Sections Affected,
which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.
2. At 85 FR 43139, July 16, 2020, § 90.610 was amended in the table by adding an entry in numerical order for
“896–901/935–940”, however due to an inaccurate amendatory instruction, this amendment could not be
incorporated.

§ 90.212 Provisions relating to the use of scrambling devices and digital voice modulation.
     (a) Analog scrambling techniques may be employed at any station authorized the use of A3E, F3E, or G3E
         emission, subject to the provision of paragraph (d) of this section.

     (b) The use of digital scrambling techniques or digital voice modulation requires the specific authorization of
         F1E or G1E emission, and these emissions will only be authorized subject to the provisions of paragraph
         (d) of this section.

     (c) The transmission of any non-voice information or data under the authorization of F1E or G1E emission is
         prohibited. However, stations authorized the use of F1E or G1E emission may also be authorized F1D, F2D,
         G1D or G2D emission for non-voice communication purposes, pursuant to § 90.207(l).

     (d) Station identification shall be transmitted in the unscrambled analog mode (clear voice) or Morse code in
         accordance with the provisions of § 90.425. All digital encoding and digital modulation shall be disabled
         during station identification.

[43 FR 54791, Nov. 22, 1978, as amended at 47 FR 15340, Apr. 9, 1982; 49 FR 48711, Dec. 14, 1984; 72 FR 35195, June 27, 2007]

§ 90.213 Frequency stability.
     (a) Unless noted elsewhere, transmitters used in the services governed by this part must have a minimum
         frequency stability as specified in the following table.

                               Table 1 to § 90.213(a)—Minimum Frequency Stability

           [Parts per million (ppm)]

                                                                                  Mobile stations
               Frequency range           Fixed and base
                                                                  Over 2 watts output           2 watts or less output
                    (MHz)                   stations
                                                                        power                           power
            Below 25                                123   100                       100                              200
            25–50                                          20                           20                               50
            72–76                                             5                                                          50
                                                       5 11                             6                          46
            150–174                                           5                             5                            50
            216–220                                       1.0                                                        1.0

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                                                                                                                47 CFR 90.213(a)
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                                                                                  Mobile stations
               Frequency range           Fixed and base
                                                                  Over 2 watts output           2 watts or less output
                    (MHz)                   stations
                                                                        power                           power
           220–22212                                        0.1                     1.5                              1.5
                                                  7 11 14                               8                                8
           421–512                                          2.5                             5                                5
                                                      14
           806–809                                          1.0                     1.5                              1.5
                                                      14
           809–824                                          1.5                     2.5                              2.5
           851–854                                          1.0                     1.5                              1.5
           854–869                                          1.5                     2.5                              2.5
                                                      14
           896–901                                          0.1                     1.5                              1.5
           902–928                                          2.5                     2.5                              2.5
           902–92813                                        2.5                     2.5                              2.5
           929–930                                          1.5
           935–940                                          0.1                     1.5                              1.5
                                                      9
           1427–1435                                      300                       300                              300
           Above   245010

           1
            Fixed and base stations with over 200 watts transmitter power must have a frequency stability of
           50 ppm except for equipment used in the Public Safety Pool where the frequency stability is 100
           ppm.

           2
            For single sideband operations below 25 MHz, the carrier frequency must be maintained within 50
           Hz of the authorized carrier frequency.

           3
             Travelers information station transmitters operating from 530–1700 kHz and transmitters
           exceeding 200 watts peak envelope power used for disaster communications and long distance
           circuit operations pursuant to §§ 90.242 and 90.264 must maintain the carrier frequency to within
           20 Hz of the authorized frequency.

           4 Stations operating in the 154.45 to 154.49 MHz or the 173.2 to 173.4 MHz bands must have a
           frequency stability of 5 ppm.

           5 In the 150–174 MHz band, fixed and base stations with a 12.5 kHz channel bandwidth must have
           a frequency stability of 2.5 ppm. Fixed and base stations with a 6.25 kHz channel bandwidth must
           have a frequency stability of 1.0 ppm.

           6In the 150–174 MHz band, mobile stations designed to operate with a 12.5 kHz channel
           bandwidth or designed to operate on a frequency specifically designated for itinerant use or
           designed for low-power operation of two watts or less, must have a frequency stability of 5.0 ppm.
           Mobile stations designed to operate with a 6.25 kHz channel bandwidth must have a frequency
           stability of 2.0 ppm.

           7 In the 421–512 MHz band, fixed and base stations with a 12.5 kHz channel bandwidth must have
           a frequency stability of 1.5 ppm. Fixed and base stations with a 6.25 kHz channel bandwidth must
           have a frequency stability of 0.5 ppm.

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                                                                                                               47 CFR 90.213(b)
Private Land Mobile Radio Services

               8In the 421–512 MHz band, mobile stations designed to operate with a 12.5 kHz channel
               bandwidth must have a frequency stability of 2.5 ppm. Mobile stations designed to operate with a
               6.25 kHz channel bandwidth must have a frequency stability of 1.0 ppm.

               9Fixed stations with output powers above 120 watts and necessary bandwidth less than 3 kHz
               must operate with a frequency stability of 100 ppm. Fixed stations with output powers less than
               120 watts and using time-division multiplex, must operate with a frequency stability of 500 ppm.

               10 Frequency stability for DSRCS equipment in the 5895–5925 MHz band is specified in subpart M
               of this part. For all other equipment, frequency stability is to be specified in the station
               authorization.

               11 Paging transmitters operating on paging-only frequencies must operate with frequency stability
               of 5 ppm in the 150–174 MHz band and 2.5 ppm in the 421–512 MHz band.

               12Mobile units may utilize synchronizing signals from associated base stations to achieve the
               specified carrier stability.

               13 Fixed non-multilateration transmitters with an authorized bandwidth that is more than 40 kHz
               from the band edge, intermittently operated hand-held readers, and mobile transponders are not
               subject to frequency tolerance restrictions.

               14 Control stations may operate with the frequency tolerance specified for associated mobile
               frequencies.

          (b) For the purpose of determining the frequency stability limits, the power of a transmitter is considered to
              be the maximum rated output power as specified by the manufacturer.

[60 FR 37266, July 19, 1995, as amended at 61 FR 4235, Feb. 5, 1996; 61 FR 18986, Apr. 30, 1996; 61 FR 38403, July 24, 1996; 62
FR 2040, Jan. 15, 1997; 62 FR 18927, Apr. 17, 1997; 67 FR 41860, June 20, 2002; 69 FR 46443, Aug. 3, 2004; 69 FR 67838, Nov.
22, 2004; 85 FR 43139, July 15, 2020; 86 FR 23297, May 3, 2021]

Editorial Note: At 85 FR 43139, July 16, 2020, § 90.613 was amended in the table by adding entries in numerical
order for “896–901” and “935–940”, however due to an inaccurate amendatory instruction, this amendment could
not be incorporated.

§ 90.214 Transient frequency behavior.
Transmitters designed to operate in the 150–174 MHz and 421–512 MHz frequency bands must maintain transient
frequencies within the maximum frequency difference limits during the time intervals indicated:

                                     Maximum                             All equipment
          Time intervals1 2          frequency
                                                          150 to 174 MHz               421 to 512 MHz
                                     difference3
               Transient Frequency Behavior for Equipment Designed to Operate on 25 kHz Channels
      4
 t1                              ±25.0 kHz           5.0 ms                      10.0 ms

47 CFR 90.214 (enhanced display)                                                                                page 233 of 516
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                                                                                                            47 CFR 90.215
Private Land Mobile Radio Services

                                      Maximum                            All equipment
          Time intervals1 2           frequency
                                                           150 to 174 MHz            421 to 512 MHz
                                      difference3
 t2                               ±12.5 kHz           20.0 ms                   25.0 ms
      4
 t3                               ±25.0 kHz           5.0 ms                    10.0 ms
              Transient Frequency Behavior for Equipment Designed to Operate on 12.5 kHz Channels
      4
 t1                               ±12.5 kHz           5.0 ms                    10.0 ms
 t2                               ±6.25 kHz           20.0 ms                   25.0 ms
 t 34                             ±12.5 kHz           5.0 ms                    10.0 ms
              Transient Frequency Behavior for Equipment Designed to Operate on 6.25 kHz Channels
 t1   4                           ±6.25 kHz           5.0 ms                    10.0 ms
 t2                               ±3.125 kHz          20.0 ms                   25.0 ms
      4
 t3                               ±6.25 kHz           5.0 ms                    10.0 ms

1
 on is the instant when a 1 kHz test signal is completely suppressed, including any capture time due
to phasing.

t1 is the time period immediately following ton.

t2 is the time period immediately following t1.

t3 is the time period from the instant when the transmitter is turned off until toff.

toff is the instant when the 1 kHz test signal starts to rise.

2During the time from the end of t2 to the beginning of t3, the frequency difference must not
exceed the limits specified in § 90.213.

3   Difference between the actual transmitter frequency and the assigned transmitter frequency.

4 If the transmitter carrier output power rating is 6 watts or less, the frequency difference during
this time period may exceed the maximum frequency difference for this time period.

[62 FR 2040, Jan. 15, 1997]

§ 90.215 Transmitter measurements.
          (a) The licensee of each station shall employ a suitable procedure to determine that the carrier frequency of
              each transmitter authorized to operate with an output power in excess of two watts is maintained within
              the tolerence prescribed in § 90.213. This determination shall be made, and the results entered in the
              station records in accordance with the following:

               (1) When the transmitter is initially installed;

               (2) When any change is made in the transmitter which may affect the carrier frequency or its stability.

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                                                                                                       47 CFR 90.215(b)
Private Land Mobile Radio Services

     (b) The licensee of each station shall employ a suitable procedure to determine that each transmitter
         authorized to operate with an output power in excess of two watts does not exceed the maximum figure
         specified on the current station authorization. On authorizations stating only the input power to the final
         radiofrequency stage, the maximum permissible output power is 75 percent for frequencies below 25
         MHz and 60 percent of the input power for frequencies above 25 MHz. If a non-DC final radiofrequency
         stage is utilized, then the output power shall not exceed 75 percent of the input power. This determination
         shall be made, and the results thereof entered into the station records, in accordance with the following:

           (1) When the transmitter is initially installed;

           (2) When any change is made in the transmitter which may increase the transmitter power input.

     (c) The licensee of each station shall employ a suitable procedure to determine that the modulation of each
         transmitter, which is authorized to operate with an output power in excess of two watts, does not exceed
         the limits specified in this part. This determination shall be made and the following results entered in the
         station records, in accordance with the following:

           (1) When the transmitter is initially installed;

           (2) When any change is made in the transmitter which may affect the modulation characteristics.

     (d) The determinations required by paragraphs (a), (b), and (c) of this section may, at the opinion of the
         licensee, be made by a qualified engineering measurement service, in which case the required record
         entries shall show the name and address of the engineering measurement service as well as the name of
         the person making the measurements.

     (e) In the case of mobile transmitters, the determinations required by paragraphs (a) and (c) of this section
         may be made at a test or service bench: Provided, That the measurements are made under load
         conditions equivalent to actual operating conditions; and provided further, that after installation in the
         mobile unit the transmitter is given a routine check to determine that it is capable of being received
         satisfactorly by an appropriate receiver.

§ 90.217 Exemption from technical standards.
Except as noted herein, transmitters used at stations licensed below 800 MHz on any frequency listed in subparts B
and C of this part or licensed on a business category channel above 800 MHz which have an output power not
exceeding 120 milliwatts are exempt from the technical requirements set out in this subpart, but must instead
comply with the following:

     (a) For equipment designed to operate with a 25 kHz channel bandwidth, the sum of the bandwidth occupied
         by the emitted signal plus the bandwidth required for frequency stability shall be adjusted so that any
         emission appearing on a frequency 40 kHz or more removed from the assigned frequency is attenuated at
         least 30 dB below the unmodulated carrier.

     (b) For equipment designed to operate with a 12.5 kHz channel bandwidth, the sum of the bandwidth
         occupied by the emitted signal plus the bandwidth required for frequency stability shall be adjusted so
         that any emission appearing on a frequency 25 kHz or more removed from the assigned frequency is
         attenuated at least 30 dB below the unmodulated carrier.

     (c) For equipment designed to operate with a 6.25 kHz channel bandwidth, the sum of the bandwidth
         occupied by the emitted signal plus the bandwidth required for frequency stability shall be adjusted so
         that any emission appearing on a frequency 12.5 kHz or more removed from the assigned frequency is
         attenuated at least 30 dB below the unmodulated carrier.

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                                                                                                               47 CFR 90.217(d)
Private Land Mobile Radio Services

     (d) Transmitters may be operated in the continuous carrier transmit mode.

     (e) Transmitters used for wireless microphone operations and operating on frequencies allocated for Federal
         use must comply with the requirements of § 90.265(b).

[60 FR 37267, July 19, 1995, as amended at 62 FR 2041, Jan. 15, 1997; 62 FR 18927, Apr. 17, 1997; 70 FR 21661, Apr. 27, 2005]

§ 90.219 Use of signal boosters.
This section contains technical and operational rules allowing the use of signal boosters in the Private Land Mobile
Radio Services (PLMRS). Rules for signal booster operation in the Commercial Mobile Radio Services under part 90
are found in § 20.21 of this chapter.

     (a) Definitions. The definitions in this paragraph apply only to the rules in this section.

         Class A signal booster. A signal booster designed to retransmit signals on one or more specific channels. A
               signal booster is deemed to be a Class A signal booster if none of its passbands exceed 75 kHz.

         Class B signal booster. A signal booster designed to retransmit any signals within a wide frequency band. A
               signal booster is deemed to be a Class B signal booster if it has a passband that exceeds 75 kHz.

         Coverage area of a PLMRS station. All locations within the normal reliable operating range (service contour)
               of a PLMRS station.

         Deploy a signal booster. Install and/or initially adjust a signal booster.

         Distributed Antenna System (DAS). A network of spatially separated antenna nodes connected to a
                common source via a transport medium that provides wireless service within a geographic area or
                structure.

         Operate a signal booster. Maintain operational control over, and responsibility for the proper functioning of,
               a signal booster.

         Signal booster. A device or system that automatically receives, amplifies, and retransmits signals from
               wireless stations into and out of building interiors, tunnels, shielded outdoor areas and other
               locations where these signals would otherwise be too weak for reliable communications. Signal
               booster systems may contain both Class A and Class B signal boosters as components.

     (b) Authority to operate. PLMRS licensees for stations operating on assigned channels higher than 150 MHz
         may operate signal boosters, limited to the service band for which they are authorized, as needed
         anywhere within the PLMRS stations' service contour, but may not extend the stations' service contour.

           (1) PLMRS licensees may also consent to operation of signal boosters by non-licensees (such as a
               building owner or a signal booster installation contractor) within their service contour and across
               their applicable frequencies, but must maintain a reasonable level of control over these operations in
               order to resolve interference problems.

                 (i)   Non-licensees seeking to operate signal boosters must obtain the express consent of the
                       licensee(s) of the frequencies for which the device or system is intended to amplify. The
                       consent must be maintained in a recordable format that can be presented to an FCC
                       representative or other relevant licensee investigating interference.

47 CFR 90.219 (enhanced display)                                                                                page 236 of 516
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                                                                                                            47 CFR 90.219
Private Land Mobile Radio Services

                 (ii) Consent is not required from third party (unintended) licensees whose signals are incidentally
                      retransmitted. However, signal booster operation is on a non-interference basis and operations
                      may be required to cease or alter the operating parameters due to a request from an FCC
                      representative or a licensee's request to resolve interference.

           (2) [Reserved]

     (c) Licensee responsibility; interference. PLMRS licensees that operate signal boosters are responsible for
         their proper operation, and are responsible for correcting any harmful interference that signal booster
         operation may cause to other licensed communications services. Normal co-channel transmissions are
         not considered to be harmful interference. Licensees are required to resolve interference problems
         pursuant to § 90.173(b). Licensees shall act in good faith regarding the operation of signal boosters and
         in the resolution of interference due to signal booster operation. Licensees who are unable to determine
         the location or cause of signal booster interference may seek assistance from the FCC to resolve such
         problems.

     (d) Deployment rules. Deployment of signal boosters must be carried out in accordance with the rules in this
         paragraph.

           (1) Signal boosters may be used to improve coverage in weak signal areas only.

           (2) Signal boosters must not be used to extend PLMRS stations' normal operating range.

           (3)

                 (i)   Except as set forth in paragraph (d)(3)(ii) of this section, signal boosters must be deployed such
                       that the radiated power of each retransmitted channel, on the forward link and on the reverse
                       link, does not exceed 5 Watts effective radiated power (ERP).

                 (ii) Railroad licensees may operate Class A signal boosters transmitting on a single channel with
                      up to 30 Watts ERP on frequencies 452/457.9000 to 452/457.96875 MHz in areas where
                      communication between the front and rear of trains is unsatisfactory due to distance or
                      intervening terrain barriers.

           (4) Class B signal boosters may be deployed only at fixed locations; mobile operation of Class B signal
               boosters is prohibited after November 1, 2014.

           (5) Class B signal booster installations must be registered in the FCC signal booster database that can
               be accessed at the following URL: www.fcc.gov/signal-boosters/registration.

           (6) Good engineering practice must be used in regard to the radiation of intermodulation products and
               noise, such that interference to licensed communications systems is avoided. In the event of
               harmful interference caused by any given deployment, the FCC may require additional attenuation or
               filtering of the emissions and/or noise from signal boosters or signal booster systems, as necessary
               to eliminate the interference.

                 (i)   In general, the ERP of intermodulation products should not exceed −30 dBm in 10 kHz
                       measurement bandwidth.

                 (ii) In general, the ERP of noise within the passband should not exceed −43 dBm in 10 kHz
                      measurement bandwidth.

                 (iii) In general, the ERP of noise on spectrum more than 1 MHz outside of the passband should not
                       exceed −70 dBm in a 10 kHz measurement bandwidth.

47 CFR 90.219 (enhanced display)                                                                          page 237 of 516
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                                                                                                         47 CFR 90.219
Private Land Mobile Radio Services

           (7) Signal booster passbands are limited to the service band or bands for which the operator is
               authorized. In general, signal boosters should utilize the minimum passband that is sufficient to
               accomplish the purpose. Except for distributed antenna systems (DAS) installed in buildings, the
               passband of a Class B booster should not encompass both commercial services (such as ESMR and
               Cellular Radiotelephone) and part 90 Land Mobile and Public Safety Services.

     (e) Device Specifications. In addition to the general rules for equipment certification in § 90.203(a)(2) and
         part 2, subpart J of this chapter, a signal booster must also meet the rules in this paragraph.

           (1) The output power capability of a signal booster must be designed for deployments providing a
               radiated power not exceeding 5 Watts ERP for each retransmitted channel.

           (2) The noise figure of a signal booster must not exceed 9 dB in either direction.

           (3) Spurious emissions from a signal booster must not exceed −13 dBm within any 100 kHz
               measurement bandwidth.

           (4) A signal booster must be designed such that all signals that it retransmits meet the following
               requirements:

                 (i)   The signals are retransmitted on the same channels as received. Minor departures from the
                       exact provider or reference frequencies of the input signals are allowed, provided that the
                       retransmitted signals meet the requirements of § 90.213.

                (ii) There is no change in the occupied bandwidth of the retransmitted signals.

                (iii) The retransmitted signals continue to meet the unwanted emissions limits of § 90.210
                      applicable to the corresponding received signals (assuming that these received signals meet
                      the applicable unwanted emissions limits by a reasonable margin).

           (5) On or after March 1, 2014, a signal booster must be labeled to indicate whether it is a Class A or
               Class B device, and the label must include the following advisory

           (1) In on-line point-of-sale marketing materials,

           (2) In any print or on-line owner's manual and installation instructions,

           (3) On the outside packaging of the device, and

           (4) On a label affixed to the device:

“WARNING. This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and QUALIFIED
INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to operate this device. You
MUST register Class B signal boosters (as defined in 47 CFR 90.219) online at www.fcc.gov/signal-boosters/
registration. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of
$100,000 for each continuing violation.”

[78 FR 21564, Apr. 12, 2013, as amended at 83 FR 61097, Nov. 27, 2018]

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47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.221
Private Land Mobile Radio Services

§ 90.221 Adjacent channel power limits.
     (a) For the frequency bands indicated below, operations using equipment designed to operate with a 25 kHz
         channel bandwidth may be authorized up to a 22 kHz bandwidth if the equipment meets the adjacent
         channel power (ACP) limits below. The table specifies a value for the ACP as a function of the
         displacement from the channel center frequency and a measurement bandwidth of 18 kHz.

     (b)

           (1) Maximum adjacent power levels for frequencies in the 450–470 MHz band:

                    Frequency       Maximum ACP (dBc) for devices 1 watt and    Maximum ACP (dBc) for devices above 1
                      offset                        less                                       watt
                  25 kHz                                             −55 dBc                                  −60 dBc
                  50 kHz                                             −70 dBc                                  −70 dBc
                  75 kHz                                             −70 dBc                                  −70 dBc

           (2) In any case, no requirement in excess of −36 dBm shall apply.

     (c)

           (1) Maximum adjacent power levels for frequencies in the 809–824/854–869 MHz band:

                   Frequency       Maximum ACP (dBc) for devices less than     Maximum ACP (dBc) for devices 15 watts
                     offset                     15 watts                                   and above
                  25 kHz                                          −55 dBc                                     −55 dBc
                  50 kHz                                          −65 dBc                                     −65 dBc
                  75 kHz                                          −65 dBc                                     −70 dBc

           (2) In any case, no requirement in excess of −36 dBm shall apply.

     (d) On any frequency removed from the assigned frequency by more than 75 kHz, the attenuation of any
         emission must be at least 43 + 10 log (Pwatts) dB.

[77 FR 61538, Oct. 10, 2012]

§ 90.223 RF exposure.
Licensees and manufacturers shall ensure compliance with the Commission's radio frequency exposure
requirements in §§ 1.1307(b), 2.1091, and 2.1093 of this chapter, as appropriate. Applications for equipment
authorization of mobile or portable devices operating under this section must contain a statement confirming
compliance with these requirements. Technical information showing the basis for this statement must be
submitted to the Commission upon request.

[85 FR 18151, Apr. 1, 2020]

Subpart J—Non-Voice and Other Specialized Operations

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                                                                                                                 47 CFR 90.231
Private Land Mobile Radio Services

§ 90.231 Scope.
This subpart sets forth requirements and standards for licensing and operation of non-voice and other specialized
radio uses (other than radiolocation). Such uses include secondary signaling, telemetry, radioteleprinter,
radiofacsimile, automatic vehicle monitoring (AVM), radio call box, relay, vehicular repeater, and control station
operations.

§ 90.233 Base/mobile non-voice operations.
The use of A1D, A2D, F1D, F2D, G1D, or G2D emission may be authorized to base/mobile operations in accordance
with the following limitations and requirements.

     (a) Licensees employing non-voice communications are not relieved of their responsibility to cooperate in the
         shared use of land mobile radio channels. See also §§ 90.403 and 90.173(a) and (b).

     (b) Authorization for non-voice emission may be granted only on frequencies subject to the coordination
         requirements set forth in § 90.175. Non-voice operations on frequencies not subject to these
         requirements are permitted only a secondary basis to voice communications.

     (c) Provisions of this section do not apply to authorizations for paging, telemetry, radiolocation, automatic
         vehicle monitoring systems (AVM), radioteleprinter, radio call box operations, or authorizations granted
         pursuant to subpart T of this part.

[48 FR 2794, Feb. 3, 1983, as amended at 49 FR 48711, Dec. 14, 1984; 56 FR 19602, Apr. 29, 1991; 72 FR 35195, June 27, 2007]

§ 90.235 Secondary fixed signaling operations.
Fixed operations may, subject to the following conditions, be authorized on a secondary basis for voice, tone or
impulse signaling on a licensee's mobile service frequency(ies) above 25 MHz within the area normally covered by
the licensee's mobile system. Voice signaling will be permitted only in the Public Safety Pool.

     (a) The bandwidth shall not exceed that authorized to the licensee for the primary operations on the
         frequency concerned.

     (b) The output power shall not exceed 30 watts at the remote site.

     (c) A1D, A2D, F1D, F2D, G1D and G2D emissions may be authorized. In the Police Radio Service, A3E, F1E,
         F2E, F3E, G1E, G2E, or G3E emissions may also be authorized.

     (d) Except for those systems covered under paragraph (e) of this section, the maximum duration of any non-
         voice signaling transmission shall not exceed 2 seconds and shall not be repeated more than 3 times.
         Signaling transmissions may be staggered at any interval or may be continuous. In the Public Safety Pool,
         the maximum duration of any voice signaling transmission shall not exceed 6 seconds and shall not be
         repeated more than 3 times.

     (e) Until December 31, 1999, for systems in the Public Safety Pool authorized prior to June 20, 1975, and
         Power and Petroleum licensees as defined in § 90.7 authorized prior to June 1, 1976, the maximum
         duration of any signaling transmission shall not exceed 6 seconds and shall not be repeated more than 5
         times. For Power licensees authorized between June 1, 1976, and August 14, 1989, signaling duration
         shall not exceed 2 seconds and shall not be repeated more than 5 times. Such systems include existing

47 CFR 90.235(e) (enhanced display)                                                                            page 240 of 516
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                                                                                                              47 CFR 90.235(f)
Private Land Mobile Radio Services

           facilities and additional facilities which may be authorized as a clear and direct expansion of existing
           facilities. After December 31, 1999, all signaling systems shall be required to comply with the 2 second
           message duration and 3 message repetition requirements.

     (f) Systems employing automatic interrogation shall be limited to non-voice techniques and shall not be
         activated for this purpose more than 10 seconds out of any 60 second period. This 10 second timeframe
         includes both transmit and response times.

     (g) Automatic means shall be provided to deactivate the transmitter in the event the r.f. carrier remains on for
         a period in excess of 3 minutes or if a transmission for the same signaling function is repeated
         consecutively more than five times.

     (h) Fixed stations authorized pursuant to the provisions of this section are exempt from the requirements of
         §§ 90.137(b), 90.425, and 90.429.

     (i)   Base, mobile, or mobile relay stations may transmit secondary signaling transmissions to receivers at
           fixed locations subject to the conditions set forth in this section.

     (j)   Under the provisions of this section, a mobile service frequency may not be used exclusively for
           secondary signaling.

     (k) The use of secondary signaling will not be considered in whole or in part as a justification for authorizing
         additional frequencies in a licensee's land mobile radio system.

     (l)   Secondary fixed signaling operations conducted in accordance with the provisions of §§ 90.317(a),
           90.557 and 90.637 are exempt from the foregoing provisions of this section.

[54 FR 28679, July 7, 1989, as amended at 57 FR 34693, Aug. 6, 1992; 58 FR 30996, May 28, 1993; 60 FR 50123, Sept. 28, 1995;
62 FR 18927, Apr. 17, 1997; 72 FR 35195, June 27, 2007; 72 FR 44424, Aug. 8, 2007; 79 FR 39339, July 10, 2014]

§ 90.237 Interim provisions for operation of radioteleprinter and radiofacsimile devices.
These provisions authorize and govern the use of radioteleprinter and radiofacsimile devices for base station use
(other than on mobile-only or paging-only frequencies) in all radio pools and services except Radiolocation in this
part.

     (a) Information must be submitted with an application to establish that the minimum separation between a
         proposed radioteleprinter or radiofacsimile base station and the nearest co-channel base station of
         another licensee operating a voice system is 120 km (75 mi) for a single frequency mode of operation, or
         56 km (35 mi) for two frequency mode of operation. Where this minimum mileage separation cannot be
         achieved, either agreement to the use of F1B, F2B, F3C, G1B, G2B or G3C emission must be received from
         all existing co-channel licensees using voice emission within the applicable mileage limits, or if
         agreement was not received, the licensee of the radioteleprinter or radiofacsimile system is responsible
         for eliminating any interference with preexisting voice operations. New licensees of voice operations will
         be expected to share equally any frequency occupied by established radioteleprinter or radiofacsimile
         operations.

     (b) [Reserved]

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                                                                                                              47 CFR 90.237(c)
Private Land Mobile Radio Services

     (c) Transmitters certificated under this part for use of G3E or F3E emission may also be used for F1B, F2B,
         F3C, G1B, G2B or G3C emission for radioteleprinter or radiofacsimile, provided the keying signal is passed
         through the low pass audio frequency filter required for G3E or F3E emission. The transmitter must be so
         adjusted and operated that the instantaneous frequency deviation does not exceed the maximum value
         allowed for G3E or F3E.

     (d) Frequencies will not be assigned exclusively for F1B, F2B, F3C, G1B, G2B or G3C emission for
         radioteleprinter or radiofacsimile (except where specifically provided for in the frequency limitations).

     (e) The requirements in this part applicable to the use of G3E or F3E emission are also applicable to the use
         of F1B, F2B, F3C, G1B, G2B or G3C emission for radioteleprinter and radiofacsimile transmissions.

     (f) The station identification required by § 90.425 must be given by voice or Morse code.

     (g) For single sideband operations in accordance with § 90.266, transmitters certified under this part for use
         of J3E emission may also be used for A2B and F2B emissions for radioteleprinter transmissions.
         Transmitters certified under this part for use of J3E emission in accordance with §§ 90.35(c)(1)(A),
         90.35(c)(1)(B), 90.35(c)(1)(C) and 90.257(a) may also be used for A1B, A2B, F1B, F2B, J2B, and A3C
         emissions to provide standby backup circuits for operational telecommunications circuits which have
         been disrupted, where so authorized in other sections of this part.

[43 FR 54791, Nov. 22, 1978, as amended at 49 FR 48712, Dec. 14, 1984; 51 FR 14998, Apr. 22, 1986; 62 FR 18927, Apr. 17, 1997;
63 FR 36610, July 7, 1998; 63 FR 68965, Dec. 14, 1998; 72 FR 35195, June 27, 2007]

§ 90.238 Telemetry operations.
The use of telemetry is authorized under this part on the following frequencies.

     (a) 72–76 MHz (in accordance with § 90.257 and subject to the rules governing the use of that band).

     (b) 154.45625, 154.46375, 154.47125, and 154.47875 MHz (subject to the rules governing the use of those
         frequencies).

     (c) 173.20375, 173.210, 173.2375, 173.2625, 173.2875, 173.3125, 173.3375, 173.3625, 173.390, and
         173.39625 MHz (subject to the rules governing the use of those frequencies).

     (d) 216–220 and 1427–1435 MHz (as available in the Public Safety and Industrial/Business Pools and in
         accordance with § 90.259).

     (e) In the 450–470 MHz band, telemetry operations will be authorized on a secondary basis with a transmitter
         output power not to exceed 2 watts on frequencies subject to § 90.20(d)(27) or § 90.35(c)(30), except
         that telemetry operations used by Railroad licensees may be authorized on frequency pair 452/457.9375
         MHz with a transmitter output power not to exceed 8 watts.

     (f) 220–222 MHz as available under subpart T of this part.

     (g) 450–470 MHz band (as available for secondary fixed operations in accordance with § 90.261 and for low
         power operations in accordance with § 90.267).

     (h) 458–468 MHz band (as available in the Public Safety Pool for bio-medical telemetry operations).

     (i)   For Industrial/Business frequencies which are not governed by paragraphs (a) through (h), on frequencies
           available for operations up to 2 watts.

47 CFR 90.238(i) (enhanced display)                                                                             page 242 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 90.239
Private Land Mobile Radio Services

[44 FR 17183, Mar. 21, 1979, as amended at 46 FR 45955, Sept. 16, 1981; 50 FR 39680, Sept. 30, 1985; 50 FR 40976, Oct. 8, 1985;
56 FR 19603, Apr. 29, 1991; 60 FR 37268, July 19, 1995; 61 FR 6576, Feb. 21, 1996; 62 FR 18927, Apr. 17, 1997; 68 FR 19460, Apr.
21, 2003; 78 FR 28756, May 16, 2013]

§ 90.239 [Reserved]
§ 90.241 Radio call box operations.
     (a) The frequencies in the 72–76 MHz band listed in § 90.257(a)(1) may be assigned in the Public Safety Pool
         for operation of radio call boxes to be used by the public to request fire, police, ambulance, road service,
         and other emergency assistance, subject to the following conditions and limitations:

           (1) Maximum transmitter power will be either 2.5 watts plate input to the final stage or 1 watt output.

           (2) Antenna gain shall not exceed zero dBd (referred to a half-wave dipole) in any horizontal direction.

           (3) Only vertical polarization of antennas shall be permitted.

           (4) The antenna and its supporting structure must not exceed 6.1 m (20 feet) in height above the
               ground.

           (5) Only A1D, A2D, F1D, F2D, G1D, or G2D emission shall be authorized.

           (6) The transmitter frequency tolerance shall be 0.005 percent.

           (7) Except for test purposes, each transmission must be limited to a maximum of two seconds and shall
               not be automatically repeated more than two times at spaced intervals within the following 30
               seconds. Thereafter, the authorized cycle may not be reactivated for one minute.

           (8) All transmitters installed after December 10, 1970, shall be furnished with an automatic means to
               deactivate the transmitter in the event the carrier remains on for a period in excess of three minutes.
               The automatic cutoff system must be designed so the transmitter can be only manually reactivated.

           (9) Frequency selection must be made with regard to reception of television stations on channels 4
               (66–72 MHz) and 5 (76–82 MHz) and should maintain the greatest possible frequency separation
               from either or both of these channels, if they are assigned in the area.

     (b) [Reserved]

     (c) Frequencies in the 450–470 MHz band which are designated as available for assignment to central
         control stations and radio call box installations in § 90.20(c) or § 90.20(d)(58) may be assigned in the
         Public Safety Pool for highway call box systems subject to the following requirements:

           (1) Call box transmitters shall be installed only on limited access highways and may communicate only
               with central control stations of the licensee.

           (2) Maximum transmitter power for call boxes will be either 2.5 watts input to the final amplifier stage or
               one watt output. The central control station shall not exceed 25 watts effective radiated power
               (ERP).

           (3) The height of a call box antenna may not exceed 6.1 meters (20 feet) above the ground, the natural
               formation, or the existing man-made structure (other than an antenna supporting structure) on which
               it is mounted. A central station transmitting antenna, together with its supporting structure shall not
               exceed 15 m. (50 ft.) above the ground surface.

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                                                                                                             47 CFR 90.241(c)(4)
Private Land Mobile Radio Services

           (4) Only F1D, F2D, F3E, G1D, G2D, or G3E, emission may be authorized for nonvoice signaling,
               radiotelephony, and multiplexed voice and nonvoice use. The provisions in this part applicable to the
               use of F3E or G3E emission are also applicable to the use of F1D, F2D, G1D or G2D emission for call
               box transmitters.

           (5) The station identification required by § 90.425 shall be by voice and may be transmitted for the
               system from the central control station. Means shall be provided at each central control station
               location to automatically indicate the call box unit identifier when a call box unit is activated.

           (6) Call box installations must be so designed that their unit identifier is automatically transmitted when
               the handset is lifted.

           (7) Each application for a call box system must contain information on the nonvoice transmitting
               equipment, including the character structure, bit rate, modulating tone frequencies, identification
               codes, and the method of modulation (i.e., frequency shift, tone shift, or tone phase shift).

           (8) Call box installations may be used secondarily for the transmission of information from roadside
               sensors. Central control station transmitters may be used secondarily to interrogate call box
               roadside sensors and for the transmission of signals to activate roadside signs.

           (9) Each call box transmitter must be provided with a timer which will automatically deactivate the
               transmitter after 2 minutes unless the central control station operator reactivates the timer cycle.

          (10) The central control station must include facilities that permit direct control of any call box in the
               system.

          (11) Call box transmitter frequency tolerance shall be 0.001 percent.

          (12) Transmitters certificated under this part for use of F3E or G3E emission may be used for F1D, F2B,
               G2B or G2D emission provided that the audio tones or digital data bits are passed through the low
               pass audio filter required to be provided in the transmitter for F3E or G3E emission. The transmitter
               must be adjusted and operated so that the instantaneous frequency deviation does not exceed the
               maximum value allowed for F3E or G3E emission.

     (d) In addition to the frequencies available pursuant to § 90.20(c) the frequencies set forth in § 90.20(d)(58)
         may be used for central control station and call box installations in areas where such frequencies are
         available for fixed system use subject to the requirements and limitations of that section and subject to
         the provisions of paragraphs (c) (1), (4), (5), (6), (7), (8), (9), (10), and (12) of this section.

[43 FR 54791, Nov. 22, 1978; 44 FR 32219, June 5, 1979; 49 FR 48712, Dec. 14, 1984; 50 FR 39680, Sept. 30, 1985; 50 FR 40976,
Oct. 8, 1985; 54 FR 38681, Sept. 20, 1989; 54 FR 45891, Oct. 31, 1989; 58 FR 44957, Aug. 25, 1993; 62 FR 18927, Apr. 17, 1997; 63
FR 36610, July 7, 1998; 63 FR 68965, Dec. 14, 1998; 72 FR 35195, June 27, 2007; 78 FR 25175, Apr. 29, 2013]

§ 90.242 Travelers' information stations.
     (a) The frequencies 530 through 1700 kHz in 10 kHz increments may be assigned to the Public Safety Pool
         for the operation of Travelers' Information Stations subject to the following conditions and limitations.

           (1) [Reserved]

           (2) Each application for a station or system shall be accompanied by:

47 CFR 90.242(a)(2) (enhanced display)                                                                           page 244 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.242(a)(2)(i)
Private Land Mobile Radio Services

                 (i)   A statement certifying that the transmitting site of the Travelers' Information Station will be
                       located at least 15 km (9.3 miles) measured orthogonally outside the measured 0.5 mV/m
                       daytime contour (0.1 mV/m for Class A stations) of any AM broadcast station operating on a
                       first adjacent channel or at least 130 km (80.6 miles) outside the measured 0.5 mV/m daytime
                       contour (0.1 mV/m for Class A stations) of any AM broadcast station operating on the same
                       channel, or, if nighttime operation is proposed, outside the theoretical 0.5 mV/m-50% nighttime
                       skywave contour of a U.S. Class A station. If the measured contour is not available, then the
                       calculated 0.5 mV/m field strength contour shall be acceptable. These contours are available at
                       the concerned AM broadcast station and FCC offices in Washington, DC.

                (ii) In consideration of possible cross-modulation and inter-modulation interference effects which
                     may result from the operation of a Travelers' Information Station in the vicinity of an AM
                     broadcast station on the second or third adjacent channel, the applicant shall certify that it has
                     considered these possible effects and, to the best of its knowledge, does not foresee
                     interference occurring to broadcast stations operating on second or third adjacent channels.

                (iii) A map showing the geographical location of each transmitter site and an estimate of the signal
                      strength at the contour of the desired coverage area. For a cable system, the contour to be
                      shown is the estimated field strength at 60 meters (197 feet) from any point on the cable. For a
                      conventional radiating antenna, the estimated field strength contour at 1.5 km (0.93 mile) shall
                      be shown. A contour map comprised of actual on-the-air measurements shall be submitted to
                      the Commission within 60 days after station authorization or completion of station
                      construction, whichever occurs later. A sufficient number of points shall be chosen at the
                      specified distances (extrapolated measurements are acceptable) to adequately show
                      compliance with the field strength limits.

                (iv) For each transmitter site, the transmitter's output power, the type of antenna utilized, its length
                     (for a cable system), its height above ground, distance from transmitter to the antenna, and the
                     elevation above sea level at the transmitting site.

           (3) Travelers' Information Stations will be authorized on a primary basis on 530 kHz and on a secondary
               basis to stations authorized on a primary basis in the band 535–1705 kHz.

           (4) A Travelers' Information Station authorization may be suspended, modified, or withdrawn by the
               Commission without prior notice or right to hearing if necessary to resolve interference conflicts, to
               implement agreements with foreign governments, or in other circumstances warranting such action.

           (5) The transmitting site of each Travelers' Information Station shall be restricted to the immediate
               vicinity of the following specified areas: Air, train, and bus transportation terminals, public parks and
               historical sites, bridges, tunnels, and any intersection of a Federal Interstate Highway with any other
               Interstate, Federal, State, or local highway.

           (6) A Travelers' Information Station shall normally be authorized to use a single transmitter. However, a
               system of stations, with each station in the system employing a separate transmitter, may be
               authorized for a specific area provided sufficient need is demonstrated by the applicant.

           (7) Travelers' Information Stations shall transmit only noncommercial voice information pertaining to
               traffic and road conditions, traffic hazard and travel advisories, directions, availability of lodging, rest
               stops and service stations, and descriptions of local points of interest. It is not permissible to
               identify the commercial name of any business establishment whose service may be available within
               or outside the coverage area of a Travelers' Information Station. However, to facilitate

47 CFR 90.242(a)(7) (enhanced display)                                                                       page 245 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.242(b)
Private Land Mobile Radio Services

                announcements concerning departures/arrivals and parking areas at air, train, and bus terminals, the
                trade name identification of carriers is permitted. Travelers' Information Stations may also transmit
                information in accordance with the provisions of §§ 90.405 and 90.407.

     (b) Technical standards.

           (1) The use of 6K00A3E emission will be authorized, however N0N emission may be used for purposes
               of receiver quieting, but only for a system of stations employing “leaky” cable antennas.

           (2) A frequency tolerance of 100 Hz shall be maintained.

           (3) For a station employing a cable antenna, the following restrictions apply:

                 (i)   The length of the cable antenna shall not exceed 3.0 km (1.9 miles).

                (ii) Transmitter RF output power shall not exceed 50 watts and shall be adjustable downward to
                     enable the user to comply with the specified field strength limit.

                (iii) The field strength of the emission on the operating frequency shall not exceed 2 mV/m when
                      measured with a standard field strength meter at a distance of 60 meters (197 feet) from any
                      part of the station.

           (4) For a station employing a conventional radiating antenna(s) (ex. vertical monopole, directional array)
               the following restrictions apply:

                 (i)   The antenna height above ground level shall not exceed 15.0 meters (49.2 feet).

                (ii) Only vertical polarization of antennas shall be permitted.

                (iii) Transmitter RF output power shall not exceed 10 watts to enable the user to comply with the
                      specified field strength limit.

                (iv) The field strength of the emission on the operating frequency shall not exceed 2 mV/m when
                     measured with a standard field strength meter at a distance of 1.50 km (0.93 miles) from the
                     transmitting antenna system.

           (5) For co-channel stations operating under different licenses, the following minimum separation
               distances shall apply:

                 (i)   0.50 km (0.31 miles) for the case when both stations are using cable antennas.

                (ii) 7.50 km (4.66 miles) for the case when one station is using a conventional antenna and the
                     other is using a cable antenna.

                (iii) 15.0 km (9.3 miles) for the case when both stations are using conventional antennas.

           (6) For a system of co-channel transmitters operating under a single authorization utilizing either cable
               or conventional antennas, or both, no minimum separation distance is required.

           (7) An applicant desiring to locate a station that does not comply with the separation requirements of
               this section shall coordinate with the affected station.

           (8) Each transmitter in a Travelers' Information Station shall be equipped with an audio low-pass filter.
               Such filter shall be installed either at the transmitter's audio input or between the modulation limiter
               and the modulated stage. At audio frequencies between 5 kHz and 20 kHz this filter shall have an
               attenuation greater than the attenuation at 1 kHz by at least:

47 CFR 90.242(b)(8) (enhanced display)                                                                    page 246 of 516
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                                                                                                                 47 CFR 90.243
Private Land Mobile Radio Services

     83 log10 (f/5) decibels.

     where “f” is the audio frequency in kHz. At audio frequencies above 20 kHz, the attenuation shall be at least 50
     decibels greater than the attenuation at 1 kHz.

[43 FR 54791, Nov. 22, 1978; 44 FR 67118, Nov. 23, 1979; 49 FR 48712, Dec. 14, 1984, as amended at 54 FR 39740, Sept. 28,
1989; 56 FR 64874, Dec. 12, 1991; 62 FR 18928, Apr. 17, 1997; 65 FR 60877, Oct. 13, 2000; 67 FR 63289, Oct. 11, 2002; 72 FR
35195, June 27, 2007; 73 FR 25497, May 6, 2008; 78 FR 50345, Aug. 19, 2013; 80 FR 25608, May 5, 2015]

§ 90.243 Mobile relay stations.
     (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the Radiolocation
         Service.

     (b) Special provisions for mobile relay operations:

           (1) In the Public Safety Pool, systems operating on any of the public safety frequencies listed in §
               90.20(c) are permitted to be cross-banded for mobile stations operations with mobile relay stations
               where such stations are authorized.

           (2) [Reserved]

           (3) In the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator column of
               the frequency table in § 90.35(b)(3), mobile relay operation shall be on a secondary basis to other
               co-channel operations.

           (4) Except where specifically precluded, a mobile relay station may be authorized to operate on any
               frequency available for assignment to base stations.

           (5) A mobile station associated with mobile relay station(s) may not be authorized to operate on a
               frequency below 25 MHz.

     (c) Technical requirements for mobile relay stations.

           (1) Each new mobile relay station with an output power of more than one watt, and authorized after
               January 1, 1972, that is activated by signals below 50 MHz shall deactivate the station upon
               cessation of reception of the activating continuous coded tone signal. Licensees may utilize a
               combination of digital selection and continuous coded tone control where required to insure
               selection of only the desired mobile relay station.

           (2) Mobile relay stations controlled by signals above 50 MHz or authorized prior to January 1, 1972, to
               operate below 50 MHz are not required to incorporate coded signal or tone control devices unless
               the transmitters are consistently activated by undesired signals and cause harmful interference to
               other licensees. If activation by undesired signals causes harmful interference, the Commission will
               require the installation of tone control equipment within 90 days of a notice to the licensee.

           (3) Except in the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator
               column of the frequency table in § 90.35(b)(3), each new mobile-relay station authorized after
               January 1, 1972, shall be equipped for automatic deactivation of the transmitter within 5 seconds
               after the signals controlling the station cease.

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           (4) Except in the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator
               column of the frequency table in § 90.35(b)(3), each new mobile-relay station authorized after
               January 1, 1972, during periods that is not controlled from a manned fixed control point; shall have
               an automatic time delay or clock device that will deactivate the station not more than 3 minutes after
               its activation by a mobile unit.

           (5) In the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator column of
               the frequency table in § 90.35(b)(3), each mobile relay station, regardless of the frequency or
               frequencies of the signal by which it is activated shall be so designated and installed that it will be
               deactivated automatically when its associated receiver or receivers are not receiving a signal on the
               frequency or frequencies which normally activate it.

           (6) Multiple mobile relay station radio systems shall use wireline or radio stations on fixed frequencies
               for any necessary interconnect circuits between the mobile relay stations.

[43 FR 54791, Nov. 22, 1978, as amended at 49 FR 40177, Oct. 15, 1984; 50 FR 13606, Apr. 5, 1985; 50 FR 39680, Sept. 30, 1985;
50 FR 40976, Oct. 8, 1985; 54 FR 39740, Sept. 28, 1989; 56 FR 19603, Apr. 29, 1991; 56 FR 32517, July 17, 1991; 60 FR 37268,
July 19, 1995; 61 FR 6576, Feb. 21, 1996; 62 FR 18928, Apr. 17, 1997; 74 FR 23803, May 21, 2009]

§ 90.245 Fixed relay stations.
Except where specifically provided for, fixed relay stations shall be authorized to operate only on frequencies
available for use by operational fixed stations.

§ 90.247 Mobile repeater stations.
A mobile station authorized to operate on a mobile service frequency above 25 MHz may be used as a mobile
repeater to extend the communications range of hand-carried units subject to the following:

     (a) Mobile repeaters and/or associated hand-carried transmitters may be assigned separate base/mobile
         frequencies for this use in addition to the number of frequencies normally assignable to the licensee.

    (b)–(c) [Reserved]

     (d) In the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator column of the
         frequency table in § 90.35(b)(3), use of mobile repeaters is on a secondary basis to the stations of any
         other licensee. Hand carried units used in connection with mobile repeaters on frequencies designated
         with an “LR” in the coordinator column of the frequency table in § 90.35(b)(3) may operate only above 150
         MHz and are limited to a maximum output power of six watts. The frequency and maximum power shall
         be specified in the station authorization.

     (e) In the Industrial/Business Pool, on frequencies designated with an “LR” in the coordinator column of the
         frequency table in § 90.35(b)(3), the output power of a mobile repeater station, when transmitting as a
         repeater station on the frequency used for communication with its associated pack-carried or hand-
         carried units, shall not exceed 6 watts except when the same frequency is also used by the same station
         for direct communication with vehicular mobile units or with one or more base stations.

     (f) When automatically retransmitting messages originated by or destined for hand-carried units, each mobile
         station shall activate the mobile transmitter only with a continuous access signal, the absence of which
         will de-activate the mobile transmitter. The continuous access signal is not required when the mobile unit
         is equipped with a switch that activates the automatic mode of the mobile unit and an automatic time-

47 CFR 90.247(f) (enhanced display)                                                                             page 248 of 516
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                                                                                                         47 CFR 90.248
Private Land Mobile Radio Services

           delay device that de-activates the transmitter after any uninterrupted transmission period in excess of 3
           minutes. For the purposes of this rule section the continuous access signal can be achieved by use of
           digital or analog methods.

[43 FR 54791, Nov. 22, 1978, as amended at 62 FR 18928, Apr. 17, 1997; 75 FR 19284, Apr. 14, 2019]

§ 90.248 Wildlife and ocean buoy tracking.
     (a) The frequency bands 40.66–40.70 MHz and 216–220 MHz may be used for the tracking of, and the
         telemetry of scientific data from, ocean buoys and animal wildlife.

     (b) Transmitters operating under the provisions of this section are not subject to the technical standards
         contained in §§ 90.205–90.217. In lieu thereof, the transmitters shall comply with the provisions in this
         section.

     (c) Classes of emission are limited to N0N, A1A, A2A, A2B, F1B, J2B, F2A, F2B, and/or F8E.

     (d) The authorized bandwidth shall not exceed 1 kHz.

     (e) Frequency stability.

           (1) For transmitters operating in the 40.66–40.70 MHz frequency band, the frequency stability shall be
               sufficient to ensure that, at the carrier frequency employed, the sum of the authorized bandwidth
               plus the bandwidth required for frequency stability are confined within this band.

           (2) In the 216–220 MHz frequency band, transmitters shall employ a minimum frequency stability of
               0.005 percent (50 parts per million). The carrier frequency shall be selected to ensure that the sum
               of the authorized bandwidth plus the bandwidth required for frequency stability are confined within
               this band.

           (3) The frequency stability standards shall be met over a temperature range of −30° to + 50° centigrade
               at normal supply voltage and for a variation in the primary supply voltage from 85% to 115% of the
               rated supply voltage at a temperature of + 20 °C. For battery operated equipment, the equipment
               tests shall be performed using a new battery.

     (f) The maximum peak transmitter output (carrier) power shall not exceed 1 milliwatt for airborne wildlife
         applications, 10 milliwatts for terrestrial wildlife applications or 100 milliwatts for ocean buoys.

     (g) Emissions appearing outside of the authorized bandwidth shall be attenuated below the carrier power by
         at least 26 dB, following the procedures specified in § 90.210(m).

[63 FR 64208, Nov. 19, 1998]

§ 90.249 Control stations.
Control stations associated with land mobile stations under this part shall be authorized to operate subject to the
following:

     (a) Frequencies for control stations.

           (1) Control stations may be authorized to operate on frequencies available for use by operational fixed
               stations.

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           (2) A control station associated with mobile relay station(s) may, at the option of the applicant, be
               assigned the frequency of the associated mobile station. In the Industrial/Business Pool, on
               frequencies designated with an “LR” in the coordinator column of the frequency table in §
               90.35(b)(3), such a control station may be assigned any mobile service station frequency available
               for assignment to mobile stations. Such operation is on a secondary basis to use of the frequency
               for regular mobile service communications.

           (3) Control and fixed stations in the Public Safety Pool may be authorized on a temporary basis to
               operate on frequencies available for base and mobile stations between 152 and 450 MHz, where
               there is an adequate showing that such operations cannot be conducted on frequencies allocated
               for assignment to operational fixed stations. Such operation will not be authorized initially or
               renewed for periods in excess of one year. Any such authorization shall be subject to immediate
               termination if harmful interference is caused to stations in the mobile service, or if the particular
               frequency is required for mobile service operations in the area concerned.

     (b) [Reserved]

     (c) A base station which is used intermittently as a control station for one or more associated mobile relay
         stations of the same licensee shall operate only on the mobile service frequency assigned to the
         associated mobile relay station when operating as a base station and on the mobile service frequency
         assigned to the associated mobile station when operating as a control station. Authority for such dual
         classification and use must be shown on the station authorization. When operating as a control station,
         the licensee must meet all control station requirements. In the Industrial/Business Pool, on frequencies
         designated with an “LR” in the coordinator column of the frequency table in § 90.35(b)(3), base stations
         used intermittently as control stations shall operate only on a mobile service frequency which is available
         for assignment to base stations.

[43 FR 54791, Nov. 22, 1978, as amended at 49 FR 36376, Sept. 17, 1984; 62 FR 18928, Apr. 17, 1997]

§ 90.250 Meteor burst communications.
Meteor burst communications may be authorized for the use of private radio stations subject to the following
provisions:

     (a) Station operation is limited to the State of Alaska only.

     (b) The frequency 44.20 MHz may be used for base station operation and 45.90 MHz for remote station
         operation on a primary basis. The frequencies 42.40 and 44.10 MHz may be used by base and remote
         stations, respectively, on a secondary basis to common carrier stations utilizing meteor burst
         communications. Users shall cooperate among themselves to the extent practicable to promote
         compatible operation.

     (c) The maximum transmitter output power shall not exceed 2000 watts for base stations and 500 watts for
         remote stations.

     (d) Co-channel base stations of different licensees shall be located at least 241 km (150 miles) apart. A
         remote station and a base station of different licensees shall be located at least 241 km (150 miles) apart
         if the remote units of the different licensees operate on the same frequency. Waiver of this requirement
         may be granted if affected users agree to a cooperative sharing arrangement.

47 CFR 90.250(d) (enhanced display)                                                                      page 250 of 516
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                                                                                                             47 CFR 90.250(e)
Private Land Mobile Radio Services

     (e) The authorized emission designator to be used in F1E, F7W, G1E or G7W to allow for Phase Shift Keying
         (PSK) or Frequency Shift Keying (FSK).

     (f) The maximum authorized bandwidth is 20 kHz.

     (g) Station identification in accordance with § 90.425(a) or (b) shall only be required for the base station.

     (h) Stations may be required to comply with additional conditions of operation as necessary on a case-by-
         case basis as specified in the authorization.

     (i)   Stations employing meteor burst communications must not cause interference to other stations operating
           in accordance with the allocation table. New authorizations will be issued subject to the Commission's
           experimental licensing rules in part 5 of this chapter. Prior to expiration of the experimental authorization,
           application Form 601 should be filed for issuance of a permanent authorization.

[48 FR 34043, July 27, 1983, as amended at 49 FR 48712, Dec. 14, 1984; 58 FR 44957, Aug. 25, 1993; 72 FR 35196, June 27, 2007;
78 FR 25175, Apr. 29, 2013]

Subpart K—Standards for Special Frequencies or Frequency Bands
§ 90.251 Scope.
This subpart sets forth special requirements applicable to the use of certain frequencies or frequency bands.

[54 FR 39740, Sept. 28, 1989]

§ 90.253 Use of frequency 5167.5 kHz.
The frequency 5167.5 kHz may be used by any station authorized under this part to communicate with any other
station in the State of Alaska for emergency communications. The maximum power permitted is 150 watts peak
envelope power (PEP). All stations operating on this frequency must be located in or within 50 nautical miles (92.6
km) of the State of Alaska. This frequency may also be used by stations authorized in the Alaska-private fixed
service for calling and listening, but only for establishing communication before switching to another frequency.

[49 FR 32201, Aug. 13, 1984]

§ 90.255 [Reserved]
§ 90.257 Assignment and use of frequencies in the band 72–76 MHz.
     (a) The following criteria shall govern the authorization and use of frequencies within the band 72–76 MHz by
         fixed stations. (For call box operations see § 90.241).

           (1) The following frequencies in the band 72–76 MHz may be used for fixed operations:

                                                                   MHz

                 72.02                                                  72.80
                 72.04                                                  72.82
                 72.06                                                  72.84
                 72.08                                                  72.86

47 CFR 90.257(a)(1) (enhanced display)                                                                         page 251 of 516
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Private Land Mobile Radio Services

                 72.10                                              72.88
                 72.12                                              72.90
                 72.14                                              72.92
                 72.16                                              72.94
                 72.18                                              72.96
                 72.20                                              72.98
                 72.22                                              75.42
                 72.24                                              75.46
                 72.26                                              75.50
                 72.28                                              75.54
                 72.30                                              75.58
                 72.32                                              75.62
                 72.34                                              75.64
                 72.36                                              75.66
                 72.38                                              75.68
                 72.40                                              75.70
                 72.42                                              75.72
                 72.46                                              75.74
                 72.50                                              75.76
                 72.54                                              75.78
                 72.58                                              75.80
                 72.62                                              75.82
                 72.64                                              75.84
                 72.66                                              75.86
                 72.68                                              75.88
                 72.70                                              75.90
                 72.72                                              75.92
                 72.74                                              75.94
                 72.76                                              75.96
                 72.78                                              75.98

           (2) All authorizations are subject to the condition that no harmful interference will be caused to
               television reception on Channels 4 and 5.

           (3) The applicant must agree to eliminate any harmful interference caused by his operation to TV
               reception on either Channel 4 or 5 that might develop by whatever means are necessary. Such action
               must be taken within 90 days of notification by the Commission. If such interference is not
               eliminated within the 90-day period, operation of the fixed station will be discontinued.

           (4) Vertical polarization must be used.

           (5) Whenever it is proposed to locate a 72–76 MHz fixed station less than 128 km (80 mi.) but more
               than 16 km (10 mi.) from the site of a TV transmitter operating on either channel 4 or 5, or from the
               post office of a community in which such channels are assigned but not in operation, the fixed

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                                                                                                         47 CFR 90.257(a)(5)(i)
Private Land Mobile Radio Services

                station shall be authorized only if there are fewer than 100 family dwelling units (as defined by the
                U.S. Bureau of the Census), excluding units 112 or more km (70 mi.) distant from the TV antenna
                site, located within a circle centered at the location of the proposed fixed station. The radius shall be
                determined by use of the following chart entitled, “Chart for Determining Radius From Fixed Station
                in 72–76 MHz Band to Interference Contour Along Which 10 Percent of Service From Adjacent
                Channel Television Station Would Be Destroyed.” Two charts are available, one for Channel 4, and
                one for Channel 5. The Commission may, however, in a particular case, authorize the location of a
                fixed station within a circle containing 100 or more family dwelling units upon a showing that:

                 (i)   The proposed site is the only suitable location.

                (ii) It is not feasible, technically or otherwise, to use other available frequencies.

                (iii) The applicant has a plan to control any interference that might develop to TV reception from his
                      operations.

                (iv) The applicant is financially able and agrees to make such adjustments in the TV receivers
                     affected as may be necessary to eliminate any interference caused by his operations.

                (v) All applications seeking authority to operate with a separation of less than 16 km (10 mi.) will
                    be returned without action.

     (b) The following criteria governs the authorization and use of frequencies in the 72–76 MHz band by mobile
         stations in the Industrial/Business Pool.

           (1) Mobile operation on frequencies in the 72–76 MHz band is subject to the condition that no
               interference is caused to the reception of television stations operating on Channel 4 or 5.
               Interference will be considered to occur whenever reception of a regularly used television signal is
               impaired by signals radiated by stations operating under these rules in the 72 to 76 MHz band
               regardless of the quality of such reception or the strength of the signal used. In order to minimize the
               hazard of such interference, it shall be the duty of the licensee to determine whether interference is
               being caused to television reception, wherever television receivers other than those under the control
               of the licensee, are located within 31 m. (100 ft.) of any point where the stations licensed under
               these rules may be operated. In any case, it shall be the responsibility of the licensee to correct, at its
               own expense, any such interference and if the interference cannot be eliminated by the application
               of suitable techniques, the operation of the offending transmitter shall be suspended. If the
               complainant refuses to permit the licensee to apply remedial techniques which demonstrably will
               eliminate the interference without impairment of the original reception, the licensee is absolved of
               further responsibility.

           (2) The maximum transmitter output power that will be authorized is 1 watt; and each station authorized
               will be classified and licensed as a mobile station. Any units of such a station, however, may be used
               to provide the operational functions of a base or fixed station. The antennas of transmitters
               operating on these frequencies must be directly mounted or installed upon the transmitting unit:
               Except that when permanently installed aboard a vehicle, antenna and transmitter may be separated
               as required for convenience in mounting. Horizontal polarization will not be allowed; and the gain of
               antennas employed shall not exceed that of a halfwave dipole. The maximum bandwidth that will be
               authorized is 20 kHz. Tone control transmissions are permitted.

     (c) Radio remote control of models is permitted on frequencies 10 kHz removed from these frequencies
         authorized for fixed and mobile operations in the 72–76 MHz band. Remote control operations are
         secondary to operation of fixed and mobile stations as provided for in this section.

47 CFR 90.257(c) (enhanced display)                                                                            page 253 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.257(c)
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47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.257(c)
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47 CFR 90.257(c) (enhanced display)            page 255 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.259
Private Land Mobile Radio Services

[43 FR 54791, Nov. 22, 1978; 44 FR 32219, June 5, 1979, as amended at 47 FR 51879, Nov. 18, 1982; 49 FR 41249, Oct. 22, 1984;
54 FR 38681, Sept. 20, 1989; 58 FR 30129, May 26, 1993; 60 FR 37268, July 19, 1995; 62 FR 18928, Apr. 17, 1997; 72 FR 35196,
June 27, 2007]

§ 90.259 Assignment and use of frequencies in the bands 216–220 MHz and 1427–1432 MHz.
     (a) 216–220 MHz band.

           (1) Frequencies in the 216–220 MHz band may be assigned to applicants that establish eligibility in the
               Industrial/Business Pool.

           (2) All operation is secondary to the fixed and mobile services, including the Low Power Radio Service.

           (3) In the 216–217 MHz band, no new assignments will be made after January 1, 2002.

           (4) In the 217–220 MHz band, the maximum transmitter output power is 2 watts. The maximum antenna
               height above average terrain (HAAT) is 152 m (500 feet).

           (5) In the 217–220 MHz band, base, mobile, and operational fixed operations are permitted.

           (6) Wide area operations will not be authorized. The area of normal day-to-day operations will be
               described in the application in terms of maximum distance from a geographical center (latitude and
               longitude).

           (7) Frequencies will be assigned with a 6.25 kHz, 12.5 kHz, 25 kHz or 50 kHz channel bandwidth.
               Frequencies may be assigned with a channel bandwidth exceeding 50 kHz only upon a showing of
               adequate justification.

           (8) Assignable 6.25 kHz channels will occur in increments of 6.25 kHz from 217.00625 MHz to
               219.99375 MHz. Assignable 12.5 kHz channels will occur in increments of 12.5 kHz from 217.0125
               MHz to 219.9875 MHz. Assignable 25 kHz channels will occur in increments of 25 kHz from 217.025
               MHz to 219.975 MHz. Assignable 50 kHz channels will occur in increments of 50 kHz from 217.025
               MHz to 219.975 MHz.

     (b) 1427–1432 MHz band.

           (1) Frequencies in the 1427–1432 MHz band may be assigned to applicants that establish eligibility in
               the Public Safety Pool or the Industrial/Business Pool.

           (2) All operations in the 1427–1429.5 MHz band are secondary to the Wireless Medical Telemetry
               Service except in the locations specified in paragraph (b)(4) of this section. At the locations
               specified in paragraph (b)(4) of this section, all operations are secondary to the Wireless Medical
               Telemetry Service in the 1429–1431.5 MHz band.

           (3) All operations in the 1429.5–1432 MHz band are primary in status except in the locations specified
               in paragraph (b)(4) of this section. At the locations specified in paragraph (b)(4) of this section, all
               operations are primary in status in the 1427–1429 MHz and 1431.5–1432 MHz bands.

           (4) Locations:

                 (i)   Pittsburgh, Pennsylvania—Counties of Westmoreland, Washington, Beaver, Allegheny and Butler;

47 CFR 90.259(b)(4)(i) (enhanced display)                                                                      page 256 of 516
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                                                                                                  47 CFR 90.259(b)(4)(ii)
Private Land Mobile Radio Services

                (ii) Washington, DC metropolitan area—Counties of Montgomery, Prince George's and Charles in
                     Maryland; Counties of Arlington, Prince William, Fauquier, Loudon, and Fairfax, and Cities of
                     Alexandria, Falls Church, Fairfax, Manassas and Manassas Park in Virginia; and District of
                     Columbia;

                (iii) Richmond/Norfolk, Virginia—Counties of Charles City, Chesterfield, Dinwiddie, Goochland,
                      Hanover, Henrico, Isle of Wight, James City, New Kent, Powhatan, Prince George,
                      Southhampton, Surrey, Sussex, and York; Cities of Chesapeake, Colonial Heights, Franklin,
                      Hampton, Hopewell, Newport News, Norfolk, Petersburg, Poquoson, Portsmouth, Richmond,
                      Suffolk, Virginia Beach, and Williamsburg;

                (iv) Austin/Georgetown, Texas—Counties of Williamson and Travis;

                (v) Battle Creek, Michigan—County of Calhoun;

                (vi) Detroit, Michigan—Counties of Oakland, Wayne, Washtenaw, Macomb and Livingston;

                (vii) Spokane, Washington—Counties of Spokane, WA and Kootenai, ID.

           (5) All operations in the 1429.5–1432 MHz band authorized prior to April 12, 2002 are on a secondary
               basis.

           (6) For secondary operations only fixed stations are permitted. At the locations specified in (b)(4) of this
               section, secondary operations are performed in the 1429–1431.5 MHz band. For all other locations,
               secondary operations are performed in the 1427–1429.5 MHz band. The maximum power is 1 watt
               EIRP.

47 CFR 90.259(b)(6) (enhanced display)                                                                   page 257 of 516
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                                                                                                             47 CFR 90.259(b)(7)
Private Land Mobile Radio Services

           (7) For primary operations base, mobile, operational fixed and temporary fixed operations are permitted.

                 (i)   At the locations specified in paragraph (b)(4) of this section, primary operations are performed
                       in the 1427–1429 MHz and 1431.5–1432 MHz bands. The maximum ERP limitations are as
                       follows:

                                                                              Frequency range (MHz)
                                 Operation
                                                       1427–1428        1428–1428.5        1428.5–1429         1431.5–1432
                        Fixed (watts)                           61.1               6.11              0.611               0.611
                        Mobile (watts)                         0.611              0.611              0.015               0.015
                        Temporary fixed (watts)                0.611              0.611              0.611               0.611

                (ii) For all other locations, primary operations are performed in the 1429.5–1432 MHz band. The
                     maximum ERP limitations are as follows:

                                                                             Frequency range (MHz)
                                Operation
                                                      1429.5–1430       1430–1430.5       1430.5–1431.5         1431.5–1432
                        Fixed (watts)                          0.611             0.611                 6.11               61.1
                        Mobile (watts)                         0.015             0.611                0.611              0.611
                        Temporary fixed (watts)                0.611             0.611                0.611              0.611

           (8) Wide area operations will not be authorized. The area of normal day-to-day operations will be
               described in the application in terms of maximum distance from a geographical center (latitude and
               longitude).

           (9) Assignable frequencies occur in increments of 12.5 kHz from 1427.00625 MHz to 1431.99375 MHz.

          (10) Licensees, however, may combine contiguous channels up to 50 kHz, and more than 50 kHz only
               upon a showing of adequate justification.

          (11) For any operation in the 1427–1432 MHz band, the predicted or measured field strength—in the
               WMTS primary band—at the location of any registered WMTS healthcare facility shall not exceed 150
               uV/m. For the locations specified in (b)(4) of this section, WMTS is primary in the 1429–1431.5 MHz
               band. For all other locations, WMTS is primary in the 1427–1429.5 MHz band.

     (c) Authorized uses.

           (1) Use of these bands is limited to telemetering purposes.

           (2) Base stations authorized in these bands shall be used to perform telecommand functions with
               associated mobile telemetering stations. Base stations may also command actions by the vehicle
               itself, but will not be authorized solely to perform this function.

           (3) Except for the transmissions that are permitted under § 90.248(f) of this chapter, airborne use is
               prohibited.

[67 FR 41860, June 20, 2002, as amended at 69 FR 39867, July 1, 2004; 72 FR 35196, June 27, 2007; 75 FR 19284, Apr. 14, 2010]

47 CFR 90.259(c)(3) (enhanced display)                                                                          page 258 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.261
Private Land Mobile Radio Services

§ 90.261 Assignment and use of the frequencies in the band 450–470 MHz for fixed operations.
     (a) Frequencies in the 450–470 MHz band as listed in §§ 90.20(c)(3) and 90.35(b)(3) may be assigned to all
         eligibles for fixed use on a secondary basis to land mobile operations.

     (b) Fixed stations located 140 km (87 mi) or more from the center of any urbanized area of 600,000 or more
         population are limited to a transmitter output power of 75 watts. Fixed stations less than 140 km (87 mi)
         from the centers of these areas are limited to a transmitter output power of 20 watts. Urbanized areas of
         600,000 or more population are defined in the U.S. Census of Population 1970, Vol. 1, Table 20, pages
         1–74. The centers of the urbanized areas are determined from the Appendix, page 226, of the U.S.
         Department of Commerce publication “Airline Distance Between Cities in the United States.”

     (c) All fixed systems are limited to one frequency pair with 5 MHz spacing and must employ directional
         antennas with a front-to-back ratio of 15dB, except that omnidirectional antennas having unity gain may
         be employed by stations communicating with a minimum of three receiving locations encompassed in a
         sector of at least 160° in azimuth. Stations authorized for secondary fixed operations prior to July 13,
         1992, may continue to operate under the conditions of their initial authorization.

    (d)–(e) [Reserved]

     (f) Secondary fixed operations pursuant to paragraph (a) of this section will not be authorized on the
         following frequencies or on frequencies subject to § 90.267, except as provided in § 90.219(d)(3)(ii):

     Frequencies (MHz)

[57 FR 24992, June 12, 1992, as amended at 58 FR 33212, June 16, 1993; 60 FR 37268, July 19, 1995; 62 FR 18928, Apr. 17, 1997;
68 FR 19461, Apr. 21, 2003; 72 FR 35196, June 27, 2007; 83 FR 61097, Nov. 27, 2018]

§ 90.263 Substitution of frequencies below 25 MHz.
Frequencies below 25 MHz when shown in the radio pool frequency listings under this part will be assigned to base
or mobile stations only upon a satisfactory showing that, from a safety of life standpoint, frequencies above 25 MHz
will not meet the operational requirements of the applicant. These frequencies are available for assignment in many
areas; however, in individual cases such assignment may be impracticable due to conflicting frequency use
authorized to stations in other services by this and other countries. In such cases, a substitute frequency, if found
available, may be assigned from the following bands: 1705–1750 kHz, 2107–2170 kHz, 2194–2495 kHz,
2506–2850 kHz, 3155–3400 kHz, or 4438–4650 kHz. Since such assignments are in certain instances subject to
additional technical and operation limitations, it is necessary that each application also include precise information
concerning transmitter output power, type and directional characteristics, if any, of the antenna, and the minimum
necessary hours of operation. (This section is not applicable to the Radiolocation Service, subpart F of this part.)

[72 FR 35196, June 27, 2007]

§ 90.264 Disaster communications between 2 and 10 MHz.
     (a) The use of any particular frequency between 2 and 10 MHz is limited to those frequencies falling within
         the bands allocated to the fixed and land mobile services as indicated in § 2.106 of the Commission's
         Rules and Regulations.

47 CFR 90.264(a) (enhanced display)                                                                            page 259 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.264(b)
Private Land Mobile Radio Services

     (b) Only in the following circumstances will authority be extended to stations to operate on the frequencies
         between 2 and 10 MHz:

           (1) To provide communications circuits in emergency and/or disaster situations, where safety of life and
               property are concerned;

           (2) To provide standby and/or backup communications circuits to regular domestic communications
               circuits which have been disrupted by disasters and/or emergencies.

     (c) The FCC will not accept responsibility for protection of the circuits from harmful interference caused by
         foreign operations.

     (d) In the event that a complaint of harmful interference resulting from operation of these circuits is received
         from a foreign source, the offending circuit(s) must cease operation on the particular frequency
         concerned immediately upon notification by the Commission.

     (e) In order to accomodate the situations described in paragraphs (c) and (d) of this section, the equipment
         shall be capable of transmitting and receiving on any frequency within the bands between 2 and 10 MHz
         and capable of immediate change among the frequencies.

     (f) Only 2K80J3E, 100HA1A and those emission types listed in § 90.237(g) are permitted.

     (g) Applicants must fulfill eligibility requirements set out in § 90.20(d)(6) and shall submit disaster
         communications plans pursuant to § 90.129(m).

     (h) Training exercises which require use of these frequencies for more than seven hours a week, cumulative,
         are not authorized without prior written approval from the Commission.

[46 FR 52373, Oct. 27, 1981, as amended at 48 FR 32831, July 19, 1983; 49 FR 48712, Dec. 14, 1984; 62 FR 18929, Apr. 17, 1997;
72 FR 35196, June 27, 2007]

§ 90.265 Assignment and use of frequencies in the bands allocated for Federal use.
     (a) The following center frequencies are available for assignment to fixed stations in the Public Safety Pool or
         the Industrial/Business Pool, subject to the provisions of this section:

47 CFR 90.265(a) (enhanced display)                                                                             page 260 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.265(a)(1)
Private Land Mobile Radio Services

                                              Hydro Channels (MHz)

           169.4250                                170.2625                 171.1000                 406.1250
           169.4375                                170.2750                 171.1125                 406.1750
           169.4500                                170.2875                 171.1250                 412.6625
           169.4625                                170.3000                 171.8250                 412.6750
           169.4750                                170.3125                 171.8375                 412.6875
           169.4875                                170.3250                 171.8500                 412.7125
           169.5000                                171.0250                 171.8625                 412.7250
           169.5125                                171.0375                 171.8750                 412.7375
           169.5250                                171.0500                 171.8875                 412.7625
           170.2250                                171.0625                 171.9000                 412.7750
           170.2375                                171.0750                 171.9125                 415.1250
           170.2500                                171.0875                 171.9250                 415.1750

           (1) The use of these frequencies is limited to transmitting hydrological or meteorological data.

           (2) All use of these frequencies is on a secondary basis to Federal Government stations and the
               hydrological or meteorological data being handled must be made available on request to
               governmental agencies.

           (3) Other provisions of this part notwithstanding, an operational fixed station operating on these
               frequencies shall not communicate with any station in the mobile service unless written
               authorization to do so has been obtained from the Commission.

           (4) Persons who desire to operate stations on these frequencies should communicate with the
               Commission for instructions concerning the procedure to be followed in filing formal application.

           (5) After May 27, 2005, for the 169–172 MHz band and January 1, 2008 for the 406–416 MHz band,
               channels for new operations are limited to an authorized bandwidth not to exceed 11.25 kHz. After
               those dates, existing systems with an authorized bandwidth of greater than 11.25 kHz (including
               those systems that expand existing operations) may continue to operate with a bandwidth greater
               than 11.25 kHz until January 1, 2013. Such operations are limited by paragraphs (a)(6) and (a)(7) of
               this section.

           (6) After May 27, 2005, if a licensee of a channel in the band 169–172 MHz which uses equipment with
               an authorized bandwidth greater than 11.25 kHz cannot resolve an interference complaint to the
               satisfaction of an impacted Federal agency or is advised to do so by the Hydro Committee as
               approved by the FCC, then the licensee must cease operation on the frequency upon notification by
               the Commission.

           (7) After January 1, 2008, if a licensee of a channel in the band 406.1–420 MHz which uses equipment
               with an authorized bandwidth greater than 11.25 kHz cannot resolve an interference complaint to the
               satisfaction of an impacted Federal agency or is advised to do so by the Hydro Committee as
               approved by the FCC, then the licensee must cease operation on the frequency upon notification by
               the Commission.

47 CFR 90.265(a)(7) (enhanced display)                                                                  page 261 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.265(a)(8)
Private Land Mobile Radio Services

           (8) After May 27, 2005, new assignments on the frequencies 406.125 MHz and 406.175 MHz are to be
               primarily for paired operations with the frequencies 415.125 MHz and 415.175 MHz, respectively and
               limited to an authorized bandwidth not to exceed 11.25 kHz when paired.

           (9) Existing stations may continue to use the center frequencies 169.575 MHz, 409.675 MHz, 409.725
               MHz, and 412.625 MHz until January 1, 2013, subject to the requirements of paragraphs (a)(6) and
               (a)(7) of this section.

     (b) The following frequencies are available for wireless microphone operations to eligibles in this part, subject
         to the provisions of this paragraph:

           Frequencies (MHz)

           169.445

           169.505

           169.545

           169.575

           169.605

           169.995

           170.025

           170.055

           170.245

           170.305

           171.045

           171.075

           171.105

           171.845

           171.875

           171.905

           (1) On center frequencies 169.575 MHz, 170.025 MHz, 171.075 MHz, and 171.875 MHz, the emission
               bandwidth shall not exceed 200 kHz. On the other center frequencies listed in this paragraph (b), the
               emission bandwidth shall not exceed 54 kHz.

           (2) The output power shall not exceed 50 milliwatts.

           (3) For emissions with a bandwidth not exceeding 54 kHz, the frequency stability of wireless
               microphones shall limit the total emission to within ±32.5 kHz of the assigned frequency. Emissions
               with a bandwidth exceeding 54 kHz shall comply with the emission mask in Section 8.3 of ETSI EN
               300 422–1 v1.4.2 (2011–08).

47 CFR 90.265(b)(3) (enhanced display)                                                                 page 262 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.265(b)(4)
Private Land Mobile Radio Services

           (4) Wireless microphone operations are unprotected from interference from other licensed operations in
               the band. If any interference from wireless microphone operation is received by any Government or
               non-Government operation, the wireless microphone must cease operation on the frequency
               involved. Applications are subject to Government coordination.

     (c) The following center frequencies are available for assignment to licensees engaged in forest firefighting
         and conservation activities, subject to the provisions of this section:

                           Forest Firefighting and Conservation Channels (MHz)

           170.425                                                   171.425                           172.225
           170.475                                                   171.475                           172.275
           170.575                                                   171.575                           172.375

           (1) These frequencies will be assigned on a secondary basis to any U.S. Government station.

           (2) The frequencies 170.425 MHz, 170.475 MHz, 170.575 MHz, 171.425 MHz, 171.575 MHz, 172.225
               MHz, and 172.275 MHz will be assigned only to licensees directly responsible for the prevention,
               detection, and suppression of forest fires.

           (3) The frequencies 171.475 MHz and 172.275 MHz will be assigned to licensees directly responsible
               for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest
               conservation activities for mobile relay operation only.

           (4) The frequencies 170.425 MHz, 170.575 MHz, 171.475 MHz, 172.225 MHz, and 172.375 MHz will be
               assigned for use only in areas west of the Mississippi River.

           (5) The frequencies 170.475 MHz, 171.425 MHz, 171.575 MHz, and 172.275 MHz will be assigned for
               use only in areas east of the Mississippi River.

           (6) All applications for use of these frequencies must be accompanied by a letter of concurrence by the
               United States Department of Agriculture.

           (7) After May 27, 2005, channels for new operations are limited to an authorized bandwidth not to
               exceed 11.25 kHz. Between May 27, 2005, and January 1, 2013, existing systems with an authorized
               bandwidth of greater than 11.25 kHz (including those systems that expand existing operations) may
               continue to operate with a bandwidth greater than 11.25 kHz, subject to the limitations set forth in
               paragraph (c)(8), of this section.

           (8) After May 27, 2005, if a licensee that uses equipment with an authorized bandwidth greater than
               11.25 kHz cannot resolve an interference complaint from an impacted Federal agency, then the
               licensee must cease operation on the frequency upon notification by the Commission.

     (d) The frequencies 166.250 MHz and 170.150 MHz are available for assignment to licensees engaged in
         public safety activities, subject to the provisions of this section:

           (1) These frequencies are available for assignment to stations in the Public Safety Pool, only at points
               within 241.4 km. (150 mi.) of New York, N.Y.;

           (2) Operations on these channels is on a secondary basis to any Federal station; and

47 CFR 90.265(d)(2) (enhanced display)                                                                 page 263 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.265(d)(3)
Private Land Mobile Radio Services

           (3) After May 27, 2005, if a licensee that uses equipment with an authorized bandwidth greater than
               11.25 kHz cannot resolve an interference complaint from an impacted Federal agency, then the
               licensee must cease operation on the frequency upon notification by the Commission.

           (4) After May 27, 2005, channels for new operations are limited to an authorized bandwidth not to
               exceed 11.25 kHz. Between May 27, 2005, and January 1, 2013, existing systems with an authorized
               bandwidth of greater than 11.25 kHz (including those systems that expand existing operations) may
               continue to operate with a bandwidth greater than 11.25 kHz, subject to the limitations set forth in
               paragraph (d)(3), of this section.

     (e) The following frequencies are available for use by Medical Radiocommunication Systems:

           (1) The frequencies 150.775 MHz, 150.790 MHz, and 163.250 MHz, subject to following provisions:

                 (i)   After May 27, 2005, new assignments for these frequencies shall be authorized only for the
                       purpose of delivering or rendering medical services to individuals (medical
                       radiocommunication systems).

                 (ii) After May 27, 2005, new operations on the frequency 163.250 MHz are limited to an authorized
                      bandwidth not to exceed 11.25 kHz.

                (iii) After January 1, 2008, new operations on the frequencies 150.775 MHz and 150.790 MHz are
                      limited to an authorized bandwidth not to exceed 11.25 kHz.

                (iv) Existing systems with an authorized bandwidth of greater than 11.25 kHz (including those
                     systems that expand existing operations) may continue to operate on a primary basis with a
                     bandwidth greater than 11.25 kHz until January 1, 2013. After January 1, 2013, stations that
                     use the frequencies 150.775 MHz, 150.790 MHz, or 163.250 MHz shall be limited to an
                     authorized bandwidth not to exceed 11.25 kHz.

           (2) The frequency 152.0075 MHz and frequencies within the bands 462.9375–463.1875 MHz and
               467.9375 MHz–468.1875 MHz, subject to the limitations specified in § 90.20.

     (f) Incorporation by reference. The material listed in this paragraph (f) is incorporated by reference in this
         section with the approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1
         CFR part 51. To enforce any edition other than that specified in this section, the FCC must publish a
         document in the FEDERAL REGISTER and the material must be available to the public. All approved
         incorporation by reference (IBR) material is available for inspection at the FCC and the National Archives
         and Records Administration (NARA). Contact the FCC through the Federal Communications Commission's
         Reference Information Center, phone: (202) 418–0270. For information on the availability of this material
         at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations.html or email fr.inspection@nara.gov.
         The material may be obtained from the following source in this paragraph (f):

           (1) European Telecommunications Standards Institute, 650 Route des Lucioles, 06921 Sophia Antipolis
               Cedex, France. A copy of the standard is also available at http://www.etsi.org/deliver/etsi_en/
               300400_300499/30042201/01.03.02_60/en_30042201v010302p.pdf.

                 (i)   ETSI EN 300 422–1 V1.4.2 (2011–08): “Electromagnetic compatibility and Radio spectrum
                       Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range; Part 1: Technical
                       characteristics and methods of measurement,” Copyright 2011, IBR approved for section
                       15.236(g).

                 (ii) [Reserved]

47 CFR 90.265(f)(1)(ii) (enhanced display)                                                             page 264 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.265(f)(2)
Private Land Mobile Radio Services

           (2) [Reserved]

[49 FR 20506, May 15, 1984, as amended at 62 FR 18929, Apr. 17, 1997; 70 FR 21661, Apr. 27, 2005; 80 FR 71731, Nov. 17, 2015;
82 FR 41562, Sept. 1, 2017; 85 FR 64410, Oct. 13, 2020; 88 FR 21450, Apr. 10, 2023]

§ 90.266 Long distance communications on frequencies below 25 MHz.
     (a) The use of any particular frequency between 2 and 25 MHz is limited to those frequencies falling within
         the bands allocated to the fixed and land mobile services as indicated in § 2.106 of the Commission's
         Rules and Regulations.

     (b) Only in the following circumstances will authority be extended to stations to operate on the frequencies
         below 25 MHz:

           (1) To provide communications circuits to support operations which are highly important to the national
               interest and where other means of telecommunication are unavailable;

           (2) To provide standby and/or backup communications circuits to regular domestic communications
               circuits which have been disrupted by disasters and/or emergencies.

     (c) No protection is afforded to users of these frequencies from harmful interference caused by foreign
         operations.

     (d) In the event that a complaint of harmful interference resulting from operation of these circuits is received
         from a foreign source, the offending circuit(s) must cease operation on the particular frequency
         concerned immediately upon notification by the Commission.

     (e) In order to accommodate the situations described in paragraphs (c) and (d) of this section, the equipment
         shall be capable of transmitting and receiving on any frequency within the bands between 2 and 25 MHz
         and capable of immediate change among the frequencies, provided, however, that this requirement does
         not apply to equipment manufactured prior to August 15, 1983.

     (f) Only 2K80J3E, 100HA1A, 100HA1B and those emission types listed in § 90.237(g) are permitted.

     (g) Applicants must fulfill eligibility requirements set out in § 90.35(c)(1) and submit communications plans
         pursuant to § 90.129(o).

     (h) Exercises or circuits tests which require use of these frequencies for more than seven hours per week
         cumulative are prohibited unless prior written approval is obtained from the Commission.

[48 FR 32996, July 20, 1983, as amended at 49 FR 48712, Dec. 14, 1984; 52 FR 29856, Aug. 12, 1987; 62 FR 18929, Apr. 17, 1997]

§ 90.267 Assignment and use of frequencies in the 450–470 MHz band for low power use.
     (a) The following frequencies between 450–470 MHz are designated for low-power use subject to the
         provisions of this section. For purposes of this section these frequencies are referred to as “low power
         frequencies.” Pairs are shown but single frequencies are available for simplex operations.

     (b) Group A1 Frequencies. The Industrial/Business Pool frequencies in Group A1 are available on a
         coordinated basis, pursuant to §§ 90.35(b)(2) and 90.175(b), as follows:

           (1) Group A1 frequencies are available for voice and non-voice operations on a co-primary basis. Base,
               mobile and operational fixed stations will be authorized on Group A1 frequencies. Fixed stations may
               be licensed as mobile.
47 CFR 90.267(b)(1) (enhanced display)                                                                         page 265 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.267(b)(2)
Private Land Mobile Radio Services

           (2) Within 80 kilometers (50 miles) of the specified coordinates of the top 100 urban areas listed in §
               90.741 of this chapter (“80 km circles”) only low power operation will be authorized. The coordinates
               of an operational fixed or base station and the geographic center (latitude and longitude) of a mobile
               area of operation determine whether a station is within an “80 km circle.”

                 (i)   The maximum ERP for low power operation on Group A1 frequencies is as follows:

                                 Operation           Low side of frequency pair (watts)   High side of frequency pair (watts)
                        Operational Fixed or Base                                    20                                     6
                        Mobile                                                        6                                     6
                        Portable                                                      2                                     2

                (ii) The maximum antenna height for low power fixed stations on Group A1 frequencies will be 23
                     meters (75 feet) above ground.

           (3) Outside the “80 km circles” defined in paragraph (b)(2), full-power operational fixed, base, or mobile
               stations will be authorized as follows:

                 (i)   Power and antenna height limits are governed by § 90.205 of this chapter;

                (ii) For any operational fixed, base or mobile station exceeding the low power or antenna height
                     limits listed in paragraph (b)(2), the 21 dBu F(50,10) contour may not overlap any portion of an
                     “80 km circle;” and,

                (iii) Wide area operations will not be permitted. The area of normal day-to-day operations will be
                      described in the application in terms of maximum distance from a geographic center (latitude
                      and longitude).

           (4) The Industrial/Business Pool Group A1 Low Power Frequencies are as follows:

                 451/456.18125               451/456.58125         452/457.10625                     452/457.70625
                 451/456.1875                451/456.5875          452/457.1125                      452/457.7125
                 451/456.19375               451/456.59375         452/457.11875                     452/457.71875
                 451/456.28125               451/456.60625         452/457.13125                     452/457.78125
                 451/456.2875                451/456.6125          452/457.1375                      452/457.7875
                 451/456.29375               451/456.61875         452/457.14375                     452/457.79375
                 451/456.30625               451/456.65625         452/457.15625                     452/457.80625
                 451/456.3125                451/456.6625          452/457.1625                      452/457.8125
                 451/456.31875               451/456.66875         452/457.16875                     452/457.81875
                 451/456.35625               451/456.68125         452/457.18125                     452/457.83125
                 451/456.3625                451/456.6875          452/457.1875                      452/457.8375
                 451/456.36875               451/456.69375         452/457.19375                     452/457.84375
                 451/456.38125               451/456.70625         452/457.28125                     452/457.88125
                 451/456.3875                451/456.7125          452/457.2875                      452/457.8875
                 451/456.39375               451/456.71875         452/457.29375                     452/457.89375
                 451/456.40625               451/456.73125         452/457.48125                     452/457.98125
                 451/456.4125                451/456.7375          452/457.4875                      452/457.9875

47 CFR 90.267(b)(4) (enhanced display)                                                                         page 266 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.267(c)
Private Land Mobile Radio Services

                 451/456.41875             451/456.74375           452/457.49375                     452/457.99375
                 451/456.45625             451/456.75625           452.53125 (unpaired)              462/467.18125
                 451/456.4625              451/456.7625            452.5375 (unpaired)               462/467.1875
                 451/456.46875             451/456.76875           452.54375 (unpaired)              462/467.19375
                 451/456.48125             452/457.03125           452/457.63125                     462/467.45625
                 451/456.4875              452/457.0375            452/457.6375                      462/467.4625
                 451/456.49375             452/457.04375           452/457.64375                     462/467.46875
                 451/456.50625             452/457.05625           452/457.65625                     462/467.48125
                 451/456.5125              452/457.0625            452/457.6625                      462/467.4875
                 451/456.51875             452/457.06875           452/457.66875                     462/467.49375
                 451/456.55625             452/457.08125           452/457.68125                     462/467.50625
                 451/456.5625              452/457.0875            452/457.6875                      462/467.5125
                 451/456.56875             452/457.09375           452/457.69375                     462/467.51875

     (c) Group A2 Frequencies. The Industrial/Business Pool frequencies in Group A2 are available nationwide on
         a coordinated basis, pursuant §§ 90.35(b)(2) and 90.175(b) as follows:

           (1) Group A2 frequencies are available for voice and non-voice operations on a co-primary basis. Base,
               mobile or operational fixed stations will be authorized on Group A2 frequencies. Fixed stations may
               be licensed as mobile.

           (2) Low power operation will be authorized nationwide on Group A2 frequencies.

                 (i)   The maximum ERP for low power operation on these frequencies is as follows:

                                   Operation            Low side of frequency pair       High side of frequency pair (watts)
                        Operational Fixed or Base                                 20                                           6
                        Mobile                                                       6                                         6
                        Portable                                                     2                                         2

                (ii) The maximum antenna height for low power fixed stations will be 23 meters (75 feet) above
                     ground.

           (3) The Industrial/Business Pool Group A2 Low Power Frequencies are as follows:

                 451/456.23125                 451/456.53125           452/457.40625               452/457.85625
                 451/456.2375                  451/456.5375            452/457.4125                452/457.8625
                 451/456.24375                 451/456.54375           452/457.41875               452/457.86875
                 451/456.33125                 451/456.63125           452/457.50625
                 451/456.3375                  451/456.6375            452/457.5125
                 451/456.34375                 451/456.64375           452/457.51875
                 451/456.43125                 452/457.30625           452/457.75625
                 451/456.4375                  452/457.3125            452/457.7625
                 451/456.44375                 452/457.31875           452/457.76875

47 CFR 90.267(c)(3) (enhanced display)                                                                         page 267 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.267(d)
Private Land Mobile Radio Services

     (d) Group B Frequencies. The Industrial/Business Pool frequencies in Group B are available nationwide on a
         coordinated basis, pursuant to §§ 90.35(b)(2) and 90.175(b) as follows:

           (1) Group B frequencies are available for non-voice operations on a primary basis. Voice operations will
               be permitted on a secondary basis. Base, mobile or operational fixed stations will be authorized on
               Group B frequencies. Fixed stations may be licensed as mobile.

           (2) Operation on these frequencies is limited to 6 watts ERP for base, mobile or operational fixed
               stations and 2 watts ERP for portable units. A maximum antenna height of 7 meters (20 ft) above
               ground is authorized for fixed stations.

           (3) The Industrial/Business Pool Group B Frequencies are as follows:

                 462/467.20625                462/467.28125        462/467.35625            462/467.43125
                 462/467.2125                 462/467.2875         462/467.3625             462/467.4375
                 462/467.21875                462/467.29375        462/467.36875            462/467.44375
                 462/467.23125                462/467.30625        462/467.38125
                 462/467.2375                 462/467.3125         462/467.3875
                 462/467.24375                462/467.31875        462/467.39375
                 462/467.25625                462/467.33125        462/467.40625
                 462/467.2625                 462/467.3375         462/467.4125
                 462/467.26875                462/467.34375        462/467.41875

     (e) Group C Frequencies. The Industrial/Business Pool frequencies in Group C are available nationwide for
         non-coordinated itinerant use as follows.

           (1) Group C frequencies are available for voice and non-voice operations on a co-primary basis. Only
               mobile operations will be authorized on Group C frequencies. Stations may operate at fixed locations
               for a temporary period of time. No stations operating at a permanent fixed location will be authorized
               on Group C frequencies.

           (2) Operation on these frequencies is limited to 6 watts effective radiated power for fixed or mobile units
               and 2 watts ERP for portable units. Stations operating at fixed locations for a temporary period of
               time will be limited to an antenna height of 7 meters (20 feet) above ground.

           (3) The Industrial/Business Pool Group C Low Power Frequencies are as follows:

                 461/466.03125           461/466.15625        461/466.28125              462.8125
                 461/466.0375            461/466.1625         461/466.2875               462.8375 (unpaired)
                 461/466.04375           461/466.16875        461/466.29375              462/467.8625
                 461/466.05625           461/466.18125        461/466.30625              462/467.8875
                 461/466.0625            461/466.1875         461/466.3125               462/467.9125
                 461/466.06875           461/466.19375        461/466.31875              464/469.48125
                 461/466.08125           461/466.20625        461/466.33125              464/469.4875
                 461/466.0875            461/466.2125         461/466.3375               464/469.5125
                 461/466.09375           461/466.21875        461/466.34375              464/469.51875
                 461/466.10625           461/466.23125        461/466.35625              464/469.53125

47 CFR 90.267(e)(3) (enhanced display)                                                                   page 268 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.267(f)
Private Land Mobile Radio Services

                 461/466.1125            461/466.2375       461/466.3625                464/469.5375
                 461/466.11875           461/466.24375      461/466.36875               464/469.5625
                 461/466.13125           461/466.25625      462.7625 (unpaired)         464/469.56875
                 461/466.1375            461/466.2625       462.7875 (unpaired)
                 461/466.14375           461/466.26875      462.8125 (unpaired)

     (f) Group D Frequencies. The Industrial/Business Pool frequencies in Group D are available on a coordinated
         basis, pursuant to §§ 90.35(b)(2) and 90.175(b). Central station alarm signaling on these frequencies are
         co-primary with regard to co-channel or adjacent channel base, mobile or data operations.

           (1) Base, mobile or operational fixed stations will be authorized on Group D frequencies. Fixed stations
               may be licensed as mobile.

           (2) Unless concurrence is obtained in accordance with section 90.175(b) of this chapter from the
               Commission-certified frequency coordinator for frequencies designated for central station alarm
               operations, Group D frequencies subject to § 90.35(c)(63) are limited to central station alarm use
               within the urban areas described in § 90.35(c)(63). Outside the urban areas described in §
               90.35(c)(63), Group D frequencies subject to § 90.35(c)(63) are available for general Industrial/
               Business use on a coordinated basis, pursuant to § 90.35(b)(2) and § 90.175(b).

           (3) Unless concurrence is obtained in accordance with section 90.175(b) of this chapter from the
               Commission-certified frequency coordinator for frequencies designated for central station alarm
               operations, Group D frequencies subject to § 90.35(c)(66) are limited to central station alarm use
               nationwide.

           (4) Operation on Group D frequencies is limited to 2 watts output power for mobile, base or operational
               fixed stations. Fixed stations used for central station alarm operations may utilize antennas
               mounted not more than 7 meters (20 feet) above a man-made supporting structure, including
               antenna structure.

           (5) The Industrial/Business Pool Group D Low Power Frequencies are as follows:

                 460/465.90625                     460/465.95625                   461/466.00625
                 460/465.9125                      460/465.9625                    461/466.0125
                 460/466.91875                     460/465.96875                   461/466.01875
                 460/465.93125                     460/465.98125
                 460/465.9375                      460/465.9875
                 460/465.94375                     460/465.99375

     (g) Low Power Public Safety Frequencies. The frequencies in the Public Safety Pool Low Power Group are
         available nationwide on a coordinated basis, pursuant to §§ 90.20(c)(2) and 90.175(b).

           (1) Base, mobile or operational fixed stations will be authorized on Public Safety Low Power frequencies.
               Fixed stations may be licensed as mobile.

           (2) Operation on these frequencies is limited to 6 watts effective radiated power for base, mobile or
               operational fixed stations and 2 watts ERP for portable units. A maximum antenna height of 7
               meters (20 feet) above ground is authorized for fixed stations.

47 CFR 90.267(g)(2) (enhanced display)                                                                  page 269 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.267(g)(3)
Private Land Mobile Radio Services

           (3) The Public Safety Pool Low Power Frequencies are as follows:

                 453/458.03125                453/458.13125         453/458.95625            460/465.53125
                 453/458.0375                 453/458.1375          453/458.9625             460/465.5375
                 453/458.04375                453/458.14375         453/458.96875            460/465.54375
                 453/458.05625                453/458.88125         453/458.98125            460/465.55625
                 453/458.0625                 453/458.8875          453/458.9875             460/465.5625
                 453/458.06875                453/458.89375         453/458.99375            460/465.56875
                 453/458.08125                453/458.90625         460/465.48125
                 453/458.0875                 453/458.9125          460/465.4875
                 453/458.09375                453/458.91875         460/465.49375
                 453/458.10625                453/458.93125         460/465.50625
                 453/458.1125                 453/458.9375          460/465.5125
                 453/458.11875                453/458.94375         460/465.51875

     (h) Unless otherwise noted, the following conditions apply to all low power frequencies:

           (1) Except for itinerant operations on Group C, wide area operations will not be authorized. The area of
               normal day-to-day operations will be described in the application in terms of maximum distance
               from a geographic center (latitude and longitude).

           (2) A hospital or health care institution holding a license to operate a radio station under this part may
               operate a medical radio telemetry device with an output power not to exceed 20 milliwatts without
               specific authorization from the Commission. All licensees operating under this authority must
               comply with the requirements and limitations set forth in this section.

           (3) No limit shall be placed on the length or height above ground level of any commercially
               manufactured radiating transmission line when the transmission line is terminated in a non-radiating
               load and is routed at least 7 meters (20 feet) interior to the edge of any structure or is routed below
               ground level.

           (4) Sea-based stations may utilize antennas mounted not more than 7 meters (20 feet) above a man-
               made supporting structure, including antenna structures.

           (5) Continuous carrier operations are prohibited on these frequencies.

           (6) Unless specified elsewhere in this part, licensees as of August 5, 1999, licensed for operations with
               an emission designator wider than 11.25 kHz on low power frequencies that are subject to an
               authorized bandwidth of 11.25 kHz, may obtain primary status with respect to co-channel licensees
               by supplying their coordinates to the Commission. These licensees will continue to operate on a
               secondary basis with respect to adjacent channel licensees. Additionally, these licensees may
               continue to operate with an authorized bandwidth wider than 11.25 kHz on such low power
               frequencies, subject to the provisions of § 90.209(b) of this chapter.

           (7) Unless specified elsewhere in this part, licensees as of August 5, 1999, licensed for operations with
               an emission designator wider than 11.25 kHz on frequencies that are subject to an authorized
               bandwidth of 11.25 kHz, which are not low power frequencies, may obtain primary status with
               respect to co-channel licensees by modifying their license to low power frequencies, supplying their
               coordinates to the Commission, and otherwise complying with the conditions of paragraphs (b)

47 CFR 90.267(h)(7) (enhanced display)                                                                   page 270 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.267(h)(8)
Private Land Mobile Radio Services

                through (g) of this section. These licensees will continue to operate on a secondary basis with
                respect to adjacent channel licensees. Additionally, these licensees may continue to operate with an
                authorized bandwidth wider than 11.25 kHz on such low power frequencies, subject to the provisions
                of § 90.209(b) of this chapter.

           (8) Applicants proposing to operate with an authorized bandwidth wider than 11.25 kHz, on low power
               frequencies that are subject to an authorized bandwidth of 11.25 kHz, may be licensed on a
               secondary, non-interference basis. Such applicants are subject to the conditions of paragraphs (b)
               through (g) of this section and the provisions of § 90.209(b) of this chapter.

[68 FR 19461, Apr. 21, 2003; 68 FR 55319, Sept. 25, 2003, as amended at 69 FR 4254, Jan. 29, 2004; 75 FR 19284, Apr. 14, 2010;
83 FR 61097, Nov. 27, 2018]

§ 90.269 Use of frequencies for self-powered vehicle detectors.
     (a) Frequencies subject to § 90.20(d)(22) may be used for the operation of self-powered vehicle detectors by
         licensees of base/mobile stations in the Public Safety Pool in accordance with the following conditions:

           (1) All stations are limited to 100 milliwatts carrier power and 20K00F7W, 20K00F7X, 20K00F8W,
               20K00F8X, 20K00F9W or 20K00F9X emissions. The frequency deviation shall not exceed 5 kHz. No
               more than two 30 ms. pulses may be emitted for each vehicle sensed.

           (2) The transmitters must be crystal controlled with a frequency tolerance of plus or minus .005% from
               −20° to plus 50 °C. They must be certificated.

           (3) The total length of the transmission line plus antenna may not exceed one-half wavelength and must
               be integral with the unit.

           (4) All operation shall be on a secondary, non-interference basis.

     (b) [Reserved]

[48 FR 54982, Dec. 8, 1983, as amended at 54 FR 38681, Sept. 20, 1989; 62 FR 18929, Apr. 17, 1997; 63 FR 36610, July 7, 1998]

§ 90.273 Availability and use of frequencies in the 421–430 MHz band.
The frequency bands 422.1875–425.4875 MHz and 427.1875–429.9875 MHz are available for use in the Detroit,
Michigan and Cleveland, Ohio areas. The bands 423.8125–425.4875 MHz and 428.8125–429.9875 MHz are
available for use in the Buffalo, New York area. Sections 90.273 through 90.281 address the specific rules
applicable to these bands. Use of these bands is also subject to the general technical standards and application
procedures contained in other subparts of part 90. The technical standards applicable in this band are the same as
those contained in subpart I of part 90 for the 450–470 MHz band. Private land mobile use of these frequencies is
subject to accepting any interference from Federal Government radiolocation operations.

     (a) The following tables list frequencies available for assignment in the Public Safety and Industrial/Business
         Pools as indicated. In the tables, the Public Safety Pool frequencies are denoted as “PS” and the
         Industrial/Business Pool frequencies are denoted as “IB.” The frequencies 422.19375 MHz through
         424.99375 MHz are paired with frequencies 427.19375 MHz through 429.99375 MHz, respectively. Only
         the lower half of each frequency pair, available for base station operation, is listed in the tables.

47 CFR 90.273(a) (enhanced display)                                                                              page 271 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.273(a)
Private Land Mobile Radio Services

           Corresponding mobile and control station frequencies are 5 MHz higher than the base station frequency.
           The frequencies 425.000 through 425.48125 are unpaired and are available for either single frequency
           dispatch or paging operations.

                    Table 1—Channels Available in Detroit and Cleveland Areas Only

                           Frequency (MHz)                            Pool in which assigned
           Paired channels:
             422.19375 *                              IB
             422.200                                  IB
             422.20625 *                              IB
             422.21250                                IB
             422.21875 *                              IB
             422.225                                  IB
             422.23125 *                              IB
             422.23750                                IB
             422.24375 *                              IB
             422.250                                  IB
             422.25625 *                              IB
             422.26250                                IB
             422.26875 *                              IB
             422.275                                  IB
             422.28125 *                              IB
             422.28750                                IB
             422.29375 *                              IB
             422.300                                  IB
             422.30625 *                              IB
             422.31250                                IB
             422.31875 *                              IB
             422.325                                  IB
             422.33125 *                              IB
             422.33750                                IB
             422.34375 *                              IB
             422.350                                  IB
             422.35625 *                              IB
             422.36250                                IB
             422.36875 *                              IB
             422.375                                  IB
             422.38125 *                              IB
             422.38750                                IB
             422.39375 *                              IB
             422.400                                  IB

47 CFR 90.273(a) (enhanced display)                                                                 page 272 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             422.40625 *                      IB
             422.41250                        IB
             422.41875 *                      IB
             422.425                          IB
             422.43125 *                      IB
             422.43750                        IB
             422.44375 *                      IB
             422.450                          IB
             422.45625 *                      IB
             422.46250                        IB
             422.46875 *                      IB
             422.475                          IB
             422.48125 *                      IB
             422.48750                        IB
             422.49375 *                      IB
             422.500                          IB
             422.50625 *                      IB
             422.51250                        IB
             422.51875 *                      IB
             422.525                          IB
             422.53125 *                      IB
             422.53750                        IB
             422.54375 *                      IB
             422.550                          IB
             422.55625 *                      IB
             422.56250                        IB
             422.56875 *                      IB
             422.575                          IB
             422.58125 *                      IB
             422.58750                        IB
             422.59375 *                      IB
             422.600                          IB
             422.60625 *                      IB
             422.61250                        IB
             422.61875 *                      IB
             422.625                          IB
             422.63125 *                      IB
             422.63750                        IB
             422.64375 *                      IB
             422.650                          IB

47 CFR 90.273(a) (enhanced display)                                          page 273 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             422.65625 *                      IB
             422.66250                        IB
             422.66875 *                      IB
             422.675                          IB
             422.68125 *                      IB
             422.68750                        IB
             422.69375 *                      IB
             422.700                          IB
             422.70625 *                      IB
             422.71250                        IB
             422.71875 *                      IB
             422.725                          IB
             422.73125 *                      IB
             422.73750                        IB
             422.74375 *                      IB
             422.750                          IB
             422.75625 *                      IB
             422.76250                        IB
             422.76875 *                      IB
             422.775                          IB
             422.78125 *                      IB
             422.78750                        IB
             422.79375 *                      IB
             422.800                          IB
             422.80625 *                      IB
             422.81250                        IB
             422.81875 *                      IB
             422.825                          IB
             422.83125 *                      IB
             422.83750                        IB
             422.84375 *                      IB
             422.850                          IB
             422.85625 *                      IB
             422.86250                        IB
             422.86875 *                      IB
             422.875                          IB
             422.88125 *                      IB
             422.88750                        IB
             422.89375 *                      IB
             422.900                          IB

47 CFR 90.273(a) (enhanced display)                                          page 274 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             422.90625 *                      IB
             422.91250                        IB
             422.91875 *                      IB
             422.925                          IB
             422.93125 *                      IB
             422.93750                        IB
             422.94375 *                      IB
             422.950                          IB
             422.95625 *                      IB
             422.96250                        IB
             422.96875 *                      IB
             422.975                          IB
             422.98125 *                      IB
             422.98750                        IB
             422.99375 *                      IB
             423.000                          PS
             423.00625 *                      PS
             423.01250                        PS
             423.01875 *                      PS
             423.025                          PS
             423.03125 *                      PS
             423.03750                        PS
             423.04375 *                      PS
             423.050                          PS
             423.05625 *                      PS
             423.06250                        PS
             423.06875 *                      PS
             423.075                          PS
             423.08125 *                      PS
             423.08750                        PS
             423.09375 *                      PS
             423.100                          PS
             423.10625 *                      PS
             423.11250                        PS
             423.11875 *                      PS
             423.125                          PS
             423.13125 *                      PS
             423.13750                        PS
             423.14375 *                      PS
             423.150                          PS

47 CFR 90.273(a) (enhanced display)                                          page 275 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             423.15625 *                      PS
             423.16250                        PS
             423.16875 *                      PS
             423.175                          PS
             423.18125 *                      PS
             423.18750                        PS
             423.19375 *                      PS
             423.200                          PS
             423.20625 *                      PS
             423.21250                        PS
             423.21875 *                      PS
             423.225                          PS
             423.23125 *                      PS
             423.23750                        PS
             423.24375 *                      PS
             423.250                          PS
             423.25625 *                      PS
             423.26250                        PS
             423.26875 *                      PS
             423.275                          PS
             423.28125 *                      PS
             423.28750                        PS
             423.29375 *                      PS
             423.300                          PS
             423.30625 *                      PS
             423.31250                        PS
             423.31875 *                      PS
             423.325                          PS
             423.33125 *                      PS
             423.33750                        PS
             423.34375 *                      PS
             423.350                          PS
             423.35625 *                      PS
             423.36250                        PS
             423.36875 *                      PS
             423.375                          PS
             423.38125 *                      PS
             423.38750                        PS
             423.39375 *                      PS
             423.400                          PS

47 CFR 90.273(a) (enhanced display)                                          page 276 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             423.40625 *                      PS
             423.41250                        PS
             423.41875 *                      PS
             423.425                          PS
             423.43125 *                      PS
             423.43750                        PS
             423.44375 *                      PS
             423.450                          PS
             423.45625 *                      PS
             423.46250                        PS
             423.46875 *                      PS
             423.475                          PS
             423.48125 *                      PS
             423.48750                        PS
             423.49375 *                      PS
             423.500                          PS
             423.50625 *                      PS
             423.51250                        PS
             423.51875 *                      PS
             423.525                          PS
             423.53125 *                      PS
             423.53750                        PS
             423.54375 *                      PS
             423.550                          PS
             423.55625 *                      PS
             423.56250                        PS
             423.56875 *                      PS
             423.575                          PS
             423.58125 *                      PS
             423.58750                        PS
             423.59375 *                      PS
             423.600                          PS
             423.60625 *                      PS
             423.61250                        PS
             423.61875 *                      PS
             423.625                          PS
             423.63125 *                      PS
             423.63750                        PS
             423.64375 *                      PS
             423.650                          PS

47 CFR 90.273(a) (enhanced display)                                          page 277 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                 47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)                            Pool in which assigned
             423.65625 *                              PS
             423.66250                                PS
             423.66875 *                              PS
             423.675                                  PS
             423.68125 *                              PS
             423.68750                                PS
             423.69375 *                              PS
             423.700                                  PS
             423.70625 *                              PS
             423.71250                                PS
             423.71875 *                              PS
             423.725                                  PS
             423.73125 *                              PS
             423.73750                                PS
             423.74375 *                              PS
             423.750                                  PS
             423.75625 *                              PS
             423.76250                                PS
             423.76875 *                              PS
             423.775                                  PS
             423.78125 *                              PS
             423.78750                                PS
             423.79375 *                              PS
             423.800                                  PS
             423.80625 *                              PS

           * This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

                  Table 2—Channels Available in Buffalo, Detroit and Cleveland Areas

                           Frequency (MHz)                            Pool in which assigned
           Paired channels:
             423.81875 *                              PS
             423.825                                  PS
             423.83125 *                              PS
             423.83750                                PS
             423.84375 *                              PS
             423.850                                  PS
             423.85625 *                              PS
             423.86250                                PS

47 CFR 90.273(a) (enhanced display)                                                               page 278 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             423.86875 *                      PS
             423.875                          PS
             423.88125 *                      PS
             423.88750                        PS
             423.89375 *                      PS
             423.900                          PS
             423.90625 *                      PS
             423.91250                        PS
             423.91875 *                      PS
             423.925                          PS
             423.93125 *                      PS
             423.93750                        PS
             423.94375 *                      PS
             423.950                          PS
             423.95625 *                      PS
             423.96250                        PS
             423.96875 *                      PS
             423.975                          PS
             423.98125 *                      PS
             423.98750                        PS
             423.99375 *                      PS
             424.000                          PS
             424.00625 *                      PS
             424.01250                        PS
             424.01875 *                      PS
             424.025                          PS
             424.03125 *                      PS
             424.03750                        PS
             424.04375 *                      PS
             424.050                          PS
             424.05625 *                      PS
             424.06250                        PS
             424.06875 *                      PS
             424.075                          PS
             424.08125 *                      PS
             424.08750                        PS
             424.09375 *                      PS
             424.100                          PS
             424.10625 *                      PS
             424.11250                        PS

47 CFR 90.273(a) (enhanced display)                                          page 279 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             424.11875 *                      PS
             424.125                          PS
             424.13125 *                      PS
             424.13750                        PS
             424.14375 *                      PS
             424.150                          PS
             424.15625 *                      PS
             424.16250                        PS
             424.16875 *                      PS
             424.175                          PS
             424.18125 *                      PS
             424.18750                        PS
             424.19375 *                      PS
             424.200                          PS
             424.20625 *                      PS
             424.21250                        PS
             424.21875 *                      PS
             424.225                          PS
             424.23125 *                      PS
             424.23750                        PS
             424.24375 *                      PS
             424.250                          PS
             424.25625 *                      PS
             424.26250                        PS
             424.26875 *                      PS
             424.275                          PS
             424.28125 *                      PS
             424.28750                        PS
             424.29375 *                      PS
             424.300                          PS
             424.30625 *                      PS
             424.31250                        PS
             424.31875 *                      PS
             424.325                          PS
             424.33125 *                      PS
             424.33750                        PS
             424.34375 *                      PS
             424.350                          PS
             424.35625 *                      PS
             424.36250                        PS

47 CFR 90.273(a) (enhanced display)                                          page 280 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             424.36875 *                      PS
             424.375                          PS
             424.38125 *                      PS
             424.38750                        PS
             424.39375 *                      PS
             424.400                          IB
             424.40625 *                      IB
             424.41250                        IB
             424.41875 *                      IB
             424.425                          IB
             424.43125 *                      IB
             424.43750                        IB
             424.44375 *                      IB
             424.450                          IB
             424.45625 *                      IB
             424.46250                        IB
             424.46875 *                      IB
             424.475                          IB
             424.48125 *                      IB
             424.48750                        IB
             424.49375 *                      IB
             424.500                          IB
             424.50625 *                      IB
             424.51250                        IB
             424.51875 *                      IB
             424.525                          IB
             424.53125 *                      IB
             424.53750                        IB
             424.54375 *                      IB
             424.550                          IB
             424.55625 *                      IB
             424.56250                        IB
             424.56875 *                      IB
             424.575                          IB
             424.58125 *                      IB
             424.58750                        IB
             424.59375 *                      IB
             424.600                          IB
             424.60625 *                      IB
             424.61250                        IB

47 CFR 90.273(a) (enhanced display)                                          page 281 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             424.61875 *                      IB
             424.625                          IB
             424.63125 *                      IB
             424.63750                        IB
             424.64375 *                      IB
             424.650                          IB
             424.65625 *                      IB
             424.66250                        IB
             424.66875 *                      IB
             424.675                          IB
             424.68125 *                      IB
             424.68750                        IB
             424.69375 *                      IB
             424.700                          IB
             424.70625 *                      IB
             424.71250                        IB
             424.71875 *                      IB
             424.725                          IB
             424.73125 *                      IB
             424.73750                        IB
             424.74375 *                      IB
             424.750                          IB
             424.75625 *                      IB
             424.76250                        IB
             424.76875 *                      IB
             424.775                          IB
             424.78125 *                      IB
             424.78750                        IB
             424.79375 *                      IB
             424.800                          IB
             424.80625 *                      IB
             424.81250                        IB
             424.81875 *                      IB
             424.825                          IB
             424.83125 *                      IB
             424.83750                        IB
             424.84375 *                      IB
             424.850                          IB
             424.85625 *                      IB
             424.86250                        IB

47 CFR 90.273(a) (enhanced display)                                          page 282 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             424.86875 *                      IB
             424.875                          IB
             424.88125 *                      IB
             424.88750                        IB
             424.89375 *                      IB
             424.900                          IB
             424.90625 *                      IB
             424.91250                        IB
             424.91875 *                      IB
             424.925                          IB
             424.93125 *                      IB
             424.93750                        IB
             424.94375 *                      IB
             424.950                          IB
             424.95625 *                      IB
             424.96250                        IB
             424.96875 *                      IB
             424.975                          IB
             424.98125 *                      IB
             424.98750                        IB
             424.99375 *                      IB
           Single channels:
             425.000                          IB
             425.00625 *                      IB
             425.01250                        IB
             425.01875 *                      IB
             425.025                          IB
             425.03125 *                      IB
             425.03750                        IB
             425.04375 *                      IB
             425.050                          IB
             425.05625 *                      IB
             425.06250                        IB
             425.06875 *                      IB
             425.075                          IB
             425.08125 *                      IB
             425.08750                        IB
             425.09375 *                      IB
             425.100                          IB
             425.10625 *                      IB

47 CFR 90.273(a) (enhanced display)                                          page 283 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                            47 CFR 90.273(a)
Private Land Mobile Radio Services

                           Frequency (MHz)         Pool in which assigned
             425.11250                        IB
             425.11875 *                      IB
             425.125                          IB
             425.13125 *                      IB
             425.13750                        IB
             425.14375 *                      IB
             425.150                          IB
             425.15625 *                      IB
             425.16250                        IB
             425.16875 *                      IB
             425.175                          IB
             425.18125 *                      IB
             425.18750                        IB
             425.19375 *                      IB
             425.200                          IB
             425.20625 *                      IB
             425.21250                        IB
             425.21875 *                      IB
             425.225                          IB
             425.23125 *                      IB
             425.23750                        IB
             425.24375 *                      IB
             425.250                          PS
             425.25625 *                      PS
             425.26250                        PS
             425.26875 *                      PS
             425.275                          PS
             425.28125 *                      PS
             425.28750                        PS
             425.29375 *                      PS
             425.300                          PS
             425.30625 *                      PS
             425.31250                        PS
             425.31875 *                      PS
             425.325                          PS
             425.33125 *                      PS
             425.33750                        PS
             425.34375 *                      PS
             425.350                          PS
             425.35625 *                      PS

47 CFR 90.273(a) (enhanced display)                                          page 284 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.273(b)
Private Land Mobile Radio Services

                           Frequency (MHz)                                   Pool in which assigned
             425.36250                                     PS
             425.36875 *                                   PS
             425.375                                       PS
             425.38125 *                                   PS
             425.38750                                     PS
             425.39375 *                                   PS
             425.400                                       PS
             425.40625 *                                   PS
             425.41250                                     PS
             425.41875 *                                   PS
             425.425                                       PS
             425.43125 *                                   PS
             425.43750                                     PS
             425.44375 *                                   PS
             425.450                                       PS
             425.45625 *                                   PS
             425.46250                                     PS
             425.46875 *                                   PS
             425.475                                       PS
             425.48125 *                                   PS

           * This frequency will be assigned with an authorized bandwidth not to exceed 6 kHz.

     (b) [Reserved]

     (c) Base or control stations shall be located within 48 km (30 miles) of the center of Buffalo or 80 km (50
         miles) of the center of Detroit. In Cleveland, base or control stations will be allowed at locations north of
         line A that are within 48 km (30 miles) of the city center. In addition, low power (2 watts or less) base
         stations may locate within 80 km (50 miles) of the center of Buffalo. The following coordinates shall be
         used for the centers of these areas (coordinates are referenced to North American Datum 1983 (NAD83)):

           Buffalo, NY                            42°52′52.2″ North latitude.
                                                  78°52′20.1″ West longitude.
           Cleveland, OH                          41°29′51.2″ North latitude.
                                                  81°41′49.5″ West longitude.
           Detroit, MI                            42°19′48.1″ North latitude.
                                                  83°02′56.7″ West longitude.

     (d) Mobile operation shall be confined to within 80 km (50 miles) of the centers of Detroit, Cleveland, or
         Buffalo.

[52 FR 6156, Mar. 2, 1987, as amended at 54 FR 38681, Sept. 20, 1989; 58 FR 31476, June 3, 1993; 58 FR 44957, Aug. 25, 1993;
60 FR 37269, July 19, 1995; 61 FR 6576, Feb. 21, 1996; 62 FR 18929, Apr. 17, 1997; 63 FR 68965, Dec. 14, 1998]

47 CFR 90.273(d) (enhanced display)                                                                            page 285 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.275
Private Land Mobile Radio Services

§ 90.275 Selection and assignment of frequencies in the 421–430 MHz band.
Applicants must specify the frequencies in which the proposed system will operate pursuant to a recommendation
by a frequency coordinator certified for the pool in which the requested frequency is assigned.

[62 FR 18932, Apr. 17, 1997]

§ 90.279 Power limitations applicable to the 421–430 MHz band.
     (a) Base station authorizations in the 421–430 MHz band will be subject to Effective Radiated Power (ERP)
         and Effective Antenna Height (EAH) limitations as shown in the table below. ERP is defined as the product
         of the power supplied to the antenna and its gain relative to a half-wave dipole in a given direction. EAH is
         calculated by subtracting the Assumed Average Terrain Elevation (AATE) as listed in table 7 of § 90.619
         from the antenna height above mean sea level.

           Limits of Effective Radiated Power (ERP) Corresponding to Effective Antenna
                     Heights (EAH) of Base Stations in the 421–430 MHz Band

              Effective antenna height (EAH) in meters (feet)      Maximum effective radiated power (ERP) (watts)
            0–152 (0–500)                                                                                      250
            Above 152–305 (above 500–1000)                                                                     150
            Above 305–457 (above 1000–1500)                                                                     75
            Above 457–610 (above 1500–2000)                                                                     40
            Above 610–762 (above 2000–2500)                                                                     20
            Above 762–914 (above 2500–3000)                                                                     15
            Above 914–1219 (above 3000–4000)                                                                    10
            Above 1219 (above 4000)                                                                                 5

     (b) The maximum transmitter power output that will be authorized for control stations is 20 watts.

[52 FR 6157, Mar. 2, 1987, as amended at 58 FR 44957, Aug. 25, 1993]

§ 90.281 Restrictions on operational fixed stations in the 421–430 MHz band.
     (a) Except for control stations, operational fixed facilities will not be authorized in the 421–430 MHz band.
         This does not preclude secondary fixed tone signaling and alarm operations authorized in § 90.235.

     (b) Control stations associated with one or more mobile relay stations will be authorized only on the assigned
         frequency of the associated mobile station. Use of a mobile service frequency by a control station of a
         mobile relay system is subject to the condition that harmful interference shall not be caused to stations of
         licensees authorized to use the frequency for mobile service communications.

[52 FR 6158, Mar. 2, 1987, as amended at 54 FR 38681, Sept. 20, 1989]

§ 90.283 [Reserved]

Subpart L—Authorization in the Band 470–512 MHz (UHF-TV Sharing)
47 CFR 90.283 (enhanced display)                                                                            page 286 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                               47 CFR 90.301
Private Land Mobile Radio Services

§ 90.301 Scope.
This subpart governs the authorization and use of frequencies by land mobile stations in the band 470–512 MHz on
a geographically shared basis with Television Broadcast stations. Under this special sharing plan, different
frequencies are allocated depending on the geographic urban area involved as fully detailed in the following rule
sections.

[43 FR 54791, Nov. 22, 1978, as amended at 62 FR 18932, Apr. 17, 1997]

§ 90.303 Availability of frequencies.
     (a) Frequencies in the band 470–512 MHz are available for assignment as described below. Note:
         coordinates are referenced to the North American Datum 1983 (NAD83).

     (b) The following table lists frequency bands that are available for assignment in specific urban areas. The
         available frequencies are listed in § 90.311 of this part.

                                                Geographic center
                    Urbanized area                                               Bands (MHz)           TV channels
                                          North latitude West longitude
           Boston, MA                     42°21′24.4″    71°03′23.2″               470–476, 482–488          14, 16
           Chicago,    IL1                41°52′28.1″    87°38′22.2″               470–476, 476–482          14, 15
           Cleveland,   OH2               41°29′51.2″    81°49′49.5″               470–476, 476–482          14, 15
           Dallas/Fort Worth, TX          32°47′09.5″    96°47′38.0″                        482–488                16
           Detroit,   MI3                 42°19′48.1″    83°02′56.7″               476–482, 482–488          15, 16
           Houston, TX                    29°45′26.8″    95°21′37.8″                        488–494                17
           Los Angeles,      CA4          34°03′15.0″    118°14′31.3″     470–476, 482–488, 506–512       14, 16, 20
           Miami, FL                      25°46′38.4″    80°11′31.2″                        470–476                14
           New York, NY/NE NJ             40°45′06.4″    73°59′37.5″      470–476, 476–482, 482–488       14, 15, 16
           Philadelphia, PA               39°56′58.4″    75°09′19.6″               500–506, 506–512          19, 20
           Pittsburgh, PA                 40°26′19.2″    79°59′59.2″               470–476, 494–500          14, 18
           San Francisco/Oakland, CA 37°46′38.7″         122°24′43.9″              482–488, 488–494          16, 17
           Washington, DC/MD/VA           38°53′51.4″    77°00′31.9″               488–494, 494–500          17, 18

           1 In the Chicago, IL, urbanized area, channel 15 frequencies may be used for paging operations in
           addition to low power base/mobile usages, where applicable protection requirements for ultrahigh
           frequency television stations are met.

           2   Channels 14 and 15 are not available in Cleveland, OH, until further order from the Commission.

           3   Channels 15 and 16 are not available in Detroit, MI, until further order from the Commission.

           4   Channel 16 is available in Los Angeles, CA, for use by eligibles in the Public Safety Radio Pool.

     (c) The band 482–488 MHz (TV Channel 16) is available for use by eligibles in the Public Safety Radio Pool in
         the following areas: New York City; Nassau, Suffolk, and Westchester counties in New York State; and
         Bergen County, New Jersey. All part 90 rules shall apply to said operations, except that:

47 CFR 90.303(c) (enhanced display)                                                                         page 287 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.303(c)(1)
Private Land Mobile Radio Services

           (1) Location of stations. Base stations shall be located in the areas specified in this paragraph (c).
               Mobile stations may operate throughout the areas specified in this paragraph (c) and may
               additionally operate in areas not specified in this paragraph (c) provided that the distance from the
               Empire State Building (40° 44′ 54.4″ N, 73° 59′ 8.4″ W) does not exceed 48 kilometers (30 miles).

           (2) Protection criteria. In order to provide co-channel television protection, the following height and
               power restrictions are required:

                 (i)   Except as specified in paragraph (c)(2)(ii) of this section, base stations shall be limited to a
                       maximum effective radiated power (ERP) of 225 watts at an antenna height of 152.5 meters
                       (500 feet) above average terrain (AAT). Adjustment of the permitted power will be allowed
                       provided it is in accordance with the “169 kilometer Distance Separation” entries specified in
                       Table B in 47 CFR 90.309(a) or the “LM/TV Separation 110 miles (177 km)” curve in Figure B in
                       47 CFR 90.309(b).

                (ii) For base stations located west of the Hudson River, Kill Van Kull, and Arthur Kill, the maximum
                     ERP and antenna height shall be limited to the entries specified in Table B in 47 CFR 90.309(a)
                     or in Figure B in 47 CFR 90.309(b) for the actual separation distance between the base station
                     and the transmitter site of WNEP-TV in Scranton, PA (41° 10′ 58.0″ N, 75° 52′ 20.0″ W).

                (iii) Mobile stations shall be limited to 100 watts ERP in areas of operation extending eastward from
                      the Hudson River and to 10 watts ERP in areas of operation extending westward from the
                      Hudson River.

[69 FR 31907, June 8, 2004, as amended 72 FR 35196, June 27, 2007]

§ 90.305 Location of stations.
     (a) The transmitter site(s) for base station(s), including mobile relay stations, shall be located not more than
         80 km. (50 mi.) from the geographic center of the urbanized area listed in § 90.303.

     (b) Mobile units shall be operated within 48 km. (30 mi.) of their associated base station or stations. Such
         units may not be operated aboard aircraft in flight except as provided for in § 90.315(i).

     (c) Control stations must be located within the area of operation of the mobile units.

     (d) Base and control stations shall be located a minimum of 1.6 km. (1 mi.) from local television stations
         operating on UHF TV channels separated by 2, 3, 4, 5, 7, and 8 TV channels from the television channel in
         which the base station will operate.

§ 90.307 Protection criteria.
The tables and figures listed in § 90.309 shall be used to determine the effective radiated power (ERP) and antenna
height of the proposed land mobile base station and the ERP for the associated control station (control station
antenna height shall not exceed 31 meters (100 feet) above average terrain (AAT)).

     (a) Base stations operating on the frequencies available for land mobile use in any urbanized area and having
         an antenna height (AAT) less than 152 meters (500 feet) shall afford protection to co-channel and
         adjacent channel television stations in accordance with the values set out in tables A and E of § 90.309,
         except for channel 15 in New York, NY, and Cleveland, OH, and channel 16 in Detroit, MI, where protection
         will be in accordance with the values set forth in tables B and E in 47 CFR 90.309.

47 CFR 90.307(a) (enhanced display)                                                                       page 288 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.307(b)
Private Land Mobile Radio Services

     (b) For base stations having antenna heights between 152 and 914 meters (500–3000 feet) above average
         terrain, the effective radiated power must be reduced below 1 kilowatt in accordance with the values
         shown in the power reduction graph in Figure A in § 90.309, except for channel 15 in New York, NY, and
         Cleveland, OH, and channel 16 in Detroit, MI, where the effective radiated power must be reduced in
         accordance with Figure B in § 90.309. For heights of more than 152 meters (500 feet) above average
         terrain, the distance to the radio path horizon will be calculated assuming smooth earth. If the distance so
         determined equals or exceeds the distance to the Grade B contour of a co-channel TV station (Grade B
         contour defined in § 73.683(a) of this chapter), an authorization will not be granted unless it can be shown
         that actual terrain considerations are such as to provide the desired protection at the Grade B contour, or
         that the effective radiated power will be further reduced so that, assuming free space attenuation, the
         desired protection at the Grade B contour will be achieved.

     (c) Mobile units and control stations operating on the frequencies available for land mobile use in any given
         urbanized area shall afford protection to co-channel and adjacent channel television stations in
         accordance with the values set forth in table C in § 90.309 and paragraph (d) of this section except for
         channel 15 in New York, NY, and Cleveland, OH, and channel 16 in Detroit, MI, where protection will be in
         accordance with the values set forth in table D in § 90.309 and paragraph (d) of this section.

     (d) The minimum distance between a land mobile base station which has associated mobile units and a
         protected adjacent channel television station is 145 km (90 miles).

     (e) The television stations to be protected (co-channel, adjacent channel, IM, and IF) in any given urbanized
         area, in accordance with the provisions of paragraphs (a), (b), (c), and (d) of this section, are identified in
         the Commission's publication “TV stations to be considered in the preparation of Applications for Land
         Mobile Facilities in the Band 470–512 MHz.” The publication is available at the offices of the Federal
         Communications Commission in Washington, DC or upon the request of interested persons.

[72 FR 35197, June 27, 2007]

§ 90.309 Tables and figures.
     (a) Directions for using the tables.

           (1) Using the method specified in § 1.958 of this chapter, determine the distances between the
               proposed land mobile base station and the protected co-channel television station and between the
               proposed land mobile base station and the protected adjacent channel television station. If the exact
               mileage does not appear in table A for protected co-channel television stations (or table B for
               channel 15 in New York and Cleveland and channel 16 in Detroit) or table E for protected adjacent
               channel television stations, the next lower mileage separation figure is to be used.

           (2) Entering the proper table at the mileage figure found in paragraph (a)(1) of this section, find opposite,
               a selection of powers that may be used for antenna heights ranging from 15 m (50 ft) to 152.5 m
               (500 ft) (AAT). If the exact antenna height proposed for the land mobile base station does not
               appear in the proper table, use the power figure beneath the next greater antenna height.

           (3) The lowest power found using the tables mentioned in paragraphs (a)(1) and (a)(2) of this section is
               the maximum power that may be employed by the proposed land mobile base station.

           (4) In determining the average elevation of the terrain, the elevations between 3.2 kilometers (2 miles)
               and 16 kilometers (10 miles) from the antenna site are employed. Profile graphs shall be drawn for a
               minimum of eight radials beginning at the antenna site and extending 16 kilometers (10 miles). The

47 CFR 90.309(a)(4) (enhanced display)                                                                     page 289 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.309(a)(5)
Private Land Mobile Radio Services

                radials should be drawn starting with true north. At least one radial should be constructed in the
                direction of the nearest co-channel and adjacent channel UHF television stations. The profile graph
                for each radial shall be plotted by contour intervals of from 12.2 meters (40 feet) to 30.5 meters (100
                feet) and, where the data permits, at least 50 points of elevation (generally uniformly spaced) should
                be used for each radial. For very rugged terrain, 61 meters (200 feet) to 122 meters (400 foot)
                contour intervals may be used. Where the terrain is uniform or gently sloping, the smallest contour
                interval indicated on the topographic chart may be used. The average elevation of the 12.8 kilometer
                (8 mile) distance between 3.2 kilometers (2 miles) and 16 kilometers (10 miles) from the antenna
                site should be determined from the profile graph for each radial. This may be obtained by averaging
                a large number of equally spaced points, by using a planimeter, or by obtaining the median elevation
                (that exceeded by 50 percent of the distance) in sectors and averaging those values. In the
                preparation of the profile graphs, the elevation or contour intervals may be taken from U.S.
                Geological Survey Topographic Maps, U.S. Army Corps of Engineers Maps, or Tennessee Valley
                Authority Maps. Maps with a scale of 1:250,000 or larger (such as 1:24,000) shall be used. Digital
                Terrain Data Tapes, provided by the National Cartographic Institute, U.S. Geologic Survey, may be
                utilized in lieu of maps, but the number of data points must be equal to or exceed that specified
                above. If such maps are not published for the area in question, the next best topographic information
                should be used.

           (5) Applicants for base stations in the Miami, FL, urbanized area may, in lieu of calculating the height of
               average terrain, use 3 m (10 ft) as the average terrain height.

47 CFR 90.309(a)(5) (enhanced display)                                                                   page 290 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                                         47 CFR 90.309(a)(5)
Private Land Mobile Radio Services

       Table A—Base Station—Cochannel Frequencies (50 dB Protection) Maximum Effective Radiated Power (ERP)1

                                                                   Antenna height in meters (feet) (AAT)
Distance in kilometers (miles):2
                                   15 (50) 30.5 (100) 45 (150) 61 (200) 76 (250) 91.5 (300) 106 (350) 122 (400) 137 (450) 152.5 (500)
260 (162)                           1,000      1,000    1,000    1,000     1,000       1,000      1,000    1,000    1,000       1,000
257 (160)                           1,000      1,000    1,000    1,000     1,000       1,000      1,000    1,000    1,000        800
249 (155)                           1,000      1,000    1,000    1,000     1,000        875         775     700      625         575
241 (150)                           1,000      1,000     950       775      725         625         550     500      450         400
233 (145)                             850       750      650       575      500         440         400     350      320         300
225 (140)                             600       575      475       400      350         300         275     250      230         225
217 (135)                             450       400      335       300      255         240         200     185      165         150
209 (130)                             350       300      245       200      185         160         145     125      120         100
201 (125)                             225       200      170       150      125         110         100      90       80          75
193 (120)                             175       150      125       105       90           80         70      60       55          50
1   The effective radiated power (ERP) and antenna height above average terrain (AAT) shall not exceed the values given in this table.

2   At this distance from transmitter site of protected UHF television station.

47 CFR 90.309(a)(5) (enhanced display)                                                                                                       page 291 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                                        47 CFR 90.309(a)(5)
Private Land Mobile Radio Services

       Table B—Base Station—Cochannel Frequencies (40 dB Protection) Maximum Effective Radiated Power (ERP)1

                                                                   Antenna height in meters (feet) (AAT)
Distance in kilometers (miles):2
                                   15 (50) 30.5 (100) 45 (150) 61 (200) 76 (250) 91.5 (300) 106 (350) 122 (400) 137 (450) 152.5 (500)
209 (130)                           1,000      1,000    1,000    1,000     1,000       1,000      1,000    1,000    1,000       1,000
201 (125)                           1,000      1,000    1,000    1,000     1,000       1,000      1,000     850      750         725
193 (120)                           1,000      1,000    1,000    1,000      900         750         675     600      550         500
185 (115)                           1,100      1,000     800       725      600         525         475     425      375         350
177 (110)                             850       700      600       500      425         375         325     300      275         225
169 (105)                             600       475      400       325      275         250         225     200      175         150
161 (100)                             400       325      275       225      175         150         140     125      110         100
153 (95)                              275       225      175       125      110           95         80      70       60          50
145 (90)                              175       125      100        75       50
1   The effective radiated power (ERP) and antenna height above average terrain shall not exceed the values given in this table.

2   At this distance from the transmitter site of protected UHF television station.

47 CFR 90.309(a)(5) (enhanced display)                                                                                                      page 292 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.309(a)(5)
Private Land Mobile Radio Services

                     Table C—Mobile and Control Station—Distance Between Associated Base
                                 Station and Protected Cochannel TV Station

                [50 dB protection]

                                                                                                    Distance
                         Effective radiated power (watts) of mobile unit and control station
                                                                                               Kilometers      Miles
                 200                                                                                  249        155
                 150                                                                                  243        151
                 100                                                                                  233        145
                 50                                                                                   217        135
                 25                                                                                   201        125
                 10                                                                                   188        117
                 5                                                                                    180        112

                     Table D—Mobile and Control Station—Distance Between Associated Land
                            Mobile Base Station and Protected Cochannel TV Station

                [40 dB protection]

                                                                                                    Distance
                         Effective radiated power (watts) of mobile unit and control station
                                                                                               Kilometers      Miles
                 200                                                                                  209        130
                 150                                                                                  201        125
                 100                                                                                  193        120
                 50                                                                                   185        115
                 25                                                                                   177        110
                 10                                                                                   169        105
                 5                                                                                    161        100

47 CFR 90.309(a)(5) (enhanced display)                                                                 page 293 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                                          47 CFR 90.309(a)(5)
Private Land Mobile Radio Services

                Table E—Base Station Adjacent Channel Frequencies Maximum Effective Radiated Power (ERP)1

                                                                     Antenna height in meters (feet) (AAT)
Distance in kilometers (miles):2 3
                                     15 (50) 30.5 (100) 45 (150) 61 (200) 76 (250) 91.5 (300) 106 (350) 122 (400) 137 (450) 152.5 (500)
108 (67)                              1,000      1,000    1,000    1,000     1,000       1,000      1,000    1,000    1,000       1,000
106 (66)                              1,000      1,000    1,000    1,000     1,000       1,000      1,000    1,000    1,000        750
104 (65)                              1,000      1,000    1,000    1,000     1,000       1,000      1,000     825      650         600
103 (64)                              1,000      1,000    1,000    1,000     1,000       1,000        775     625      500         400
101 (63)                              1,000      1,000    1,000    1,000     1,000        650         450     325      325         225
99 (62)                               1,000      1,000    1,000    1,000      525         375         250     200      150         125
98 (61)                               1,000      1,000     700       450      250         200         125     100       75          50
96 (60)                               1,000      1,000     425       225      125         100          75      50
1   The effective radiated power (ERP) and antenna height above average terrain (AAT) shall not exceed the values given in this table.

2   At this distance from transmitter site of protected UHF television station.

3   The minimum distance is 145 km (90 miles) where there are mobile units associated with the base station. See sec. 90.307(d).

47 CFR 90.309(a)(5) (enhanced display)                                                                                                       page 294 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.309(b)
Private Land Mobile Radio Services

                    Table “F”—Decibel Reduction/Power Equivalents

           dB reduction below 1 kW                       ERP permitted (figures rounded)
 1                                                                                              795
 2                                                                                              630
 3                                                                                              500
 4                                                                                              400
 5                                                                                              315
 6                                                                                              250
 7                                                                                              200
 8                                                                                              160
 9                                                                                              125
 10                                                                                             100
 11                                                                                              80
 12                                                                                              65
 13                                                                                              50
 14                                                                                              40
 15                                                                                              30
 16                                                                                              25
 17                                                                                              20
 18                                                                                              15
 19                                                                                              12
 20                                                                                              10
 21                                                                                               8
 22                                                                                               6
 23                                                                                               5
 24                                                                                               4
 25                                                                                               3
 26                                                                                              2.5
 27                                                                                               2
 28                                                                                              1.5
 29                                                                                             1.25
 30                                                                                               1

      (b) Directions for Using the Figures.

           (1) Determine antenna height above average terrain. (According to § 90.309(a)(4).)

           (2) Locate this value on the antenna height axis.

           (3) Determine the separation between the LM antenna site and the nearest protected co-channel TV
               station. (According to § 73.611.)

47 CFR 90.309(b)(3) (enhanced display)                                                                  page 295 of 516
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                                                                                                   47 CFR 90.309(b)(4)
Private Land Mobile Radio Services

           (4) Draw a vertical line to intersect the LM/TV separation curve at the distance determined in step 3
               above. For distances not shown in the graph use linear interpolation.

           (5) From the intersection of the LM/TV separation curve draw a horizontal line to the power reduction
               scale.

           (6) The power reduction in dB determines the reduction below 1 kW that must be achieved.

           (7) See table F for dB/power equivalents.

47 CFR 90.309(b)(7) (enhanced display)                                                                 page 296 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.309(b)(7)
Private Land Mobile Radio Services

47 CFR 90.309(b)(7) (enhanced display)            page 297 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.309(b)(7)
Private Land Mobile Radio Services

47 CFR 90.309(b)(7) (enhanced display)           page 298 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 90.311
Private Land Mobile Radio Services

(Section 0.231(d) of the Commission's Rules and secs. 4(i) and 303 of the Communications Act, as amended)

[43 FR 54791, Nov. 22, 1978, as amended at 49 FR 36107, Sept. 14, 1984; 49 FR 49837, Dec. 17, 1984; 58 FR 44958, Aug. 25,
1993; 70 FR 19312, Apr. 13, 2005; 72 FR 35197, June 27, 2007]

§ 90.311 Frequencies.
     (a) Except as provided for in § 90.315 and except for those frequencies allocated to services in part 22 of this
         chapter (see §§ 22.591, 22.621, 22.651, and 22.1007 of this chapter) the following frequencies in the
         band 470–512 MHz may be assigned as indicated in the table below. The first and last assignable
         frequencies are shown. Assignable frequencies occur in increments of 6.25 kHz. The separation between
         base and mobile transmit frequencies is 3 MHz for two frequency operation.

              Channel                                                                    General access pool
                                                Urbanized Area
             Assignment                                                         Base and mobile          Mobile
           14                Boston, MA                                         470.30625 to        473.30625 to
                             Chicago, IL                                        472.99375           475.99375
                             Cleveland, OH
                             Miami, FL
                             New York/N.E. NJ
                             Pittsburgh, PA
                             Los Angeles, CA                                    470.05625 to        473.05625 to
                                                                                472.99375           475.99375
           15                Chicago, IL                                        476.30625 to        479.30625 to
                             Cleveland, OH                                      478.99375           481.99375
                             Detroit, MI
                             New York/N.E. NJ
           16                Boston, MA                                         482.30625 to        485.30625 to
                             Dallas/Fort Worth, TX                              484.99375           487.99375
                             Detroit, MI
                             San Francisco/Oakland, CA
                             Los Angeles, CA (Use is restricted to Public       482.00625 to        485.00625 to
                             Safety Pool eligibles)                             484.99375           487.99375
           17                Houston, TX                                        488.30625 to        491.30625 to
                             San Francisco/Oakland, CA                          490.99375           493.99375
                             Washington, DC/MD/VA
           18                Pittsburgh, PA                                     494.30625 to        497.30625 to
                             Washington, DC/MD/VA                               496.99375           499.99375
           19                Philadelphia, PA                                   500.30625 to        503.30625 to
                                                                                502.99375           505.99375
           20                Los Angeles, CA                                    506.13125 to        509.13125 to
                                                                                508.99375           511.99375
                             Philadelphia, PA                                   506.30625 to        509.30625 to
                                                                                508.99375           511.99375

           (1) Channel availability in the General Access Pool in any of the urbanized areas referred to in the table
               depends on whether that channel is presently assigned to one of the following categories of users:
47 CFR 90.311(a)(1) (enhanced display)                                                                         page 299 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.311(a)(1)(i)
Private Land Mobile Radio Services

                 (i)   Public safety (as defined in § 90.20(a));

                (ii) Power and telephone maintenance licensees (as defined in § 90.7);

                (iii) Special industrial licensees (as defined in § 90.7);

                (iv) Business licensees (as defined in § 90.35(a));

                (v) Petroleum, forest products, and manufacturers licensees (as defined in § 90.7);

                (vi) Railroad, motor carrier, and automobile emergency licensees (as defined in § 90.7); and

                (vii) Taxicab licensees (as defined in § 90.7).

           (2) If assigned, subsequent authorizations will only be granted to users from the same category. If
               unassigned, or should a channel subsequently become unassigned, it will be treated as available in
               the General Access Pool.

           (3) Normally, each channel should be substantially loaded in accordance with the standards set out in §
               90.313.

           (4) The following frequencies will be authorized a maximum bandwidth of 6 kHz.

                                     Channel                                              Frequency
                 14                                                                                               470.30625
                                                                                                                  475.99375
                 15                                                                                               476.30625
                                                                                                                  481.99375
                 16                                                                                               482.30625
                                                                                                                  487.99375
                 17                                                                                               488.30625
                                                                                                                  493.99375
                 18                                                                                               494.30625
                                                                                                                  499.99375
                 19                                                                                               500.30625
                                                                                                                  505.99375
                 20                                                                                               506.30625
                                                                                                                  511.99375

     (b) [Reserved]

[43 FR 54791, Nov. 22, 1978, as amended at 44 FR 49692, Aug. 24, 1979; 51 FR 4362, Feb. 4, 1986; 60 FR 37272, July 19, 1995; 62
FR 2041, Jan. 15, 1997; 62 FR 18932, Apr. 17, 1997; 64 FR 36270, July 6, 1999]

§ 90.313 Frequency loading criteria.
     (a) Except as provided for in paragraph (b) of this section, the maximum channel loading on frequencies in
         the 470–512 MHz band is as follows:

           (1) 50 units for systems eligible in the Public Safety Pool (see § 90.20(a)).

47 CFR 90.313(a)(1) (enhanced display)                                                                         page 300 of 516
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                                                                                                     47 CFR 90.313(a)(2)
Private Land Mobile Radio Services

           (2) 90 units for systems eligible in the Industrial/Business Pool (see § 90.35(a)).

     (b) If a licensee has exclusive use of a frequency, then the loading standards in paragraph (a) of this section,
         may be exceeded. If it is a shared channel, the loading standards can be exceeded upon submission of a
         signed statement by all those sharing the channel agreeing to the increase.

     (c) A unit is defined as a mobile transmitter-receiver. Loading standards will be applied in terms of the
         number of units actually in use or to be placed in use within 8 months following authorization. A licensee
         will be required to show that an assigned frequency pair is at full capacity before it may be assigned a
         second or additional frequency pair. Channel capacity may be reached either by the requirements of a
         single licensee or by several users sharing a channel. Until a channel is loaded to capacity it will be
         available for assignment to other users in the same area. A frequency pair may be reassigned at
         distances 64 km. (40 mi.), 32 km. (20 mi.) for Channel 15, Chicago; Channel 20, Philadelphia; and Channel
         17, Washington, or more from the location of base stations authorized on that pair without reference to
         loading at the point of original installation. Following authorization, the licensee shall notify the
         Commission either during or at the close of the 8 month period of the number of units in operation. In the
         Industrial Radio Services, if the base station facility is to be used by more than a single licensee, the
         frequency assigned to it will not be reassigned for use by another facility within 64 km. (40 mi.) or 32 km.
         (20 mi.) where applicable for a period of 12 months, Provided, That the facility is constructed within 90
         days from the date of the first grant, meets the loading standards to at least 50 percent within 9 months,
         and meets all loading standards within 12 months.

[43 FR 54791, Nov. 22, 1978, as amended at 47 FR 36649, Aug. 23, 1982; 62 FR 18933, Apr. 17, 1997]

§ 90.315 Special provisions governing use of frequencies in the 476–494 MHz band (TV Channels
15, 16, 17) in the Southern Louisiana-Texas Offshore Zone.
     (a) The frequency bands from 490–491 and 493–494 MHz will be available for assignment to stations
         governed by this part within Zone A. The boundaries of Zone A are from longitude 87°45′ on the east to
         longitude 94°00′ on the west, and from the 3-mile limit along the Gulf of Mexico shoreline on the north to
         the limit of the Outer Continental Shelf on the south. The frequency bands from 484–485 and 476–488
         MHz will be available for assignment to stations governed by this part within Zone B. The boundaries of
         Zone B are from longitude 87°45′ on the east to longitude 95°00′ on the west and from the 3-mile limit
         along the Gulf of Mexico shoreline on the north to the limit of the Outer Continental Shelf on the south.
         The frequency bands from 478–479 and 481–481 MHz will be available for assignment to stations
         governed by this part within Zone C. The boundaries of Zone C are from longitude 94°00′ on the east, the
         3-mile limit on the north and west, a 281 km (175 mile) radius from the reference point at Linares, N.L.,
         Mexico on the southwest, latitude 26°00′ on the south, and the limits of the Outer Continental Shelf on the
         southeast. These frequencies may also be assigned to fixed stations located on shore designed to
         provide communications service within the zone.

     (b) Offshore base/mobile, and offshore and shore fixed stations may be authorized.

     (c) F2, F3, F4, F9, and A2, A3, A4, and A9 emissions may be authorized.

     (d) Offshore stations shall afford cochannel protection to TV stations on Channels 15, 16 and 17. Station
         operating parameters shall be in accordance with the values given in table 1 of this section.

47 CFR 90.315(d) (enhanced display)                                                                     page 301 of 516
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                                                                                                          47 CFR 90.315(e)
Private Land Mobile Radio Services

            Table 1—Protection of Cochannel Television Stations by Offshore Stations
           Operating in the Southern Louisiana-Texas Offshore Zone (65 dB Protection);
                               Maximum Effective Radiated Power

           [In Watts]

                                                                            Antenna Height above sea level meters
            Distance from transmitter to co-channel TV station kilometers
                                                                                            (feet)
                                       (miles)
                                                                            30.5 (100)     45 (150)     61 (200)
           338 (210)                                                               1,000       1,000        1,000
           330 (205)                                                               1,000         900          800
           322 (200)                                                                800          710          630
           314 (195)                                                                590          520          450
           306 (190)                                                                450          400          330
           298 (185)                                                                320          280          240
           290 (180)                                                                250          210          175
           281 (175)                                                                175          150          130
           274 (170)                                                                130          110          100
           265 (165)                                                                  95          80           70
           257 (160)                                                                  65          55           50
           249 (155)                                                                  50          40           35
           241 (150)                                                                  35          30           25

           Note: To determine the maximum permissible effective radiated power:
           (1) As specified in § 73.611 determine the distance between the proposed station and the
           cochannel television station. If the exact distance does not appear in table 1 of this section, the
           next lower distance separation is to be used.

           (2) Opposite this distance figure ERPs are given that may be used for antenna heights of 30.5, 45
           or 61 meters (100, 150 or 200 ft) ASL. If the exact antenna height is not shown, the ERP allowed
           will be that shown for the next higher antenna height.

     (e) Shore stations communicating point-to-point with offshore stations will be permitted at least the same
         ERP as the offshore station, but only in the direction of the offshore station. A directional antenna shall be
         used and the rearward radiated power from the antenna in a sector ±221⁄2° from the line joining the shore
         antenna to the cochannel television station shall not exceed those shown in table 2 of this section.

47 CFR 90.315(e) (enhanced display)                                                                       page 302 of 516
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                                                                                                          47 CFR 90.315(f)
Private Land Mobile Radio Services

            Table 2—Maximum Rearward Effective Radiated Power Allowed for Shore
           Stations; Rearward Effective Radiated Power (in Watts) From Shore Antenna
               in a Sector <±>221⁄2° From the Line Joining the Shore Antenna to the
                                   Cochannel Television Station

                                                                  Antenna height above ground in meters (feet)
              Distance from transmitter to cochannel television
                                                                   30.5     45    61     91.5   152.5       228
                          station: kilometers (miles)
                                                                  (100)   (150) (200)   (300)   (500)      (750)
           298 (185)                                                320    280   240      190      125         90
           290 (180)                                                250    210   175      125      100         60
           281 (175)                                                175    150   130      100        70        50
           274 (170)                                                130    110   100       75        40        35
           265 (165)                                                 95     82     70      50        35        25
           257 (160)                                                 65     55     50      40        25        20
           249 (155)                                                 50     40     35      30        20        15
           241 (150)                                                 35     30     25      20        15        10
           233 (145)                                                 25     20     18      15        10          7
           225 (140)                                                 18     15     13      10         7          5
           217 (135)                                                 13     10      9       7         5          3
           209 (130)                                                 10      8      6       5         3          2
           201 (125)                                                  7      6      5       4         3          2
           193 (120)                                                  5      4      3       3         2          1

           Note: As an example of the use of tables 1 and 2, assume an offshore station located 290 km (180
           mi) from TV Channel 17 located in Bude, Miss. with an antenna height of 30.5 m (100 ft). Table 1
           allows this station to operate with 250 W ERP. Now assume the shore station communicating with
           the offshore station is 48 km (30 mi) from the offshore station and 241 km (150 mi) from Bude,
           Miss. The shore station antenna height is 152.5 m (500 ft) above ground. The shore station will be
           allowed the same ERP as the offshore station (250 W) in the direction of the offshore station.
           Table 2 indicates that the effective radiated power in a sector <±>221⁄2° from the line joining the
           shore antenna to Bude, Miss. can only be 15 W. Consequently, a directional antenna must be used
           whose minimum front-to-back ratio over this 45° sector must be at least 12.2 dB. (250 W forward
           power to 15 W rearward power is a power ratio of 16.6 or 12.2 dB).

     (f) To provide cochannel protection to television stations, no shore station will be allowed closer than 193 km
         miles) from the cochannel television station.

     (g) To provide adjacent channel protection to television stations, no shore or offshore station shall be allowed
         within 128 kilometers (80 miles) of the adjacent channel television station.

     (h) Mobile stations shall not operate closer to shore than 6.4 km (4 miles) beyond the three mile limit and
         shall not operate with an ERP in excess of 100 watts with 9.1 m (30 ft) maximum antenna height.

47 CFR 90.315(h) (enhanced display)                                                                       page 303 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                               47 CFR 90.315(i)
Private Land Mobile Radio Services

     (i)   Mobile stations installed in aircraft shall operate 11 km (7 miles) beyond the three mile limit and shall not
           operate with an ERP in excess of 1 watt or at heights in excess of 305 m (1000 feet) AMSL.

     (j)

           (1) The following frequency bands are available for assignment in all services for use in the Zones
               defined in paragraph (a) of this section.

                                                       Paired Frequencies (MHz)

                     Zone                     Transmit (or receive)                        Receive (or transmit)
                 A                                      490.01875–490.98125                          493.01875–493.98125
                 B                                      484.01875–484.98125                          487.01875–487.98125
                 C                                      478.01875–478.98125                          481.01875–481.98125

           (2) Only the first and last assignable frequencies are shown. Frequencies shall be assigned in pairs with
               3 MHz spacing between transmit and receive frequencies. Assignable frequency pairs will occur in
               increments of 6.25 kHz. The following frequencies will be assigned for a maximum authorized
               bandwidth of 6 kHz: 478.01875, 478.98125, 484.01875, 484.98125, 490.01875, 490.98125,
               481.01875, 481.98125, 487.01875, 487.98125, 493.01875, and 493.98125 MHz.

     (k) Fixed stations operating point-to-point shall be assigned frequencies beginning with 490.025/493.025
         MHz (Zone A), 484.025/487.025 MHz (Zone B) and 478.025–481.025 MHz (Zone C) and progressing
         upwards utilizing available frequencies toward the end of the band. Offshore base/mobile stations shall
         be assigned frequencies beginning at 490.975/493.975 MHz (Zone A), 484.975/478.975 MHz (Zone B)
         and 478.975/481.975 MHz (Zone C) and progressing downwards utilizing available frequencies toward
         the beginning of the band. All frequency assignments are subject to the conditions specified in § 90.173.

[50 FR 12027, Mar. 27, 1985; 50 FR 14389, Apr. 12, 1985, as amended at 58 FR 44959, Aug. 25, 1993; 60 FR 37277, July 19, 1995;
72 FR 35198, June 27, 2007]

§ 90.317 Fixed ancillary signaling and data transmissions.
     (a) Licensees of systems that have exclusive-use status in their respective geographic areas may engage in
         fixed ancillary signaling and data transmissions, subject to the following requirements:

           (1) All such ancillary operations must be on a secondary, non-interference basis to the primary mobile
               operation of any other licensee.

           (2) The output power at the remote site shall not exceed 30 watts.

           (3) Any fixed transmitters will not count toward meeting the mobile loading requirements nor be
               considered in whole or in part as a justification for authorizing additional frequencies in the
               licensee's mobile system.

           (4) Automatic means must be provided to deactivate the remote transmitter in the event the carrier
               remains on for a period in excess of three minutes.

           (5) Operational fixed stations authorized pursuant to the provisions of this paragraph are exempt from
               the requirements of §§ 90.425 and 90.429.

47 CFR 90.317(a)(5) (enhanced display)                                                                         page 304 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.317(a)(6)
Private Land Mobile Radio Services

           (6) If the system is licensed on 470–512 MHz conventional frequencies, and exclusivity has been
               achieved through the aggregate loading of more than a single co-channel licensee, then a licensee
               must obtain the concurrence of other co-channel licensees prior to commencing such ancillary
               operations.

     (b) Licensees of systems that do not have exclusive-use status in their respective geographic areas may
         conduct fixed ancillary signaling and data transmissions only in accordance with the provisions of §
         90.235 of this part.

[57 FR 34693, Aug. 6, 1992]

Subpart M—Intelligent Transportation Systems Radio Service

Source: 60 FR 15253, Mar. 23, 1995, unless otherwise noted.

§ 90.350 Scope.
The Intelligent Transportation Systems radio service is for the purpose of integrating radio-based technologies into
the nation's transportation infrastructure and to develop and implement the nation's intelligent transportation
systems. It includes the Location and Monitoring Service (LMS) and Dedicated Short Range Communications
Service (DSRCS). Rules as to eligibility for licensing, frequencies available, and any special requirements for
services in the Intelligent Transportation Systems radio service are set forth in this subpart.

[64 FR 66410, Nov. 26, 1999]

§ 90.351 Location and Monitoring Service.
These provisions authorize the licensing of systems in the Location and Monitoring Service (LMS). LMS systems
utilize non-voice radio techniques to determine the location and status of mobile radio units. LMS licensees
authorized to operate a system in the 902–928 MHz band may serve individuals, federal government agencies, and
entities eligible for licensing in this part 90.

     (a) Each application to license an LMS system shall include the following supplemental information:

           (1) A detailed description of the manner in which the system will operate, including a map or diagram.

           (2) The necessary or occupied bandwidth of emission, whichever is greater.

           (3) The data transmission characteristics as follows:

                 (i)   The vehicle location update rates;

                (ii) Specific transmitter modulation techniques used;

                (iii) For codes and timing scheme: A table of bit sequences and their alphanumeric or indicator
                      equivalents, and a statement of bit rise time, bit transmission rates, bit duration, and interval
                      between bits;

                (iv) A statement of amplitude-versus-time of the interrogation and reply formats, and an example of
                     a typical message transmission and any synchronizing pulses utilized.

           (4) A plan to show the implementation schedule during the initial license term.
47 CFR 90.351(a)(4) (enhanced display)                                                                      page 305 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.351(b)
Private Land Mobile Radio Services

     (b) LMS stations are exempted from the identification requirements of § 90.425; however, the Commission
         may impose automatic station identification requirements when determined to be necessary for
         monitoring and enforcement purposes.

§ 90.353 LMS operations in the 902–928 MHz band.
LMS systems may be authorized within the 902–928 MHz band, subject to the conditions in this section. LMS
licensees are required to maintain whatever records are necessary to demonstrate compliance with these
provisions and must make these records available to the Commission upon request:

     (a) LMS operations will not cause interference to and must tolerate interference from industrial, scientific, and
         medical (ISM) devices and radiolocation Government stations that operate in the 902–928 MHz band.

     (b) LMS systems are authorized to transmit status and instructional messages, either voice or non-voice, so
         long as they are related to the location or monitoring functions of the system.

     (c) LMS systems may utilize store and forward interconnection, where either transmissions from a vehicle or
         object being monitored are stored by the LMS provider for later transmission over the public switched
         network (PSN), or transmissions received by the LMS provider from the PSN are stored for later
         transmission to the vehicle or object being monitored. Real-time interconnection between vehicles or
         objects being monitored and the PSN will only be permitted to enable emergency communications related
         to a vehicle or a passenger in a vehicle. Such real-time, interconnected communications may only be sent
         to or received from a system dispatch point or entities eligible in the Public Safety or Special Emergency
         Radio Services. See subparts B and C of this part.

     (d) Multilateration LMS systems will be authorized on a primary basis within the bands 904–909.75 MHz and
         921.75–927.25 MHz. Additionally, multilateration and non-multilateration systems will share the
         919.75–921.75 MHz band on a co-equal basis. Licensing will be on the basis of Economic Areas (EAs) for
         multilateration systems, with one exclusive EA license being issued for each of these three sub-bands.
         Except as provided in paragraph (f) of this section, multilateration EA licensees may be authorized to
         operate on only one of the three multilateration bands within a given EA. Additionally, EA multilateration
         LMS licenses will be conditioned upon the licensee's ability to demonstrate through actual field tests that
         their systems do not cause unacceptable levels of interference to 47 CFR part 15 devices.

     (e) Multilateration EA-licensed systems and grandfathered automatic vehicle monitoring service (AVM)
         systems (see § 90.363) are authorized on a shared basis and must cooperate in the selection and use of
         frequencies in accordance with § 90.173(b).

     (f) Multilateration EA licensees may be authorized to operate on both the 919.75–921.75 MHz and
         921.75–927.75 MHz bands within a given EA (see § 90.209(b)(5)).

     (g) Multilateration LMS systems whose primary operations involve the provision of vehicle location services,
         may provide non-vehicular location services.

     (h) Non-multilateration stations are authorized to operate on a shared, non-exclusive basis in the 902–904
         MHz and 909.75–921.75 MHz sub-bands. Non-multilateration systems and multilateration systems will
         share the 919.75–921.75 MHz band on a co-equal basis. Non-multilateration LMS systems may not
         provide non-vehicular location services. The maximum antenna height above ground for non-
         multilateration LMS systems is 15 meters.

47 CFR 90.353(h) (enhanced display)                                                                    page 306 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.353(i)
Private Land Mobile Radio Services

     (i)   Non-multilateration LMS licenses will be issued on a site-by-site basis, except that municipalities or other
           governmental operatives may file jointly for a non-multilateration license covering a given U.S. Department
           of Commerce Bureau of Economic Analysis Economic Area (EA). Such an application must identify all
           planned sites. After receiving the license, the non-multilateration EA licensee must notify the Commission
           if sites are deleted or if new sites are added, before those sites may be put into operation.

[60 FR 15253, Mar. 23, 1995, as amended at 62 FR 52044, Oct. 6, 1997; 72 FR 35198, June 27, 2007; 75 FR 19284, Apr. 14, 2010]

§ 90.355 LMS operations below 512 MHz.
Applications requiring not more than 25 kHz bandwidth per frequency in the 25–50 MHz, 150–170 MHz, and
450–512 MHz bands may use either base-mobile frequencies currently assigned the applicant, or be assigned base-
mobile frequencies available in the service in which eligibility has been established, provided that:

     (a) For transmission between vehicles and base stations, each frequency in a single-frequency mode of
         operation will provide location data for approximately 200 vehicles, or both frequencies in a two-frequency
         mode of operation will provide location data for approximately 400 vehicles, except that for frequencies in
         the 450–512 MHz band that are assigned in pairs in accordance with the allocation plan for the band, the
         requirement is that location data be provided for approximately 200 vehicles for each frequency pair; and
         a showing is made that 50 percent of the vehicles will be in operation within the system by the end of the
         second year of the initial license term, and 70 percent will be in operation within the system by the end of
         the initial license term; except that if these vehicle loading standards will not be met, frequencies will be
         assigned only on a secondary non-interference basis to any authorized radiotelephony operation.

     (b) The minimum separation between a proposed LMS station and the nearest co-channel base station of
         another licensee operating a voice system is 75 miles (120 km) for a single frequency mode of operation
         or 35 miles (56 km) for a two-frequency mode of operation. Where the minimum mileage separation
         cannot be achieved, agreement to the use of F1D, F2D, G1D, G2D or P0N emission must be received from
         all existing co-channel licensees using voice emissions within the applicable mileage limits. If there is
         interference with voice operations and required agreement was not received, or operation was authorized
         on a secondary non-interference basis, the licensee of the LMS system is responsible for eliminating the
         interference.

     (c) Frequencies additional to any assigned under paragraph (a) of this section will not be assigned to the
         same licensee at any stations located within 64 km (40 miles) of any station in which the licensee holds
         an interest until each of such licensee's frequencies for LMS operation is shown to accommodate not less
         than 90 percent of the frequency loading requirements specified in paragraph (a) of this section.

§ 90.357 Frequencies for LMS systems in the 902–928 MHz band.
     (a) Multilateration LMS systems will be authorized on the following LMS sub-bands:

                               LMS sub-band                                           Forward link1
            904.000–909.750 MHz                                    927.750–928.000 MHz.
            919.750–921.750   MHz.2                                927.500–927.750 MHz.
            921.750–927.250 MHz                                    927.250–927.500 MHz.

           1Forward links for LMS systems may also be contained within the LMS sub-band. However, the
           maximum allowable power in these sub-bands is 30 Watts ERP in accordance with § 90.205(l).

47 CFR 90.357(a) (enhanced display)                                                                            page 307 of 516
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                                                                                                        47 CFR 90.357(b)
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           2The frequency band 919.750–921.750 MHz is shared co-equally between multilateration and non-
           multilateration LMS systems.

     (b) Non-multilateriation LMS systems will be authorized in the following frequency bands:

                                                LMS Sub-band1
 902.000–904.000 MHz
 909.750–921.750 MHz

1Applicants for non-multilateration LMS systems should request only the minimum amount of
bandwidth necessary to meet their operational needs.

[72 FR 35198, June 27, 2007, as amended at 75 FR 19284, Apr. 14, 2010]

§ 90.359 Field strength limits for EA-licensed LMS systems.
EA-licensed multilateration systems shall limit the field strength of signals transmitted from their base stations to
47 dBuV/m at their EA boundary.

[62 FR 52044, Oct. 6, 1997]

§ 90.361 Interference from part 15 and Amateur operations.
Operations authorized under parts 15 and 97 of this chapter may not cause harmful interference to LMS systems in
the 902–928 MHz band. These operations will not be considered to be causing harmful interference to a
multilateration LMS system operating in one of the three EA sub-bands (see § 90.357(a)) if they are non-video links
operating in accordance with the provisions of parts 15 or 97 of this chapter and at least one of the following
conditions are met:

     (a) It is a field disturbance sensor operating under § 15.245 of this chapter and it is not operating in the
         904–909.750 or 919.750–928.000 MHz sub-bands; or

     (b) It does not employ an outdoor antenna; or

     (c) If it does employ an outdoor antenna, then if:

           (1) The directional gain of the antenna does not exceed 6 dBi, or if the directional gain of the antenna
               exceeds 6 dBi, it reduces its transmitter output power below 1 watt by the proportional amount that
               the directional gain of the antenna exceeds 6 dBi; and

           (2) Either:

                 (i)   The antenna is 5 meters or less in height above ground; or

                 (ii) The antenna is more than 5 meters in height above ground but less than or equal to 15 meters
                      in height above ground and either:

                       (A) Adjusts its transmitter output power below 1 watt by 20 log (h/5) dB, where h is the height
                           above ground of the antenna in meters; or

47 CFR 90.361(c)(2)(ii)(A) (enhanced display)                                                            page 308 of 516
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                                                                                                   47 CFR 90.361(c)(2)(ii)(B)
Private Land Mobile Radio Services

                        (B) Is providing the final link for communications of entities eligible under subpart B or C of
                            this part, or is providing the final link for communications of health care providers that
                            serve rural areas, elementary schools, secondary schools or libraries.

[60 FR 15253, Mar. 23, 1995, as amended at 62 FR 52044, Oct. 6, 1997]

§ 90.363 Grandfathering provisions for existing AVM licensees.
     (a) These provisions authorize grandfathered operation by automatic vehicle monitoring (AVM) systems
         licensed on or before February 3, 1995. To attain grandfathered status for their stations, existing
         multilateration AVM licensees must file, on or before May 22, 1995, applications to modify their station
         licenses to comply with the band plan shown in § 90.357(a). These applications to modify must identify
         the multilateration sub-band or sub-bands in which the applicants intend to operate their LMS system
         stations, once their applications to modify have been authorized. The application to modify a license to
         comply with the band plan shown in § 90.357(a) may also include a modification to specify an alternate
         site, so long as the alternate site is 2 kilometers or less from the site specified in the original license.

     (b) When existing multilateration AVM licensees file applications to modify, as specified in paragraph (a) of
         this section, they must certify that either:

           (1) The stations that compose their AVM system were constructed and placed in operation in
               accordance with § 90.155(e) on or before February 3, 1995; or

           (2) The stations were not constructed and placed in operation in accordance with § 90.155(e) on or
               before February 3, 1995.

     (c) Multilateration AVM systems that were constructed and placed in operation on or before February 3, 1995
         will be given until April 1, 1998 to convert to the spectrum identified in their LMS system license. Such
         licensees may continue to operate their systems during this period. Licensees of multilateration AVM
         constructed and operational systems that do not file applications to modify on or before May 22, 1995,
         will be permitted to continue operations under the provisions of former § 90.239 until April 1, 1998 or the
         end of their original license term, whichever occurs first, at which time such licenses will cancel
         automatically and will not be renewed.

     (d) Multilateration AVM licensees for stations that were not constructed and placed in operation on or before
         February 3, 1995 must construct their LMS systems and place them in operation on the spectrum
         identified in their LMS system license on or before September 1, 1996, or their licenses will cancel
         automatically (see Section 90.155 (e)). Also, these licenses will cancel automatically on July 1, 1996
         unless timely modification applications are filed on or before this date (see paragraph (a) of this section).

     (e) Non-multilateration systems licensed in spectrum other than the 902.00–904.00 and 909.75–921.75 MHz
         bands must modify their licenses by April 1, 1998 to specify operation solely in the bands provided in §
         90.357(b) for non-multilateration systems and to operate their systems consistently with the provisions of
         § 90.353.

[60 FR 15253, Mar. 23, 1995, as amended at 61 FR 18986, Apr. 30, 1996]

§ 90.365 Partitioned licenses and disaggregated spectrum.
     (a) Eligibility.

47 CFR 90.365(a) (enhanced display)                                                                         page 309 of 516
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                                                                                                     47 CFR 90.365(a)(1)
Private Land Mobile Radio Services

           (1) Party seeking approval for partitioning and disaggregation shall request an authorization pursuant to
               § 1.948 of this chapter.

           (2) Multilateration LMS licensees may apply to partition their licensed geographic service area or
               disaggregate their licensed spectrum at any time following the grant of their licenses. Multilateration
               LMS licensees may partition or disaggregate to any party that is also eligible to be a multilateration
               LMS licensee. Partitioning is permitted along any service area defined by the parties, and spectrum
               may be disaggregated in any amount. The Commission will also consider requests for partial
               assignment of licenses that propose combinations of partitioning and disaggregation.

     (b) Partitioning. In the case of partitioning, applicants and licensees must file FCC Form 603 pursuant to §
         1.948 and list the partitioned service area on a schedule to the application. The geographic coordinates
         must be specified in degrees, minutes, and seconds to the nearest second of latitude and longitude and
         must be based upon the 1983 North American Datum (NAD83).

     (c) License term. The license term for a partitioned license area, and for disaggregated spectrum shall be the
         remainder of the original licensee's license term.

[63 FR 40663, July 30, 1998, as amended at 63 FR 68966, Dec. 14, 1998; 82 FR 41548, Sept. 1, 2017]

  REGULATIONS GOVERNING THE LICENSING AND USE OF FREQUENCIES IN THE 5895–5925 MHZ BAND FOR
                  DEDICATED SHORT-RANGE COMMUNICATIONS SERVICE (DSRCS)

§ 90.370 Permitted frequencies.
     (a) Dedicated Short-Range Communications Service (DSRCS) systems are permitted to operate in the
         5895–5925 MHz band.

     (b) DSRCS authorizations granted prior to the July 2, 2021 may remain on existing frequencies in the
         5850–5895 MHz band until July 5, 2022, at which time they may only operate in the 5895–5925 MHz
         band.

     (c) Frequencies in the 5895–5925 MHz band will not be assigned for the exclusive use of any licensee;
         Channels are available on a shared basis only for use in accordance with the Commission's rules. All
         licensees shall cooperate in the selection and use of channels in order to reduce interference. This
         includes monitoring for communications in progress and any other measures as may be necessary to
         minimize interference.

     (d) Licensees of Roadside Units (RSUs) suffering or causing harmful interference within a communications
         zone, as defined in § 90.375 of this part, are expected to cooperate and resolve this problem by mutually
         satisfactory arrangements. If the licensees are unable to do so, the Commission may impose restrictions
         including specifying the transmitter power, antenna height and direction, additional filtering, or area or
         hours of operation of the stations concerned. The use of any channel at a given geographical location
         may be denied when, in the judgment of the Commission, its use at that location is not in the public
         interest; use of any such channel may be restricted as to specified geographical areas, maximum power,
         or such other operating conditions, contained in this part or in the station authorization.

[86 FR 23297, May 3, 2021]

47 CFR 90.370(d) (enhanced display)                                                                     page 310 of 516
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                                                                                                         47 CFR 90.371
Private Land Mobile Radio Services

§ 90.371 Dedicated short range communications service.
     (a) These provisions pertain to systems in the 5850–5925 MHz band for Dedicated Short-Range
         Communications Service (DSRCS). DSRCS systems use radio techniques to transfer data over short
         distances between roadside and mobile units, between mobile units, and between portable and mobile
         units to perform operations related to the improvement of traffic flow, traffic safety, and other intelligent
         transportation service applications in a variety of environments. DSRCS systems may also transmit status
         and instructional messages related to the units involved. DSRCS Roadside Units are authorized under this
         part. DSRCS On-Board Units are authorized under part 95 of this chapter.

     (b) DSRCS Roadside Units (RSUs) operating in the band 5850–5925 MHz shall not receive protection from
         Government Radiolocation services in operation prior to the establishment of the DSRCS station.
         Operation of DSRCS RSU stations within the radius centered on the locations listed in the table below
         must be coordinated through the National Telecommunications and Information Administration.

                                 Table 1 to § 90.371(b)—Coordination Locations

                                Location                 Latitude     Longitude      Coordination zone radius
           Anclote, Florida                              28–11–18      82–47–40                             45
           Cape Canaveral, Florida                       28–28–54      80–34–35                             47
           Cape San Blas, Florida                        29–40–31      85–20–48                             47
           Carabelle Field, Florida                      29–50–38      84–39–46                             36
           Charleston, South Carolina                    32–51–48      79–57–48                             16
           Edwards, California                           34–56–43     117–54–50                             53
           Eglin, Florida                                30–37–51      86–24–16                            103
           Fort Walton Beach, Florida                    30–24–53      86–39–58                             41
           Kennedy Space Center, Florida                 28–25–29      80–39–51                             47
           Key West, Florida                             24–33–09      81–48–28                             12
           Kirtland AFB, New Mexico                      34–59–51     106–28–54                             15
           Kokeepark, Hawaii                             22–07–35     159–40–06                                 5
           MacDill, Florida                              27–50–37      82–30–04                             47
           NV Test Training Range, Nevada                37–18–27     116–10–24                            186
           Patuxent River, Maryland                      38–16–55      76–25–12                                 6
           Pearl Harbor, Hawaii                          21–21–17     157–57–51                             16
           Pillar Point, California                      37–29–52     122–29–59                             36
           Poker Flat, Alaska                            65–07–36     147–29–21                             13
           Port Canaveral, Florida                       28–24–42      80–36–17                             19
           Port Hueneme, California                      34–08–60     119–12–24                             24
           Point Mugu, California                        34–07–17      119–09–1                             18
           Saddlebunch Keys, Florida                     24–38–51      81–36–22                             29
           San Diego, California                         32–43–00     117–11–00                             11
           San Nicolas Island, California                33–14–47     119–31–07                            195
           Tonopah Test Range, Nevada                    37–44–00     116–43–00                                 2
           Vandenberg, California                        34–34–58     120–33–42                             55

47 CFR 90.371(b) (enhanced display)                                                                     page 311 of 516
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                                                                                                           47 CFR 90.371(c)
Private Land Mobile Radio Services

                              Location                       Latitude     Longitude       Coordination zone radius
           Venice, Florida                                  27–04–37        82–27–03                             50
           Wallops Island, Virginia                         37–51–23        75–30–41                             48
           White Sands Missile Range, New Mexico            32–58–26       106–23–43                            158
           Yuma, Arizona                                    32–54–03       114–23–10                                 2

     (c) NTIA may authorize additional station assignments in the federal radiolocation service and may amend,
         modify, or revoke existing or additional assignments for such service. Once a federal assignment action is
         taken, the Commission's Universal Licensing System database will be updated accordingly and the list in
         paragraph (b) of this section will be updated as soon as practicable.

[64 FR 66410, Nov. 26, 1999, as amended at 69 FR 46443, Aug. 3, 2004; 86 FR 23297, May 3, 2021]

§ 90.372 DSRCS notification requirement.
     (a) DSRCS licensees authorized pursuant to 90.370(b) must notify the Commission that as of the transition
         deadline of July 5, 2022, they have ceased operating in the 5.850–5.895 GHz portion of the band. This
         notification must be filed via ULS within 15 days of the expiration of the transition deadline.

     (b) Continued operation in the 5.850–5.895 GHz portion of the band after the transition deadline, will result in
         automatic termination of that licensee's authorization without specific Commission action.

[86 FR 23297, May 3, 2021]

§ 90.373 Eligibility in the DSRCS.
The following entities are eligible to hold an authorization to operate Roadside units in the DSRCS:

     (a) Any territory, possession, state, city, county, town or similar governmental entity.

     (b) Any entity meeting the eligibility requirements of §§ 90.33 or 90.35.

[69 FR 46443, Aug. 3, 2004]

§ 90.375 RSU license areas, communication zones and registrations
     (a) Roadside Units (RSUs) in the 5895–5925 MHz band are licensed on the basis of non-exclusive geographic
         areas. Governmental applicants will be issued a geographic area license based on the geo-political area
         encompassing the legal jurisdiction of the entity. All other applicants will be issued a geographic area
         license for their proposed area of operation based on county(s), state(s) or nationwide.

     (b) Applicants who are approved in accordance with FCC Form 601 will be granted non-exclusive licenses for
         all non-reserved DSRCS frequencies (see § 90.377). Such licenses serve as a prerequisite of registering
         individual RSUs located within the licensed geographic area described in paragraph (a) of this section.
         Licensees must register each RSU in the Universal Licensing System (ULS) before operating such RSU.
         RSU registrations are subject, inter alia, to the requirements of § 1.923 of this chapter as applicable
         (antenna structure registration, environmental concerns, international coordination, and quiet zones).
         Additionally, RSUs at locations subject to NTIA coordination (see § 90.371(b)) may not begin operation

47 CFR 90.375(b) (enhanced display)                                                                          page 312 of 516
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                                                                                                              47 CFR 90.375(c)
Private Land Mobile Radio Services

            until NTIA approval is received. Registrations are not effective until the Commission posts them on the
            ULS. It is the DSRCS licensee's responsibility to delete from the registration database any RSUs that have
            been discontinued.

       (c) Licensees must operate each RSU in accordance with the Commission's rules and the registration data
           posted on the ULS for such RSU. Licensees must register each RSU for the smallest communication zone
           needed for the intelligent transportation systems application using one of the following four
           communication zones:

                     Table 1 to § 90.375(c)—Communication Zones

                               Maximum output power                         Communications zone
       RSU class
                                     (dBm)1                                     (meters)
 A                                                             0                                         15
 B                                                            10                                       100
 C                                                            20                                       400
 D                                                          28.8                                      1000

1   As described in the IEEE 802.11p-2010 (incorporated by reference, see § 90.395).

[69 FR 46444, Aug. 3, 2004, as amended at 82 FR 41548, Sept. 1, 2017; 85 FR 64410, Oct. 13, 2020; 86 FR 23298, May 3, 2021]

§ 90.377 Frequencies available; maximum EIRP and antenna height, and priority
communications.
       (a) Licensees shall transmit only the power (EIRP) needed to communicate with an On-Board Unit (OBU)
           within the communications zone and must take steps to limit the Roadside Unit (RSU) signal within the
           zone to the maximum extent practicable.

47 CFR 90.377(a) (enhanced display)                                                                            page 313 of 516
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                                                                                                            47 CFR 90.377(b)
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     (b) Frequencies available for assignment to eligible applicants within the 5850–5925 MHz band for RSUs and
         the maximum EIRP permitted for an RSU with an antenna height not exceeding 8 meters above the
         roadway bed surface are specified in the table below. Where two EIRP limits are given, the higher limit is
         permitted only for state or local governmental entities.

                                          Frequency range            Max. EIRP1
                  Channel No.                                                                 Channel use
                                               (MHz)                  (dBm)
           170                                      5850–5855                         Reserved.
           172                                      5855–5865                     33 Service Channel.2
           174                                      5865–5875                     33 Service Channel.
           175                                      5865–5885                     23 Service Channel.3
           176                                      5875–5885                     33 Service Channel.
           178                                      5885–5895                33/44.8 Control Channel.
           180                                      5895–5905                     23 Service Channel.
           181                                      5895–5915                     23 Service Channel.3
           182                                      5905–5915                     23 Service Channel.
           184                                      5915–5925                 33/40 Service Channel.4

           1 An RSU may employ an antenna with a height exceeding 8 meters but not exceeding 15 meters
           provided the EIRP specified in the table above is reduced by a factor of 20 log(Ht/8) in dB where Ht
           is the height of the radiation center of the antenna in meters above the roadway bed surface. The
           EIRP is measured as the maximum EIRP toward the horizon or horizontal, whichever is greater, of
           the gain associated with the main or center of the transmission beam. The RSU antenna height
           shall not exceed 15 meters above the roadway bed surface.

           2   Channel 172 is designated for public safety applications involving safety of life and property.

           3Channel Nos. 174/176 may be combined to create a twenty megahertz channel, designated
           Channel No. 175. Channels 180/182 may be combined to create a twenty-megahertz channel,
           designated Channel No. 181.

           4 Channel 184 is designated for public safety applications involving safety of life and property. Only
           those entities meeting the requirements of § 90.373(a) are eligible to hold an authorization to
           operate on this channel.

     (c) Except as provided in paragraphs (d) and (e) of this section, non-reserve DSRCS channels are available on
         a shared basis only for use in accordance with the Commission's rules. All licensees shall cooperate in
         the selection and use of channels in order to reduce interference. This includes monitoring for
         communications in progress and any other measures as may be necessary to minimize interference.
         Licensees of RSUs suffering or causing harmful interference within a communications zone are expected
         to cooperate and resolve this problem by mutually satisfactory arrangements. If the licensees are unable
         to do so, the Commission may impose restrictions including specifying the transmitter power, antenna
         height and direction, additional filtering, or area or hours of operation of the stations concerned. Further
         the use of any channel at a given geographical location may be denied when, in the judgment of the

47 CFR 90.377(c) (enhanced display)                                                                          page 314 of 516
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                                                                                                       47 CFR 90.377(d)
Private Land Mobile Radio Services

           Commission, its use at that location is not in the public interest; use of any such channel may be
           restricted as to specified geographical areas, maximum power, or such other operating conditions,
           contained in this part or in the station authorization.

     (d) Safety/public safety priority. The following access priority governs all DSRCS operations:

           (1) Communications involving the safety of life have access priority over all other DSRCS
               communications;

           (2) Subject to a control channel priority system management strategy (see ASTM E2213–03 DSRC
               Standard at § 4.1.1.2(4)), DSRCS communications involving public safety have access priority over
               all other DSRC communications not listed in paragraph (d)(1) of this section. Roadside Units (RSUs)
               operated by state or local governmental entities are presumptively engaged in public safety priority
               communications.

     (e) Non-priority communications. DSRCS communications not listed in paragraph (d) of this section, are non-
         priority communications. If a dispute arises concerning non-priority communications, the licensee of the
         later-registered RSU must accommodate the operation of the early registered RSU, i.e., interference
         protection rights are date-sensitive, based on the date that the RSU is first registered (see § 90.375) and
         the later-registered RSU must modify its operations to resolve the dispute in accordance with paragraph
         (f) of this section.

     (f) Except as otherwise provided in the ASTM–DSRC Standard (see § 90.379) for the purposes of paragraph
         (e) of this section, objectionable interference will be considered to exist when the Commission receives a
         complaint and the difference in signal strength between the earlier-registered RSU and the later-registered
         RSU (anywhere within the earlier-registered RSU's communication zone) is 18 dB or less (co-channel).
         Later-registered RSUs causing objectionable interference must correct the interference immediately
         unless written consent is obtained from the licensee of the earlier-registered RSU.

[71 FR 52749, Sept. 7, 2006, as amended at 72 FR 35199, June 27, 2007]

§ 90.379 Technical standards for Roadside Units.
DSRCS Roadside Units (RSUs) operating in the 5895–5925 MHz band must comply with the technical standard
Institute of Electrical and Electronics Engineers (IEEE) 802.11p–2010 (incorporated by reference, see § 90.395).

[86 FR 23298, May 3, 2021]

§ 90.383 RSU sites near the U.S./Canada or U.S./Mexico border.
Until such time as agreements between the United States and Canada or the United States and Mexico, as
applicable, become effective governing border area use of the 5895–5925 MHz band, authorizations to operate
Roadside Units (RSUs) are granted subject to the following conditions:

     (a) RSUs must not cause harmful interference to stations in Canada or Mexico that are licensed in
         accordance with the international table of frequency allocations for Region 2 (see § 2.106 of this chapter)
         and must accept any interference that may be caused by such stations.

     (b) Authority to operate RSUs is subject to modifications and future agreements between the United States
         and Canada or the United States and Mexico, as applicable.

47 CFR 90.383(b) (enhanced display)                                                                     page 315 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.395
Private Land Mobile Radio Services

[69 FR 46445, Aug. 3, 2004, as amended at 86 FR 23298, May 3, 2021]

§ 90.395 Incorporation by reference.
Certain material required in this section is incorporated by reference into this subpart with the approval of the
Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. All approved material is available for
inspection at the address of the FCC's main office indicated in 47 CFR 0.401(a) and is available from the sources
indicated in this section. It is also available for inspection at the National Archives and Records Administration
(NARA). For information on the availability of this material at NARA, email fedreg.legal@nara.gov or go to
www.archives.gov/federal-register/cfr/ibrlocations.html.

     (a) Institute of Electrical and Electronics Engineers (IEEE), 3025 Boardwalk Drive, Suite 220, Ann Arbor, MI
         48108, 1–855–999–9870, www.techstreet.com/ieee.

           (1) IEEE 802.11p-2010, IEEE Standard for Information technology—Telecommunications and information
               exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11:
               Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment
               6: Wireless Access in Vehicular Environments, 15 July, 2010; into §§ 90.375(c), 90.379.

           (2) [Reserved]

     (b) [Reserved]

[86 FR 23299, May 3, 2021]

Subpart N—Operating Requirements
§ 90.401 Scope.
The subpart prescribes general operating requirements for stations licensed under this part. This includes station
operating procedures, points of communication, permissible communications, methods of station identification,
control requirements, and station record keeping requirements.

§ 90.403 General operating requirements.
     (a) Licensees of radio stations in the private land mobile radio services shall be directly responsible for the
         proper operation and use of each transmitter for which they are licensed. In this connection, licensees
         shall exercise such direction and control as is necessary to assure that all authorized facilities are
         employed:

           (1) Only for permissible purposes;

           (2) Only in a permissible manner; and

           (3) Only by persons with authority to use and operate such equipment.

     (b) In carrying out their responsibilities under § 90.403(a), licensees shall be bound by the provisions of the
         Communications Act of 1934, as amended, and by the rules and regulations of the Commission governing
         the radio service in which their facilities are licensed; and licensees may not, through written or oral
         agreements or otherwise, relieve themselves of any duty or obligation imposed upon them, by law, as
         licensees.

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                                                                                                       47 CFR 90.403(c)
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     (c) Except for stations that have been granted exclusive channels under this part and that are classified as
         commercial mobile radio service providers pursuant to part 20 of this chapter, each licensee must restrict
         all transmissions to the minimum practical transmission time and must employ an efficient operating
         procedure designed to maximize the utilization of the spectrum.

     (d) Communications involving the imminent safety-of-life or property are to be afforded priority by all
         licensees.

     (e) Licensees shall take reasonable precautions to avoid causing harmful interference. This includes
         monitoring the transmitting frequency for communications in progress and such other measures as may
         be necessary to minimize the potential for causing interference.

     (f) Stations licensed in this part shall not continuously radiate an unmodulated carrier except where required
         for tests as permitted in § 90.405, except where specifically permitted by this part, where specifically
         authorized in the station authorization, or on an as needed basis in the Radiolocation Radio Service.

     (g) The radiations of the transmitter shall be suspended immediately upon detection or notification of a
         deviation from the technical requirements of the station authorization and until such deviation is
         corrected. For transmissions concerning the imminent safety-of-life or property, the transmissions shall
         be suspended as soon as the emergency is terminated.

[43 FR 54791, Nov. 22, 1978; 44 FR 32220, June 5, 1979, as amended at 59 FR 59965, Nov. 21, 1994]

§ 90.405 Permissible communications.
     (a) Stations licensed under this part may transmit only the following types of communication:

           (1) Any communication related directly to the imminent safety-of-life or property;

           (2) Communications directly related and necessary to those activities which make the licensee eligible
               for the station license held under this part. In addition, when communication service is provided
               under the cooperative sharing provisions of § 90.179, the licensee providing such service may
               transmit communications related to the activities for which the parties receiving the service would
               be eligible to be licensed.

           (3) Communications for testing purposes required for proper station and system maintenance. However,
               each licensee shall keep such tests to a minimum and shall employ every measure to avoid harmful
               interference.

     (b) The provisions contained in paragraph (a) of this section do not apply where a single base station licensee
         has been authorized to use a channel above 470 MHz on an exclusive basis, or to stations licensed under
         this part that are classified as CMRS providers under part 20 of this chapter.

[50 FR 6182, Feb. 14, 1985, as amended at 59 FR 59965, Nov. 21, 1994]

§ 90.407 Emergency communications.
The licensee of any station authorized under this part may, during a period of emergency in which the normal
communication facilities are disrupted as a result of hurricane, flood, earthquake or similar disaster, utilize such
station for emergency communications in a manner other than that specified in the station authorization or in the
rules and regulations governing the operation of such stations. The Commission may at any time order the
discontinuance of such special use of the authorized facilities.

47 CFR 90.407 (enhanced display)                                                                         page 317 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.411
Private Land Mobile Radio Services

[49 FR 36376, Sept. 17, 1984]

§ 90.411 Civil defense communications.
The licensee of any station authorized under this part may, on a voluntary basis, transmit communications
necessary for the implementation of civil defense activities assigned such station by local civil defense authorities
during an actual or simulated emergency, including drills and tests. The Commission may at any time order the
discontinuance of such special use of the authorized facilities.

[49 FR 36376, Sept. 17, 1984]

§ 90.415 Prohibited uses.
Stations licensed under this part shall not:

     (a) Transmit program material of any kind for use in connection with broadcasting; or

     (b) Render a communications common carrier service, except for stations in the Public Safety Pool providing
         communications standby facilities under § 90.20(a)(2)(xi) and stations licensed under this part in the
         SMR, private carrier paging, Industrial/Business Pool, or 220–222 MHz services.

[43 FR 54791, Nov. 22, 1978, as amended at 59 FR 59965, Nov. 21, 1994; 62 FR 18933, Apr. 17, 1997]

§ 90.417 Interstation communication.
     (a) Any station licensed under this part may communicate with any other station without restriction as to
         type, service, or licensee when the communications involved relate directly to the imminent safety-of-life
         or property.

     (b) Any station licensed under this part may communicate with any other station licensed under this part, with
         U.S. Government stations, and with foreign stations, in connection with mutual activities, provided that
         where the communication involves foreign stations prior approval of the Commission must be obtained,
         and such communication must be permitted by the government that authorizes the foreign station.
         Communications by Public Safety Pool eligibles with foreign stations will be approved only to be
         conducted in accordance with Article 5 of the Inter-American Radio Agreement, Washington, DC, 1949, the
         provisions of which are set forth in § 90.20(b).

[43 FR 54791, Nov. 22, 1978, as amended at 62 FR 18933, Apr. 17, 1997]

§ 90.419 Points of communication.
Normally, operations licensed under this part are intended to provide intrastation mobile communications. For
example, a base station is intended to communicate with its associated mobile stations and mobile stations are
intended to communicate between associated mobile stations and associated base stations of the licensee.
Accordingly, operations between base stations at fixed locations are permitted only in the following situations:

     (a) Base stations licensed under subpart T of this part and those in the Public Safety Pool that operate on
         frequencies below 450 MHz, may communicate on a secondary basis with other base stations,
         operational fixed stations, or fixed receivers authorized in these services or pools.

47 CFR 90.419(a) (enhanced display)                                                                     page 318 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.419(b)
Private Land Mobile Radio Services

     (b) Base stations licensed on any frequency in the Industrial/Business Pool and on base stations frequencies
         above 450 MHz in the Public Safety Pool may communicate on a secondary basis with other base
         stations, operational fixed stations, or fixed receivers authorized in these pools only when:

           (1) The messages to be transmitted are of immediate importance to mobile stations; or

           (2) Wireline communications facilities between such points are inoperative, economically impracticable,
               or unavailable from communications common carrier sources. Temporary unavailability due to a
               busy wireline circuit is not considered to be within the provisions of this paragraph.

     (c) Operational fixed stations may communicate with units of associated mobile stations only on a secondary
         basis.

     (d) Operational fixed stations licensed in the Industrial/Business Pool may communicate on a secondary
         basis with associated base stations licensed in these services when:

           (1) The messages to be transmitted are of immediate importance to mobile stations; or

           (2) Wireline communications facilities between such points are inoperative, economically impracticable,
               or unavailable from communications common carrier sources. Temporary unavailability due to a
               busy wireline circuit is not considered to be within the provisions of this paragraph.

     (e) Travelers' Information Stations are authorized to transmit certain information to members of the traveling
         public (see § 90.242).

     (f) CMRS licensees in the SMR categories of part 90, subpart S, CMRS providers authorized in the 220 MHz
         service of part 90, subpart T, CMRS paging operations as defined by part 90, subpart P and for-profit
         interconnected business radio services with eligibility defined by § 90.35 are permitted to utilize their
         assigned spectrum for fixed services on a co-primary basis with their mobile operations.

[61 FR 45356, Aug. 29, 1996, as amended at 62 FR 18933, Apr. 17, 1997; 72 FR 35199, June 27, 2007]

§ 90.421 Operation of mobile station units not under the control of the licensee.
Mobile stations, as defined in § 90.7, include vehicular-mounted and hand-held units. Such units may be operated by
persons other than the licensee, as provided for below, when necessary for the licensee to meet its requirements in
connection with the activities for which it is licensed. If the number of such units, together with units operated by
the licensee, exceeds the number of mobile units authorized to the licensee, license modification is required. The
licensee is responsible for taking necessary precautions to prevent unauthorized operation of such units not under
its control.

     (a) Public Safety Pool.

           (1) Mobile units licensed in the Public Safety Pool may be installed in any vehicle which in an emergency
               would require cooperation and coordination with the licensee, and in any vehicle used in the
               performance, under contract, of official activities of the licensee. This provision does not permit the
               installation of radio units in non-emergency vehicles that are not performing governmental functions
               under contract but with which the licensee might wish to communicate.

           (2) Mobile units licensed under § 90.20(a)(2)(iii) may be installed in a vehicle or be hand-carried for use
               by any person with whom cooperation or coordinations is required for medical services activities.

47 CFR 90.421(a)(2) (enhanced display)                                                                   page 319 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.421(a)(3)
Private Land Mobile Radio Services

           (3) On the Interoperability Channels in the 700 MHz Public Safety Band (See § 90.531(b)(1)), hand-held
               and vehicular transmitters may be operated by any licensee holding a license in the 700 MHz Public
               Safety Band or by any licensee holding a license for any other public safety frequency pursuant to
               part 90 of the Commission's rules. Therefore, individual licenses are not required for hand-held and
               vehicular transmitters in the 700 MHz Band.

     (b) Industrial/Business Pool. Mobile units licensed in the Industrial/Business Pool may be installed in vehicles
         of persons furnishing under contract to the licensee and for the duration of the contract, a facility or
         service directly related to the activities of the licensee.

     (c) In addition to the requirements in paragraphs (a) and (b) of this section, frequencies assigned to licensees
         in the Private Land Mobile Radio Services may be installed in the facilities of those who assist the
         licensee in emergencies and with whom the licensee must communicate in situations involving imminent
         safety to life or property.

[65 FR 60877, Oct. 13, 2000, as amended at 66 FR 10635, Feb. 16, 2001]

§ 90.423 Operation on board aircraft.
     (a) Except as provided in paragraphs (b), (c), and (d) of this section, and except as may be provided in other
         sections of this part with respect to operation on specific frequencies, mobile stations first authorized
         after September 14, 1973, under this part may be operated aboard aircraft for air-to-mobile, air-to-base,
         air-to-air and air-to-ship communications subject to the following:

           (1) Operations are limited to aircraft that are regularly flown at altitudes below 1.6 km (1 mi) above the
               earth's surface;

           (2) Transmitters are to operate with an output power not to exceed ten watts;

           (3) Operations are secondary to land-based systems;

           (4) Such other conditions, including additional reductions of altitude and power limitations, as may be
               required to minimize the interference potential to land-based systems.

     (b) Exceptions to the altitude and power limitations set forth in paragraph (a) of this section may be
         authorized upon a showing of unusual operational requirements which justify departure from those
         standards, provided that the interference potential to regular land-based operations would not be
         increased.

     (c) Mobile operations aboard aircraft in the services governed by this part, under licenses in effect September
         14, 1973, may be continued without regard to provisions of paragraph (a) of this section, as follows:

           (1) Operations may be continued only for the balance of the term of such licenses if aircraft involved are
               regularly flown at altitudes greater than 1.6 km (1 mi) above the earth's surface.

           (2) Operations may be continued for one additional renewal license term if the aircraft involved are
               regularly flown at altitudes below 1.6 km (1 mi) above the earth's surface.

     (d) Operation of radiolocation mobile stations may be authorized without regard to limitations and conditions
         set forth in paragraphs (a), (b), and (c) of this section.

[43 FR 54791, Nov. 22, 1978, as amended at 58 FR 44960, Aug. 25, 1993]

47 CFR 90.423(d) (enhanced display)                                                                      page 320 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.425
Private Land Mobile Radio Services

§ 90.425 Station identification.
Stations licensed under this part shall transmit identification in accordance with the following provisions:

     (a) Identification procedure. Except as provided for in paragraphs (d) and (e) of this section, each station or
         system shall be identified by the transmission of the assigned call sign during each transmission or
         exchange of transmissions, or once each 15 minutes (30 minutes in the Public Safety Pool) during
         periods of continuous operation. The call sign shall be transmitted by voice in the English language or by
         International Morse Code in accordance with paragraph (b) of this section. If the station is employing
         either analog or digital voice scrambling, or non-voice emission, transmission of the required identification
         shall be in the unscrambled mode using A3E, F3E or G3E emission, or International Morse, with all
         encoding disabled. Permissible alternative identification procedures are as follows:

           (1) A mobile relay stations call sign may be used to identify the associated control and mobile stations,
               except in the Public Safety Pool where the stations operate on frequencies below 450 MHz.
               Alternatively, a base station (including a mobile relay station) which is controlled by radio may be
               identified by the transmission of the call sign of the station at which communications originate.

           (2) One or more fixed relay stations may be identified by the transmission of the call signs of the
               stations at which the communications originate.

           (3) When a mobile station transmits on a different frequency than its associated base station, the
               assigned call sign of either the mobile station or the base station may be transmitted. Further, a
               single mobile unit in the licensee's authorized geographic area of operation may transmit station
               identification on behalf of any other operating mobile units in the fleet.

           (4) Use of an identifier other than the assigned call sign.

                 (i)   In the Public Safety Pool, mobile units licensed to a governmental entity and which operate on
                       frequencies above 30 MHz may use an identifier which contains, at a minimum, the name of the
                       licensee if the licensee maintains at the station a list of the special identifiers to be used by the
                       mobile units.

                (ii) In the Industrial/Business Pool, licensees may request the Commission's Wireless
                     Telecommunications Bureau to approve the use of special mobile unit identifiers in lieu of the
                     assigned call sign. Such requests, however, will not be granted where it appears that harmful
                     interference to international operations may be caused by stations below 50 MHz, or by
                     stations operating in areas within 80 km (50 miles) of an international boundary, or where it
                     appears that the proposed method of identification will not adequately distinguish the mobile
                     units of the applicant from the mobile units of other licensees in the area.

                (iii) In the Industrial/Business Pool, railroad licensees (as defined in § 90.7) may identify stations by
                      the name of the railroad and the train number, caboose number, engine number, or the name of
                      the fixed wayside station. If none of these forms is practicable, any similar name or number
                      may be designated by the railroad concerned for use by its employees in the identification of
                      fixed points or mobile units, provided that a list of such identifiers is maintained by the railroad.
                      An abbreviated name or the initials of the railroad may be used where such are in general
                      usage. In those areas where it is shown that no difficulty would be encountered in identifying
                      the transmission of a particular station (as, for example, where stations of one licensee are
                      located in a yard isolated from other radio installations), approval may be given to a request
                      from the licensee for permission to omit the station identification.

47 CFR 90.425(a)(4)(iii) (enhanced display)                                                                  page 321 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.425(a)(5)
Private Land Mobile Radio Services

           (5) Use of identifiers in addition to assigned call signs. Nothing in this section shall be construed as
               prohibiting the transmission of station or unit identifiers which may be necessary or desirable for
               system operation, provided that they are transmitted in addition to the assigned station call sign or
               other permissible form of identification.

     (b) Use of automatic Morse code identification equipment. Automatically activated equipment may be used to
         transmit station identification in International Morse Code pursuant to the following conditions:

           (1) The signal output of the automatic identification equipment shall be connected to the transmitter at
               the microphone input or any other manufacturer-provided signal input terminal and shall be adjusted
               to produce 40 percent ±10 percent of the maximum permissible modulation or deviation level. This
               adjustment shall be performed when all other modulating signals are absent.

           (2) The Morse code transmission rate shall be maintained between 20 and 25 words per minute.

           (3) The frequency of the keyed tone comprising the identification signal shall be 1200 ±800 Hz. A
               licensee may be required to change the frequency in order to prevent interference to the operations
               of another co-channel licensee.

           (4) Should activation of automatic Morse code identification equipment interrupt the communications of
               another co-channel licensee, the Commission may require the use of equipment which will delay
               automatic station identification until such co-channel communications are completed.

     (c) Special provisions for identification in the Radiolocation Service.

           (1) Stations in the Radiolocation Service are not required to identify except upon special instructions
               from the Commission or as required by paragraphs (c)(2) and (3) of this section.

           (2) Stations in the Radiolocation Service operating on frequencies above 3400 kHz that employ spread
               spectrum techniques shall transmit a two letter manufacturer's designator, authorized by the
               Commission on the station authorization, at the beginning and ending of each transmission and
               once every 15 minutes during periods of continuing operation. The designator shall be transmitted in
               International Morse Code at a speed not exceeding 25 words per minute, and the spread spectrum
               mode of operation shall be maintained while the designator is being transmitted. The identifying
               signal shall be clearly receivable in the demodulated audio of a narrow-band FM receiver.

           (3) Oceanographic radars operating in the bands shown in section 90.103(b) shall transmit a station
               identification (call sign) on the assigned frequency, in international Morse code at a transmission
               rate in accordance with paragraph (b)(2) of this section at the end of each data acquisition cycle, but
               at an interval of no more than 20 minutes.

     (d) General exemptions. A station need not transmit identification if:

           (1) It is a mobile station operating on the transmitting frequency of the associated base station.

           (2) It is a mobile station in the Public Safety Pool using F1E or G1E emission.

           (3) It is transmitting for telemetering purposes or for the activation of devices which are employed solely
               as a means of attracting attention, or for remote control purposes, or which is retransmitting by self-
               actuating means, a radio signal received from another radio station or stations.

           (4) It is any type of radiopositioning or radar station authorized in a service other than the Radiolocation
               Service.

           (5) It is used solely for automatic vehicle monitoring or location.

47 CFR 90.425(d)(5) (enhanced display)                                                                   page 322 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.425(d)(6)
Private Land Mobile Radio Services

           (6) It is a paging station authorized in accordance with the provisions of § 90.20(a)(2)(v).

           (7) It is a mobile station employing non-voice emissions and the associated base station identifies on
               behalf of the mobile unit(s).

           (8) It is a base or mobile station in the 220–222 MHz band authorized to operate on a nationwide basis
               in accordance with subpart T of this part.

           (9) It is a wireless microphone station operating in accordance with the provisions of § 90.265(b).

          (10) It is a Roadside Unit in a DSRCS system.

     (e) Special provisions for stations licensed under this part that are classified as CMRS providers under part
         20 of this chapter.

           (1) Station identification will not be required for 929–930 MHz nationwide paging licensees or MTA or
               EA-based SMR licensees. All other CMRS stations will be required to comply with the station
               identification requirements of this paragraph.

           (2) CMRS stations subject to a station identification requirement will be permitted to use a single call
               sign for commonly owned facilities that are operated as part of a single system. The call sign must
               be transmitted each hour within five minutes of the hour, or upon completion of the first
               transmission after the hour.

           (3) CMRS stations granted exclusive channels may transmit their call signs digitally. A licensee that
               identifies its call sign in this manner must provide the Commission, upon request, information
               sufficient to decode the digital transmission and ascertain the call sign transmitted.

     (f) Special provisions for stations licensed under this part that are not classified as CMRS providers under
         part 20 of this chapter.

           (1) Stations subject to a station identification requirement will be permitted to use a single call sign for
               commonly owned facilities that are operated as part of a single system.

           (2) Stations licensed on an exclusive basis in the bands between 150 and 512 MHz that normally
               employ digital signals for the transmission of data, text, control codes, or digitized voice may be
               identified by digital transmission of the call sign. A licensee that identifies its call sign in this manner
               must provide the Commission, upon request, information sufficient to decode the digital
               transmission and ascertain the call sign transmitted.

[43 FR 54791, Nov. 22, 1978]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.425, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.427 Precautions against unauthorized operation.
     (a) Each transmitter shall be so installed and protected that it is not accessible to or capable of operation by
         persons other than those duly authorized by and under the control of the licensee. Provisions of this part
         authorizing certain unlicensed persons to operate stations, or authorizing unattended operation of
         stations in certain circumstances, shall not be construed to change or diminish in any respect the

47 CFR 90.427(a) (enhanced display)                                                                         page 323 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.427(b)
Private Land Mobile Radio Services

           responsibility of station licensees to maintain control over the stations licensed to them (including all
           transmitter units thereof), or for the proper functioning and operation of those stations and transmitter
           units in accordance with the terms of the licenses of those stations.

     (b) Except for frequencies used in accordance with § 90.417, no person shall program into a transmitter
         frequencies for which the licensee using the transmitter is not authorized.

[43 FR 54791, Nov. 22, 1978, as amended at 52 FR 47570, Dec. 15, 1987]

§ 90.429 Control point and dispatch point requirements.
     (a) Control point required. Unless permitted to be operated on an unattended basis, each station shall be
         provided with a control point;

     (b) A control point is an operating position:

           (1) Which must be under the control and supervision of the licensee;

           (2) Where a person immediately responsible for the operation of the transmitter is stationed;

           (3) Where the monitoring facilities required by this part are installed.

     (c) Control point location. The location of the control point will be specified in the station license and will be
         assumed to be the same as that of the transmitting equipment unless an application for a different
         location has been approved by the Commission.

     (d) Control point facilities required. At each control point, the following facilities shall be installed:

           (1) A carrier-operated device which will provide continuous visual indication when the transmitter is
               radiating, or, a pilot lamp or meter which will provide continuous visual indication when the
               transmitter circuits have been placed in a condition to produce radiation. The provisions of this
               subparagraph shall not apply to hand-carried transmitters or transmitters installed on motorcycles.
               The control point for a transmitter utilized to activate another radio station may employ a single pilot
               lamp or meter as an indication of the activation of local and remote transmitters.

           (2) Facilities which will permit the person responsible for the operation of the transmitter either to
               disconnect the dispatch point circuits from the transmitter or to render the transmitter inoperative
               from any dispatch point under his supervision; and

           (3) Facilities which will permit the person responsible for the operation of the transmitter to turn the
               transmitter carrier on and off at will.

     (e) Dispatch point. A dispatch point is any position from which messages may be transmitted under the
         supervision of the person at a control point who is responsible for the operation of the transmitter.
         Dispatch points may be installed without authorization from the Commission.

[43 FR 54791, Nov. 22, 1978; 44 FR 67118, Nov. 23, 1979, as amended at 48 FR 29517, June 27, 1983]

§ 90.431 Unattended operation.
No person is required to be in attendance at a station when transmitting during normal rendition of service and
when either:

47 CFR 90.431 (enhanced display)                                                                             page 324 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.431(a)
Private Land Mobile Radio Services

     (a) Transmitting for telemetering purposes; or,

     (b) Retransmitting by self-actuating means a radio signal received from another radio station or stations.

§ 90.433 Operator requirements.
     (a) No operator license or permit is required for the operation, maintenance, or repair of stations licensed
         under this part.

     (b) Any person, with the consent or authorization of the licensee, may employ stations in this service for the
         purpose of telecommunications.

     (c) The station licensee shall be responsible for the proper operation of the station at all times and is
         expected to provide observations, servicing and maintenance as often as may be necessary to ensure
         proper operation. All adjustments or tests during or coincident with the installation, servicing, or
         maintenance of the station should be performed by or under the immediate supervision and responsibility
         of a person certified as technically qualified to perform transmitter installation, operation, maintenance,
         and repair duties in the private land mobile services and fixed services by an organization or committee
         representative of users in those services.

     (d) The provisions of paragraph (b) of this section shall not be construed to change or diminish in any respect
         the responsibility of station licensees to have and to maintain control over the stations licensed to them
         (including all transmitter units thereof), or for the proper functioning and operation of those stations
         (including all transmitter units thereof), in accordance with the terms of the licenses of those stations.

(Secs. 4(i) and 303(r), Communications Act of 1934, as amended, 47 U.S.C. 154(i) and 303(r), and sec. 553 of the
Administrative Procedures Act, 5 U.S.C. 553)

[49 FR 20672, May 16, 1984]

§ 90.437 Posting station licenses.
     (a) The current original authorization for each station shall be retained as a permanent part of the station
         records but need not be posted.

     (b) Entities authorized under this part must make available either a clearly legible photocopy of the
         authorization for each base or fixed station at a fixed location at every control point of the station or an
         address or location where the current authorization may be found.

     (c) An applicant operating under temporary authority in accordance with § 90.159 must post an executed
         copy of FCC Form 601 at every control point of the system or an address or location where the current
         executed copy may be found.

[43 FR 54791, Nov. 22, 1978, as amended at 45 FR 59884, Sept. 11, 1980; 47 FR 41045, Sept. 16, 1982; 47 FR 51883, Nov. 18,
1982; 54 FR 4030, Jan. 27, 1989; 59 FR 59965, Nov. 21, 1994; 63 FR 68966, Dec. 14, 1998]

§ 90.439 Inspection of stations.
All stations and records of stations in these services shall be made available for inspection at any reasonable time
and any time while the station is in operation upon reasonable request of an authorized representative of the
Commission.

47 CFR 90.439 (enhanced display)                                                                               page 325 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.441
Private Land Mobile Radio Services

§ 90.441 Inspection and maintenance of antenna structure marking and associated control
equipment.
The owner of each antenna structure required to be painted and/or illuminated under the provisions of Section
303(q) of the Communications Act of 1934, as amended, shall operate and maintain the antenna structure painting
and lighting in accordance with part 17 of this chapter. In the event of default by the owner, each licensee or
permittee shall be individually responsible for conforming to the requirements pertaining to antenna structure
painting and lighting.

[61 FR 4369, Feb. 6, 1996]

§ 90.443 Content of station records.
Each licensee of a station in these services shall maintain records in accordance with the following:

     (a) For all stations, the results and dates of the transmitting measurements required by § 90.215 of this part
         and the name of the person or persons making the measurements.

     (b) For all stations, the dates and pertinent details of any maintenance performed on station equipment, and
         the name and address of the service technician who did the work. If all maintenance is performed by the
         same technician or service company, the name and address need be entered only once in the station
         records.

     (c) For private land stations that are interconnected with the public switched telephone network, the licensee
         must maintain a detailed description of how interconnection is accomplished. When telephone service
         costs are shared, at least one licensee participating in the cost sharing arrangement must maintain cost
         sharing records. A report of the cost distribution must be placed in the licensee's station records and
         made available to participants in the sharing and the Commission upon request. See § 90.477.

     (d) For shared land stations, the records required by § 90.179.

[43 FR 54791, Nov. 22, 1978, as amended at 48 FR 26621, June 9, 1983; 48 FR 29518, June 27, 1983; 50 FR 39681, Sept. 30, 1985;
50 FR 40976, Oct. 8, 1985; 61 FR 4369, Feb. 6, 1996]

§ 90.445 Form of station records.
     (a) Station records shall be kept in an orderly manner, and in such detail that the data required are readily
         available. Key letters or abbreviations may be used if proper meaning or explanation is set forth in the
         record.

     (b) Each entry in the records of each station shall be signed by a person qualified to do so, having actual
         knowledge of the facts to be recorded.

     (c) No record or portion thereof shall be erased, obliterated, or wilfully destroyed within the required retention
         period. Any necessary correction may be made only by the person originating the entry, who shall strike
         out the erroneous portion, initial the correction made, and indicate the date of correction.

§ 90.447 Retention of station records.
Records required by this part shall be retained by the licensee for at least one year.

Subpart O—Transmitter Control
47 CFR 90.447 (enhanced display)                                                                              page 326 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.460
Private Land Mobile Radio Services

§ 90.460 Scope.
This subpart sets forth the provisions relating to permissible methods of transmitter control and interconnection
(see the definition in § 90.7) of radio systems authorized under this part.

[44 FR 67124, Nov. 23, 1979, as amended at 62 FR 18934, Apr. 17, 1997]

§ 90.461 Direct and remote control of transmitters.
     (a) In general. Radio transmitters may be operated and controlled directly (as when the operating position for
         the transmitter and the transmitter being operated are at the same location), or remotely (as when the
         transmitter being operated and the position from which it is being operated are at different locations).

     (b) Control of transmitters at remote locations. Radio transmitters at remote locations may be operated and
         controlled through the use of wire line or radio links; or through dial-up circuits, as provided in paragraph
         (c) of this section. Such control links or circuits may be either those of the licensee or they may be
         provided by common carriers authorized by law to furnish such service.

     (c) Dial-up circuits. Dial-up circuits may be provided by wire line telephone companies under appropriate
         tariffs, and they may be used by licensees for purposes of transmitter control, provided:

           (1) The dial-up circuits serve only to link licensed transmitter control points and the transmitters being
               controlled.

           (2) The dial-up circuits are so designed that the transmitters being controlled cannot be operated from
               any fixed position other than the licensed control points for those transmitters.

           (3) Equipment used to provide the transmitter/dial-up-circuit interface is designed to preclude
               associated mobile units of the licensee from reaching any point(s) served by the wire line telephone
               facilities other than the control point(s) of the station(s) controlled.

           (4) Any direct electrical connection to the telephone network shall comply with applicable tariffs and
               with part 68 of the Commission's Rules (See § 90.5(j)).

           (5) Interconnection, within the meaning of §§ 90.7 and 90.477 through 90.483, may not take place at a
               control point which connects to its associated transmitter(s) through dial-up circuits; nor may such
               dial-up transmitter control circuits be used in conjunction with (or shared by) interconnection
               equipment.

[43 FR 54791, Nov. 22, 1978, as amended at 44 FR 67124, Nov. 23, 1979; 60 FR 50123, Sept. 28, 1995]

§ 90.463 Transmitter control points.
     (a) A control operator is required to be stationed at the operating position of a transmitter control point. A
         control operator is any person designated by the licensee to exercise supervision and control over the
         operation and use of the licensee's facilities. The control operator may be the licensee; or an employee of
         the licensee; or the agent of the licensee, appointed by the licensee to act as the control operator; or a
         third-party contractor, engaged by the licensee to serve as the control operator: Provided, however, In no
         case, through appointment or designation of any person to serve as control operator, may the licensee
         delegate any of the duties and responsibilities the licensee may have in his capacity as licensee.

47 CFR 90.463(a) (enhanced display)                                                                      page 327 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.463(b)
Private Land Mobile Radio Services

     (b) Each station or licensed system of communication shall normally have a control point, or control points, at
         which the control operator or operators are stationed and at or from which the licensee may exercise
         supervision and control over the authorized facilities, as required by the provisions of § 90.461. Provided,
         however, Control point requirements may vary from one system to another, depending upon the nature of
         the radio operation; the way and by whom the facilities are employed; and other factors, as set out in other
         rule sections under this subpart.

     (c) A transmitter control point may be located at a fixed position in a system of communication at or from
         which the control operator exercises supervision and control over the operation and use of the licensed
         facilities. Each fixed transmitter control point shall have equipment and facilities to permit the control
         operator:

           (1) To determine when the transmitter or transmitters controlled are either radiating “RF” energy, or when
               the transmitter circuits have been placed in a condition to produce such radiation. This may be
               accomplished either through the use of a carrier operated device which provides a visual indication
               when the transmitter(s) are radiating or a pilot lamp or meter which provides a visual indication when
               the transmitter circuits have been placed in a condition to produce radiation. Further, where a local
               transmitter is used to activate a remote transmitter or transmitters in the licensee's system of
               communication, a single pilot lamp or meter may be employed to indicate the activation of both the
               local and the remote transmitter(s).

           (2) To turn the carrier of the transmitter on and off at will, or to close the system down completely, when
               circumstances warrant such action.

     (d) The licensee's transmitting facilities may be operated from dispatch points, the fixed control point shall
         have equipment to permit the control operator to either disconnect the dispatch point circuits from the
         transmitter(s) or to render the transmitter(s) inoperative from any dispatch point being supervised.

     (e) Where the system is interconnected with public communication facilities, as provided at §§ 90.477
         through 90.483, and where those rules so require, the fixed control point shall be equipped to permit the
         control operator:

           (1) To monitor co-channel facilities of other licensees sharing an assigned channel or channels with the
               licensee in the licensee's area of operation; and,

           (2) To terminate any transmission(s) or communication(s) between points in the public communications
               system and the private communications system.

     (f) In urban areas, the location of fixed transmitter control points will be specified, “same as transmitter,”
         unless the control point is at a street address which is different from that of the transmitter(s) controlled.
         In rural areas, the location of fixed control points will be specified, “same as transmitter,” unless the
         control point is more than 152.5 m (500 ft) from the transmitter(s) controlled. In the latter case, the
         approximate location of the control point will be specified in distance and direction from the
         transmitter(s) controlled in terms of distance and geographical quadrant, respectively. It would be
         assumed that the location of a fixed control point is the same as the location of the transmitter(s)
         controlled, unless the applicant includes a request for a different location described in appropriate terms
         as indicated herein.

     (g) [Reserved]

47 CFR 90.463(g) (enhanced display)                                                                      page 328 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.463(h)
Private Land Mobile Radio Services

     (h) Mobile transmitters shall be assumed to be under the immediate control of the mobile operator; provided,
         however, overall supervision and control of the operation and use of a communication system may be the
         responsibility of a fixed control point operator. In general, mobile transmitters shall be equipped to permit
         the operator to determine when they are radiating “RF” energy or when the transmitter circuits have been
         placed in a condition to produce such radiation. This may be accomplished either through the use of a
         carrier operated device or of a pilot lamp or meter which will provide a visual indication when the
         transmitter is radiating or has been placed in a condition to produce radiation provided, however, that
         hand-carried or pack-carried transmitters and transmitters installed on motorcycles need not be so
         equipped.

[43 FR 54791, Nov. 22, 1978; 44 FR 32220, June 5, 1979; 44 FR 34134, June 14, 1979, as amended at 44 FR 67125, Nov. 23, 1979;
48 FR 29517, June 27, 1983; 54 FR 39740, Sept. 28, 1989; 58 FR 44960, Aug. 25, 1993]

§ 90.465 Control of systems of communication.
     (a) Depending on design considerations, control of a system of communication may be exercised in varying
         ways. In single frequency simplex, base/mobile operations, control may be exercised by the control
         operator at the fixed control point. In mobile relay systems, where there is an associated control point or
         control station, control may be exercised by the operator at the control point or control station. In mobile-
         only systems, control may be exercised by the mobile operator. In communication systems involving
         multiple base stations or fixed relays control of the system may result from a combination of factors and
         considerations, including control by a fixed control point operator at some point within the system of
         communication or control by the mobile station operator of the licensee.

     (b) In internal systems, as defined in § 90.7, control may be maintained by conforming the system to the
         requirements of §§ 90.471 through 90.475.

     (c) In interconnected systems, as defined in § 90.7, control may be maintained by conforming operation and
         system design to that permitted in §§ 90.477 through 90.483.

[43 FR 54791, Nov. 22, 1978, as amended at 54 FR 39740, Sept. 28, 1989; 72 FR 35199, June 27, 2007]

§ 90.467 Dispatch points.
Dispatch points meeting the requirements of this section need not be specifically authorized; provided, however,
that the licensee of any radio station operated from a dispatch point or points shall assume full responsibility for the
use and operation of the authorized facilities in compliance with all applicable provisions of law or rule and shall
comply with the policy:

     (a) A dispatch point may be linked to the transmitter(s) being operated by private or leased wire line of fixed
         radio circuits, provided the requirements of § 90.463 are met.

     (b) No telephone position in the public, switched, telephone network will be treated as a dispatch point within
         the meaning or intent of this section.

     (c) Operation of transmitting facilities from dispatch points is permitted only when the control operator at a
         fixed control point in the system is on duty and at no other time.

47 CFR 90.467(c) (enhanced display)                                                                           page 329 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.469
Private Land Mobile Radio Services

§ 90.469 Unattended operation.
     (a) Subject to the provisions of §§ 90.243, 90.245, and 90.247, mobile relay, fixed relay, and mobile repeater
         stations are authorized for unattended operation; and the transmitter control point requirements set out at
         §§ 90.463 through 90.465 shall not apply.

     (b) Self-activated transmitters may be authorized for unattended operation where they are activated by either
         electrical or mechanical devices, provided the licensee adopts reasonable means to guard against
         malfunctions and harmful interference to other users.

                                      INTERNAL TRANSMITTER CONTROL SYSTEMS

§ 90.471 Points of operation in internal transmitter control systems.
The transmitting facilities of the licensee may be operated from fixed positions located on premises controlled by
the licensee. The fixed position may be part of a private telephone exchange or it may be any position in a closed or
limited access communications facility intended to be used by employees of the licensee for internal
communications and transmitter control purposes. Operating positions in internal transmitter control systems are
not synonymous with dispatch points (See § 90.467) nor with telephone positions which are part of the public,
switched telephone network; and the scheme of regulation is to be considered and treated as being different. See
§§ 90.485 through 90.489.

[44 FR 67125, Nov. 23, 1979]

§ 90.473 Operation of internal transmitter control systems through licensed fixed control
points.
An internal transmitter control system may be operated under the control and supervision of a control operator
stationed at a fixed control point in the system. In such a case, the control point must be equipped to permit the
control operator to monitor all traffic to and from fixed positions and mobile stations or paging units of the licensee;
and the system shall be so designed to permit the control operator to either disconnect any operating position in the
internal system from the transmitter control circuit or to close the system down entirely at will.

[44 FR 67125, Nov. 23, 1979]

§ 90.475 Operation of internal transmitter control systems in specially equipped systems.
     (a) An internal transmitter control system need not be designed to meet the requirements of § 90.473 if it
         meets the following requirements:

           (1) All operating positions must be located on premises controlled by the licensee.

           (2) An internal transmitter control system may be used in conjunction with other approved methods of
               transmitter control and interconnection so long as the internal transmitter control system, itself, is
               neither accessed from telephone positions in the public switched telephone network (PSTN), nor
               uses dial-up circuits in the PSTN. Licensees with complex communications systems involving fixed
               systems whose base stations are controlled by such systems may automatically access these base
               stations through the microwave or operational fixed systems from positions in the PSTN, so long as
               the base stations and mobile units meet the requirements of § 90.483 and if a separate circuit is
               provided for each mode of transmitter operation (i.e., conventional, dial-up or Internet).

47 CFR 90.475(a)(2) (enhanced display)                                                                   page 330 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.475(a)(3)
Private Land Mobile Radio Services

           (3) The system must be designed so that upon completion of a transmission, the base station
               transmitter(s) will close down automatically within 3 seconds.

           (4) To guard against malfunctions, the system must also be designed so that the base station(s) will be
               deactivated by an automatic timing device when a modulated signal is not transmitted for a period
               of three (3) consecutive minutes.

           (5) The system must include automatic monitoring equipment, installed at the base station transmitter
               site(s), which will prevent the activation of the system when signals of other co-channel stations are
               present.

     (b) [Reserved]

[43 FR 54791, Nov. 22, 1978, as amended at 44 FR 67125, Nov. 23, 1979; 47 FR 17521, Apr. 23, 1982; 72 FR 35199, June 27, 2007]

                                               INTERCONNECTED SYSTEMS

§ 90.476 Interconnection of fixed stations and certain mobile stations.
     (a) Fixed stations and mobile stations used to provide the functions of fixed stations pursuant to the
         provisions of §§ 90.35(c)(11), 90.35(c)(42), and 90.267 are not subject to the interconnection provisions
         of §§ 90.477 and 90.483 and may be interconnected with the facilities of common carriers.

     (b) Mobile stations used to provide the functions of base and mobile relay stations pursuant to the provisions
         of §§ 90.35(c)(11), 90.35(c)(42), and 90.267 are not subject to the provisions of § 90.477(d)(3) and may
         be interconnected with the facilities of common carriers subject to the provisions of §§ 90.477(d)(1),
         90.477(d)(2), 90.477(e), and 90.483.

     (c) The provisions of this section do not apply to commercial mobile radio service providers, as defined in
         part 20 of this chapter.

[50 FR 15152, Apr. 17, 1985, as amended at 59 FR 59965, Nov. 21, 1994; 62 FR 18934, Apr. 17, 1997]

§ 90.477 Interconnected systems.
     (a) Applicants for new land stations to be interconnected with the public switched telephone network must
         indicate on their applications (class of station code) that their stations will be interconnected. Licensees
         of land stations that are not interconnected may interconnect their stations with the public switched
         telephone network only after modifying their license. See § 1.929 of this chapter. In all cases a detailed
         description of how interconnection is accomplished must be maintained by licensees as part of their
         station records. See § 90.433 of this part.

     (b) In the frequency ranges 806–824 MHz, 851–869 MHz, 896–901 MHz, and 935–940 MHz, interconnection
         with the public switched telephone network is authorized under the following conditions:

           (1) Interconnected operation is on a secondary basis to dispatch operation. This restriction will not
               apply to trunked systems or on any channel assigned exclusively to one licensee.

           (2) Interconnection may be accomplished at any location through a separate or shared interconnection
               device. When land stations subject to this part are multiple licensed or shared by authorized users,
               arrangements for telephone service must be made with a duly authorized carrier by users, licensees,
               or their authorized agents on a non-profit cost sharing basis. When telephone service costs are

47 CFR 90.477(b)(2) (enhanced display)                                                                         page 331 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.477(c)
Private Land Mobile Radio Services

                shared, at least one licensee participating in the cost sharing arrangement must maintain cost
                sharing records and the costs must be distributed at least once a year. Licensees, users, or their
                authorized agents may also make joint use arrangements with a duly authorized carrier and arrange
                that each licensee or user pay the carrier directly for the licensee's or user's share of the joint use of
                the shared telephone service. A report of the cost distribution must be placed in the licensee's
                station records and made available to participants in the sharing and the Commission upon request.
                In all cases, arrangements with the duly authorized carrier must disclose the number of licensees
                and users and the nature of the use.

     (c) Interconnection of facilities in the Radiolocation Service (subpart F) will not be permitted.

     (d) In the frequency ranges below 800 MHz, interconnection with the public switched telephone network is
         authorized under the following conditions:

           (1) Interconnected operation is on a secondary basis to dispatch operation. This restriction will not
               apply to trunked systems or on any channel assigned exclusively to one licensee.

           (2) Interconnection may be accomplished at any location through a separate or shared interconnection
               device. When land stations subject to this part are multiple licensed or shared by authorized users,
               arrangements for telephone service must be made with a duly authorized carrier by users, licensees,
               or their authorized agents on a non-profit cost sharing basis. When telephone service costs are
               shared, at least one licensee participating in the cost sharing arrangement must maintain cost
               sharing records and the costs must be distributed at least once a year. Licensees, users, or their
               authorized agents may also make joint use arrangements with a duly authorized carrier and arrange
               that each licensee or user pay the carrier directly for the licensee's or user's share of the joint use of
               the shared telephone service. A report of the cost distribution must be placed in the licensee's
               station records and made available to participants in the sharing and the Commission upon request.
               In all cases, arrangements with the duly authorized carrier must disclose the number of licensees
               and users and the nature of the use.

           (3) For licensees in the Industrial/Business Pool and those licensees who establish eligibility pursuant to
               § 90.20(a)(2) of this part, except for §§ 90.20(a)(2)(i) and 90.20(a)(2)(ii) of this part and medical
               emergency systems in the 450–470 MHz band, interconnection will be permitted only where the
               base station site or sites proposed stations are located 120 km (75 mi.) or more from the designated
               centers of the urbanized areas listed below. If these licensees seek to connect within 120 km (75
               mi.) of the 25 cities, they must obtain the consent of all co-channel licensees located both within 120
               km (75 mi.) of the center of the city; and within 120 km (75 mi.) of the interconnected base station
               transmitter. The consensual agreements among the co-channel licensees must specifically state the
               terms agreed upon and a statement must be submitted to the Commission indicating that all co-
               channel licensees have consented to the use of interconnection. If a licensee has agreed to the use
               of interconnection on the channel, but later decides against the use of interconnection, the licensee
               may request that the co-channel licensees reconsider the use of interconnection. If the licensee is
               unable to reach an agreement with co-channel licensees, the licensee may request that the
               Commission consider the matter and assign it to another channel. If a new licensee is assigned to a
               frequency where all the co-channel licensees have agreed to the use of interconnection and the new
               licensee does not agree, the new licensee may request that the co-channel licensees reconsider the
               use of interconnection. If the new licensee cannot reach an agreement with co-channel licensees it
               may request that the Commission reassign it to another channel.

47 CFR 90.477(d)(3) (enhanced display)                                                                     page 332 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.477(e)
Private Land Mobile Radio Services

                    Note: Coordinates are referenced to North American Datum 1983 (NAD83).

                                                                           North               West
                               Urban area
                                                                          latitude           longitude
 New York, New York-Northeastern New Jersey                           40°45′06.4″        73°59′37.5″
 Los Angeles-Long Beach, California                                   34°03′15.0″        118°14′31.3″
 Chicago, Illinois-Northwestern Indiana                               41°52′28.1″        87°38′22.2″
 Philadelphia, Pennsylvania/New Jersey                                39°56′58.4″        75°09′19.6″
 Detroit, Michigan                                                    42°19′48.1″        83°02′56.7″
 San Francisco-Oakland, California                                    37°46′38.7″        122°24′43.9″
 Boston, Massachusetts                                                42°21′24.4″        71°03′23.2″
 Washington, DC/Maryland/Virginia                                     38°53′51.4″        77°00′31.9″
 Cleveland, Ohio                                                      41°29′51.2″        81°41′49.5″
 St Louis, Missouri/Illinois                                          38°37′45.2″        90°12′22.4″
 Pittsburgh, Pennsylvania                                             40°26′19.2″        79°59′59.2″
 Minneapolis-St. Paul, Minnesota                                      44°58′56.9″        93°15′43.8″
 Houston, Texas                                                       29°45′26.8″        95°21′37.8″
 Baltimore, Maryland                                                  39°17′26.4″        76°36′43.9″
 Dallas-Fort Worth, Texas                                             32°47′09.5″        96°47′38.0″
 Milwaukee, Wisconsin                                                 43°02′19.0″        87°54′15.3″
 Seattle-Everett, Washington                                          47°36′31.4″        122°20′16.5″
 Miami, Florida                                                       25°46′38.4″        80°11′31.2″
 San Diego, California                                                32°42′53.2″        117°09′24.1″
 Atlanta, Georgia                                                     33°45′10.4″        84°23′36.7″
 Cincinnati, Ohio/Kentucky                                            39°06′07.2″        84°30′34.8″
 Kansas City, Missouri/Kansas                                         39°04′56.0″        94°35′20.8″
 Buffalo, New York                                                    42°52′52.2″        78°52′20.1″
 Denver, Colorado                                                     39°44′58.0″        104°59′23.9″
 San Jose, California                                                 37°20′15.8″        121°53′27.8″

     (e) Additional frequencies shall not be assigned to enable any licensee to employ a preferred interconnection
         capability.

      (f) Paging systems operating on frequencies in the bands below 800 MHz are not subject to the
          interconnection provisions of § 90.477(d)(3).

[47 FR 17520, Apr. 23, 1982, as amended at 48 FR 29518, June 27, 1983; 50 FR 15152, Apr. 17, 1985; 51 FR 14998, Apr. 22, 1986;
51 FR 37401, Oct. 22, 1986; 52 FR 15501, Apr. 29, 1987; 52 FR 29856, Aug. 12, 1987; 53 FR 1025, Jan. 15, 1988; 58 FR 44961,
Aug. 25, 1993; 61 FR 6576, Feb. 21, 1996; 62 FR 18934, Apr. 17, 1997; 63 FR 68966, Dec. 14, 1998]

47 CFR 90.477(f) (enhanced display)                                                                             page 333 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.483
Private Land Mobile Radio Services

§ 90.483 Permissible methods and requirements of interconnecting private and public systems
of communications.
Interconnection may be accomplished by commercial mobile service providers licensed under this part by any
technically feasible means. Interconnection may be accomplished by private mobile service providers either
manually or automatically under the supervision and control of a transmitter control operator at a fixed position in
the authorized system of communications or it may be accomplished under the supervision and control of mobile
operators, and is subject to the following provisions:

     (a) Where a system is interconnected manually at a fixed control point, the control point operator must
         maintain the capability to turn the carrier of the transmitter off or to de-activate the system completely
         when circumstances warrant such action.

     (b) When the system is interconnected automatically it may be supervised at the control point or in mobile
         units.

           (1) For control point supervision, the following is required:

                 (i)   The control point operator must maintain the capability to turn the carrier of the transmitter off
                       or to de-activate the system completely when circumstances warrant such action.

                (ii) When a frequency is shared by more than one system, automatic monitoring equipment must
                     be installed at the base station to prevent activation of the transmitter when signals of co-
                     channel stations are present and activation would interfere with communications in progress.
                     Licensees may operate without the monitoring equipment if they have obtained the consent of
                     all co-channel licensees located within a 120 kilometer (75 mile) radius of the interconnected
                     base station transmitter. A statement must be submitted to the Commission indicating that all
                     co-channel licensees have consented to operate without the monitoring equipment. If a
                     licensee has agreed that the use of monitoring equipment is not necessary, but later decides
                     that the monitoring equipment is necessary, the licensee may request that the co-channel
                     licensees reconsider the use of monitoring equipment. If the licensee cannot reach an
                     agreement with co-channel licensees, the licensee may request that the Commission consider
                     the matter and assign it to another channel. If a new licensee is assigned to a frequency where
                     all the co-channel licensees have agreed that the use of monitoring equipment is not necessary,
                     and the new licensee does not agree, the new licensee may request the co-channel licensees to
                     reconsider the use of monitoring equipment. If the new licensee cannot reach an agreement
                     with co-channel licensees, it should request a new channel from the Commission. Systems on
                     frequencies above 800 MHz are exempt from this requirement.

           (2) For mobile unit supervision, the following is required:

                 (i)   When a frequency is shared by more than one system, automatic monitoring equipment must
                       be installed at the base station to prevent activation of the transmitter when signals of co-
                       channel stations are present and activation would interfere with communications in progress.
                       Licensees may operate without this equipment if they have obtained the consent of all co-
                       channel licensees located within a 120 kilometer (75 mile) radius of the interconnected base
                       station transmitter. A statement must be submitted to the Commission indicating that all co-
                       channel licensees have consented to operate without the monitoring equipment. If a licensee
                       has agreed that the use of monitoring equipment is not necessary, but later decides that the
                       monitoring equipment is necessary, the licensee may request that the co-channel licensees
                       reconsider the use of monitoring equipment. If the licensee cannot reach an agreement with co-
47 CFR 90.483(b)(2)(i) (enhanced display)                                                                  page 334 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.483(b)(2)(ii)
Private Land Mobile Radio Services

                      channel licensees, the licensee may request that the Commission consider the matter and
                      assign it to another channel. If a new licensee is assigned to a frequency where all the co-
                      channel licensees have agreed that the use of monitoring equipment is not necessary, and the
                      new licensee does not agree, the new licensee may request the co-channel licensees to
                      reconsider the use of monitoring equipment. If the new licensee cannot reach an agreement
                      with co-channel licensees, it should request a new channel from the Commission. Systems on
                      frequencies above 800 MHz are exempt from this requirement.

                (ii) Initial access points within the public switched telephone network must be limited to
                     transmission of a 3-second tone, after which time the transmitter shall close down. No
                     additional signals may be transmitted until acknowledgement from a mobile station of the
                     licensee is received. Licensees are exempt from this requirement if they have obtained the
                     consent of all co-channel licensees located within a 120 kilometer (75 mile) radius of the
                     interconnected base station transmitter. However, licensees may choose to set their own time
                     limitations. A statement must be submitted to the Commission indicating that all co-channel
                     licensees have consented to operate without the monitoring equipment. If a licensee has
                     agreed that the use of monitoring equipment is not necessary, but later decides that the
                     monitoring equipment is necessary, the licensee may request that the co-channel licensees
                     reconsider the use of monitoring equipment. If the licensee cannot reach an agreement with co-
                     channel licensees, the licensee may request that the Commission consider the matter and
                     assign it to another channel. If a new licensee is assigned to a frequency where all the co-
                     channel licensees have agreed that the use of monitoring equipment is not necessary, and the
                     new licensee does not agree, the new licensee may request the co-channel licensees to
                     reconsider the use of monitoring equipment. If the new licensee cannot reach an agreement
                     with co-channel licensees, it should request a new channel from the Commission. Systems on
                     frequencies above 800 MHz are exempt from this requirement.

     (c) In single frequency systems, equipment must be installed at the base station which will limit any single
         transmission from within the public switched telephone network to 30 seconds duration and which in turn
         will activate the base station receiver to monitor the frequency for a period of not less than three (3)
         seconds. The mobile station must be capable of terminating the communications during the three (3)
         seconds. Licensees are exempt from this requirement if they have obtained the consent of all co-channel
         licensees located within a 120 km (75 mile) radius of the interconnected base station transmitter.
         However, licensees may choose to set their own time limitations. A statement must be submitted to the
         Commission indicating that all co-channel licensees have consented to operate without the monitoring
         equipment. If a licensee has agreed that the use of monitoring equipment is not necessary, but later
         decides that the monitoring equipment is necessary, the licensee may request that the co-channel
         licensees reconsider the use of monitoring equipment. If the licensee cannot reach an agreement with co-
         channel licensees, the licensee may request that the Commission consider the matter and assign it
         another channel. If a new licensee is assigned to a frequency where all the co-channel licensees have
         agreed that the use of monitoring equipment. If the new licensee cannot reach an agreement with co-
         channel licensees, it should request a new channel from the Commission.

     (d) A timer must be installed at the base station transmitter which limits communications to three (3)
         minutes. After three (3) minutes, the system must close down, with all circuits between the base station
         and the public switch telephone network disconnected. This provision does not apply to systems which
         establish eligibility pursuant to §§ 90.20(a)(1)(i), 90.20(a)(1)(ii), and 90.20(a)(2), except §§ 90.20(a)(2)(i)
         and 90.20(a)(2)(ii), or who are Power, Petroleum, or Railroad licensees (as defined in § 90.7), or to
         systems above 800 MHz. All systems must be equipped with a timer that closes down the transmitter

47 CFR 90.483(d) (enhanced display)                                                                        page 335 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.490
Private Land Mobile Radio Services

           within three minutes of the last transmission. Licensees may operate without these requirements if they
           have obtained the consent of all co-channel licensees located within a 120 km (75 mile) radius of the
           interconnected base station transmitter. However, licensees may choose to set their own time limitations.
           A statement must be submitted to the Commission indicating that all co-channel licensees have
           consented to operate without the monitoring equipment. If a licensee has agreed that the use of
           monitoring equipment is not necessary, but later decides that the monitoring equipment is necessary, the
           licensee may request that the co-channel licensees reconsider the use of monitoring equipment. If the
           licensee cannot reach an agreement with co-channel licensees, the licensee may request that the
           Commission consider the matter and assign it to another channel. If a new licensee is assigned to a
           frequency where all the co-channel licensees have agreed that the use of monitoring equipment is not
           necessary, and the new licensee does not agree, the new licensee may request the co-channel licensees
           to reconsider the use of monitoring equipment. If the new licensee cannot reach an agreement with co-
           channel licensees, it should request a new channel from the Commission.

[47 FR 17520, Apr. 23, 1982, as amended at 48 FR 29518, June 27, 1983; 50 FR 15153, Apr. 17, 1985; 58 FR 44961, Aug. 25, 1993;
59 FR 59966, Nov. 21, 1994; 61 FR 6576, Feb. 21, 1996; 62 FR 18934, Apr. 17, 1997; 72 FR 35199, June 27, 2007]

Subpart P—Paging Operations
§ 90.490 One-way paging operations in the private services.
     (a) Subject to specific prohibition or restriction by rule provisions governing the radio service in which a
         licensee's radio system is authorized, paging operations are permitted:

           (1) Where the signals and messages are transmitted by a control operator of the licensee stationed at a
               licensed control point in the licensee's system of communication.

           (2) Where the signals and messages are transmitted from an operating position within an internal
               system of communication which meets the tests of §§ 90.471 through 90.475.

           (3) Where the signals and messages are transmitted from a dispatch point within the licensee's system
               of communication, as defined as § 90.7.

     (b) Systems employing dial-up circuits (§ 90.461(c)) may be used in one-way paging operations, but only
         where the paging signals are transmitted as provided at paragraph (a)(1) of this section.

     (c) Paging may be initiated directly from telephone positions in the public switched telephone network. When
         land stations are multiple licensed or otherwise shared by authorized users, arrangements for the
         telephone service must be made with a duly authorized carrier by users, licensees, or their authorized
         agents on a non-profit, cost-shared basis. When telephone service costs are shared, at least one licensee
         participating in the cost sharing arrangements must maintain cost sharing records and the costs must be
         distributed at least once a year. Licensees, users, or their authorized agents may also make joint use
         arrangements with a duly authorized carrier and arrange that each licensee or user pay the carrier directly
         for the licensee's or user's share of the joint use of the shared telephone service. A report of the cost
         distribution must be placed in the licensee's station records and made available to participants in the
         sharing arrangement and the Commission upon request. In all cases, arrangements with the duly
         authorized carrier must disclose the number of licensees and users and the nature of the use.

[47 FR 39509, Sept. 8, 1982, as amended at 48 FR 56231, Dec. 20, 1983; 52 FR 15501, Apr. 29, 1987]

§ 90.492 One way paging operations in the 806–824/851–869 MHz and 896–901/935–940 MHz
47 CFR 90.492 (enhanced display)                                                                               page 336 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.493
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bands.
Paging operations are permitted in these bands only in accordance with §§ 90.645(e) and (f).

[54 FR 4030, Jan. 27, 1989]

§ 90.493 Paging operations on exclusive channels in the 929–930 MHz band.
Paging operations on the exclusive channels in the 929–930 MHz band are subject to the rules set forth in this
section.

     (a) Exclusive channels. The center frequencies of the channels in the 929–930 MHz band that may be
         assigned on an exclusive basis are as follows: 929.0125, 929.1125, 929.1375, 929.1875, 929.2125,
         929.2375, 929.2875, 929.3125, 929.3375, 929.3625, 929.3875, 929.4125, 929.4375, 929.4625, 929.4875,
         929.5125, 929.5375, 929.5625, 929.5875, 929.6125, 929.6375, 929.6625, 929.6875, 929.7125, 929.7375,
         929.7625, 929.7875, 929.8125, 929.8375, 929.8625, 929.8875, 929.9125, 929.9375, 929.9625, and
         929.9875 MHz.

     (b) Part 22 licensing, construction and operation rules apply. Licensing, construction and operation of paging
         stations on the exclusive channels in the 929–930 MHz band are subject to the application filing,
         licensing procedure, auction procedure, construction, operation and notification rules and requirements
         that are set forth in part 22 of this chapter for paging stations operating in the 931–932 MHz band,
         instead of procedures elsewhere in this part.

     (c) Part 22 power limits apply; type acceptance required. Paging operations on the exclusive channels in the
         929–930 MHz band are subject to the transmitting power limits set forth in part 22 of this chapter for
         paging stations operating in the 931–932 MHz band, instead of power limits elsewhere in this part.
         Transmitters used on the exclusive channels in the 929–930 MHz band must be of a type accepted under
         either part 22 of this chapter or this part (or both).

[62 FR 11636, Mar. 12, 1997]

§ 90.494 Paging operations on shared channels in the 929–930 MHz band.
     (a) This section applies to licensing of paging stations on the shared (non-exclusive) channels in the
         929–930 MHz band. The center frequencies of these channels are listed in paragraph (b) of this section.

     (b) The following frequencies are available to all eligible part 90 users for one-way paging systems on a
         shared basis only and will not be assigned for the exclusive use of any licensee.

     (c) All frequencies listed in this section may be used to provide one-way paging communications to persons
         eligible for licensing under subpart B or C of this part, representatives of Federal Government agencies,
         individuals, and foreign governments and their representatives. The provisions of § 90.173(b) apply to all
         frequencies listed in this section.

     (d) Licensees on these frequencies may utilize any type of paging operation desired (tone only, tone-voice,
         digital, tactile, optical readout, etc.).

     (e) There shall be no minimum or maximum loading standards for these frequencies.

     (f) The effective radiated power for base stations providing paging service on the shared channels must not
         exceed 3500 watts.

47 CFR 90.494(f) (enhanced display)                                                                   page 337 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.521
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[58 FR 62291, Nov. 26, 1993, as amended at 59 FR 59966, Nov. 21, 1994; 61 FR 8483, Mar. 5, 1996; 62 FR 11637, Mar. 12, 1997; 62
FR 18934, Apr. 17, 1997; 66 FR 57885, Nov. 19, 2001]

Subpart Q [Reserved]

Subpart R—Regulations Governing the Licensing and Use of Frequencies in the 763–775 and
793–805 MHz Bands

Source: 63 FR 58651, Nov. 2, 1998, unless otherwise noted.

§ 90.521 Scope.
This subpart sets forth the regulations governing the licensing and operations of all systems operating in the
758–775 MHz and 788–805 MHz frequency bands. It includes eligibility, operational, planning and licensing
requirements and technical standards for stations licensed in these bands. The rules in this subpart are to be read
in conjunction with the applicable requirements contained elsewhere in this part; however, in case of conflict, the
provisions of this subpart shall govern with respect to licensing and operation in these frequency bands.

[63 FR 58651, Nov. 2, 1998, as amended at 72 FR 48860, Aug. 24, 2007; 77 FR 62463, Oct. 15, 2012]

§ 90.523 Eligibility.
This section implements the definition of public safety services contained in 47 U.S.C. 337(f)(1). The following are
eligible to hold Commission authorizations for systems operating in the 769–775 MHz and 799–805 MHz
frequency bands:

     (a) State or local government entities. Any territory, possession, state, city, county, town, or similar State or
         local governmental entity is eligible to hold authorizations in the 769–775 MHz and 799–805 MHz
         frequency bands.

     (b) Nongovernmental organizations. A nongovernmental organization (NGO) that provides services, the sole
         or principal purpose of which is to protect the safety of life, health, or property, is eligible to hold an
         authorization for a system operating in the 769–775 MHz and 799–805 MHz frequency bands for
         transmission or reception of communications essential to providing such services if (and only for so long
         as) the NGO applicant/licensee:

           (1) Has the ongoing support (to operate such system) of a state or local governmental entity whose
               mission is the oversight of or provision of services, the sole or principal purpose of which is to
               protect the safety of life, health, or property;

           (2) Operates such authorized system solely for transmission of communication essential to providing
               services the sole or principal purpose of which is to protect the safety of life, health, or property; and

           (3) All applications submitted by NGOs must be accompanied by a new, written certification of support
               (for the NGO applicant to operate the applied-for system) by the state or local governmental entity
               referenced in paragraph (b)(1) of this section.

47 CFR 90.523(b)(3) (enhanced display)                                                                         page 338 of 516
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     (c) All NGO authorizations are conditional. NGOs assume all risks associated with operating under conditional
         authority. Authorizations issued to NGOs to operate systems in the 769–775 MHz and 799–805 MHz
         frequency bands include the following condition: If at any time the supporting governmental entity (see
         paragraph (b)(1) of this section) notifies the Commission in writing of such governmental entity's
         termination of its authorization of a NGO's operation of a system in the 769–775 MHz and 799–805 MHz
         frequency bands, the NGO's application shall be dismissed automatically or, if authorized by the
         Commission, the NGO's authorization shall terminate automatically.

     (d) Paragraphs (a) and (b) of this section notwithstanding, no entity is eligible to hold an authorization for a
         system operating in the 769–775 MHz and 799–805 MHz frequency bands on the basis of services, the
         sole or principal purpose of which is to protect the safety of life, health or property, that such entity makes
         commercially available to the public.

     (e) A nationwide license for the 758–769 MHz and 788–799 MHz bands shall be issued to the First
         Responder Network Authority.

[63 FR 58651, Nov. 2, 1998, as amended at 65 FR 53645, Sept. 5, 2000; 72 FR 48860, Aug. 24, 2007; 79 FR 600, Jan. 6, 2014; 81
FR 66832, Sept. 29, 2016]

§ 90.525 Administration of interoperability channels.
     (a) States are responsible for administration of the Interoperability channels in the 769–775 MHz and
         799–805 MHz frequency bands. Base and control stations must be licensed individually. A public safety
         entity meeting the requirements of § 90.523 may operate mobile or portable units on the Interoperability
         channels in the 769–775 MHz and 799–805 MHz frequency bands without a specific authorization from
         the Commission provided it holds a part 90 license. All persons operating mobile or portable units under
         this authority are responsible for compliance with part 90 of these rules and other applicable federal laws.

     (b) License applications for Interoperability channels in the 769–775 MHz and 799–805 MHz frequency
         bands must be approved by a state-level agency or organization responsible for administering state
         emergency communications. States may hold the licenses for Interoperability channels or approve other
         qualified entities to hold such licenses. States may delegate the approval process for interoperability
         channels to another entity, such as regional planning committees.

[72 FR 48860, Aug. 24, 2007]

§ 90.527 Regional plan requirements.
Each regional planning committee must submit a regional plan for approval by the Commission.

     (a) Common elements. Regional plans must incorporate the following common elements:

           (1) Identification of the document as the regional plan for the defined region with the names, business
               addresses, business telephone numbers, and organizational affiliations of the chairpersons and all
               members of the planning committee.

           (2) A summary of the major elements of the plan and an explanation of how all eligible entities within
               the region were given an opportunity to participate in the planning process and to have their
               positions heard and considered fairly.

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           (3) A general description of how the spectrum would be allotted among the various eligible users within
               the region with an explanation of how the requirements of all eligible entities within the region were
               considered and, to the degree possible, met.

           (4) An explanation as to how needs were assigned priorities in areas where not all eligible entities could
               receive licenses.

           (5) An explanation of how the plan had been coordinated with adjacent regions.

           (6) A detailed description of how the plan put the spectrum to the best possible use by requiring system
               design with minimum coverage areas, by assigning frequencies so that maximum frequency reuse
               and offset channel use may be made, by using trunking, and by requiring small entities with minimal
               requirements to join together in using a single system where possible.

           (7) A detailed description of the future planning process, including, but not limited to, amendment
               process, meeting announcements, data base maintenance, and dispute resolution.

           (8) A certification by the regional planning chairperson that all planning committee meetings, including
               subcommittee or executive committee meetings, were open to the public.

     (b) Modification of regional plans. Regional plans may be modified by submitting a written request, signed by
         the regional planning committee, to the Chief, Public Safety and Homeland Security Bureau. The request
         must contain the full text of the modification. Modifications are considered either major or minor.
         Regional planning committees must certify that successful coordination with all adjacent regions has
         occurred for major modifications and that all such regions concur with the major modification. Unless
         requested otherwise by the regional planning committee, the Bureau will only place major modifications
         on public notice for comment.

           (1) Except as noted below, modifications changing the way channels are allocated, allotted or
               coordinated are considered major modifications.

           (2) Modifications changing how channels are allotted are considered minor modifications only if:

                 (i)   The proposed channel change or channel addition involves a facility located more than seventy
                       miles from the adjacent region border;

                (ii) The co-channel or adjacent channel interference contour of the facility changing or adding the
                     channel does not intersect the border of an adjacent region, or

                (iii) The proposed channel change or channel addition has been coordinated in writing with any
                      affected adjacent region.

           (3) Changes in membership or leadership of regional planning committees are considered minor
               modifications.

[63 FR 58651, Nov. 2, 1998, as amended at 79 FR 39339, July 10, 2014]

§ 90.529 State License.
     (a) Narrowband channels designated as state channels in § 90.531 are licensed to each state (as defined in §
         90.7) as follows:

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                                                                                                      47 CFR 90.529(a)(1)
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           (1) Each state that chooses to take advantage of the spectrum designated as state channels must file
               an application for up to 2.4 megahertz of this spectrum no later than December 31, 2001. For
               purposes of this section, the elected chief executive (Governor) of each state, or his or her designee,
               shall be deemed the person authorized to apply for the State License.

           (2) What ever part of this 2.4 megahertz that a state has not applied for by December 31, 2001, will
               revert to General Use and be administered by the relevant RPC (or RPCs in the instances of states
               that encompass multiple RPCs).

     (b) Each state license will be granted subject to the condition that the state certifies on or before each
         applicable benchmark date that it is:

           (1) Providing or prepared to provide “substantial service” to one-third of their population or territory by
               June 13, 2014, i.e., within five years of the date that incumbent broadcasters are required to relocate
               to other portions of the spectrum;

           (2) Providing or prepared to provide “substantial service” to two-thirds of their population or territory by
               June 13, 2019, i.e., within ten years of the date that incumbent broadcasters are required to relocate
               to other portions of the spectrum.

     (c) The Commission will deem a state “prepared to provide substantial service” if the licensee certifies that a
         radio system has been approved and funded for implementation by the deadline date. “Substantial
         service” refers to the construction and operation of 700 MHz facilities by public safety entities providing
         service which is sound, favorable , and substantially above a level of mediocre service which just might
         minimally warrant renewal.

     (d) If a state licensee fails to meet any condition of the grant the state license is modified automatically to the
         frequencies and geographic areas where the state certifies that it is providing substantial service.

     (e) Any recovered state license spectrum will revert to General Use. However, spectrum licensed to a state
         under a state license remains unavailable for reassignment to other applicants until the Commission's
         database reflects the parameters of the modified state license.

[65 FR 66654, Nov. 7, 2000, as amended at 79 FR 20106, Apr. 11, 2014]

§ 90.531 Band plan.
This section sets forth the band plan for the 758–775 MHz and 788–805 MHz public safety bands.

     (a) Base and mobile use. The 763–775 MHz band may be used for base, mobile or fixed (repeater)
         transmissions. The 793–805 MHz band may be used only for mobile or fixed (control) transmissions.

47 CFR 90.531(a) (enhanced display)                                                                       page 341 of 516
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                                                                                                       47 CFR 90.531(b)
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     (b) Narrowband segments. There are two band segments that are designated for use with narrowband
         emissions. Each of these narrowband segments is divided into 960 channels having a channel size of
         6.25 kHz as follows:

                                Frequency range                                    Channel Nos.
           769–775 MHz                                                                                   1–960
           799–805 MHz                                                                               961–1920

           (1) Narrowband interoperability channels. The following narrowband channels are designated for
               nationwide interoperability licensing and use: 23, 24, 39, 40, 63, 64, 79, 80, 103, 104, 119, 120,143,
               144, 159, 160, 183, 184, 199, 200, 223, 224, 239, 240, 263, 264, 279, 280, 303, 304, 319, 320, 641, 642,
               657, 658, 681, 682, 697, 698, 721, 722, 737, 738, 761, 762, 777, 778, 801, 802, 817, 818, 841, 842, 857,
               858, 881, 882, 897, 898, 921, 922, 937, 938, 983, 984, 999, 1000, 1023, 1024, 1039, 1040, 1063, 1064,
               1079, 1080, 1103, 1104, 1119, 1120, 1143, 1144, 1159, 1160, 1183, 1184, 1199, 1200, 1223, 1224,
               1239, 1240, 1263, 1264, 1279, 1280, 1601, 1602, 1617, 1618, 1641, 1642, 1657, 1658, 1681, 1682,
               1697, 1698, 1721, 1722, 1737, 1738, 1761, 1762, 1777, 1778, 1801, 1802, 1817, 1818, 1841, 1842,
               1857, 1858, 1881, 1882, 1897, 1898.

                 (i)   Narrowband data Interoperability channels. The following channel pairs are reserved nationwide
                       for data transmission on a primary basis: 279/1239, 280/1240, 921/1881, and 922/1882. Voice
                       operations are permitted on these channels on a secondary basis.

                (ii) Narrowband calling Interoperability channels. The following channel pairs are dedicated
                     nationwide for the express purpose of Interoperability calling only: 39/999, 40/1000, 681/1641,
                     and 682/1642. They may not be used primarily for routine, day-to-day communications.
                     Encryption is prohibited on the designated calling channels.

                (iii) Narrowband trunking Interoperability channels. The following Interoperability channel pairs may
                      be used in trunked mode on a secondary basis to conventional Interoperability operations: 23/
                      983, 24/984, 103/1063, 104/1064, 183/1143, 184/1144, 263/1223, 264/1224, 657/1617, 658/
                      1618, 737/1697, 738/1698, 817/1777, 818/1778, 897/1857, 898/1858. For every ten general
                      use channels trunked at a station, entities may obtain a license to operate in the trunked mode
                      on two of the above contiguous Interoperability channel pairs. The maximum number of
                      Interoperability channel pairs that can be trunked at any one location is eight.

           (2) Narrowband General Use Reserve channels. The following narrowband channels are designated for
               General Use subject to Commission approved regional planning committee regional plans and
               technical rules applicable to General Use channels: 37, 38, 61, 62, 77, 78, 117, 118, 141, 142, 157,
               158, 197, 198, 221, 222, 237, 238, 277, 278, 301, 302, 317, 318, 643, 644, 683, 684, 699, 700, 723, 724,
               763, 764, 779, 780, 803, 804, 843, 844, 859, 860, 883, 884, 923, 924, 939, 940, 997, 998, 1021, 1022,
               1037, 1038, 1077, 1078, 1101, 1102, 1117, 1118, 1157, 1158, 1181, 1182, 1197, 1198, 1237, 1238,
               1261, 1262, 1277, 1278, 1603, 1604, 1643, 1644, 1659, 1660, 1683, 1684, 1723, 1724, 1739, 1740,
               1763, 1764, 1803, 1804, 1819, 1820, 1843, 1844, 1883, 1884, 1899, 1900.

                 (i)   T-Band Relocation. The narrowband channels established in paragraph (b)(2) are designated for
                       priority access by public safety incumbents relocating from the 470–512 MHz band in the
                       urban areas specified in §§ 90.303 and 90.305 of the Commission's rules provided that such
                       incumbent commits to return to the Commission an equal amount of T-Band spectrum and
                       obtains concurrence from the relevant regional planning committee(s). Public safety T-Band

47 CFR 90.531(b)(2)(i) (enhanced display)                                                               page 342 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.531(b)(2)(ii)
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                       incumbents shall enjoy priority access for a five year period starting from the date the Public
                       Safety and Homeland Security Bureau releases a public notice announcing the availability of
                       Reserve Channels for licensing.

                 (ii) Deployable Trunked Systems. Outside the urban areas specified in §§ 90.303 and 90.305 of the
                      Commission's rules, the 700 MHz Regional Planning Committees may designate no more than
                      eight 12.5 kilohertz channel pairs for temporary deployable mobile trunked infrastructure
                      (F2BT) that could be transported into an incident area to assist with emergency response and
                      recovery.

                (iii) General Use. Outside the urban areas specified in §§ 90.303 and 90.305 of the Commission's
                      rules, the 700 MHz Regional Planning Committees may designate sixteen to twenty four 12.5
                      kilohertz channel pairs for General Use, including low power vehicular mobile repeaters (MO3).

           (3) Narrowband low power channels subject to regional planning. The following narrowband channels are
               designated for low power use for on-scene incident response purposes using mobiles and portables
               subject to Commission-approved regional planning committee regional plans. Transmitter power
               must not exceed 2 watts (ERP): Channels 1–8 paired with Channels 961–968, and Channels
               949–958 paired with Channels 1909–1918.

           (4) Narrowband low power itinerant channels. The following narrowband channels are designated for low
               power use for on-scene incident response purposes using mobiles and portables. These channels
               are licensed nationwide for itinerant operation. Transmitter power must not exceed 2 watts (ERP):
               Channels 9–12 paired with Channels 969–972 and Channels 959–960 paired with Channels
               1919–1920.

           (5) Narrowband state channels. The following narrowband channels are designated for direct licensing
               to each state (including U.S. territories, districts, and possessions): 25–36, 65–76, 105–116,
               145–156, 185–196, 225–236, 265–276, 305–316, 645–656, 685–696, 725–736, 765–776, 805–816,
               845–856, 885–896, 925–936, 985–996, 1025–1036, 1065–1076, 1105–1116, 1145–1156,
               1185–1196, 1225–1236, 1265–1276, 1605–1616, 1645–1656, 1685–1696, 1725–1736, 1765–1776,
               1805–1816, 1845–1856, 1885–1896. Voice operations on these channels are subject to compliance
               with the spectrum usage efficiency requirements set forth in § 90.535(d).

           (6) Narrowband general use channels. All narrowband channels established in this paragraph (b), other
               than those listed in paragraphs (b)(1), (b)(4), (b)(5), and (b)(7) of this section are reserved to public
               safety eligibles subject to Commission approved regional planning committee regional plans. Voice
               operations on these channels are subject to compliance with the spectrum usage efficiency
               requirements set forth in § 90.535(d).

           (7) Air-ground channels. The following channels are reserved for air-ground communications to be used
               by low-altitude aircraft and ground based stations: 21/981, 22/982, 101/1061, 102/1062, 181/1141,
               182/1142, 261/1221, 262/1222, 659/1619, 660/1620, 739/1699, 740/1700, 819/1779, 820/1780,
               899/1859, and 900/1860.

                 (i)   Airborne use of these channels is limited to aircraft flying at or below 457 meters (1500 feet)
                       above ground level.

                 (ii) Aircraft are limited to 2 watts effective radiated power (ERP) when transmitting while airborne
                      on these channels.

                (iii) Aircraft may transmit on either the mobile or base transmit side of the channel pair.

47 CFR 90.531(b)(7)(iii) (enhanced display)                                                                page 343 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.531(b)(7)(iv)
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                (iv) States are responsible for the administration of these channels.

     (c) [Reserved]

     (d) Combining channels. Except as noted in this section, at the discretion of the appropriate regional planning
         committee, contiguous channels may be used in combination in order to accommodate requirements for
         larger bandwidth emissions, in accordance with this paragraph. Interoperability channels may not be
         combined with channels in another group except for channels for secondary trunking channels.

           (1) Narrowband. Subject to compliance with the spectrum usage efficiency requirements set forth in §
               90.535, two or four contiguous narrowband (6.25 kHz) channels may be used in combination as 12.5
               kHz or 25 kHz channels, respectively. The lower (in frequency) channel for two channel
               combinations must be an odd (i.e., 1, 3, 5 * * *) numbered channel. The lowest (in frequency) channel
               for four channel combinations must be a channel whose number is equal to 1 + (4xn), where n = any
               integer between 0 and 479, inclusive (e.g., channel number 1, 5, * * * 1917). Channel combinations
               are designated by the lowest and highest channel numbers separated by a hyphen, e.g., “1–2” for a
               two channel combination and “1–4” for a four channel combination.

           (2) [Reserved]

     (e) Channel pairing. In general, channels must be planned and assigned in base/mobile pairs that are
         separated by 30 MHz. However, until December 31, 2006, channels other than those listed in paragraphs
         (b)(1) and (c)(1), may be planned and assigned in base/mobile pairs having a different separation, where
         necessary because 30 MHz base/mobile pairing is precluded by the presence of one or more co-channel
         or adjacent channel TV/DTV broadcast stations.

     (f) Internal guard band. The internal guard band (768–769/798–799 MHz) is reserved.

     (g) Broadband. The 758–768 MHz and 788–798 MHz bands are allocated for broadband communications.

[63 FR 58651, Nov. 2, 1998, as amended at 65 FR 66654, Nov. 7, 2000; 66 FR 10635, 10636, Feb. 16, 2001; 67 FR 61005, Sept. 27,
2002; 67 FR 76700, Dec. 13, 2002; 72 FR 48860, Aug. 24, 2007; 77 FR 62463, Oct. 15, 2012; 79 FR 71325, Dec. 2, 2014]

§ 90.532 Licensing of the 758–769 MHz and 788–799 MHz bands; first responder network
authority license and renewal.
Pursuant to Section 6201 of the Middle Class Tax Relief and Job Creation Act of 2012, Public Law 112–96, 126 Stat.
156 (2012), a nationwide license for use of the 758–769 MHz and 788–799 MHz bands shall be issued to the First
Responder Network Authority for an initial license term of ten years from the date of the initial issuance of the
license. Prior to expiration of the term of such initial license, the First Responder Network Authority shall submit to
the Commission an application for the renewal of such license. Such renewal application shall demonstrate that,
during the preceding license term, the First Responder Network Authority has met the duties and obligations set
forth under the foregoing Act. A renewal license shall be for a term not to exceed ten years.

[86 FR 70750, Dec. 13, 2021]

§ 90.533 Transmitting sites near the U.S./Canada or U.S./Mexico border.
This section applies to each license to operate one or more public safety transmitters in the 758–775 MHz and
788–805 MHz bands, at a location or locations North of Line A (see § 90.7) or within 120 kilometers (75 miles) of
the U.S.-Mexico border, until such time as agreements between the government of the United States and the

47 CFR 90.533 (enhanced display)                                                                               page 344 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.533(a)
Private Land Mobile Radio Services

government of Canada or the government of the United States and the government of Mexico, as applicable,
become effective governing border area non-broadcast use of these bands. Public safety licenses are granted
subject to the following conditions:

     (a) Public safety transmitters operating in the 758–775 MHz and 788–805 MHz bands must conform to the
         limitations on interference to Canadian television stations contained in agreement(s) between the United
         States and Canada for use of television channels in the border area.

     (b) Public safety facilities must accept any interference that may be caused by operations of UHF television
         broadcast transmitters in Canada and Mexico.

     (c) Conditions may be added during the term of the license, if required by the terms of international
         agreements between the government of the United States and the government of Canada or the
         government of the United States and the government of Mexico, as applicable, regarding non-broadcast
         use of the 758–775 MHz and 788–805 MHz bands.

[43 FR 54791, Nov. 22, 1978, as amended at 67 FR 76700, Dec. 13, 2002; 72 FR 48861, Aug. 24, 2007; 79 FR 600, Jan. 6, 2014]

§ 90.535 Modulation and spectrum usage efficiency requirements.
Transmitters designed to operate in 769–775 MHz and 799–805 MHz frequency bands must meet the following
modulation standards:

     (a) All transmitters in the 769–775 MHz and 799–805 MHz frequency bands must use digital modulation.
         Mobile and portable transmitters may have analog modulation capability only as a secondary mode in
         addition to its primary digital mode except on the interoperability channels listed in § 90.531(b)(1). Analog
         modulation is prohibited on the interoperability channels. Mobile and portable transmitters that only
         operate on the low power channels designated in § 90.531(b)(3) and (4) are exempt from this digital
         modulation requirement.

     (b) Transmitters designed to operate in the narrowband segment using digital modulation must be capable of
         maintaining a minimum data (non-voice) rate of 4.8 kbps per 6.25 kHz of bandwidth.

     (c) Transmitters designed to operate in the wideband segment using digital modulation must be capable of
         maintaining a minimum data (non-voice) rate of 384 kbps per 150 kHz of bandwidth.

     (d) Transmitters designed to operate on the channels listed in paragraphs (b)(2), (5), (6), and (7) of § 90.531
         must be capable of operating in the voice mode at an efficiency of at least one voice path per 12.5 kHz of
         spectrum bandwidth.

[63 FR 58651, Nov. 2, 1998, as amended at 65 FR 53645, Sept. 5, 2000; 65 FR 66655, Nov. 7, 2000; 67 FR 76701, Dec. 13, 2002; 70
FR 21673, Apr. 27, 2005; 72 FR 48861, Aug. 24, 2007; 79 FR 71326, Dec. 2, 2014; 81 FR 66833, Sept. 29, 2016]

§ 90.537 Trunking requirement.
     (a) General use and State License channels. All fixed transmitter sites using six or more narrowband channels
         in the 769–775 MHz and 799–805 MHz frequency bands must be trunked, except for those described in
         paragraph (b) of this section. This paragraph does not apply to Vehicular Repeater Systems (MO3)
         authorized on the General Use and State License channels listed in § 90.531(b).

47 CFR 90.537(a) (enhanced display)                                                                             page 345 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.537(b)
Private Land Mobile Radio Services

     (b) Interoperability and low power channels. Trunking is permitted only on Interoperability channels specified
         in § 90.531(b)(1)(iii). Trunked use must be strictly on a secondary, non-interference basis to conventional
         operations. The licensee must monitor and immediately release these channels when they are needed for
         interoperability purposes. All systems using narrowband low power channels listed in § 90.531(b)(3) and
         (4) are exempt from the trunking requirements described in paragraph (a) of this section.

[79 FR 39340, July 10, 2014, as amended at 83 FR 30367, June 28, 2018]

§ 90.539 Frequency stability.
Transmitters designed to operate in 769–775 MHz and 799–805 MHz frequency bands must meet the frequency
stability requirements in this section.

     (a) Mobile, portable and control transmitters must normally use automatic frequency control (AFC) to lock on
         to the base station signal.

     (b) The frequency stability of base transmitters operating in the narrowband segment must be 100 parts per
         billion or better.

     (c) The frequency stability of mobile, portable, and control transmitters operating in the narrowband segment
         must be 400 parts per billion or better when AFC is locked to the base station. When AFC is not locked to
         the base station, the frequency stability must be at least 1.0 ppm for 6.25 kHz, 1.5 ppm for 12.5 kHz (2
         channel aggregate), and 2.5 ppm for 25 kHz (4 channel aggregate).

     (d) The frequency stability of base transmitters operating in the wideband segment must be 1 part per million
         or better.

     (e) The frequency stability of mobile, portable and control transmitters operating in the wideband segment
         must be 1.25 parts per million or better when AFC is locked to a base station, and 5 parts per million or
         better when AFC is not locked.

[63 FR 58651, Nov. 2, 1998, as amended at 65 FR 53646, Sept. 5, 2000; 72 FR 48861, Aug. 24, 2007]

§ 90.541 Transmitting power and antenna height limits.
The transmitting power and antenna height of base, mobile, portable and control stations operating in the 769–775
MHz and 799–805 MHz frequency bands must not exceed the maximum limits in this section. Power limits are
listed in effective radiated power (ERP).

     (a) The transmitting power and antenna height of base stations must not exceed the limits given in paragraph
         (a) of § 90.635.

     (b) The transmitting power of a control station must not exceed 200 watts ERP.

     (c) The transmitting power of a mobile unit must not exceed 100 watts ERP.

     (d) The transmitting power of a portable (hand-held) unit must not exceed 3 watts ERP.

     (e) Transmitters operating on the narrowband low power channels listed in § 90.531(b)(3) and (4), must not
         exceed 2 watts ERP.

[79 FR 71326, Dec. 2, 2014]

47 CFR 90.541(e) (enhanced display)                                                                    page 346 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.542
Private Land Mobile Radio Services

§ 90.542 Broadband transmitting power limits.
     (a) The following power limits apply to the 758–768/788–798 MHz band:

           (1) Fixed and base stations transmitting a signal in the 758–768 MHz band with an emission bandwidth
               of 1 MHz or less must not exceed an ERP of 1000 watts and an antenna height of 305 m HAAT,
               except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced
               below 1000 watts ERP in accordance with Table 1 of this section.

           (2) Fixed and base stations located in a county with population density of 100 or fewer persons per
               square mile, based upon the most recently available population statistics from the Bureau of the
               Census, and transmitting a signal in the 758–768 MHz band with an emission bandwidth of 1 MHz
               or less must not exceed an ERP of 2000 watts and an antenna height of 305 m HAAT, except that
               antenna heights greater than 305 m HAAT are permitted if power levels are reduced below 2000
               watts ERP in accordance with Table 2 of this section.

           (3) Fixed and base stations transmitting a signal in the 758–768 MHz band with an emission bandwidth
               greater than 1 MHz must not exceed an ERP of 1000 watts/MHz and an antenna height of 305 m
               HAAT, except that antenna heights greater than 305 m HAAT are permitted if power levels are
               reduced below 1000 watts/MHz ERP accordance with Table 3 of this section.

           (4) Fixed and base stations located in a county with population density of 100 or fewer persons per
               square mile, based upon the most recently available population statistics from the Bureau of the
               Census, and transmitting a signal in the 758–768 MHz band with an emission bandwidth greater
               than 1 MHz must not exceed an ERP of 2000 watts/MHz and an antenna height of 305 m HAAT,
               except that antenna heights greater than 305 m HAAT are permitted if power levels are reduced
               below 2000 watts/MHz ERP in accordance with Table 4 of this section.

           (5) Licensees of fixed or base stations transmitting a signal in the 758–768 MHz band at an ERP greater
               than 1000 watts must comply with the provisions set forth in paragraph (b) of this section.

           (6) Control stations and mobile stations transmitting in the 758–768 MHz band and the 788–798 MHz
               band are limited to 30 watts ERP.

           (7) Portable stations (hand-held devices) transmitting in the 758–768 MHz band and the 788–798 MHz
               band are limited to 3 watts ERP.

           (8) For transmissions in the 758–768 MHz and 788–798 MHz bands, licensees may employ equipment
               operating in compliance with either of the following measurement techniques:

                 (i)   The maximum composite transmit power shall be measured over any interval of continuous
                       transmission using instrumentation calibrated in terms of RMS-equivalent voltage. The
                       measurement results shall be properly adjusted for any instrument limitations, such as detector
                       response times, limited resolution bandwidth capability when compared to the emission
                       bandwidth, etc., so as to obtain a true maximum composite measurement for the emission in
                       question over the full bandwidth of the channel.

                (ii) A Commission-approved average power technique.

47 CFR 90.542(a)(8)(ii) (enhanced display)                                                              page 347 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                          47 CFR 90.542(a)(8)(ii)
Private Land Mobile Radio Services

                       Table 1 to § 90.542(a)—Permissible Power and Antenna Heights for Base
                       and Fixed Stations in the 758–768 MHz Band Transmitting a Signal With
                                       an Emission Bandwidth of 1 MHz or Less

                                 Antenna height (AAT) in meters          Effective radiated power (ERP)
                                             (feet)                                  (watts)
                       Above 1372 (4500)                                                                     65
                       Above 1220 (4000) To 1372 (4500)                                                      70
                       Above 1067 (3500) To 1220 (4000)                                                      75
                       Above 915 (3000) To 1067 (3500)                                                      100
                       Above 763 (2500) To 915 (3000)                                                       140
                       Above 610 (2000) To 763 (2500)                                                       200
                       Above 458 (1500) To 610 (2000)                                                       350
                       Above 305 (1000) To 458 (1500)                                                       600
                       Up to 305 (1000)                                                                    1000

                       Table 2 to § 90.542(a)—Permissible Power and Antenna Heights for Base
                       and Fixed Stations in the 758–768 MHz Band Transmitting a Signal With
                                       an Emission Bandwidth of 1 MHz or Less

                                 Antenna height (AAT) in meters          Effective radiated power (ERP)
                                             (feet)                                  (watts)
                       Above 1372 (4500)                                                                    130
                       Above 1220 (4000) To 1372 (4500)                                                     140
                       Above 1067 (3500) To 1220 (4000)                                                     150
                       Above 915 (3000) To 1067 (3500)                                                      200
                       Above 763 (2500) To 915 (3000)                                                       280
                       Above 610 (2000) To 763 (2500)                                                       400
                       Above 458 (1500) To 610 (2000)                                                       700
                       Above 305 (1000) To 458 (1500)                                                      1200
                       Up to 305 (1000)                                                                    2000

                       Table 3 to § 90.542(a)—Permissible Power and Antenna Heights for Base
                       and Fixed Stations in the 758–768 MHz Band Transmitting a Signal With
                                      an Emission Bandwidth Greater Than 1 MHz

                              Antenna height (AAT) in meters      Effective radiated power (ERP) per MHz
                                          (feet)                                (watts/MHz)
                       Above 1372 (4500)                                                                     65
                       Above 1220 (4000) To 1372 (4500)                                                      70
                       Above 1067 (3500) To 1220 (4000)                                                      75

47 CFR 90.542(a)(8)(ii) (enhanced display)                                                      page 348 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.542(b)
Private Land Mobile Radio Services

                              Antenna height (AAT) in meters             Effective radiated power (ERP) per MHz
                                          (feet)                                       (watts/MHz)
                       Above 915 (3000) To 1067 (3500)                                                             100
                       Above 763 (2500) To 915 (3000)                                                              140
                       Above 610 (2000) To 763 (2500)                                                              200
                       Above 458 (1500) To 610 (2000)                                                              350
                       Above 305 (1000) To 458 (1500)                                                              600
                       Up to 305 (1000)                                                                           1000

                       Table 4 to § 90.542(a)—Permissible Power and Antenna Heights for Base
                       and Fixed Stations in the 758–768 MHz Band Transmitting a Signal With
                                      an Emission Bandwidth Greater Than 1 MHz

                              Antenna height (AAT) in meters             Effective radiated power (ERP) per MHz
                                          (feet)                                       (watts/MHz)
                       Above 1372 (4500)                                                                           130
                       Above 1220 (4000) To 1372 (4500)                                                            140
                       Above 1067 (3500) To 1220 (4000)                                                            150
                       Above 915 (3000) To 1067 (3500)                                                             200
                       Above 763 (2500) To 915 (3000)                                                              280
                       Above 610 (2000) To 763 (2500)                                                              400
                       Above 458 (1500) To 610 (2000)                                                              700
                       Above 305 (1000) To 458 (1500)                                                             1200
                       Up to 305 (1000)                                                                           2000

     (b) For base and fixed stations operating in the 758–768 MHz band in accordance with the provisions of
         paragraph (a)(5) of this section, the power flux density that would be produced by such stations through a
         combination of antenna height and vertical gain pattern must not exceed 3000 microwatts per square
         meter on the ground over the area extending to 1 km from the base of the antenna mounting structure.

[72 FR 48861, Aug. 24, 2007, as amended at 79 FR 600, Jan. 6, 2014]

§ 90.543 Emission limitations.
Transmitters designed to operate in 769–775 MHz and 799–805 MHz frequency bands must meet the emission
limitations in paragraphs (a) through (d) of this section. Class A and Class B signal boosters retransmitting signals
in the 769–775 MHz and 799–805 MHz frequency bands are exempt from the limits listed in paragraph (a) of this
section when simultaneously retransmitting multiple signals and instead shall be subject to the limit listed in
paragraph (c) of this section when operating in this manner. Transmitters operating in 758–768 MHz and 788–798
MHz bands must meet the emission limitations in (e) of this section.

47 CFR 90.543 (enhanced display)                                                                        page 349 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.543(a)
Private Land Mobile Radio Services

     (a) The adjacent channel power (ACP) requirements for transmitters designed for various channel sizes are
         shown in the following tables. Mobile station requirements apply to handheld, car mounted and control
         station units. The tables specify a value for the ACP as a function of the displacement from the channel
         center frequency and measurement bandwidth. In the following tables, “(s)” indicates a swept
         measurement may be used.

47 CFR 90.543(a) (enhanced display)                                                                  page 350 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                      47 CFR 90.543(a)
Private Land Mobile Radio Services

                               6.25 kHz Mobile Transmitter ACP Requirements

                      Offset from center
                                               Measurement bandwidth   Maximum ACP relative
                          frequency
                                                      (kHz)                  (dBc)
                             (kHz)
           6.25                                        6.25                    −40
           12.5                                        6.25                    −60
           18.75                                       6.25                    −60
           25.00                                       6.25                    −65
           37.50                                       25.00                   −65
           62.50                                       25.00                   −65
           87.50                                       25.00                   −65
           150.00                                     100.00                   −65
           250.00                                     100.00                   −65
           350.00                                     100.00                   −65
           >400 kHz to 12 MHz                          30 (s)                  −75
           12 MHz to paired receive band               30 (s)                  −75
           In the paired receive band                  30 (s)                 −100

                               12.5 kHz Mobile Transmitter ACP Requirements

                      Offset from center
                                               Measurement bandwidth   Maximum ACP relative
                          frequency
                                                      (kHz)                  (dBc)
                             (kHz)
           9.375                                       6.25                    −40
           15.625                                      6.25                    −60
           21.875                                      6.25                    −60
           37.50                                       25.00                   −60
           62.50                                       25.00                   −65
           87.50                                       25.00                   −65
           150.00                                       100                    −65
           250.00                                       100                    −65
           350.00                                       100                    −65
           >400 to 12 MHz                              30 (s)                  −75
           12 MHz to paired receive band               30 (s)                  −75
           In the paired receive band                  30 (s)                 −100

47 CFR 90.543(a) (enhanced display)                                                     page 351 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.543(a)
Private Land Mobile Radio Services

                                25 kHz Mobile Transmitter ACP Requirements

                      Offset from center
                                                    Measurement bandwidth          Maximum ACP relative
                          frequency
                                                           (kHz)                         (dBc)
                             (kHz)
           15.625                                             6.25                          −40
           21.875                                             6.25                          −60
           37.50                                              25                            −60
           62.50                                              25                            −65
           87.50                                              25                            −65
           150.00                                             100                           −65
           250.00                                             100                           −65
           350.00                                             100                           −65
           >400 kHz to 12 MHz                                30 (s)                         −75
           12 MHz to paired receive band                     30 (s)                         −75
           In the paired receive band                        30 (s)                         −100

                                6.25 kHz Base Transmitter ACP Requirements

                        Offset from center
                                                          Measurement bandwidth            Maximum ACP
                            frequency
                                                                 (kHz)                         (dBc)
                               (kHz)
           6.25                                                       6.25                        −40
           12.50                                                      6.25                        −60
           18.75                                                      6.25                        −60
           25.00                                                      6.25                        −65
           37.50                                                       25                         −65
           62.50                                                       25                         −65
           87.50                                                       25                         −65
           150.00                                                      100                        −65
           250.00                                                      100                        −65
           350.00                                                      100                        −65
           >400 to 12 MHz                                             30 (s)                      −80
           12 MHz to paired receive band                              30 (s)                      −80
           In the paired receive band                                 30 (s)                   1   –85

           1 Although we permit individual base transmitters to radiate a maximum ACP of −85 dBc in the
           paired receive band, licensees deploying these transmitters may not exceed an ACP of −100 dBc in
           the paired receive band when measured at either the transmitting antenna input port or the output
           of the transmitter combining network. Consequently, licensees deploying these transmitters may
           need to use external filters to comply with the more restrictive ACP limit.

47 CFR 90.543(a) (enhanced display)                                                                      page 352 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.543(a)
Private Land Mobile Radio Services

                                12.5 kHz Base Transmitter ACP Requirements

                        Offset from center
                                                          Measurement bandwidth            Maximum ACP
                            frequency
                                                                 (kHz)                         (dBc)
                               (kHz)
           9.375                                                   6.25                         −40
           15.625                                                  6.25                         −60
           21.875                                                  6.25                         −60
           37.5                                                     25                          −60
           62.5                                                     25                          −65
           87.5                                                     25                          −65
           150                                                      100                         −65
           250                                                      100                         −65
           350.00                                                   100                         −65
           >400 kHz to 12 MHz                                      30 (s)                       −80
           12 MHz to paired receive band                           30 (s)                       −80
                                                                                               1
           In the paired receive band                              30 (s)                          –85

           1 Although we permit individual base transmitters to radiate a maximum ACP of −85 dBc in the
           paired receive band, licensees deploying these transmitters may not exceed an ACP of −100 dBc in
           the paired receive band when measured at either the transmitting antenna input port or the output
           of the transmitter combining network. Consequently, licensees deploying these transmitters may
           need to use external filters to comply with the more restrictive ACP limit.

47 CFR 90.543(a) (enhanced display)                                                                      page 353 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.543(b)
Private Land Mobile Radio Services

                        25 kHz Base Transmitter ACP Requirements

               Offset from center
                                                  Measurement bandwidth             Maximum ACP
                   frequency
                                                         (kHz)                          (dBc)
                      (kHz)
 15.625                                                     6.25                         −40
 21.875                                                     6.25                         −60
 37.5                                                        25                          −60
 62.5                                                        25                          −65
 87.5                                                        25                          −65
 150                                                        100                          −65
 250                                                        100                          −65
 350                                                       100.00                        −65
 >400 kHz to 12 MHz                                        30 (s)                        −80
 12 MHz to paired receive band                             30 (s)                        −80
 In the paired receive band                                30 (s)                       1   –85

1 Although we permit individual base transmitters to radiate a maximum ACP of −85 dBc in the
paired receive band, licensees deploying these transmitters may not exceed an ACP of −100 dBc in
the paired receive band when measured at either the transmitting antenna input port or the output
of the transmitter combining network. Consequently, licensees deploying these transmitters may
need to use external filters to comply with the more restrictive ACP limit.

        (b) ACP measurement procedure. The following are the procedures for making the transmitter ACP
            measurements. For all measurements modulate the transmitter as it would be modulated in normal
            operating conditions. For time division multiple access (TDMA) systems, the measurements are to be
            made under TDMA operation only during time slots when the transmitter is active. All measurements are
            made at the transmitter's output port. If a transmitter has an integral antenna, a suitable power coupling
            device shall be used to couple the RF signal to the measurement instrument. The coupling device shall
            substantially maintain the proper transmitter load impedance. The ACP measurements may be made with
            a spectrum analyzer capable of making direct ACP measurements. “Measurement bandwidth”, as used
            for non-swept measurements, implies an instrument that measures the power in many narrow
            bandwidths equal to the nominal resolution bandwidth and integrates these powers to determine the total
            power in the specified measurement bandwidth.

             (1) Setting reference level. Set transmitter to maximum output power. Using a spectrum analyzer
                 capable of ACP measurements, set the measurement bandwidth to the channel size. For example,
                 for a 6.25 kHz transmitter set the measurement bandwidth to 6.25 kHz. Set the frequency offset of
                 the measurement bandwidth to zero and adjust the center frequency of the instrument to the
                 assigned center frequency to measure the average power level of the transmitter. Record this power
                 level in dBm as the “reference power level.”

             (2) Non-swept power measurement. Using a spectrum analyzer capable of ACP measurements, set the
                 mesurement bandwidth and frequency offset from the assigned center frequency as shown in the
                 tables in § 90.543 (a) above. Any value of resolution bandwidth may be used as long as it does not
                 exceed 2 percent of the specified measurement bandwidth. Measure the power level in dBm. These

47 CFR 90.543(b)(2) (enhanced display)                                                                  page 354 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.543(b)(3)
Private Land Mobile Radio Services

                measurements should be made at maximum power. Calculate ACP by substracting the reference
                power level measured in (b)(1) from the measurements made in this step. The absolute value of the
                calculated ACP must be greater than or equal to the absolute value of the ACP given in the table for
                each condition above.

           (3) Swept power measurement. Set a spectrum analyzer to 30 kHz resolution bandwidth, 1 MHz video
               bandwidth and average, sample, or RMS detection. Set the reference level of the spectrum analyzer
               to the RMS value of the transmitter power. Sweep above and below the carrier frequency to the limits
               defined in the tables. Calculate ACP by substracting the reference power level measured in (b)(1)
               from the measurements made in this step. The absolute value of the calculated ACP must be greater
               than or equal to the absolute value of the ACP given in the table for each condition above.

     (c) Out-of-band emission limit. On any frequency outside of the frequency ranges covered by the ACP tables
         in this section, the power of any emission must be reduced below the mean output power (P) by at least
         43 + 10log (P) dB measured in a 100 kHz bandwidth for frequencies less than 1 GHz, and in a 1 MHz
         bandwidth for frequencies greater than 1 GHz.

     (d) Authorized bandwidth. Provided that the ACP requirements of this section are met, applicants may request
         any authorized bandwidth that does not exceed the channel size.

     (e) For operations in the 758–768 MHz and the 788–798 MHz bands, the power of any emission outside the
         licensee's frequency band(s) of operation shall be attenuated below the transmitter power (P) within the
         licensed band(s) of operation, measured in watts, in accordance with the following:

           (1) On all frequencies between 769–775 MHz and 799–805 MHz, by a factor not less than 76 + 10 log
               (P) dB in a 6.25 kHz band segment, for base and fixed stations.

           (2) On all frequencies between 769–775 MHz and 799–805 MHz, by a factor not less than 65 + 10 log
               (P) dB in a 6.25 kHz band segment, for mobile and portable stations.

           (3) On any frequency between 775–788 MHz, above 805 MHz, and below 758 MHz, by at least 43 + 10
               log (P) dB.

           (4) Compliance with the provisions of paragraphs (e)(1) and (2) of this section is based on the use of
               measurement instrumentation such that the reading taken with any resolution bandwidth setting
               should be adjusted to indicate spectral energy in a 6.25 kHz segment.

           (5) Compliance with the provisions of paragraph (e)(3) of this section is based on the use of
               measurement instrumentation employing a resolution bandwidth of 100 kHz or greater. However, in
               the 100 kHz bands immediately outside and adjacent to the frequency block, a resolution bandwidth
               of 30 kHz may be employed.

     (f) For operations in the 758–775 MHz and 788–805 MHz bands, all emissions including harmonics in the
         band 1559–1610 MHz shall be limited to −70 dBW/MHz equivalent isotropically radiated power (EIRP) for
         wideband signals, and −80 dBW EIRP for discrete emissions of less than 700 Hz bandwidth. For the
         purpose of equipment authorization, a transmitter shall be tested with an antenna that is representative of
         the type that will be used with the equipment in normal operation.

     (g) When an emission outside of the authorized bandwidth causes harmful interference, the Commission
         may, at its discretion, require greater attenuation than specified in this section.

[70 FR 21666, Apr. 27, 2005, as amended at 72 FR 48862, Aug. 24, 2007; 79 FR 600, Jan. 6, 2014; 79 FR 39340, July 10, 2014; 79
FR 71326, Dec. 2, 2014]

47 CFR 90.543(g) (enhanced display)                                                                             page 355 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.547
Private Land Mobile Radio Services

§ 90.547 Narrowband Interoperability channel capability requirement.
     (a) Except as noted in this section, mobile and portable transmitters operating on narrowband channels in the
         769–775 MHz and 799–805 MHz frequency bands must be capable of operating on all of the designated
         nationwide narrowband Interoperability channels pursuant to the standards specified in this part.
         Provided, however, that the licensee need not program such transmitters to make all interoperability
         channels accessible to the end user.

           (1) Mobile and portable transmitters that are designed to operate only on the Low Power Channels
               specified in § 90.531 (b)(3) and (4) are exempt from this Interoperability channel requirement.

           (2) Mobile and portable transmitters that are designed to operate only in the data mode must be capable
               of operation on the data Interoperability channels specified in § 90.531(b)(1)(i); but need not be
               capable of voice operation on other Interoperability channels.

           (3) Mobile and portable transmitters that are designed to operate only in the voice mode do not have to
               operate on the data Interoperability channels specified in § 90.531(b)(1)(i).

     (b) Mobile and portable transmitters designed for data are not required to be voice capable, and vice versa.

[67 FR 61005, Sept. 27, 2002, as amended at 72 FR 48863, Aug. 24, 2007; 79 FR 71326, Dec. 2, 2014; 83 FR 30367, June 28, 2018]

§ 90.548 Interoperability Technical Standards.
     (a) Transmitters designed after August 11, 2014 to operate on the narrowband interoperability achannels in
         the 769–775 and 799–805 MHz band (see § 90.531) shall conform to the following technical standards
         (transmitters certified prior to this date are grandfathered):

           (1) Transmitters designed for voice operation shall include a 12.5 kilohertz bandwidth mode of
               operation conforming to the following standards: ANSI/TIA–102.BAAA–A–2003 and ANSI/
               TIA–102.BABA–2003.

           (2) Transmitters designed for data transmission shall include a 12.5 kilohertz bandwidth mode of
               operation conforming to the following standards: ANSI/TIA–102.BAEA–B–2012, ANSI/
               TIA–102.BAAA–A–2003, ANSI/TIA–102.BAEB–A–2005, and ANSI/TIA–102.BAEE–B–2010.

     (b) Incorporation by reference. The material listed in this paragraph (b) is incorporated by reference in this
         section with the approval of the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1
         CFR part 51. All approved incorporation by reference (IBR) material is available for inspection at the FCC
         and the National Archives and Records Administration (NARA). Contact the FCC through the Federal
         Communications Commission's Reference Information Center, phone: (202) 418–0270. For information
         on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations.html or
         email fr.inspection@nara.gov. The material may be obtained from the following source in this paragraph
         (b):

           (1) TIA/EIA, 2500 Wilson Boulevard, Arlington, VA 22201 703–907–7974. These standards are also
               available from Global Engineering Documents, 15 Inverness Way East, Englewood, CO 80112; or the
               American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036,
               www.ansi.org.

                 (i)   ANSI/TIA–102.BAAA–A–2003, Project 25 FDMA–Common Air Interface, approved September
                       2003.

47 CFR 90.548(b)(1)(i) (enhanced display)                                                                      page 356 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                47 CFR 90.548(b)(1)(ii)
Private Land Mobile Radio Services

                (ii) ANSI/TIA–102.BABA–2003, Project 25 Vocoder Description, approved December 2003.

                (iii) ANSI/TIA–102.BAEA–B–2012, Project 25 Data Overview—New Technology Standards
                      Project—Digital Radio Technical Standards, approved June 2012.

                (iv) ANSI/TIA–102.BAEB–A–2005, Project 25 Packet Data Specification—New Technology
                     Standards Project—Digital Radio Technical Standards, approved March 2005.

                (v) ANSI/TIA–102.BAEE–B–2010, Project 25 Radio Management Protocols—New Technology
                    Standards Project—Digital Radio Technical Standards, approved May 2010.

           (2) [Reserved]

     (c) Transceivers capable of operating on the narrowband Interoperability channels listed in § 90.531(b)(1)
         shall not be marketed or sold unless the transceiver has previously been certified for interoperability by
         the Compliance Assessment Program (CAP) administered by the U.S. Department of Homeland Security;
         provided, however, that this requirement is suspended if the CAP is discontinued. Submission of a 700
         MHz narrowband radio for certification will constitute a representation by the manufacturer that the radio
         will be shown, by testing, to be interoperable across vendors before it is marketed or sold. In the
         alternative, manufacturers may employ their own protocol for verifying compliance with Project 25
         standards and determining that their product is interoperable among vendors. In the event that field
         experience reveals that a transceiver is not interoperable, the Commission may require the manufacturer
         thereof to provide evidence of compliance with this section.

     (d) Transceivers capable of conventional operations on the narrowband Interoperability channels listed in §
         90.531(b)(1) must, at a minimum, include the following feature sets and capabilities while operating in the
         conventional mode to be validated for compliance with the Project 25 standards consistent with §
         2.1033(c)(20) of this chapter and paragraph (c) of this section.

           (1) A subscriber unit must be capable of issuing group calls in a conventional system in conformance
               with the following standards: TIA 102.BAAD–B Conventional Procedures (2015), Section 6.1 with
               validation testing according to TIA–102.CABA Interoperability Testing for Voice Operation in
               Conventional Systems (2010), Test Case 2.2.2.4.1, and Test Case 2.4.2.4.1.

           (2) Two Project 25 standard squelch modes, Monitor Squelch and Normal Squelch, must be supported
               in conformance with the following standards: TIA 102.BAAD–B Conventional Procedures (2015),
               Section 6.1.1.3 with validation testing according to TIA–102.CABA Conventional Interoperability
               Testing for Voice Operation in Conventional Systems (2010), Test Case 2.2.3.4.1, Test Case 2.2.1.4.1
               (Direct, normal squelch), Test Case 2.4.9.4.1 (Repeated, monitor squelch), and Test Case 2.4.1.4.1
               (Repeated, normal squelch).

           (3) A subscriber unit must properly implement conventional network access codes values (NAC) of $293
               and $F7E in conformance with the following standards: TIA–102.BAAC–C Common Air Interface
               Reserved Values (2011), Section 2.1 with validation testing according to TIA–102.CABA
               Interoperability Testing for Voice Operation in Conventional Systems (2010), Test Case 2.2.1.4.1 and
               Test Case 2.2.8.4.1.

           (4) A fixed conventional repeater must be able to repeat the correct/matching network access code
               (NAC) for all subscriber call types (clear and encrypted) using the same output NAC in conformance
               with the following standards: TIA 102.BAAD–B Conventional Procedures (2015), Section 2.5 with
               validation testing according to TIA–102.CABA Interoperability Testing for Voice Operation in
               Conventional Systems (2010), Test Case 2.4.1.4.1, and Test Case 2.4.2.4.1.

47 CFR 90.548(d)(4) (enhanced display)                                                                 page 357 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.548(d)(5)
Private Land Mobile Radio Services

           (5) A fixed conventional repeater must be able to repeat the correct/matching network access code
               (NAC) for all subscriber call types (clear and encrypted) using a different output NAC in
               conformance with the following standards: TIA 102.BAAD–B Conventional Procedures (2015),
               Section 2.5 with validation testing according to TIA–102.CABA Interoperability Testing for Voice
               Operation in Conventional Systems (2010), Test Case 2.4.3.4.1 and Test Case 2.4.4.4.1.

           (6) A fixed conventional repeater must be able to reject (no repeat) all input transmissions with incorrect
               network access code (NAC) in conformance with the following standard: TIA 102.BAAD–B
               Conventional Procedures (2015), Section 2.5 with validation testing according to TIA–102.CABA
               Interoperability Testing for Voice Operation in Conventional Systems (2010), Test Case 2.4.1.4.1, and
               Test Case 2.4.2.4.1.

           (7) A fixed conventional repeater must be able to support the correct implementation of network access
               code (NAC) values $F7E and $F7F in conformance with the following standards: TIA 102.BAAD–B
               Conventional Procedures (2015), Section 2.5 with validation testing according to TIA–102.CABA
               Interoperability Testing for Voice Operation in Conventional Systems (2010), Test Case 2.4.5.4.1,
               Test Case 2.4.6.4.1, and Test Case 2.4.7.4.1.

[79 FR 39340, July 10, 2014, as amended at 79 FR 71326, Dec. 2, 2014; 83 FR 30367, June 28, 2018; 85 FR 64410, Oct. 13, 2020;
88 FR 21450, Apr. 10, 2023]

§ 90.549 Transmitter certification.
Transmitters operated in the 758–775 MHz and 788–805 MHz frequency bands must be of a type that have been
authorized by the Commission under its certification procedure as required by § 90.203.

[79 FR 600, Jan. 6, 2014]

§ 90.551 Construction requirements.
Each station authorized under this subpart to operate in the 769–775 MHz and 799–805 MHz frequency bands
must be constructed and placed into operation within 12 months from the date of grant of the authorization, except
for State channels. However, licensees may request a longer construction period, up to but not exceeding 5 years,
pursuant to § 90.155(b). State channels are subject to the build-out requirements in § 90.529.

[72 FR 48863, Aug. 24, 2007]

§ 90.553 Encryption.
     (a) Encryption is permitted on all but the two nationwide Interoperability calling channels. Radios employing
         encryption must have a readily accessible switch or other readily accessible control that permits the radio
         user to disable encryption.

     (b) If encryption is employed, then transmitters manufactured after August 11, 2014 must use the Advanced
         Encryption Standard (AES) specified in ANSI/TIA–102.AAAD–A. Until 2030, manufacturers may also
         include the Digital Encryption Standard (DES) or Triple Data Encryption Algorithm (TDEA), in addition to
         but not in place of AES, for compatibility with legacy radios that lack AES capability.

     (c) ANSI/TIA–102.AAAD–A: Project 25 Digital Land Mobile Radio-Block Encryption Protocol, approved August
         20, 2009 is incorporated by reference into this section with the approval of the Director of the Federal
         Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. This incorporation by reference (IBR)
47 CFR 90.553(c) (enhanced display)                                                                            page 358 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.553(c)(1)
Private Land Mobile Radio Services

           material is available for inspection at the FCC and at the National Archives and Records Administration
           (NARA). Contact the FCC through the Federal Communications Commission's Reference Information
           Center, phone: (202) 418–0270. For information on the availability of this material at NARA, visit
           www.archives.gov/federal-register/cfr/ibr-locations.html or email fr.inspection@nara.gov. The material may
           be obtained from the following sources:

           (1) Telecommunications Industry Association (TIA), 2500 Wilson Boulevard, Arlington, VA 22201;
               website: https://tiaonline.org.

           (2) S&P Global Standards Store, 15 Inverness Way East, Englewood, CO 80112; website:
               https://global.ihs.com.

           (3) American National Standards Institute (ANSI), 25 West 43rd Street, Fourth Floor, New York, NY
               10036; website: www.ansi.org.

[66 FR 10636, Feb. 16, 2001, as amended at 67 FR 61006, Sept. 26, 2002; 79 FR 39341, July 10, 2014; 85 FR 64410, Oct. 13, 2020;
88 FR 21450, Apr. 10, 2023]

§ 90.555 Information exchange.
     (a) Prior notification. Public safety licensees authorized to operate in the 758–775 MHz and 788–805 MHz
         bands may notify any licensee authorized to operate in the 746–757 MHz or 776–787 MHz bands that
         they wish to receive prior notification of the activation or modification of the licensee's base or fixed
         stations in their area. Thereafter, the 746–757 MHz or 776–787 MHz band licensee must provide the
         following information to the public safety licensee at least 10 business days before a new base or fixed
         station is activated or an existing base or fixed station is modified:

           (1) Location;

           (2) Effective radiated power;

           (3) Antenna height; and

           (4) Channels available for use.

     (b) Purpose of prior notification. The prior coordination of base or fixed stations is for informational purposes
         only. Public safety licensees are not afforded the right to accept or reject the activation of a proposed
         base or fixed station or to unilaterally require changes in its operating parameters. The principal purposes
         of notification are to:

           (1) Allow a public safety licensee to advise the 746–757 or 776–787 MHz band licensee whether it
               believes a proposed base or fixed station will generate unacceptable interference;

           (2) Permit 746–757 and 776–787 MHz band licensees to make voluntary changes in base or fixed
               station parameters when a public safety licensee alerts them to possible interference; and,

           (3) Rapidly identify the source if interference is encountered when the base or fixed station is activated.

     (c) Public Safety Information Exchange.

           (1) Upon request by a 746–757 or 776–787 MHz band licensee, public safety licensees authorized to
               operate radio systems in the 758–775 and 788–805 MHz bands shall provide the operating
               parameters of their radio system to the 746–757 or 776–787 MHz band licensee.

47 CFR 90.555(c)(1) (enhanced display)                                                                          page 359 of 516
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                                                                                                  47 CFR 90.555(c)(2)
Private Land Mobile Radio Services

           (2) Public safety licensees who perform the information exchange described in this section must notify
               the appropriate 746–757 or 776–787 MHz band licensees prior to any technical changes to their
               radio system.

[72 FR 27713, May 16, 2007, as amended at 72 FR 67578, Nov. 29, 2007; 79 FR 601, Jan. 6, 2014]

§ 90.557 Secondary fixed signaling operations.
Trunked and conventional 700 MHz narrowband systems may conduct fixed ancillary signaling and data
transmissions subject to the following requirements:

     (a) Operations are permitted only on:

           (1) Narrowband State License channels specified in § 90.531(b)(5), subject to the discretion of the
               relevant State licensee; and

           (2) Narrowband General Use channels specified in § 90.531(b)(6), subject to the discretion of the
               regional planning committee.

     (b) All operations must be on a secondary, non-interference basis to the primary mobile operation of any
         other licensee.

     (c) The output power at the remote site must not exceed 30 watts.

     (d) Automatic means must be provided to deactivate the remote transmitter in the event the carrier remains
         on for a period in excess of three minutes.

     (e) Operational fixed stations authorized pursuant to this section are exempt from the requirements of §§
         90.425, 90.429, and 90.559.

     (f) Any operations undertaken in a shared use environment must be conducted pursuant to an agreement
         between the licensee and each participant, as set forth in § 90.179.

[79 FR 39341, July 10, 2014]

§ 90.559 Station Identification.
     (a) Conventional systems of communication shall be identified in accordance with existing regulations
         governing such matters.

     (b) Trunked systems of communication, except as noted in paragraph (c) of this section, shall be identified
         through the use of an automatic device which transmits the call sign of the base station facility at 30
         minute intervals. Such station identification shall be made on the lowest frequency in the base station
         trunk group assigned the licensee. Should this frequency be in use at the time station identification is
         required, such identification may be made at the termination of the communication in progress on this
         frequency. Identification may be made by voice or International Morse Code. When the call sign is
         transmitted in International Morse Code, it must be at a rate of between 15 to 20 words per minute and by
         means of tone modulation of the transmitter, the tone frequency being between 800 and 1000 hertz.

47 CFR 90.559(b) (enhanced display)                                                                   page 360 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                               47 CFR 90.559(c)
Private Land Mobile Radio Services

     (c) Stations operating in the 769–775/799–805 MHz band that are licensed on an exclusive basis, and
         normally employ digital signals for the transmission of data, text, control codes, or digitized voice may
         also be identified by digital transmission of the call sign. A licensee that identifies its station in this
         manner must provide the Commission, upon its request, information sufficient to decode the digital
         transmission and ascertain the call sign transmitted.

[79 FR 39341, July 10, 2014]

Subpart S—Regulations Governing Licensing and Use of Frequencies in the 806–824, 851–869,
896–901, and 935–940 MHz Bands
§ 90.601 Scope.
This subpart sets out the regulations governing the licensing and operations of all systems operating in the
806–824/851–869 MHz and the narrowband operations in the 896–901/935–940 MHz bands. It includes eligibility
requirements, and operational and technical standards for stations licensed in these bands. It also supplements the
rules regarding application procedures contained in part 1, subpart F of this chapter. The rules in this subpart are to
be read in conjunction with the applicable requirements contained elsewhere in this part; however, in case of
conflict, the provisions of this subpart shall govern with respect to licensing and operation in these frequency
bands.

[85 FR 43139, July 15, 2020]

                                              APPLICATION FOR AUTHORIZATIONS

§ 90.603 Eligibility.
Except as specified in § 90.616, the following persons are eligible for licensing in the 806–824 MHz, 851–869 MHz,
896–901 MHz, and 935–940 MHz bands.

     (a) Any person eligible for licensing under subparts B, C, D, or E of this part.

     (b) Any person proposing to provide communications service to any person eligible for licensing under
         subparts B or C of this part on a not-for-profit, cost-shared basis.

     (c) Any person eligible under this part and proposing to provide on a commercial basis base station an
         ancillary facilities as a Specialized Mobile Radio Service System operator, for the use of individuals,
         federal government agencies and persons eligible for licensing under subparts B or C of this part.

[47 FR 41032, Sept. 16, 1982, as amended at 53 FR 1025, Jan. 15, 1988; 60 FR 15495, Mar. 24, 1995; 62 FR 18934, Apr. 17, 1997;
85 FR 43139, July 15, 2020]

§ 90.605 Forms to be used.
Applications for conventional and trunked radio facilities must be prepared on FCC Form 601 and must be
submitted or filed in accordance with § 90.127 and part 1, subpart F of this chapter.

[63 FR 68967, Dec. 14, 1998]

47 CFR 90.605 (enhanced display)                                                                                page 361 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.607
Private Land Mobile Radio Services

§ 90.607 Supplemental information to be furnished by applicants for facilities under this
subpart.
     (a) Except for applicants for SMR licenses, all applicants for conventional radio systems must:

           (1) List all radio systems licensed to them or proposed by them within 64 km (40 mi.) from the location
               of the base station transmitter site of the facility for which they have applied.

           (2) Specify the number of mobile units to be placed in operation upon grant of the authorization and the
               number of such units that will be placed in operation within 8 months of the date of grant.

     (b) Except for applicants for SMR licenses, all applicants for trunked systems must:

           (1) List all radio systems licensed to them within 64 km (40 mi.) from the location of the base station
               transmitter site of the facility for which they have applied;

           (2) Specify the number of vehicular and portable mobile units and control stations to be placed in
               operation within the term of the license.

     (c) [Reserved]

     (d) All applicants for frequencies governed by this subpart are subject to the frequency coordination
         requirements of § 90.175(b) except applicants requesting frequencies for EA-based SMR operations in
         the 806–824 MHz/851–869 MHz band or 896–901 MHz/935–940 MHz band.

[47 FR 41032, Sept. 16, 1982, as amended at 49 FR 36377, Sept. 17, 1984; 51 FR 14999, Apr. 22, 1986; 59 FR 59966, Nov. 21,
1994; 63 FR 68967, Dec. 14, 1998; 69 FR 67838, Nov. 22, 2004; 70 FR 61061, Oct. 20, 2005]

§ 90.609 Special limitations on amendment of applications for assignment or transfer of
authorizations for radio systems above 800 MHz.
     (a) [Reserved]

     (b) A license to operate a conventional or trunked radio system may not be assigned or transferred prior to
         the completion of construction of the facility. However, the Commission may give its consent to the
         assignment or transfer of control of such a license prior to the completion of construction where:

           (1) The assignment or transfer does not involve a substantial change in ownership or control of the
               authorized radio facilities; or,

           (2) The assignment or transfer is involuntary due to the licensee's insolvency, bankruptcy, incapacity, or
               death.

     (c) Licensees of constructed systems in any category are permitted to make partial assignments of an
         authorized grant to an applicant proposing to create a new system or to an existing licensee that has
         loaded its system to 70 mobiles per channel and is expanding that system. An applicant authorized to
         expand an existing system or to create a new system with frequencies from any category obtained
         through partial assignment will receive the assignor's existing license expiration date and loading
         deadline for the frequencies that are assigned. A licensee that makes a partial assignment of a station's
         frequencies will not be authorized to obtain additional frequencies for that station for a period of one year
         from the date of the partial assignment.

47 CFR 90.609(c) (enhanced display)                                                                             page 362 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.609(d)
Private Land Mobile Radio Services

      (d) A constructed system originally licensed in the General Category that is authorized to operate in the
          conventional mode may be combined with an existing SMR system above 800 MHz authorized to operate
          in the trunked mode by assignment of an authorized grant of the General Category station to the SMR
          station.

[47 FR 41032, Sept. 16, 1982, as amended at 55 FR 28029, July 9, 1990; 58 FR 44962, Aug. 25, 1993; 61 FR 6155, Feb. 16, 1996;
63 FR 68967, Dec. 14, 1998; 69 FR 67838, Nov. 22, 2004]

    POLICIES GOVERNING THE PROCESSING OF APPLICATIONS AND THE SELECTION AND ASSIGNMENT OF
FREQUENCIES FOR USE IN THE 806–824 MHZ, 851–869 MHZ, 896–901 MHZ, AND 935–940 MHZ BANDS

§ 90.613 Frequencies available.
The following table indicates the channel designations of frequencies available for assignment to eligible applicants
under this subpart. Frequencies shall be assigned in pairs, with mobile and control station transmitting frequencies
taken from the 806–824 MHz band with corresponding base station frequencies being 45 MHz higher and taken
from the 851–869 MHz band, or with mobile and control station frequencies taken from the 896–901 MHz band
with corresponding base station frequencies being 39 MHz higher and taken from the 935–940 MHz band. For
operations in the 897.5–900.5 MHz and 936.5–939.5 MHz bands (Channels 120–360), no new applications will be
accepted in a transitioned market for a narrowband system under part 90, subpart S of this chapter. Only the base
station transmitting frequency of each pair is listed in the following table.

               Table of 806–824/851–869 MHz Channel Designations

                                                                                  Base
                       Channel No.                                             frequency
                                                                                 (MHz)
 1                                                                                                851.0125
 2                                                                                                    .0375
 3                                                                                                    .0500
 4                                                                                                    .0625
 5                                                                                                    .0750
 6                                                                                                    .0875
 7                                                                                                    .1000
 8                                                                                                    .1125
 9                                                                                                    .1250
 10                                                                                                   .1375
 11                                                                                                   .1500
 12                                                                                                   .1625
 13                                                                                                   .1750
 14                                                                                                   .1875
 15                                                                                                   .2000
 16                                                                                                   .2125
 17                                                                                                   .2250

47 CFR 90.613 (enhanced display)                                                                                page 363 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 18                                                       .2375
 19                                                       .2500
 20                                                       .2625
 21                                                       .2750
 22                                                       .2875
 23                                                       .3000
 24                                                       .3125
 25                                                       .3250
 26                                                       .3375
 27                                                       .3500
 28                                                       .3625
 29                                                       .3750
 30                                                       .3875
 31                                                       .4000
 32                                                       .4125
 33                                                       .4250
 34                                                       .4375
 35                                                       .4500
 36                                                       .4625
 37                                                       .4750
 38                                                       .4875
 39                                                       .5125
 40                                                       .5375
 41                                                       .5500
 42                                                       .5625
 43                                                       .5750
 44                                                       .5875
 45                                                       .6000
 46                                                       .6125
 47                                                       .6250
 48                                                       .6375
 49                                                       .6500
 50                                                       .6625
 51                                                       .6750
 52                                                       .6875
 53                                                       .7000
 54                                                       .7125
 55                                                       .7250

47 CFR 90.613 (enhanced display)                                  page 364 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 56                                                          .7375
 57                                                          .7500
 58                                                          .7625
 59                                                          .7750
 60                                                          .7875
 61                                                          .8000
 62                                                          .8125
 63                                                          .8250
 64                                                          .8375
 65                                                          .8500
 66                                                          .8625
 67                                                          .8750
 68                                                          .8875
 69                                                          .9000
 70                                                          .9125
 71                                                          .9250
 72                                                          .9375
 73                                                          .9500
 74                                                          .9625
 75                                                          .9750
 76                                                          .9875
 77                                                       852.0125
 78                                                          .0375
 79                                                          .0500
 80                                                          .0625
 81                                                          .0750
 82                                                          .0875
 83                                                          .1000
 84                                                          .1125
 85                                                          .1250
 86                                                          .1375
 87                                                          .1500
 88                                                          .1625
 89                                                          .1750
 90                                                          .1875
 91                                                          .2000
 92                                                          .2125
 93                                                          .2250

47 CFR 90.613 (enhanced display)                                     page 365 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 94                                                       .2375
 95                                                       .2500
 96                                                       .2625
 97                                                       .2750
 98                                                       .2875
 99                                                       .3000
 100                                                      .3125
 101                                                      .3250
 102                                                      .3375
 103                                                      .3500
 104                                                      .3625
 105                                                      .3750
 106                                                      .3875
 107                                                      .4000
 108                                                      .4125
 109                                                      .4250
 110                                                      .4375
 111                                                      .4500
 112                                                      .4625
 113                                                      .4750
 114                                                      .4875
 115                                                      .5125
 116                                                      .5375
 117                                                      .5500
 118                                                      .5625
 119                                                      .5750
 120                                                      .5875
 121                                                      .6000
 122                                                      .6125
 123                                                      .6250
 124                                                      .6375
 125                                                      .6500
 126                                                      .6625
 127                                                      .6750
 128                                                      .6875
 129                                                      .7000
 130                                                      .7125
 131                                                      .7250

47 CFR 90.613 (enhanced display)                                  page 366 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 132                                                         .7375
 133                                                         .7500
 134                                                         .7625
 135                                                         .7750
 136                                                         .7875
 137                                                         .8000
 138                                                         .8125
 139                                                         .7375
 140                                                         .8375
 141                                                         .8500
 142                                                         .8625
 143                                                         .8750
 144                                                         .8875
 145                                                         .9000
 146                                                         .9125
 147                                                         .9250
 148                                                         .9375
 149                                                         .9500
 150                                                         .9625
 151                                                         .9750
 152                                                         .9875
 153                                                      853.0125
 154                                                         .0375
 155                                                         .0500
 156                                                         .0625
 157                                                         .0750
 158                                                         .0875
 159                                                         .1000
 160                                                         .1125
 161                                                         .1250
 162                                                         .1375
 163                                                         .1500
 164                                                         .1625
 165                                                         .1750
 166                                                         .1875
 167                                                         .2000
 168                                                         .2125
 169                                                         .2250

47 CFR 90.613 (enhanced display)                                     page 367 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 170                                                      .2375
 171                                                      .2500
 172                                                      .2625
 173                                                      .2750
 174                                                      .2875
 175                                                      .3000
 176                                                      .3125
 177                                                      .3250
 178                                                      .3375
 179                                                      .3500
 180                                                      .3625
 181                                                      .3750
 182                                                      .3875
 183                                                      .4000
 184                                                      .4125
 185                                                      .4250
 186                                                      .4375
 187                                                      .4500
 188                                                      .4625
 189                                                      .4750
 190                                                      .4875
 191                                                      .5000
 192                                                      .5125
 193                                                      .5250
 194                                                      .5375
 195                                                      .5500
 196                                                      .5625
 197                                                      .5750
 198                                                      .5875
 199                                                      .6000
 200                                                      .6125
 201                                                      .6250
 202                                                      .6375
 203                                                      .6500
 204                                                      .6625
 205                                                      .6750
 206                                                      .6875
 207                                                      .7000

47 CFR 90.613 (enhanced display)                                  page 368 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 208                                                         .7125
 209                                                         .7250
 210                                                         .7375
 211                                                         .7500
 212                                                         .7625
 213                                                         .7750
 214                                                         .7875
 215                                                         .8000
 216                                                         .8125
 217                                                         .8250
 218                                                         .8375
 219                                                         .8500
 220                                                         .8625
 221                                                         .8750
 222                                                         .8875
 223                                                         .9000
 224                                                         .9125
 225                                                         .9250
 226                                                         .9375
 227                                                         .9500
 228                                                         .9625
 229                                                         .9750
 230                                                         .9875
 231                                                      854.0125
 231a                                                        .0250
 232                                                         .0375
 232a                                                        .0500
 233                                                         .0625
 233a                                                        .0750
 234                                                         .0875
 234a                                                        .1000
 235                                                         .1125
 235a                                                        .1250
 236                                                         .1375
 236a                                                        .1500
 237                                                         .1625
 237a                                                        .1750
 238                                                         .1875

47 CFR 90.613 (enhanced display)                                     page 369 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 238a                                                     .2000
 239                                                      .2125
 239a                                                     .2250
 240                                                      .2375
 240a                                                     .2500
 241                                                      .2625
 241a                                                     .2750
 242                                                      .2875
 242a                                                     .3000
 243                                                      .3125
 243a                                                     .3250
 244                                                      .3375
 244a                                                     .3500
 245                                                      .3625
 245a                                                     .3750
 246                                                      .3875
 246a                                                     .4000
 247                                                      .4125
 247a                                                     .4250
 248                                                      .4375
 248a                                                     .4500
 249                                                      .4625
 249a                                                     .4750
 250                                                      .4875
 250a                                                     .5000
 251                                                      .5125
 251a                                                     .5250
 252                                                      .5375
 252a                                                     .5500
 253                                                      .5625
 253a                                                     .5750
 254                                                      .5875
 254a                                                     .6000
 255                                                      .6125
 255a                                                     .6250
 256                                                      .6375
 256a                                                     .6500
 257                                                      .6625

47 CFR 90.613 (enhanced display)                                  page 370 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 257a                                                        .6750
 258                                                         .6875
 258a                                                        .7000
 259                                                         .7125
 259a                                                        .7250
 260                                                         .7375
 260a                                                        .7500
 261                                                         .7625
 261a                                                        .7750
 262                                                         .7875
 262a                                                        .8000
 263                                                         .8125
 263a                                                        .8250
 264                                                         .8375
 264a                                                        .8500
 265                                                         .8625
 265a                                                        .8750
 266                                                         .8875
 266a                                                        .9000
 267                                                         .9125
 267a                                                        .9250
 268                                                         .9375
 268a                                                        .9500
 269                                                         .9625
 269a                                                        .9750
 270                                                         .9875
 270a                                                     855.0000
 271                                                         .0125
 271a                                                        .0250
 272                                                         .0375
 272a                                                        .0500
 273                                                         .0625
 273a                                                        .0750
 274                                                         .0875
 274a                                                        .1000
 275                                                         .1125
 275a                                                        .1250
 276                                                         .1375

47 CFR 90.613 (enhanced display)                                     page 371 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 276a                                                     .1500
 277                                                      .1625
 277a                                                     .1750
 278                                                      .1875
 278a                                                     .2000
 279                                                      .2125
 279a                                                     .2250
 280                                                      .2375
 280a                                                     .2500
 281                                                      .2625
 281a                                                     .2750
 282                                                      .2875
 282a                                                     .3000
 283                                                      .3125
 283a                                                     .3250
 284                                                      .3375
 284a                                                     .3500
 285                                                      .3625
 285a                                                     .3750
 286                                                      .3875
 286a                                                     .4000
 287                                                      .4125
 287a                                                     .4250
 288                                                      .4375
 288a                                                     .4500
 289                                                      .4625
 289a                                                     .4750
 290                                                      .4875
 290a                                                     .5000
 291                                                      .5125
 291a                                                     .5250
 292                                                      .5375
 292a                                                     .5500
 293                                                      .5625
 293a                                                     .5750
 294                                                      .5875
 294a                                                     .6000
 295                                                      .6125

47 CFR 90.613 (enhanced display)                                  page 372 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 295a                                                        .6250
 296                                                         .6375
 296a                                                        .6500
 297                                                         .6625
 297a                                                        .6750
 298                                                         .6875
 298a                                                        .7000
 299                                                         .7125
 299a                                                        .7250
 300                                                         .7375
 300a                                                        .7500
 301                                                         .7625
 301a                                                        .7750
 302                                                         .7875
 302a                                                        .8000
 303                                                         .8125
 303a                                                        .8250
 304                                                         .8375
 304a                                                        .8500
 305                                                         .8625
 305a                                                        .8750
 306                                                         .8875
 306a                                                        .9000
 307                                                         .9125
 307a                                                        .9250
 308                                                         .9375
 308a                                                        .9500
 309                                                         .9625
 309a                                                        .9750
 310                                                         .9875
 310a                                                     856.0000
 311                                                         .0125
 311a                                                        .0250
 312                                                         .0375
 312a                                                        .0500
 313                                                         .0625
 313a                                                        .0750
 314                                                         .0875

47 CFR 90.613 (enhanced display)                                     page 373 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 314a                                                     .1000
 315                                                      .1125
 315a                                                     .1250
 316                                                      .1375
 316a                                                     .1500
 317                                                      .1625
 317a                                                     .1750
 318                                                      .1875
 318a                                                     .2000
 319                                                      .2125
 319a                                                     .2250
 320                                                      .2375
 320a                                                     .2500
 321                                                      .2625
 321a                                                     .2750
 322                                                      .2875
 322a                                                     .3000
 323                                                      .3125
 323a                                                     .3250
 324                                                      .3375
 324a                                                     .3500
 325                                                      .3625
 325a                                                     .3750
 326                                                      .3875
 326a                                                     .4000
 327                                                      .4125
 327a                                                     .4250
 328                                                      .4375
 328a                                                     .4500
 329                                                      .4625
 329a                                                     .4750
 330                                                      .4875
 330a                                                     .5000
 331                                                      .5125
 331a                                                     .5250
 332                                                      .5375
 332a                                                     .5500
 333                                                      .5625

47 CFR 90.613 (enhanced display)                                  page 374 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 333a                                                        .5750
 334                                                         .5875
 334a                                                        .6000
 335                                                         .6125
 335a                                                        .6250
 336                                                         .6375
 336a                                                        .6500
 337                                                         .6625
 337a                                                        .6750
 338                                                         .6875
 338a                                                        .7000
 339                                                         .7125
 339a                                                        .7250
 340                                                         .7375
 340a                                                        .7500
 341                                                         .7625
 341a                                                        .7750
 342                                                         .7875
 342a                                                        .8000
 343                                                         .8125
 343a                                                        .8250
 344                                                         .8375
 344a                                                        .8500
 345                                                         .8625
 345a                                                        .8750
 346                                                         .8875
 346a                                                        .9000
 347                                                         .9125
 347a                                                        .9250
 348                                                         .9375
 348a                                                        .9500
 349                                                         .9625
 349a                                                        .9750
 350                                                         .9875
 350a                                                     857.0000
 351                                                         .0125
 351a                                                        .0250
 352                                                         .0375

47 CFR 90.613 (enhanced display)                                     page 375 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 352a                                                     .0500
 353                                                      .0625
 353a                                                     .0750
 354                                                      .0875
 354a                                                     .1000
 355                                                      .1125
 355a                                                     .1250
 356                                                      .1375
 356a                                                     .1500
 357                                                      .1625
 357a                                                     .1750
 358                                                      .1875
 358a                                                     .2000
 359                                                      .2125
 359a                                                     .2250
 360                                                      .2375
 360a                                                     .2500
 361                                                      .2625
 361a                                                     .2750
 362                                                      .2875
 362a                                                     .3000
 363                                                      .3125
 363a                                                     .3250
 364                                                      .3375
 364a                                                     .3500
 365                                                      .3625
 365a                                                     .3750
 366                                                      .3875
 366a                                                     .4000
 367                                                      .4125
 367a                                                     .4250
 368                                                      .4375
 368a                                                     .4500
 369                                                      .4625
 369a                                                     .4750
 370                                                      .4875
 370a                                                     .5000
 371                                                      .5125

47 CFR 90.613 (enhanced display)                                  page 376 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 371a                                                     .5250
 372                                                      .5375
 372a                                                     .5500
 373                                                      .5625
 373a                                                     .5750
 374                                                      .5875
 374a                                                     .6000
 375                                                      .6125
 375a                                                     .6250
 376                                                      .6375
 376a                                                     .6500
 377                                                      .6625
 377a                                                     .6750
 378                                                      .6875
 378a                                                     .7000
 379                                                      .7125
 379a                                                     .7250
 380                                                      .7375
 380a                                                     .7500
 381                                                      .7625
 381a                                                     .7750
 382                                                      .7875
 382a                                                     .8000
 383                                                      .8125
 383a                                                     .8250
 384                                                      .8375
 384a                                                     .8500
 385                                                      .8625
 385a                                                     .8750
 386                                                      .8875
 386a                                                     .9000
 387                                                      .9125
 387a                                                     .9250
 388                                                      .9375
 388a                                                     .9500
 389                                                      .9625
 389a                                                     .9750
 390                                                      .9875

47 CFR 90.613 (enhanced display)                                  page 377 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 390a                                                     858.0000
 391                                                         .0125
 391a                                                        .0250
 392                                                         .0375
 392a                                                        .0500
 393                                                         .0625
 393a                                                        .0750
 394                                                         .0875
 394a                                                        .1000
 395                                                         .1125
 395a                                                        .1250
 396                                                         .1375
 396a                                                        .1500
 397                                                         .1625
 397a                                                        .1750
 398                                                         .1875
 398a                                                        .2000
 399                                                         .2125
 399a                                                        .2250
 400                                                         .2375
 400a                                                        .2500
 401                                                         .2625
 401a                                                        .2750
 402                                                         .2875
 402a                                                        .3000
 403                                                         .3125
 403a                                                        .3250
 404                                                         .3375
 404a                                                        .3500
 405                                                         .3625
 405a                                                        .3750
 406                                                         .3875
 406a                                                        .4000
 407                                                         .4125
 407a                                                        .4250
 408                                                         .4375
 408a                                                        .4500
 409                                                         .4625

47 CFR 90.613 (enhanced display)                                     page 378 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 409a                                                     .4750
 410                                                      .4875
 410a                                                     .5000
 411                                                      .5125
 411a                                                     .5250
 412                                                      .5375
 412a                                                     .5500
 413                                                      .5625
 413a                                                     .5750
 414                                                      .5875
 414a                                                     .6000
 415                                                      .6125
 415a                                                     .6250
 416                                                      .6375
 416a                                                     .6500
 417                                                      .6625
 417a                                                     .6750
 418                                                      .6875
 418a                                                     .7000
 419                                                      .7125
 419a                                                     .7250
 420                                                      .7375
 420a                                                     .7500
 421                                                      .7625
 421a                                                     .7750
 422                                                      .7875
 422a                                                     .8000
 423                                                      .8125
 423a                                                     .8250
 424                                                      .8375
 424a                                                     .8500
 425                                                      .8625
 425a                                                     .8750
 426                                                      .8875
 426a                                                     .9000
 427                                                      .9125
 427a                                                     .9250
 428                                                      .9375

47 CFR 90.613 (enhanced display)                                  page 379 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 428a                                                        .9500
 429                                                         .9625
 429a                                                        .9750
 430                                                         .9875
 430a                                                     859.0000
 431                                                         .0125
 431a                                                        .0250
 432                                                         .0375
 432a                                                        .0500
 433                                                         .0625
 433a                                                        .0750
 434                                                         .0875
 434a                                                        .1000
 435                                                         .1125
 435a                                                        .1250
 436                                                         .1375
 436a                                                        .1500
 437                                                         .1625
 437a                                                        .1750
 438                                                         .1875
 438a                                                        .2000
 439                                                         .2125
 439a                                                        .2250
 440                                                         .2375
 440a                                                        .2500
 441                                                         .2625
 441a                                                        .2750
 442                                                         .2875
 442a                                                        .3000
 443                                                         .3125
 443a                                                        .3250
 444                                                         .3375
 444a                                                        .3500
 445                                                         .3625
 445a                                                        .3750
 446                                                         .3875
 446a                                                        .4000
 447                                                         .4125

47 CFR 90.613 (enhanced display)                                     page 380 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 447a                                                     .4250
 448                                                      .4375
 448a                                                     .4500
 449                                                      .4625
 449a                                                     .4750
 450                                                      .4875
 450a                                                     .5000
 451                                                      .5125
 451a                                                     .5250
 452                                                      .5375
 452a                                                     .5500
 453                                                      .5625
 453a                                                     .5750
 454                                                      .5875
 454a                                                     .6000
 455                                                      .6125
 455a                                                     .6250
 456                                                      .6375
 456a                                                     .6500
 457                                                      .6625
 457a                                                     .6750
 458                                                      .6875
 458a                                                     .7000
 459                                                      .7125
 459a                                                     .7250
 460                                                      .7375
 460a                                                     .7500
 461                                                      .7625
 461a                                                     .7750
 462                                                      .7875
 462a                                                     .8000
 463                                                      .8125
 463a                                                     .8250
 464                                                      .8375
 464a                                                     .8500
 465                                                      .8625
 465a                                                     .8750
 466                                                      .8875

47 CFR 90.613 (enhanced display)                                  page 381 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 466a                                                        .9000
 467                                                         .9125
 467a                                                        .9250
 468                                                         .9375
 468a                                                        .9500
 469                                                         .9625
 469a                                                        .9750
 470                                                         .9875
 471                                                      860.0125
 471a                                                        .0250
 472                                                         .0375
 472a                                                        .0500
 473                                                         .0625
 473a                                                        .0750
 474                                                         .0875
 474a                                                        .1000
 475                                                         .1125
 475a                                                        .1250
 476                                                         .1375
 476a                                                        .1500
 477                                                         .1625
 477a                                                        .1750
 478                                                         .1875
 478a                                                        .2000
 479                                                         .2125
 479a                                                        .2250
 480                                                         .2375
 480a                                                        .2500
 481                                                         .2625
 481a                                                        .2750
 482                                                         .2875
 482a                                                        .3000
 483                                                         .3125
 483a                                                        .3250
 484                                                         .3375
 484a                                                        .3500
 485                                                         .3625
 485a                                                        .3750

47 CFR 90.613 (enhanced display)                                     page 382 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 486                                                      .3875
 486a                                                     .4000
 487                                                      .4125
 487a                                                     .4250
 488                                                      .4375
 488a                                                     .4500
 489                                                      .4625
 489a                                                     .4750
 490                                                      .4875
 490a                                                     .5000
 491                                                      .5125
 491a                                                     .5250
 492                                                      .5375
 492a                                                     .5500
 493                                                      .5625
 493a                                                     .5750
 494                                                      .5875
 494a                                                     .6000
 495                                                      .6125
 495a                                                     .6250
 496                                                      .6375
 496a                                                     .6500
 497                                                      .6625
 497a                                                     .6750
 498                                                      .6875
 498a                                                     .7000
 499                                                      .7125
 499a                                                     .7250
 500                                                      .7375
 500a                                                     .7500
 501                                                      .7625
 501a                                                     .7750
 502                                                      .7875
 502a                                                     .8000
 503                                                      .8125
 503a                                                     .8250
 504                                                      .8375
 504a                                                     .8500

47 CFR 90.613 (enhanced display)                                  page 383 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 505                                                         .8625
 505a                                                        .8750
 506                                                         .8875
 506a                                                        .9000
 507                                                         .9125
 507a                                                        .9250
 508                                                         .9375
 508a                                                        .9500
 509                                                         .9625
 509a                                                        .9750
 510                                                         .9875
 510a                                                     861.0000
 511                                                         .0125
 511a                                                        .0250
 512                                                         .0375
 512a                                                        .0500
 513                                                         .0625
 513a                                                        .0750
 514                                                         .0875
 514a                                                        .1000
 515                                                         .1125
 515a                                                        .1250
 516                                                         .1375
 516a                                                        .1500
 517                                                         .1625
 517a                                                        .1750
 518                                                         .1875
 518a                                                        .2000
 519                                                         .2125
 519a                                                        .2250
 520                                                         .2375
 520a                                                        .2500
 521                                                         .2625
 521a                                                        .2750
 522                                                         .2875
 522a                                                        .3000
 523                                                         .3125
 523a                                                        .3250

47 CFR 90.613 (enhanced display)                                     page 384 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 524                                                      .3375
 524a                                                     .3500
 525                                                      .3625
 525a                                                     .3750
 526                                                      .3875
 526a                                                     .4000
 527                                                      .4125
 527a                                                     .4250
 528                                                      .4375
 528a                                                     .4500
 529                                                      .4625
 529a                                                     .4750
 530                                                      .4875
 530a                                                     .5000
 531                                                      .5125
 531a                                                     .5250
 532                                                      .5375
 532a                                                     .5500
 533                                                      .5625
 533a                                                     .5750
 534                                                      .5875
 534a                                                     .6000
 535                                                      .6125
 535a                                                     .6250
 536                                                      .6375
 536a                                                     .6500
 537                                                      .6625
 537a                                                     .6750
 538                                                      .6875
 538a                                                     .7000
 539                                                      .7125
 539a                                                     .7250
 540                                                      .7375
 540a                                                     .7500
 541                                                      .7625
 541a                                                     .7750
 542                                                      .7875
 542a                                                     .8000

47 CFR 90.613 (enhanced display)                                  page 385 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 543                                                         .8125
 543a                                                        .8250
 544                                                         .8375
 544a                                                        .8500
 545                                                         .8625
 545a                                                        .8750
 546                                                         .8875
 546a                                                        .9000
 547                                                         .9125
 547a                                                        .9250
 548                                                         .9375
 548a                                                        .9500
 549                                                         .9625
 549a                                                        .9750
 550                                                         .9875
 551                                                      862.0125
 552                                                         .0375
 553                                                         .0625
 554                                                         .0875
 555                                                         .1125
 556                                                         .1375
 557                                                         .1625
 558                                                         .1875
 559                                                         .2125
 560                                                         .2375
 561                                                         .2625
 562                                                         .2875
 563                                                         .3125
 564                                                         .3375
 565                                                         .3625
 566                                                         .3875
 567                                                         .4125
 568                                                         .4375
 569                                                         .4625
 570                                                         .4875
 571                                                         .5125
 572                                                         .5375
 573                                                         .5625

47 CFR 90.613 (enhanced display)                                     page 386 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 574                                                         .5875
 575                                                         .6125
 576                                                         .6375
 577                                                         .6625
 578                                                         .6875
 579                                                         .7125
 580                                                         .7375
 581                                                         .7625
 582                                                         .7875
 583                                                         .8125
 584                                                         .8375
 585                                                         .8625
 586                                                         .8875
 587                                                         .9125
 588                                                         .9375
 589                                                         .9625
 590                                                         .9875
 591                                                      863.0125
 592                                                         .0375
 593                                                         .0625
 594                                                         .0875
 595                                                         .1125
 596                                                         .1375
 597                                                         .1625
 598                                                         .1875
 599                                                         .2125
 600                                                         .2375
 601                                                         .2625
 602                                                         .2875
 603                                                         .3125
 604                                                         .3375
 605                                                         .3625
 606                                                         .3875
 607                                                         .4125
 608                                                         .4375
 609                                                         .4625
 610                                                         .4875
 611                                                         .5125

47 CFR 90.613 (enhanced display)                                     page 387 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 612                                                         .5375
 613                                                         .5625
 614                                                         .5875
 615                                                         .6125
 616                                                         .6375
 617                                                         .6625
 618                                                         .6875
 619                                                         .7125
 620                                                         .7375
 621                                                         .7625
 622                                                         .7875
 623                                                         .8125
 624                                                         .8375
 625                                                         .8625
 626                                                         .8875
 627                                                         .9125
 628                                                         .9375
 629                                                         .9625
 630                                                         .9875
 631                                                      864.0125
 632                                                         .0375
 633                                                         .0625
 634                                                         .0875
 635                                                         .1125
 636                                                         .1375
 637                                                         .1625
 638                                                         .1875
 639                                                         .2125
 640                                                         .2375
 641                                                         .2625
 642                                                         .2875
 643                                                         .3125
 644                                                         .3375
 645                                                         .3625
 646                                                         .3875
 647                                                         .4125
 648                                                         .4375
 649                                                         .4625

47 CFR 90.613 (enhanced display)                                     page 388 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 650                                                         .4875
 651                                                         .5125
 652                                                         .5375
 653                                                         .5625
 654                                                         .5875
 655                                                         .6125
 656                                                         .6375
 657                                                         .6625
 658                                                         .6875
 659                                                         .7125
 660                                                         .7375
 661                                                         .7625
 662                                                         .7875
 663                                                         .8125
 664                                                         .8375
 665                                                         .8625
 666                                                         .8875
 667                                                         .9125
 668                                                         .9375
 669                                                         .9625
 670                                                         .9875
 671                                                      865.0125
 672                                                         .0375
 673                                                         .0625
 674                                                         .0875
 675                                                         .1125
 676                                                         .1375
 677                                                         .1625
 678                                                         .1875
 679                                                         .2125
 680                                                         .2375
 681                                                         .2625
 682                                                         .2875
 683                                                         .3125
 684                                                         .3375
 685                                                         .3625
 686                                                         .3875
 687                                                         .4125

47 CFR 90.613 (enhanced display)                                     page 389 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 688                                                         .4375
 689                                                         .4625
 690                                                         .4875
 691                                                         .5125
 692                                                         .5375
 693                                                         .5625
 694                                                         .5875
 695                                                         .6125
 696                                                         .6375
 697                                                         .6625
 698                                                         .6875
 699                                                         .7125
 700                                                         .7375
 701                                                         .7625
 702                                                         .7875
 703                                                         .8125
 704                                                         .8375
 705                                                         .8625
 706                                                         .8875
 707                                                         .9125
 708                                                         .9375
 709                                                         .9625
 710                                                         .9875
 711                                                      866.0125
 712                                                         .0375
 713                                                         .0625
 714                                                         .0875
 715                                                         .1125
 716                                                         .1375
 717                                                         .1625
 718                                                         .1875
 719                                                         .2125
 720                                                         .2375
 721                                                         .2625
 722                                                         .2875
 723                                                         .3125
 724                                                         .3375
 725                                                         .3625

47 CFR 90.613 (enhanced display)                                     page 390 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 726                                                         .3875
 727                                                         .4125
 728                                                         .4375
 729                                                         .4625
 730                                                         .4875
 731                                                         .5125
 732                                                         .5375
 733                                                         .5625
 734                                                         .5875
 735                                                         .6125
 736                                                         .6375
 737                                                         .6625
 738                                                         .6875
 739                                                         .7125
 740                                                         .7375
 741                                                         .7625
 742                                                         .7875
 743                                                         .8125
 744                                                         .8375
 745                                                         .8625
 746                                                         .8875
 747                                                         .9125
 748                                                         .9375
 749                                                         .9625
 750                                                         .9875
 751                                                      867.0125
 752                                                         .0375
 753                                                         .0625
 754                                                         .0875
 755                                                         .1125
 756                                                         .1375
 757                                                         .1625
 758                                                         .1875
 759                                                         .2125
 760                                                         .2375
 761                                                         .2625
 762                                                         .2875
 763                                                         .3125

47 CFR 90.613 (enhanced display)                                     page 391 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                       Channel No.            frequency
                                                (MHz)
 764                                                         .3375
 765                                                         .3625
 766                                                         .3875
 767                                                         .4125
 768                                                         .4375
 769                                                         .4625
 770                                                         .4875
 771                                                         .5125
 772                                                         .5375
 773                                                         .5625
 774                                                         .5875
 775                                                         .6125
 776                                                         .6375
 777                                                         .6625
 778                                                         .6875
 779                                                         .7125
 780                                                         .7375
 781                                                         .7625
 782                                                         .7875
 783                                                         .8125
 784                                                         .8375
 785                                                         .8625
 786                                                         .8875
 787                                                         .9125
 788                                                         .9375
 789                                                         .9625
 790                                                         .9875
 791                                                      868.0125
 792                                                         .0375
 793                                                         .0625
 794                                                         .0875
 795                                                         .1125
 796                                                         .1375
 797                                                         .1625
 798                                                         .1875
 799                                                         .2125
 800                                                         .2375
 801                                                         .2625

47 CFR 90.613 (enhanced display)                                     page 392 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.613
Private Land Mobile Radio Services

                                                                           Base
                       Channel No.                                      frequency
                                                                          (MHz)
 802                                                                                           .2875
 803                                                                                           .3125
 804                                                                                           .3375
 805                                                                                           .3625
 806                                                                                           .3875
 807                                                                                           .4125
 808                                                                                           .4375
 809                                                                                           .4625
 810                                                                                           .4875
 811                                                                                           .5125
 812                                                                                           .5375
 813                                                                                           .5625
 814                                                                                           .5875
 815                                                                                           .6125
 816                                                                                           .6375
 817                                                                                           .6625
 818                                                                                           .6875
 819                                                                                           .7125
 820                                                                                           .7375
 821                                                                                           .7625
 822                                                                                           .7875
 823                                                                                           .8125
 824                                                                                           .8375
 825                                                                                           .8625
 826                                                                                           .8875
 827                                                                                           .9125
 828                                                                                           .9375
 829                                                                                           .9625
 830                                                                                           .9875

1The channel bandwidth for interstitial channel pairs (denoted with an “a” after the channel
number) is 12.5 kilohertz. All other channel pairs have a channel bandwidth of 25 kilohertz.

               Table of 896–901/935–940 MHz Channel Designations

                                                                           Base
                      Channel No.                                       Frequency
                                                                          (MHz)
 1                                                                                        935.0125

47 CFR 90.613 (enhanced display)                                                                       page 393 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 2                                                        .0250
 3                                                        .0375
 4                                                        .0500
 5                                                        .0625
 6                                                        .0750
 7                                                        .0875
 8                                                        .1000
 9                                                        .1125
 10                                                       .1250
 11                                                       .1375
 12                                                       .1500
 13                                                       .1625
 14                                                       .1750
 15                                                       .1875
 16                                                       .2000
 17                                                       .2125
 18                                                       .2250
 19                                                       .2375
 20                                                       .2500
 21                                                       .2625
 22                                                       .2750
 23                                                       .2875
 24                                                       .3000
 25                                                       .3125
 26                                                       .3250
 27                                                       .3375
 28                                                       .3500
 29                                                       .3625
 30                                                       .3750
 31                                                       .3875
 32                                                       .4000
 33                                                       .4125
 34                                                       .4250
 35                                                       .4375
 36                                                       .4500
 37                                                       .4625
 38                                                       .4750
 39                                                       .4875

47 CFR 90.613 (enhanced display)                                  page 394 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 40                                                       .5000
 41                                                       .5125
 42                                                       .5250
 43                                                       .5375
 44                                                       .5500
 45                                                       .5625
 46                                                       .5750
 47                                                       .5875
 48                                                       .6000
 49                                                       .6125
 50                                                       .6250
 51                                                       .6375
 52                                                       .6500
 53                                                       .6625
 54                                                       .6750
 55                                                       .6875
 56                                                       .7000
 57                                                       .7125
 58                                                       .7250
 59                                                       .7375
 60                                                       .7500
 61                                                       .7626
 62                                                       .7750
 63                                                       .7875
 64                                                       .8000
 65                                                       .8125
 66                                                       .8250
 67                                                       .8375
 68                                                       .8500
 69                                                       .8625
 70                                                       .8750
 71                                                       .8875
 72                                                       .9000
 73                                                       .9125
 74                                                       .9250
 75                                                       .9375
 76                                                       .9500
 77                                                       .9625

47 CFR 90.613 (enhanced display)                                  page 395 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 78                                                          .9750
 79                                                          .9875
 80                                                       936.0000
 81                                                          .0125
 82                                                          .0250
 83                                                          .0375
 84                                                          .0500
 85                                                          .0625
 86                                                          .0750
 87                                                          .0875
 88                                                          .1000
 89                                                          .1125
 90                                                          .1250
 91                                                          .1375
 92                                                          .1500
 93                                                          .1625
 94                                                          .1750
 95                                                          .1875
 96                                                          .2000
 97                                                          .2125
 98                                                          .2250
 99                                                          .2375
 100                                                         .2500
 101                                                         .2625
 102                                                         .2750
 103                                                         .2875
 104                                                         .3000
 105                                                         .3125
 106                                                         .3250
 107                                                         .3375
 108                                                         .3500
 109                                                         .3625
 110                                                         .3750
 111                                                         .3875
 112                                                         .4000
 113                                                         .4125
 114                                                         .4250
 115                                                         .4375

47 CFR 90.613 (enhanced display)                                     page 396 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 116                                                      .4500
 117                                                      .4625
 118                                                      .4750
 119                                                      .4875
 120                                                      .5000
 121                                                      .5125
 122                                                      .5250
 123                                                      .5375
 124                                                      .5500
 125                                                      .5625
 126                                                      .5750
 127                                                      .5875
 128                                                      .6000
 129                                                      .6125
 130                                                      .6250
 131                                                      .6375
 132                                                      .6500
 133                                                      .6625
 134                                                      .6750
 135                                                      .6875
 136                                                      .7000
 137                                                      .7125
 138                                                      .7250
 139                                                      .6375
 140                                                      .7500
 141                                                      .7625
 142                                                      .7750
 143                                                      .7875
 144                                                      .8000
 145                                                      .8125
 146                                                      .8250
 147                                                      .8375
 148                                                      .8500
 149                                                      .8625
 150                                                      .8750
 151                                                      .8875
 152                                                      .9000
 153                                                      .9125

47 CFR 90.613 (enhanced display)                                  page 397 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 154                                                         .9250
 155                                                         .9375
 156                                                         .9500
 157                                                         .9625
 158                                                         .9750
 159                                                         .9875
 160                                                      937.0000
 161                                                         .0125
 162                                                         .0250
 163                                                         .0375
 164                                                         .0500
 165                                                         .0625
 166                                                         .0750
 167                                                         .0875
 168                                                         .1000
 169                                                         .1125
 170                                                         .1250
 171                                                         .1375
 172                                                         .1500
 173                                                         .1625
 174                                                         .1750
 175                                                         .1875
 176                                                         .2000
 177                                                         .2125
 178                                                         .2250
 179                                                         .2375
 180                                                         .2500
 181                                                         .2625
 182                                                         .2750
 183                                                         .2875
 184                                                         .3000
 185                                                         .3125
 186                                                         .3250
 187                                                         .3375
 188                                                         .3500
 189                                                         .3625
 190                                                         .3750
 191                                                         .3875

47 CFR 90.613 (enhanced display)                                     page 398 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 192                                                      .4000
 193                                                      .4125
 194                                                      .4250
 195                                                      .4375
 196                                                      .4500
 197                                                      .4625
 198                                                      .4750
 199                                                      .4875
 200                                                      .5000
 201                                                      .5125
 202                                                      .5250
 203                                                      .5375
 204                                                      .5500
 205                                                      .5625
 206                                                      .5750
 207                                                      .5875
 208                                                      .6000
 209                                                      .6125
 210                                                      .6250
 211                                                      .6375
 212                                                      .6500
 213                                                      .6625
 214                                                      .6750
 215                                                      .6875
 216                                                      .7000
 217                                                      .7125
 218                                                      .7250
 219                                                      .7375
 220                                                      .7500
 221                                                      .7625
 222                                                      .7750
 223                                                      .7875
 224                                                      .8000
 225                                                      .8125
 226                                                      .8250
 227                                                      .8375
 228                                                      .8500
 229                                                      .8625

47 CFR 90.613 (enhanced display)                                  page 399 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 230                                                         .8750
 231                                                         .8875
 232                                                         .9000
 233                                                         .9125
 234                                                         .9250
 235                                                         .9475
 236                                                         .9500
 237                                                         .9625
 238                                                         .9750
 239                                                         .9875
 240                                                      938.0000
 241                                                         .0125
 242                                                         .0250
 243                                                         .0375
 244                                                         .0500
 245                                                         .0625
 246                                                         .0750
 247                                                         .0875
 248                                                         .1000
 249                                                         .1125
 250                                                         .1250
 251                                                         .1375
 252                                                         .1500
 253                                                         .1625
 254                                                         .1750
 255                                                         .1875
 256                                                         .2000
 257                                                         .2125
 258                                                         .2250
 259                                                         .2375
 260                                                         .2500
 261                                                         .2625
 262                                                         .2750
 263                                                         .2875
 264                                                         .3000
 265                                                         .3125
 266                                                         .3250
 267                                                         .3375

47 CFR 90.613 (enhanced display)                                     page 400 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 268                                                      .3500
 269                                                      .3625
 270                                                      .3750
 271                                                      .3875
 272                                                      .4000
 273                                                      .4125
 274                                                      .4250
 275                                                      .4375
 276                                                      .4500
 277                                                      .4625
 278                                                      .4750
 279                                                      .4875
 280                                                      .5000
 281                                                      .5125
 282                                                      .5250
 283                                                      .5375
 284                                                      .5500
 285                                                      .5625
 286                                                      .5750
 287                                                      .5875
 288                                                      .6000
 289                                                      .6125
 290                                                      .6250
 291                                                      .6375
 292                                                      .6500
 293                                                      .6625
 294                                                      .6750
 295                                                      .6875
 296                                                      .7000
 297                                                      .7125
 298                                                      .7250
 299                                                      .7375
 300                                                      .7500
 301                                                      .7625
 302                                                      .7750
 303                                                      .7875
 304                                                      .8000
 305                                                      .8125

47 CFR 90.613 (enhanced display)                                  page 401 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 306                                                         .8250
 307                                                         .8375
 308                                                         .8500
 309                                                         .8625
 310                                                         .8750
 311                                                         .8875
 312                                                         .9000
 313                                                         .9125
 314                                                         .9250
 315                                                         .9375
 316                                                         .9500
 317                                                         .9625
 318                                                         .9750
 319                                                         .9875
 320                                                      939.0000
 321                                                         .0125
 322                                                         .0250
 323                                                         .0375
 324                                                         .0500
 325                                                         .0625
 326                                                         .0750
 327                                                         .0875
 328                                                         .1000
 329                                                         .1125
 330                                                         .1250
 331                                                         .1375
 332                                                         .1500
 333                                                         .1625
 334                                                         .1750
 335                                                         .1875
 336                                                         .2000
 337                                                         .2125
 338                                                         .2250
 339                                                         .2375
 340                                                         .2500
 341                                                         .2625
 342                                                         .2750
 343                                                         .2875

47 CFR 90.613 (enhanced display)                                     page 402 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                   47 CFR 90.613
Private Land Mobile Radio Services

                                                 Base
                      Channel No.             Frequency
                                                (MHz)
 344                                                      .3000
 345                                                      .3125
 346                                                      .3250
 347                                                      .3375
 348                                                      .3500
 349                                                      .3625
 350                                                      .3750
 351                                                      .3875
 352                                                      .4000
 353                                                      .4125
 354                                                      .4250
 355                                                      .4375
 356                                                      .4500
 357                                                      .4625
 358                                                      .4750
 359                                                      .4875
 360                                                      .5000
 361                                                      .5125
 362                                                      .5250
 363                                                      .5375
 364                                                      .5500
 365                                                      .5625
 366                                                      .5750
 367                                                      .5875
 368                                                      .6000
 369                                                      .6125
 370                                                      .6250
 371                                                      .6375
 372                                                      .6500
 373                                                      .6625
 374                                                      .6750
 375                                                      .6875
 376                                                      .7000
 377                                                      .7125
 378                                                      .7250
 379                                                      .7375
 380                                                      .7500
 381                                                      .7625

47 CFR 90.613 (enhanced display)                                  page 403 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.614
Private Land Mobile Radio Services

                                                                                 Base
                      Channel No.                                             Frequency
                                                                                (MHz)
 382                                                                                                 .7750
 383                                                                                                 .7875
 384                                                                                                 .8000
 385                                                                                                 .8125
 386                                                                                                 .8250
 387                                                                                                 .8375
 388                                                                                                 .8500
 389                                                                                                 .8625
 390                                                                                                 .8750
 391                                                                                                 .8875
 392                                                                                                 .9000
 393                                                                                                 .9125
 394                                                                                                 .9250
 395                                                                                                 .9375
 396                                                                                                 .9500
 397                                                                                                 .9625
 398                                                                                                 .9750
 399                                                                                                 .9875

[70 FR 56583, Sept. 28, 2005, as amended at 72 FR 35200, June 27, 2007; 83 FR 61097, Nov. 27, 2018; 85 FR 43139, July 15,
2020]

§ 90.614 Segments of the 806–824/851–869 MHz band for non-border areas.
The 806–824/851–869 MHz band (“800 MHz band”) will be divided as follows at locations farther then 110 km
(68.4 miles) from the U.S./Mexico border and 140 km (87 miles) from the U.S./Canadian border (“non-border areas”)

       (a) 800 MHz high density cellular systems—as defined in § 90.7—are prohibited from operating on channels
           1–550 in non-border areas.

       (b) 800 MHz high density cellular systems—as defined in § 90.7—are permitted to operate on channels
           551–830 in non-border areas.

       (c) In the following counties and parishes, 800 MHz high density cellular systems—as defined in § 90.7—are
           permitted to operate on channels 411–830:

          Alabama: Autauga, Baldwin, Barbour, Bibb, Blount, Bullock, Butler, Calhoun, Chambers, Cherokee, Chilton,
               Choctaw, Clarke, Clay, Cleburne, Coffee, Colbert, Conecuh, Coosa, Covington, Crenshaw, Cullman,
               Dale, Dallas, DeKalb, Elmore, Escambia, Etowah, Fayette, Franklin, Geneva, Greene, Hale, Henry,
               Houston, Jackson, Jefferson, Lamar, Lauderdale, Lawrence, Lee, Limestone, Lowndes, Macon,
               Madison, Marengo, Marion, Marshall, Mobile, Monroe, Montgomery, Morgan, Perry, Pickens, Pike,
               Randolph, Russell, Shelby, St Clair, Sumter, Talladega, Tallapoosa, Tuscaloosa, Walker, Washington,
               Wilcox, Winston.

47 CFR 90.614(c) “Alabama” (enhanced display)                                                                  page 404 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.614(c) “Florida”
Private Land Mobile Radio Services

         Florida: Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf, Holmes, Jackson, Jefferson, Leon, Liberty,
                Madison, Nassau, Okaloosa, Santa Rosa, Taylor, Wakulla, Walton, Washington.

         Georgia: Appling, Atkinson, Bacon, Baker, Baldwin, Banks, Barrow, Bartow, Ben Hill, Berrien, Bibb, Bleckley,
               Brantley, Brooks, Bryan, Bulloch, Burke, Butts, Calhoun, Camden, Candler, Carroll, Catoosa, Charlton,
               Chatham, Chattahoochee, Chattooga, Cherokee, Clarke, Clay, Clayton, Clinch, Cobb, Coffee, Colquitt,
               Columbia, Cook, Coweta, Crawford, Crisp, Dade, Dawson, Decatur, DeKalb, Dodge, Dooly, Dougherty,
               Douglas, Early, Echols, Effingham, Elbert, Emanuel, Evans, Fannin, Fayette, Floyd, Forsyth, Franklin,
               Fulton, Gilmer, Glascock, Glynn, Gordon, Grady, Greene, Gwinnett, Habersham, Hall, Hancock,
               Haralson, Harris, Hart, Heard, Henry, Houston, Irwin, Jackson, Jasper, Jeff Davis, Jefferson, Jenkins,
               Johnson, Jones, Lamar, Lanier, Laurens, Lee, Liberty, Lincoln, Long, Lowndes, Lumpkin, Macon,
               Madison, Marion, McDuffie, McIntosh, Meriwether, Miller, Mitchell, Monroe, Montgomery, Morgan,
               Murray, Muscogee, Newton, Oconee, Oglethorpe, Paulding, Peach, Pickens, Pierce, Pike, Polk, Pulaski,
               Putnam, Quitman, Rabun, Randolph, Richmond, Rockdale, Schley, Screven, Seminole, Spalding,
               Stephens, Stewart, Sumter, Talbot, Taliaferro, Tattnall, Taylor, Telfair, Terrell, Thomas, Tift, Toombs,
               Towns, Treutlen, Troup, Turner, Twiggs, Union, Upson, Walker, Walton, Ware, Warren, Washington,
               Wayne, Webster, Wheeler, White, Whitfield, Wilcox, Wilkes, Wilkinson, Worth.

         Louisiana: Catahoula, Concordia, Madison, Tensas.

         Mississippi: Adams, Alcorn, Amite, Attala, Calhoun, Carroll, Chickasaw, Choctaw, Claiborne, Clarke, Clay,
               Copiah, Covington, Forrest, Franklin, George, Greene, Grenada, Hancock, Harrison, Hinds, Holmes,
               Itawamba, Jackson, Jasper, Jefferson, Jefferson Davis, Jones, Kemper, Lamar, Lauderdale,
               Lawrence, Leake, Lee, Lincoln, Lowndes, Madison, Marion, Monroe, Montgomery, Neshoba, Newton,
               Noxubee, Oktibbeha, Pearl River, Perry, Pike, Pontotoc, Prentiss, Rankin, Scott, Simpson, Smith, Stone,
               Tippah, Tishomingo, Union, Walthall, Warren, Wayne, Webster, Wilkinson, Winston, Yazoo.

         North Carolina: Cherokee, Clay, Graham, Jackson, Macon.

         South Carolina: Abbeville, Aiken, Allendale, Anderson, Bamberg, Barnwell, Beaufort, Edgefield, Greenwood,
               Hampton, Jasper, McCormick, Oconee.

         Tennessee: Bledsoe, Bradley, Franklin, Giles, Hamilton, Hardin, Lawrence, Lincoln, Marion, McMinn, McNairy,
              Meigs, Monroe, Moore, Polk, Rhea, Sequatchie, Wayne.

[69 FR 67843, Nov. 22, 2004, as amended at 70 FR 76708, Dec. 28, 2005; 72 FR 39760, July 20, 2007]

§ 90.615 Individual channels available in the General Category in 806–824/851–869 MHz band.
The General Category will consist of channels 231–260a and 511–550 at locations farther than 110 km (68.4 miles)
from the U.S./Mexico border and 140 km (87 miles) from the U.S./Canadian border. All entities will be eligible for
licensing on these channels except as described in paragraphs (a) and (b) of this section.

     (a) In a given 800 MHz NPSPAC region, any channel in the 231–260 range which is vacated by a licensee
         relocating to channels 551–830 and which remains vacant after band reconfiguration will be available as
         follows:

           (1) Only to eligible applicants in the Public Safety Category until three years after the release of a public
               notice announcing the completion of band reconfiguration in that region;

47 CFR 90.615(a)(1) (enhanced display)                                                                         page 405 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.615(a)(2)
Private Land Mobile Radio Services

           (2) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three
               to five years after the release of a public notice announcing the completion of band reconfiguration
               in that region;

           (3) To all entities five years after release of a public notice announcing the completion of band
               reconfiguration in that region.

     (b) In a given 800 MHz NPSPAC region, any channel in the 231–260 range which is vacated by a licensee
         relocating to channels 511–550 and remains vacant after band reconfiguration will be available as
         follows:

           (1) Only to eligible applicants in the Public Safety Category until three years after the release of a public
               notice announcing the completion of band reconfiguration in that region;

           (2) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three
               to five years after the release of a public notice announcing the completion of band reconfiguration
               in that region;

           (3) To all entities five years after release of a public notice announcing the completion of band
               reconfiguration in that region.

     (c) Spectrum Block F1 consists of channels 236–260.

     (d) Applicants may begin to license interstitial channels (denoted with an “a” after the channel number) only
         after the Wireless Telecommunications Bureau and the Public Safety and Homeland Security Bureau
         jointly release a public notice announcing the availability of those channels for licensing in a National
         Public Safety Planning Advisory Committee region.

[70 FR 6759, Feb. 8, 2005, as amended at 70 FR 76708, Dec. 28, 2005; 83 FR 61100, Nov. 27, 2018]

§ 90.616 896–897.5/935–936.5 MHz and 900.5–901/939.5–940 MHz narrowband segments.
     (a) In a transitioned market, the narrowband segments of realigned 900 MHz spectrum (i.e., the 896–897.5/
         935–936.5 MHz and 900.5–901/939.5–940 MHz bands (Paired channels 1–119 and 361–399 as
         specified in § 90.613)) are designated for the following entities:

           (1) Applicants eligible in the Industrial/Business Pool of subpart C of this part;

           (2) Business/Industrial/Land Transportation Pool and Specialized Mobile Radio licensees authorized as
               of September 13, 2018, for continuing operations; and

           (3) Business/Industrial/Land Transportation Pool and Specialized Mobile Radio licensees authorized as
               of September 13, 2018, for relocation to the new narrowband segments from the broadband
               segment pursuant to part 27, subpart P, of this chapter.

     (b) Applications for new authorizations will only be accepted from applicants specified in paragraph (a)(1) of
         this section.

     (c) Table 1 to § 90.616(c) indicates the channels available in transitioned markets to the entities set forth in
         paragraph (a) of this section. These frequencies are available in transitioned markets in non-border areas
         and the U.S./Mexico border area. For multi-channel systems, channels may be grouped vertically or
         horizontally as they appear in the following table.

47 CFR 90.616(c) (enhanced display)                                                                       page 406 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.616(d)
Private Land Mobile Radio Services

               Table 1 to § 90.616(c)—Channels in the 896–897.5/935–936.5 MHz and
               900.5–901/939.5–940 MHz Frequency Bands in Tran- sitioned Markets

           [In non-border areas and in the United States/Mexico border area]

           1–2–3–4–5                                   81–82–83–84–85.
           6–7–8–9–10                                  86–87–88–89–90.
           11–12–13–14–15                              91–92–93–94–95.
           16–17–18–19–20                              96–97–98–99–100.
           21–22–23–24–25                              101–102–103–104–105.
           26–27–28–29–30                              106–107–108–109–110.
           31–32–33–34–35                              111–112–113–114–115.
           36–37–38–39–40                              116–117–118–119.
           41–42–43–44–45                              361–362–363–364–365.
           46–47–48–49–50                              366–367–368–369–370.
           51–52–53–54–55                              371–372–373–374–375.
           56–57–58–59–60                              376–377–378–379–380.
           61–62–63–64–65                              381–382–383–384–385.
           66–67–68–69–70                              386–387–388–389–390.
           71–72–73–74–75                              391–392–393–394–395.
           76–77–78–79–80                              396–397–398–399.

     (d) Table 2 to § 90.616(d) indicates the channels available in transitioned markets to the entities set forth in
         paragraph (a) of this section, available for use in the U.S./Canada border area.

                 Table 2 to § 90.616(d)—Channels in the 896–897.5/935–936.5 and
                900.5–901/939.5–940 MHz Frequency Bands in Transitioned Markets
                               Available in the U.S./Canada Border Area

                                                   Location
               Region                                                                           Channels
                                                 (longitude)
           1             66° W–71° W (0–100 km from border)                            1–119, 398, 399.
           2             71° W–80°30′ W (0–100 km from border)                         1–119.
           3             80°30′ W–85° W (0–100 km from border)                         1–119.
           4             85° W–121°30′ W (0–100 km from border)                        1–119, 398, 399.
           5             121°30′ W–127° W (0–140 km from border)                       1–119, 398, 399.
           6             127° W–143° W (0–100 km from border)                          1–119, 398, 399.
           7             66° W–121°30′ W (100–140 km from border)                      1–119, 361–399.
           8             127° W–143° W (100–140 km from border)                        1–119, 361–399.

47 CFR 90.616(d) (enhanced display)                                                                        page 407 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.616(e)
Private Land Mobile Radio Services

     (e) Table 3 to § 90.616(e) indicates additional channels available in transitioned markets to the entities set
         forth in paragraph (a) of this section, available for use in the U.S./Canada border area. The channels listed
         in Table 3 are available for assignment in Regions 1–6 if the maximum power flux density (PFD) of the
         station's transmitted signal does not exceed the limits specified in tables 29 and 30 of § 90.619 of this
         chapter.

     Table 3 to § 90.616(e)—Additional Channels Available in Tran- sitioned
                    Markets in the U.S./Canada Border Area

[Regions 1–6]

                         Channel
     Region                                                Effective radiated power
                          No.'s
 1                             361–397 See Table 29 of section 90.619.
 2                             361–399 See Table 29 of section 90.619.
 3                             361–399 See Table 29 of section 90.619.
 4                             361–397 See Table 29 of section 90.619.
 5                             361–397 See Table 30 of section 90.619.
 6                             361–397 See Table 29 of section 90.619.

[85 FR 43139, July 15, 2020]

§ 90.617 Frequencies in the 809.750–824/854.750–869 MHz, and 896–901/935–940 MHz bands
available for trunked, conventional or cellular system use in non-border areas.
The following channels will be available at locations farther then 110 km (68.4 miles) from the U.S./Mexico border
and 140 km (87 miles) from the U.S./Canadian border (“non-border areas”).

     (a) Unless otherwise specified, the channels listed in Table 1 and paragraph (a)(1) of this section are available
         for to eligible applicants in the Public Safety Category which consists of licensees eligible in the Public
         Safety Pool of subpart B of this part. 800 MHz high density cellular systems as defined in § 90.7 are
         prohibited on these channels. These frequencies are available in non-border areas. Specialized Mobile
         Radio Systems will not be authorized in this category. These channels are available for intercategory
         sharing as indicated in § 90.621(e).

                   Table 1—Public Safety Pool 806–816/851–861 MHz Band Channels

           [139 Channels]

                   Group No.                                        Channel Nos.
            269                       269–289–311–399–439.
            269a                      269a–289a–311a–399a–439a.
            270                       270–290–312–400–440.
            270a                      270a–290a–312a–400a–440a.
            279                       279–299–319–339–359.

47 CFR 90.617(a) (enhanced display)                                                                    page 408 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.617(a)(1)
Private Land Mobile Radio Services

                   Group No.                                            Channel Nos.
           279a                       279a–299a–319a–339a–359a.
           280                        280–300–320–340–360.
           280a                       280a–300a–320a–340a–360a.
           309                        309–329–349–369–389.
           309a                       309a–329a–349a–369a–389a.
           310                        310–330–350–370–390.
           310a                       310a–330a–350a–370a–390a.
           313                        313–353–393–441–461.
           313a                       313a–353a–393a–441a–461a.
           314                        314–354–394–448–468.
           314a                       314a–354a–394a–448a–468a.
           321                        321–341–361–381–419.
           321a                       321a–341a–361a–381a–419a.
           328                        328–348–368–388–420.
           328a                       328a–348a–368a–388a–420a.
           351                        351–379–409–429–449.
           351a                       351a–379a–409a–429a–449a.
           352                        352–380–410–430–450.
           332a                       352a–380a–410a–430a–450a.
           Single Channels            391, 392, 401, 408, 421, 428, 459, 460, 469, 470.
                                      391a, 392a, 401a, 408a, 421a, 428a, 459a, 460a, 469a.

           (1) Channels numbers 1–230 are also available to eligible applicants in the Public Safety Category in
               non-border areas. The assignment of these channels will be done in accordance with the policies
               defined in the Report and Order in Gen. Docket No. 87–112 (See § 90.16). The following channels
               are available only for mutual aid purposes as defined in Gen. Docket No. 87–112: Channels 1, 39, 77,
               115, 153. Mobile and portable radios operating on the mutual aid channels shall employ analog FM
               emission.

           (2) Except as provided in paragraph (a)(3) of this section, the channels listed in Table 1A are available in
               the counties listed in § 90.614(c) to eligible applicants in the Public Safety Category. 800 MHz high
               density cellular systems as defined in § 90.7 are prohibited on these channels. These channels are
               available for intercategory sharing as indicated in § 90.621(e).

                  Table 1A—Public Safety Pool 806–813.5/851–858.5 MHz Band Channels for
                                        Counties in Southeastern U.S.

                 [138 Channels]

                   Group No.                                            Channel Nos.
                  261           261–313–324–335–353
                  261a          261a–313a–324a–335a–353a

47 CFR 90.617(a)(2) (enhanced display)                                                                   page 409 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.617(a)(3)
Private Land Mobile Radio Services

                   Group No.                                           Channel Nos.
                 262            262–314–325–336–354
                 262a           262a–314a–325a–336a–354a
                 265            265–285–315–333–351
                 265a           265a–285a–315a–333a–351a
                 266            266–286–316–334–352
                 266a           266a–286a–316a–334a–352a
                 269            269–289–311–322–357
                 269a           269a–289a–311a–322a–357a
                 270            270–290–312–323–355
                 270a           270a–290a–312a–323a–355a
                 271            271–328–348–358–368
                 271a           271a–328a–348a–358a–368a
                 279            279–299–317–339–359
                 279a           279a–299a–317a–339a–359a
                 280            280–300–318–340–360
                 280a           280a–300a–318a–340a–360a
                 309            309–319–329–349–369
                 309a           309a–319a–329a–349a–369a
                 310            310–320–330–350–370
                 310a           310a–320a–330a–350a
                 321            321–331–341–361–372
                 321a           321a–331a–341a–361a
                 Single         326, 327, 332, 337, 338, 342, 343, 344, 345, 356, 326a, 327a, 332a, 337a, 338a, 342a, 343a,
                 Channels       344a, 345a, 356a

           (3) The channels listed in Table 1B are available within 113 km (70 mi) of the center city coordinates of
               Atlanta, GA to eligible applicants in the Public Safety Category. The center city coordinates of
               Atlanta, GA—for the purposes of the rule—are defined as 33°44′55″ NL, 84°23′17″ WL. 800 MHz high
               density cellular systems as defined in § 90.7 are prohibited on these channels. These channels are
               available for intercategory sharing as indicated in § 90.621(e).

                 Table 1B—Public Safety Pool 806–813.5/851–858.5 MHz Band Channels for
                                                Atlanta, GA

                [138 Channels]

                        Group No.                                            Channel Nos.
                 261                          261–313–324–335–353
                 261a                         261a–313a–324a–335a–353a
                 262                          262–314–325–336–354
                 262a                         262a–314a–325a–336a–354a

47 CFR 90.617(a)(3) (enhanced display)                                                                         page 410 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                     47 CFR 90.617(b)
Private Land Mobile Radio Services

                          Group No.                                           Channel Nos.
                  269                         269–289–311–322–357
                  269a                        269a–289a–311a–322a–357a
                  270                         270–290–312–323–355
                  270a                        270a–290a–312a–323a–355a
                  279                         279–299–319–339–359
                  279a                        279a–299a–319a–339a–359a
                  280                         280–300–320–340–360
                  280a                        280a–300a–320a–340a–360a
                  285                         285–315–333–351–379
                  285a                        285a–315a–333a–351a–379a
                  286                         286–316–334–352–380
                  286a                        286a–316a–334a–352a–380a
                  309                         309–329–349–369–389
                  309a                        309a–329a–349a–369a–389a
                  310                         310–330–350–370–390
                  310a                        310a–330a–350a–370a
                  321                         321–331–341–361–381
                  321a                        321a–331a–341a–361a–381a
                  328                         328–348–358–368–388
                  328a                        328a–348a–358a–368a–388a
                  Single Channels             317, 318, 326, 327, 332, 337, 338, 356, 371, 372
                                              317a, 318a, 326a, 327a, 332a, 337a, 338a, 356a, 371a

     (b) Unless otherwise specified, the channels listed in Table 2 are available to applicants eligible in the
         Industrial/Business Pool of subpart C of this part but exclude Special Mobilized Radio Systems as defined
         in § 90.603(c). 800 MHz high density cellular systems as defined in § 90.7 are prohibited on these
         channels. These frequencies are available in non-border areas. Specialized Mobile Radio (SMR) systems
         will not be authorized on these frequencies. These channels are available for inter-category sharing as
         indicated in § 90.621(e).

            Table 2—Business/Industrial/Land Transportation Pool 806–816/851–861
                                     MHz Band Channels

           [200 Channels]

             Group
                                                                 Channel Nos.
              No.
           322           322–362–402–442–482.
           322a          322a–362a–402a–442a–482a.
           323           323–363–403–443–483.
           323a          323a–363a–403a–443a–483a.

47 CFR 90.617(b) (enhanced display)                                                                   page 411 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.617(b)(1)
Private Land Mobile Radio Services

             Group
                                                                 Channel Nos.
              No.
           324         324–364–404–444–484.
           324a        324a–364a–404a–444a–484a.
           325         325–365–405–445–485.
           325a        325a–365a–405a–445a–485a.
           326         326–366–406–446–486.
           326a        326a–366a–406a–446a–486a.
           327         327–367–407–447–487.
           327a        327a–367a–407a–447a–487a.
           342         342–382–422–462–502.
           342a        342a–382a–422a–462a–502a.
           343         343–383–423–463–503.
           343a        343a–383a–423a–463a–503a.
           344         344–384–424–464–504.
           344a        344a–384a–424a–464a–504a.
           345         345–385–425–465–505.
           345a        345a–385a–425a–465a–505a.
           346         346–386–426–466–506.
           346a        346a–386a–426a–466a–506a.
           347         347–387–427–467–507.
           347a        347a–387a–427a–467a–507a.
           Single   261, 271, 281, 291, 301, 262, 272, 282, 292, 302, 263, 273, 283, 293, 303, 264, 274, 284, 294,
           Channels 304, 265, 275, 285, 295, 305, 266, 276, 286, 296, 306, 267, 277, 287, 297, 307, 268, 278, 288,
                    298, 308.
                       261a, 271a, 281a, 291a, 301a, 262a, 272a, 282a, 292a, 302a, 263a, 273a, 283a, 293a, 303a,
                       264a, 274a, 284a, 294a, 304a, 265a, 275a, 285a, 295a, 305a, 266a, 276a, 286a, 296a, 306a,
                       267a, 277a, 287a, 297a, 307a, 268a, 278a, 288a, 298a, 308a.

           (1) Except as provided in paragraph (b)(2) of this section, the channels listed in Table 2A are available in
               the counties listed in § 90.614(c) to eligible applicants in the Industrial/Business Pool of subpart C
               of this part but exclude Special Mobilized Radio Systems as defined in § 90.603(c). 800 MHz high
               density cellular systems as defined in § 90.7 are prohibited on these channels. These channels are
               available for intercategory sharing as indicated in § 90.621(e).

                       Table 2A—Business/Industrial/Land Transportation Pool 806–813.5/
                             851–858.5 MHz Band for Channels in Southeastern U.S.

                 [137 Channels]

                                                                      Channel Nos.
                  Single   263, 264, 267, 268, 272, 273, 274, 275, 276, 277, 278, 281, 282, 283, 284, 287, 288, 291, 292,
                  Channels 293, 294, 295, 296, 297, 298, 301, 302, 303, 304, 305, 306, 307, 308, 346, 347, 362, 363, 364,

47 CFR 90.617(b)(1) (enhanced display)                                                                          page 412 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.617(b)(2)
Private Land Mobile Radio Services

                                                                      Channel Nos.
                            365, 366, 367, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394,
                            399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410
                            263a, 264a, 267a, 268a, 272a, 273a, 274a, 275a, 276a, 277a, 278a, 281a, 282a, 283a, 284a,
                            287a, 288a, 291a, 292a, 293a, 294a, 295a, 296a, 297a, 298a, 301a, 302a, 303a, 304a, 305a,
                            306a, 307a, 308a, 346a, 347a, 362a, 363a, 364a, 365a, 366a, 367a, 379a, 380a, 381a, 382a,
                            383a, 384a, 385a, 386a, 387a, 388a, 389a, 390a, 391a, 392a, 393a, 394a, 399a, 400a, 401a,
                            402a, 403a, 404a, 405a, 406a, 407a, 408a, 409a

           (2) The channels listed in Table 2B are available within 113 km (70 mi) of the center city coordinates of
               Atlanta, GA, to eligible applicants in the Industrial/Business Pool of subpart C of this part but exclude
               Special Mobilized Radio Systems as defined in § 90.603(c). The center city coordinates of Atlanta,
               GA—for the purposes of the rule—are defined as 33°44′55″ NL, 84°23′17″ WL. 800 MHz high density
               cellular systems as defined in § 90.7 are prohibited on these channels. These channels are available
               for intercategory sharing as indicated in § 90.621(e).

                      Table 2B—Business/Industrial/Land Transportation Pool 806–813.5/
                               851–858.5 MHz Band for Channels in Atlanta, GA

                [137 Channels]

                                                                      Channel Nos.
                 Single   263, 264, 265, 266, 267, 268, 271, 272, 273, 274, 275, 276, 277, 278, 281, 282, 283, 284, 287,
                 Channels 288, 291, 292, 293, 294, 295, 296, 297, 298, 301, 302, 303, 304, 305, 306, 307, 308, 342, 343,
                          344, 345, 346, 347, 362, 363, 364, 365, 366, 367, 382, 383, 384, 385, 386, 387, 391, 392, 393,
                          394, 399, 400, 401, 402, 403, 404, 405, 406, 407, 409, 410
                            263a, 264a, 265a, 266a, 267a, 268a, 271a, 272a, 273a, 274a, 275a, 276a, 277a, 278a, 281a,
                            282a, 283a, 284a, 287a, 288a, 291a, 292a, 293a, 294a, 295a, 296a, 297a, 298a, 301a, 302a,
                            303a, 304a, 305a, 306a, 307a, 308a, 342a, 343a, 344a, 345a, 346a, 347a, 362a, 363a, 364a,
                            365a, 366a, 367a, 382a, 383a, 384a, 385a, 386a, 387a, 391a, 392a, 393a, 394a, 399a, 400a,
                            401a, 402a, 403a, 404a, 405a, 406a, 407a, 409a

     (c) Except as specified in § 90.616, the channels listed in Table 3 of this section are available to applicants
         eligible in the Industrial Business Pool of subpart C of this part but exclude Specialized Mobile Radio
         Systems as defined in § 90.603(c). These frequencies are available in non-border areas. Specialized
         Mobile Radio (SMR) systems will not be authorized on these frequencies. These channels are available
         for intercategory sharing as indicated in § 90.621(e).

           For multi-channel systems, channels may be grouped vertically or horizontally as they appear in the
           following table.

47 CFR 90.617(c) (enhanced display)                                                                              page 413 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.617(d)
Private Land Mobile Radio Services

            Table 3—Business/Industrial/Land Transportation Pool 896–901/935–940
                                     MHZ Band Channels

           [199 channels]

                                                      Channel Nos.
           11–12–13–14–15                                     211–212–213–214–215
           16–17–18–19–20                                     216–217–218–219–220
           31–32–33–34–35                                     231–232–233–234–235
           36–37–38–39–40                                     236–237–238–239–240
           51–52–53–54–55                                     251–252–253–254–255
           56–57–58–59–60                                     256–257–258–259–260
           71–72–73–74–75                                     271–272–273–274–275
           76–77–78–79–80                                     276–277–278–279–280
           91–92–93–94–95                                     291–292–293–294–295
           96–97–98–99–100                                    296–297–298–299–300
           111–112–113–114–115                                311–312–313–314–315
           116–117–118–119–120                                316–317–318–319–320
           131–132–133–134–135                                331–332–333–334–335
           136–137–138–139–140                                336–337–338–339–340
           151–152–153–154–155                                351–352–353–354–355
           156–157–158–159–160                                356–357–358–359–360
           171–172–173–174–175                                371–372–373–374–375
           176–177–178–179–180                                376–377–378–379–380
           191–192–193–194–195                                391–392–393–394–395
           196–197–198–199–200                                396–397–398–399

     (d) Unless otherwise specified, the channels listed in Tables 4A and 4B are available only to eligibles in the
         SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. 800
         MHz high density cellular systems, as defined in § 90.7, are prohibited on these channels. These
         frequencies are available in non-border areas. The spectrum blocks listed in Table 4A are available for EA-
         based services (as defined by § 90.681) prior to January 21, 2005. No new EA-based services will be
         authorized after January 21, 2005. EA-based licensees who operate non-high-density cellular systems
         prior to January 21, 2005, may choose to remain on these channels in the non-high-density cellular portion
         of the 800 MHz band (as defined in § 90.614). These licensees may continue to operate non-high-density
         cellular systems and will be grandfathered indefinitely. The channels listed in Table 4B will be available for
         site-based licensing after January 21, 2005, in any Economic Area where no EA-based licensee is
         authorized for these channels.

47 CFR 90.617(d) (enhanced display)                                                                     page 414 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                        47 CFR 90.617(d)
Private Land Mobile Radio Services

           Table 4A—EA-Based SMR Category 806–816/851–861 MHz Band Channels,
                             Available Prior to January 21, 2005

           [80 Channels]

                           Spectrum block                                Channel Nos.
           G                                       311–351–391–431–471
           H                                       312–352–392–432–472
           I                                       313–353–393–433–473
           J                                       314–354–394–434–474
           K                                       315–355–395–435–475
           L                                       316–356–396–436–476
           M                                       317–357–397–437–477
           N                                       318–358–398–438–478
           O                                       331–371–411–451–491
           P                                       332–372–412–452–492
           Q                                       333–373–413–453–493
           R                                       334–374–414–454–494
           S                                       335–375–415–455–495
           T                                       336–376–416–456–496
           U                                       337–377–417–457–497
           V                                       338–378–418–458–498

            Table 4B—SMR Category 806–816/851–861 MHz Band Channels, Available
                       After January 21, 2005, for Site-Based Licensing

           [160 Channels]

               Group No.                                  Channel Nos.
           315              315–355–395–435–475.
           315a             315a–355a–395a–435a–475a.
           316              316–356–396–436–476.
           316a             316a–356a–396a–436a–476a.
           317              317–357–397–437–477.
           317a             317a–357a–397a–437a–477a.
           318              318–358–398–438–478.
           318a             318a–358a–398a–438a–478a.
           331              331–371–411–451–491.
           331a             331a–371a–411a–451a–491a.
           332              332–372–412–452–492.
           332a             332a–372a–412a–452a–492a.

47 CFR 90.617(d) (enhanced display)                                                      page 415 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.617(d)(1)
Private Land Mobile Radio Services

            Group No.                                             Channel Nos.
           333           333–373–413–453–493.
           333a          333a–373a–413a–453a–493a.
           334           334–374–414–454–494.
           334a          334a–374a–414a–454a–494a.
           335           335–375–415–455–495.
           335a          335a–375a–415a–455a–495a.
           336           336–376–416–456–496.
           336a          336a–376a–416a–456a–496a.
           337           337–377–417–457–497.
           337a          337a–377a–417a–457a–497a.
           338           338–378–418–458–498.
           338a          338a–378a–418a–458a–498a
           Single        431, 432, 433, 434, 471, 472, 473, 474, 479, 480, 481, 488, 489, 490, 499, 500, 501, 508, 509,
           Channels      510.
                         431a, 432a, 433a, 434a, 471a, 472a, 473a, 474a, 479a, 480a, 481a, 488a, 489a, 490a, 499a,
                         500a, 501a, 508a, 509a, 510a.

           (1) Except as provided in paragraph (d)(2) of this section, the channels listed in Table 4C are available in
               the counties listed in § 90.614(c) for non-high-density cellular operations only to eligibles in the SMR
               category—which consists of Specialized Mobile Radio (SMR) stations and eligible end users. 800
               MHz high density cellular systems as defined in § 90.7 are prohibited on these channels. These
               channels are available for intercategory sharing as indicated in § 90.621(e).

                     Table 4C—SMR Category 806–813.5/851–858.5 MHz Band Channels
                    Available for Site-Based Licensing in Southeastern U.S. After January 21,
                                                      2005

                 [22 Channels]

                                                                             Channel Nos.
                  Single Channels        371, 373, 374, 375, 376, 377, 378, 395, 396, 397, 398.
                                         371a, 373a, 374a, 375a, 376a, 377a, 378a, 395a, 396a, 397a, 398a.

           (2) The channels listed in Table 4D are available within 113 km (70 mi) of the center city coordinates of
               Atlanta, GA, only to eligibles in the SMR category—which consists of Specialized Mobile Radio (SMR)
               stations and eligible end users. The center city coordinates of Atlanta, GA—for the purposes of this
               rule—are defined as 33°44′55″ NL, 84°23′17″ WL. 800 MHz high density cellular systems as defined in
               § 90.7 are prohibited on these channels. These channels are available for intercategory sharing as
               indicated in § 90.621(e). 800 MHz high density cellular systems as defined in § 90.7 are prohibited
               on these channels. These channels are available for intercategory sharing as indicated in §
               90.621(e).

47 CFR 90.617(d)(2) (enhanced display)                                                                           page 416 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.617(e)
Private Land Mobile Radio Services

                        Table 4D—SMR Category 806–813.5/851–858.5 MHz Band Channels
                       Available for Site-Based Licensing in Atlanta, GA after January 21, 2005

                [22 Channels]

                                                                            Channel Nos.
                 Single Channels        373, 374, 375, 376, 377, 378, 395, 396, 397, 398, 408.
                                        373a, 374a, 375a, 376a, 377a, 378a, 395a, 396a, 397a, 398a, 408a.

     (e) The Channels listed in § 90.614(b) and (c) are available to eligibles in the SMR category—which consists
         of Specialized Mobile Radio (SMR) stations and eligible end users. ESMR licensees which employ an 800
         MHz high density cellular system, as defined in § 90.7, are permitted to operate on these channels in non-
         border areas. ESMR licensees authorized prior to January 21, 2005, may continue to operate, if they so
         choose, on the channels listed in Table 5. These licensees will be grandfathered indefinitely.

                  Table 5—ESMR Category 816–821 MHz Band Channels for Cellular
                  Operations in Non-Border Areas Available Prior to January 21, 2005

           [200 Channels]

                             Spectrum block                                          Channel Nos.
           A                                                     511 through 530.
           B                                                     531 through 590.
           C                                                     591 through 710.

     (f) Except as specified in § 90.616, the channels listed in Table 6 of this section are available for operations
         only to eligibles in the SMR category—which consists of Specialized Mobile Radio (SMR) stations and
         eligible end users. These frequencies are available in non-border areas. The spectrum blocks listed below
         are available for EA-based services according to § 90.681.

                    Table 6—SMR Category 896–901/935–940 MHz Band Channels

           [200 channels]

               Block                                             Channel Nos.
           A              1–2–3–4–5–6–7–8–9–10
           B              21–22–23–24–25–26–27–28–29–30
           C              41–42–43–44–45–46–47–48–49–50
           D              61–62–63–64–65–66–67–68–69–70
           E              81–82–83–84–85–86–87–88–89–90
           F              101–102–103–104–105–106–107–108–109–110
           G              121–122–123–124–125–126–127–128–129–130
           H              141–142–143–144–145–146–147–148–149–150

47 CFR 90.617(f) (enhanced display)                                                                          page 417 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.617(g)
Private Land Mobile Radio Services

               Block                                          Channel Nos.
           I             161–162–163–164–165–166–167–168–169–170
           J             181–182–183–184–185–186–187–188–189–190
           K             201–202–203–204–205–206–207–208–209–210
           L             221–222–223–224–225–226–227–228–229–230
           M             241–242–243–244–245–246–247–248–249–250
           N             261–262–263–264–265–266–267–268–269–270
           O             281–282–283–284–285–286–287–288–289–290
           P             301–302–303–304–305–306–307–308–309–310
           Q             321–322–323–324–325–326–327–328–329–330
           R             341–342–343–344–345–346–347–348–349–350
           S             361–362–363–364–365–366–367–368–369–370
           T             381–382–383–384–385–386–387–388–389–390

     (g) In a given NPSPAC region, channels below 471 listed in Tables 2 and 4B which are vacated by licensees
         relocating to channels 551–830 and which remain vacant after band reconfiguration will be available as
         indicated in § 90.617(g)(1 through 3). The only exception will be for the counties listed in § 90.614(c). At
         locations greater then 113 km (70 mi) from the center city coordinates of Atlanta, GA within the counties
         listed in § 90.614(c), the channels listed in Tables 2A and 4C which are vacated by licensees relocating to
         channels 411–830 and which remain vacant after band reconfiguration will be available as indicated in §
         90.617(g)(1 through 3). At locations within 113 km (70 mi) of the center city coordinates of Atlanta, GA,
         the channels listed in Tables 2B and 4D which are vacated by licensees relocating to channels 411–830
         and which remain vacant after band reconfiguration will be available as follows:

           (1) Only to eligible applicants in the Public Safety Category until three years after the release of a public
               notice announcing the completion of band reconfiguration in that region;

           (2) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three
               to five years after the release of a public notice announcing the completion of band reconfiguration
               in that region;

           (3) Five years after the release of a public notice announcing the completion of band reconfiguration in
               that region, these channels revert back to their original pool categories.

     (h) In a given 800 MHz NPSPAC region—except for the counties listed in § 90.614(c)—channels below 471
         listed in Tables 2 and 4B which are vacated by a licensee relocating to channels 511–550 and remain
         vacant after band reconfiguration will be available as follows:

           (1) Only to eligible applicants in the Public Safety Category until three years after the release of a public
               notice announcing the completion of band reconfiguration in that region;

           (2) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories from three
               to five years after the release of a public notice announcing the completion of band reconfiguration
               in that region;

           (3) Five years after the release of a public notice announcing the completion of band reconfiguration in
               that region, these channels revert back to their original pool categories.

47 CFR 90.617(h)(3) (enhanced display)                                                                     page 418 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.617(i)
Private Land Mobile Radio Services

     (i)    Special Mobilized Radio Systems licensees who operate systems, other than 800 MHz high density
            cellular systems, on any of the public safety channels listed in Table 1 prior to January 21, 2005, are
            grandfathered and may continue to operate on these channels indefinitely. These grandfathered licensees
            will be prohibited from operating 800 MHz high density cellular systems as defined in § 90.7. Site-based
            licensees who are grandfathered on any of the public safety channels listed in Table 1 may modify their
            license only if they obtain concurrence from a certified public safety coordinator in accordance with §
            90.175(c). Grandfathered EA-based licensees, however, are exempt from any of the frequency
            coordination requirements of § 90.175 as long as their operations remain within the Economic Area
            defined by their license in accordance with the requirements of § 90.683(a).

      (j)   Licensees operating 800 MHz high density cellular systems on the channels listed in § 90.614(a), prior to
            January 21, 2005, may elect to continue operating on these channels and will be permitted to continue
            operating 800 MHz high density cellular systems (as defined in § 90.7) in this portion of the band. These
            licensees will be grandfathered indefinitely subject to the provisions of §§ 90.673, 90.674 and 90.675.

     (k) Licensees may operate systems other than 800 MHz high density cellular systems (as defined in § 90.7)
         on Channels 511–550 at any location vacated by an EA-based SMR licensee. For operations on these
         channels, unacceptable interference (as defined in § 22.970 of this chapter and § 90.672) will be deemed
         to occur only at sites where the following median desired signals are received (rather than those specified
         in § 22.970(a)(1)(i) of this chapter and § 90.672(a)(1(i). The minimum required median desired signal, as
         measured at the R.F. input of the receiver, will be as follows:

            (1) Mobile units (except in Puerto Rico and the U.S. Virgin Islands):

                 (i)   For channels 511 to 524—the minimum median desired signal levels specified in §
                       22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) shall apply;

                 (ii) For channels 524 to 534—the minimum median desired signal level shall increase linearly from
                      the values specified in § 22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) to −70 dBm;

                 (iii) For channels 534 to 550—the minimum median desired signal level shall increase linearly from
                       −70 dBm to −65 dBm.

            (2) Portable units (except in Puerto Rico and the U.S. Virgin Islands):

                 (i)   For channels 511 to 524—the minimum median desired signal levels specified in §
                       22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) shall apply;

                 (ii) For channels 524 to 530—the minimum median desired signal level shall increase linearly from
                      the values specified in § 22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) to −80 dBm;

                 (iii) For channels 530 to 534—the minimum median desired signal level shall increase linearly from
                       −80 dBm to −70 dBm;

                 (iv) For channels 534 to 550—the minimum median desired signal level shall increase linearly from
                      −70 dBm to −65 dBm.

            (3) Mobile units operating in Puerto Rico and the U.S. Virgin Islands:

                 (i)   For channels 511 to 530—the minimum median desired signal levels specified in §
                       22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) shall apply;

                 (ii) For channels 531 to 534—the minimum median desired signal level shall increase linearly from
                      −80.2 dBm to −70 dBm;

47 CFR 90.617(k)(3)(ii) (enhanced display)                                                              page 419 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.617(k)(3)(iii)
Private Land Mobile Radio Services

                (iii) For channels 534 to 550—the minimum median desired signal level shall increase linearly from
                      −70 dBm to −65 dBm.

           (4) Portable units operating in Puerto Rico and the U.S. Virgin Islands:

                 (i)   For channels 511 to 530—the minimum median desired signal levels specified in §
                       22.970(a)(1)(i) of this chapter and § 90.672(a)(1)(i) shall apply;

                (ii) For channels 531 to 534—the minimum median desired signal level shall increase linearly from
                     −80 dBm to −70 dBm;

                (iii) For channels 534 to 550—the minimum median desired signal level shall increase linearly from
                      −70 dBm to −65 dBm.

     (l)   Applicants may begin to license interstitial pool channels (denoted with an “a” after the channel number)
           listed in paragraphs (a) through (d) of this section only after the Wireless Telecommunications Bureau
           and the Public Safety and Homeland Security Bureau jointly release a public notice announcing the
           availability of those channels for licensing in a National Public Safety Planning Advisory Committee
           region.

     (m) Incumbent licensees in the 470–512 MHz band in the urban areas specified in § 90.303 of the
         Commission's rules are given priority access over mutually exclusive applicants for a three-year period to
         all interstitial channel pairs in the public safety pool or the business/industrial/land transportation pool
         listed above for which they are eligible, provided that any relocating T-Band incumbent must commit to
         surrendering an equal amount of 470–512 MHz spectrum on a channel-for-channel basis. The three-year
         period begins on the date these channel pairs become available for licensing in a National Public Safety
         Planning Advisory Committee region. Priority access applies to any applicant seeking to license a base
         station within 80 kilometers (50 miles) or mobile units or control stations within 128 kilometers (80 miles)
         of the geographic center of the urbanized areas listed in § 90.303 of the Commission's rules.

[69 FR 67843, Nov. 22, 2004, as amended at 70 FR 6760, Feb. 8, 2005; 70 FR 76708, Dec. 28, 2005; 72 FR 39760, July 20, 2007; 75
FR 35317, June 22, 2010; 76 FR 11683, Mar. 3, 2011; 81 FR 30201, May 16, 2016; 83 FR 61100, Nov. 27, 2018; 85 FR 41417, July
10, 2020; 85 FR 43140, July 15, 2020]

§ 90.619 Operations within the U.S./Mexico and U.S./Canada border areas.
     (a) Use of frequencies in 800 MHz band in Mexico border region. All operations in the 806–824/851–869 MHz
         band within 110 km (68.35 miles) of the U.S./Mexico border (“Sharing Zone”) shall be in accordance with
         international agreements between the U.S. and Mexico.

47 CFR 90.619(a) (enhanced display)                                                                            page 420 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.619(a)(1)
Private Land Mobile Radio Services

           (1) The U.S. and Mexico divide primary access to channels in the Sharing Zone as indicated in Table A1
               below.

                            Table A1—U.S. and Mexico Primary Channels in Sharing Zone

                            Channels                                          Primary access
                 1–360                          U.S.
                 361–610                        Mexico.
                 611–830                        U.S.-Mexico Co-Primary.

           (2) Stations authorized on U.S. primary channels in the Sharing Zone are subject to the effective radiated
               power (ERP) and antenna height limits listed below in Table A2.

                    Table A2—Limits on Effective Radiated Power (ERP) and Antenna Height

                     Average of the antenna height above average terrain on       Maximum ERP in any direction toward
                     standard radials in the direction of the common border         the common border per 25 kHz
                                            (meters)1                                         (watts)
                 0 to 503                                                                                          500
                 Above 503 to 609                                                                                  350
                 Above 609 to 762                                                                                  200
                 Above 762 to 914                                                                                  140
                 Above 914 to 1066                                                                                 100
                 Above 1066 to 1219                                                                                 75
                 Above 1219 to 1371                                                                                 70
                 Above 1371 to 1523                                                                                 65
                 Above 1523                                                                                           5

                1
                  Standard radials are 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315° to True North. The height above
                average terrain on any standard radial is based upon the average terrain elevation above mean sea
                level.

           (3) Stations may be authorized on channels primary to Mexico in the Sharing Zone provided the
               maximum power flux density (PFD) at any point at or beyond the border does not exceed −107
               db(W/m2) per 25 kHz of bandwidth. Licensees may exceed this value only if all potentially affected
               counterpart operators in the other country agree to a higher PFD level.

           (4) Stations authorized on U.S.-Mexico co-primary channels in the Sharing Zone are permitted to exceed
               a maximum power flux density (PFD) of −107 db(W/m2) per 25 kHz of bandwidth at any point at or
               beyond the border only if all potentially affected counterpart operators of 800 MHz high density
               cellular systems, as defined in § 90.7, agree.

           (5) Channels in the Sharing Zone are available for licensing as indicated in Table A3 to this paragraph
               (a)(5).

47 CFR 90.619(a)(5) (enhanced display)                                                                    page 421 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.619(a)(5)(i)
Private Land Mobile Radio Services

                           Table A3—Eligibility Requirements for Channels in Sharing Zone

                       Channels                                    Eligibility requirements
                 1–230             Report and Order in Gen. Docket No. 87–112.
                 231–315a          Public Safety Pool.
                 316–550           General Category.
                 551–830           Special Mobilized Radio for 800 MHz High Density Cellular.

                 (i)   Channel numbers 1–230 are also available to eligible applicants in the Public Safety Category in
                       the Canada Border Regions. The assignment of these channels will be done in accordance with
                       the policies defined in the Report and Order of Gen. Docket No. 87–112 (See § 90.16). The
                       following channels are available only for mutual aid purposes as defined in Gen. Docket No.
                       87–112: Channels 1, 39, 77, 115, 153. Mobile and portable radios operating on the mutual aid
                       channels shall employ analog FM emission.

                (ii) Channels 231–315a are available to applicants eligible in the Public Safety Category which
                     consists of licensees eligible in the Public Safety Pool of subpart B of this part. 800 MHz high
                     density cellular systems as defined in § 90.7 are prohibited on these channels.

                (iii) Channels 316–550 are available in the General Category. All entities are eligible for licensing on
                      these channels. 800 MHz high density cellular systems as defined in § 90.7 are prohibited on
                      these channels.

                (iv) Channels 551–830 are available to applicants eligible in the SMR category—which consists of
                     Specialized Mobile Radio (SMR) stations and eligible end users. ESMR licensees who employ
                     800 MHz high density cellular systems, as defined in § 90.7, are permitted to operate on these
                     channels.

           (6) Stations located outside the Sharing Zone (i.e. greater than 110 km from the border) are subject to
               the channel eligibility requirements and provisions listed in §§ 90.615 and 90.617 except that
               stations in the following counties are exempt from the requirements of paragraph (k) of § 90.617:

               California: San Luis Obispo, Kern, San Bernardino, Santa Barbara, Ventura, Los Angeles, Orange and
                      Riverside.

     (b) Use of frequencies in 900 MHz Band in Mexico border region. All operations in the 896–901/935–940
         MHz band within the Mexico border region shall be in accordance with international agreements between
         the U.S. and Mexico.

           (1) Except as specified in § 90.616, the channels listed in Table 1 of this section are available to
               applicants eligible in the Industrial/Business Pool of subpart C of this part but exclude Specialized
               Mobile Radio Systems as defined in § 90.603(c). These frequencies are available within the Mexico
               border region. Specialized Mobile Radio (SMR) systems will not be authorized on these frequencies.
               For multi-channel systems, channels may be grouped vertically or horizontally as they appear in the
               following table. Channels numbered above 200 may be used only subject to the power flux density
               limits stated in paragraph (a)(2) of this section:

                       Table 1—United States/Mexico Border Area, Business/Industrial/Land
                               Transportation Pool 896–901/935–940 MHz Band

47 CFR 90.619(b)(1) (enhanced display)                                                                    page 422 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                  47 CFR 90.619(b)(2)
Private Land Mobile Radio Services

                [199 Channels]

                                                           Channel Nos.
                 11–12–13–14–15                                   131–132–133–134–135
                 16–17–18–19–20                                   136–137–138–139–140
                 31–32–33–34–35                                   231–232–233–234–235
                 36–37–38–39–40                                   236–237–238–239–240
                 51–52–53–54–55                                   171–172–173–174–175
                 56–57–58–59–60                                   176–177–178–179–180
                 71–72–74–75                                      271–272–273–274–275
                 76–77–78–79–80                                   276–277–278–279–280
                 91–92–93–94–95                                   211–212–213–214–215
                 96–97–98–99–100                                  216–217–218–219–220
                 111–112–113–114–115                              311–312–313–314–315
                 116–117–118–119–120                              316–317–318–319–320
                 151–152–153–154–155                              351–352–353–354–355
                 156–157–158–159–160                              356–357–358–359–360
                 191–192–193–194–195                              391–392–393–394–395
                 196–197–198–199–200                              396–397–398–399
                 251–252–253–254–255                              331–332–333–334–335
                 256–257–258–259–260                              336–337–338–339–340
                 291–292–293–294–295                              371–372–373–374–375
                 296–297–298–299–300                              376–377–378–379–380

           (2) Except as specified in § 90.616, the channels listed in Table 2 of this section are available for
               operations only to eligibles in the SMR category—which consists of Specialized Mobile Radio (SMR)
               stations and eligible end users. These frequencies are available in the Mexico border region. The
               spectrum blocks listed in the table below are available for EA-based services according to § 90.681.

                      Table 2—United States-Mexico Border Area, SMR Category 896–901/
                                             935–940 MHz Band

                [200 Channels]

                     Block                                       Channel Nos.
                 A             1–2–3–4–5–6–7–8–9–10
                 B             21–22–23–24–25–26–27–28–29–30
                 C             41–42–43–44–45–46–47–48–49–50
                 D             61–62–63–64–65–66–67–68–69–70
                 E             81–82–83–84–85–86–87–88–89–90
                 F             101–102–103–104–105–106–107–108–109–110
                 G             121–122–123–124–125–126–127–128–129–130

47 CFR 90.619(b)(2) (enhanced display)                                                                page 423 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                  47 CFR 90.619(b)(3)
Private Land Mobile Radio Services

                     Block                                          Channel Nos.
                 H             141–142–143–144–145–146–147–148–149–150
                 I             161–162–163–164–165–166–167–168–169–170
                 J             181–182–183–184–185–186–187–188–189–190
                 K             201–202–203–204–205–206–207–208–209–210
                 L             221–222–223–224–225–226–227–228–229–230
                 M             241–242–243–244–245–246–247–248–249–250
                 N             261–262–263–264–265–266–267–268–269–270
                 O             281–282–283–284–285–286–287–288–289–290
                 P             301–302–303–304–305–306–307–308–309–310
                 Q             321–322–323–324–325–326–327–328–329–330
                 R             341–342–343–344–345–346–347–348–349–350
                 S             361–362–363–364–365–366–367–368–369–370
                 T             381–382–383–384–385–386–387–388–389–390

                Channels numbered above 200 may only be used subject to the power flux density limits at or
                beyond the Mexico border as stated in paragraph (4) of this section.

           (3) The specific channels that are available for licensing in the band 896–901/935–940 MHz within the
               Mexico border region are subject to Effective Radiated Power (ERP) and Antenna Height limitations
               as indicated in Table 3 below.

                 Table 3—Limits of Effective Radiated Power (ERP) Corresponding to Antenna
                  Heights of Base Stations in the 896–901/935–940 MHz Bands Within 110
                               Kilometers (68.4 Miles) of the Mexican Border

                                     Antenna height above mean sea level                       ERP in watts
                                Meters                                Feet                     (maximum)
                 0–503                                                             0–1650                     500
                 504–609                                                       1651–2000                      350
                 610–762                                                       2001–2500                      200
                 764–914                                                       2501–3000                      140
                 915–1066                                                      3001–3500                      100
                 1067–1219                                                     3501–4000                       75
                 1220–1371                                                     4000–4500                       70
                 1372–1523                                                     4501–5000                       65
                 Above 1523                                                   Above 5000                         5

           (4) All channels in the 896–901/935–940 MHz band are available for assignment to U.S. stations within
               the Mexico border region if the maximum power flux density (pfd) of the station's transmitted signal
               at any point at or beyond the border does not exceed −107 dB (W/m2). The spreading loss must be
               calculated using the free space formula taking into account any antenna discrimination in the
               direction of the border. Authorizations for stations using channels allotted to Mexico on a primary
47 CFR 90.619(b)(4) (enhanced display)                                                               page 424 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.619(c)
Private Land Mobile Radio Services

                basis will be secondary to Mexican operations and conditioned to require that licensees take
                immediate action to eliminate any harmful interference resulting from the station's transmitted
                signal exceeding −107 dB (W/m2).

     (c) Use of 800 MHz Band in Canada Border Region. All operations in the 806–824/851–869 MHz band within
         140 km (87 miles) of the U.S./Canada border (“U.S./Canada border area”) shall be in accordance with
         international agreements between the U.S. and Canada.

           (1) The U.S./Canada border area is divided into the following geographical regions (“Canada Border
               Regions”). U.S. primary channels are shown in the table by region. The remaining channels are
               primary to Canada (“Canada Primary channels”).

                                                 Table C1—Geographical Regions

                 Region            Location (longitude)                          U.S. primary channels
                 1        66° W–71° W (0–100 km from border) 1–260, 561–710, 772–790 and 792–830.
                 2        71° W–80°30′ W (0–100 km from           1–170, 621–710 and 795–830.
                          border)
                 3        80°30′ W–85° W (0–100 km from           1–320, 501–710, 729–730, 732–750, 752–770, 772–790
                          border)                                 and 792–830.
                 4        85° W–121°30′ W (0–100 km from          1–260, 561–710, 772–790 and 792–830.
                          border)
                 5        121°30′ W–127° W (0–140 km from         1–260, 561–710, 772–790 and 792–830.
                          border)
                 6        127° W–143° W (0–100 km from            1–260, 561–710, 772–790 and 792–830.
                          border)
                 7A       66° W–71° W (100–140 km from            1–830.
                          border)
                 7A       80°30′ W–121°30′ W (100–140 km          1–830.
                          from border)
                 7B       71° W–80°30′ W (100–140 km from         1–830.
                          border)
                 8        127° W–143° W (100–140 km from          1–830.
                          border)

           (2) Stations authorized on U.S. primary channels in all Canada Border Regions, except Region 5, will be
               subject to the Effective Radiated Power (ERP) and Effective Antenna Height (EAH) limitations listed
               in Table C2. The Effective Antenna Height is calculated by subtracting the Assumed Average Terrain
               Elevation (AATE) listed in Table C3 from the antenna height above mean sea level.

                      Table C2—Limits of Effective Radiated Power (ERP) Corresponding to
                        Effective Antenna Heights (EAH) for Regions 1, 2, 3, 4, 6, 7 and 8

                                         Effective Antenna Height (EAH)                             ERP watts
                                Metres                                    Feet                     (maximum)
                 0–152                                    0–500                                                   500

47 CFR 90.619(c)(2) (enhanced display)                                                                   page 425 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                   47 CFR 90.619(c)(2)
Private Land Mobile Radio Services

                                         Effective Antenna Height (EAH)                                      ERP watts
                                 Metres                                    Feet                             (maximum)
                 153–305                                    501–1000                                                             125
                 306–457                                    1001–1500                                                             40
                 458–609                                    1501–2000                                                             20
                 610–914                                    2001–3000                                                             10
                 915–1066                                   3001–3500                                                              6
                 Above 1967                                 Above 3501                                                             5

                 Table C3—Assumed Average Terrain Elevation (AATE) Along the U.S.-Canada
                                                Border

                                                                                    Assumed average terrain elevation
                      Longitude (Φ)                 Latitude (Ω)
                                                                            United States                      Canada
                         (°West)                      (°North)
                                                                         Feet            Metres         Feet            Metres
                 65 ≤Φ <69                    Ω <45                             0                   0          0                   0
                 ”                            45 ≤Ω <46                     300                    91       300                   91
                 ”                            Ω ≥46                        1000                   305      1000                  305
                 69 ≤Φ <73                    All                          2000                   609      1000                  305
                 73 ≤Φ <74                    ”                             500                   152       500                  152
                 74 ≤Φ <78                    ”                             250                    76       250                   76
                 78 ≤Φ <80                    Ω <43                         250                    76       250                   76
                 ”                            Ω ≥43                         500                   152       500                  152
                 80 ≤Φ <90                    All                           600                   183       600                  183
                 90 ≤Φ <98                    ”                            1000                   305      1000                  305
                 98 ≤Φ <102                   ”                            1500                   457      1500                  457
                 102 ≤Φ <108                  ”                            2500                   762      2500                  762
                 108 ≤Φ <111                  ”                            3500               1066         3500               1066
                 111 ≤Φ <113                  ”                            4000               1219         3500               1066
                 113 ≤Φ <114                  ”                            5000               1524         4000               1219
                 114 ≤Φ <121.5                ”                            3000                   914      3000                  914
                 121.5 ≤Φ <127                ”                                 0                   0          0                   0
                 Φ ≥127                       54 ≤Ω <56                         0                   0          0                   0
                 ”                            56 ≤Ω <58                     500                   152      1500                  457
                 ”                            58 ≤Ω <60                         0                   0      2000                  609
                 ”                            60 ≤Ω <62                    4000               1219         2500                  762
                 ”                            62 ≤Ω <64                    1600                   488      1600                  488
                 ”                            64 ≤Ω <66                    1000                   305      2000                  609
                 ”                            66 ≤Ω <68                     750                   228       750                  228
                 ”                            68 ≤Ω <69.5                  1500                   457       500                  152
                 ”                            Ω ≥69.5                           0                   0          0                   0

47 CFR 90.619(c)(2) (enhanced display)                                                                                page 426 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.619(c)(3)
Private Land Mobile Radio Services

           (3) Stations authorized on U.S. primary channels in Canada Border Region 5 will be subject to the
               Effective Radiated Power (ERP) and Antenna Height Above Mean Sea Level limitations listed in Table
               C4.

                      Table C4—Limits of Effective Radiated Power (ERP) Corresponding to
                              Antenna Height Above Mean Sea Level for Region 5

                                      Antenna Height Above Mean Sea Level                             ERP Watts
                                 Metres                                     Feet                     (maximum)
                 0–503                                  0–1650                                                       500
                 504–609                                1651–2000                                                    350
                 610–762                                2001–2500                                                    200
                 763–914                                2501–3000                                                    140
                 915–1066                               3001–3500                                                    100
                 1067–1219                              3501–4000                                                     75
                 1220–1371                              4001–4500                                                     70
                 1372–1523                              4501–5000                                                     65
                 Above 1523                             Above 5000                                                     5

           (4) Stations may be authorized on Canada Primary channels in the Canada Border Regions provided the
               maximum power flux density (PFD) per 25 kHz at or beyond the border does not exceed −107 dB(W/
               m2). Stations authorized on Canada Primary channels will be secondary to stations in Canada
               unless otherwise specified in an international agreement between the U.S. and Canada.

           (5) Stations authorized to operate within 30 kilometers of the center city coordinates listed in Table C5
               may operate according to the band plan for Canadian Border Regions 7A and 7B as indicated below.

                 Table C5—Cities That Are Considered To Fall Within Candian Border Region 7

                                                              Coordinates
                           Location                                                         Canadian border region
                                                   Latitude             Longitude
                 Akron, Ohio                  41°05′00.2″ N                 81°30′39.4″ W                            7A
                 Youngstown, Ohio             41°05′57.2″ N                 80°39′01.3″ W                            7A
                 Syracuse, New York           43°03′04.2″ N                 76°09′12.7″ W                            7B

           (6) The channels listed in Table C6 and paragraph (c)(6)(i) of this section are available in the Canada
               Border Regions for non-cellular operations to eligible applicants in the Public Safety Category which
               consists of licensees eligible in the Public Safety Pool of subpart B of this part. 800 MHz high
               density cellular systems as defined in § 90.7 are prohibited on these channels.

47 CFR 90.619(c)(6) (enhanced display)                                                                    page 427 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.619(c)(6)
Private Land Mobile Radio Services

                 Table C6—Public Safety Pool 806–816/851–861 MHz Band Channels in the
                                         Canada Border Regions

                 Canada
                                                                                                                       Total
                 border                                        Channel Nos.
                                                                                                                    (channels)
                 region
                 Regions 231–260a                                                                                           60
                 1, 4, 5
                 and 6
                 Region    See paragraph (c)(6)(i) of this section
                 2
                 Region    231–320a, 501–508a                                                                             180
                 3
                 Regions 269, 289, 311, 399, 439, 270, 290, 312, 400, 440, 279, 299, 319, 339, 359, 280, 300,             139
                 7A and 320, 340, 360, 309, 329, 349, 369, 389, 310, 330, 350, 370, 390, 313, 353, 393, 441,
                 8       461, 314, 354, 394, 448, 468, 321, 341, 361, 381, 419, 328, 348, 368, 388, 420, 351,
                         379, 409, 429, 449, 352, 380, 410, 430, 450, 391, 392, 401, 408, 421, 428, 459, 460,
                         469, 470
                           269a, 289a, 311a, 399a, 439a, 270a, 290a, 312a, 400a, 440a, 279a, 299a, 319a,
                           339a, 359a, 280a, 300a, 320a, 340a, 360a, 309a, 329a, 349a, 369a, 389a, 310a,
                           330a, 350a, 370a, 390a, 313a, 353a, 393a, 441a, 461a, 314a, 354a, 394a, 448a,
                           468a, 321a, 341a, 361a, 381a, 419a, 328a, 348a, 368a, 388a, 420a, 351a, 379a,
                           409a, 429a, 449a, 352a, 380a, 410a, 430a, 450a, 391a, 392a, 401a, 408a, 421a,
                           428a, 459a, 460a, 469a
                 Region    231–260, 269, 289, 311, 399, 439, 270, 290, 312, 400, 440, 279, 299, 319, 339, 359,            339
                 7B        280, 300, 320, 340, 360, 309, 329, 349, 369, 389, 310, 330, 350, 370, 390, 313, 353,
                           393, 441, 461, 314, 354, 394, 448, 468, 315, 355, 395, 435, 475, 316, 356, 396, 436,
                           476, 317, 357, 397, 437, 477, 318, 358, 398, 438, 478, 321, 341, 361, 381, 419, 328,
                           348, 368, 388, 420, 331, 371, 411, 451, 491, 332, 372, 412, 452, 492, 333, 373, 413,
                           453, 493, 334, 374, 414, 454, 494, 335, 375, 415, 455, 495, 336, 376, 416, 456, 496,
                           337, 377, 417, 457, 497, 338, 378, 418, 458, 498, 351, 379, 409, 429, 449, 352, 380,
                           410, 430, 450, 391, 392, 401, 408, 421, 428, 459, 460, 469, 470, 431, 432, 433, 434,
                           471, 472, 473, 474, 479, 480
                           231a–260a, 269a, 289a, 311a, 399a, 439a, 270a, 290a, 312a, 400a, 440a, 279a,
                           299a, 319a, 339a, 359a, 280a, 300a, 320a, 340a, 360a, 309a, 329a, 349a, 369a,
                           389a, 310a, 330a, 350a, 370a, 390a, 313a, 353a, 393a, 441a, 461a, 314a, 354a,
                           394a, 448a, 468a, 315a, 355a, 395a, 435a, 475a, 316a, 356a, 396a, 436a, 476a,
                           317a, 357a, 397a, 437a, 477a, 318a, 358a, 398a, 438a, 478a, 321a, 341a, 361a,
                           381a, 419a, 328a, 348a, 368a, 388a, 420a, 331a, 371a, 411a, 451a, 491a, 332a,
                           372a, 412a, 452a, 492a, 333a, 373a, 413a, 453a, 493a, 334a, 374a, 414a, 454a,
                           494a, 335a, 375a, 415a, 455a, 495a, 336a, 376a, 416a, 456a, 496a, 337a, 377a,
                           417a, 457a, 497a, 338a, 378a, 418a, 458a, 498a, 351a, 379a, 409a, 429a, 449a,
                           352a, 380a, 410a, 430a, 450a, 391a, 392a, 401a, 408a, 421a, 428a, 459a, 460a,
                           469a, 431a, 432a, 433a, 434a, 471a, 472a, 473a, 474a, 479a, 480a

47 CFR 90.619(c)(6) (enhanced display)                                                                            page 428 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                   47 CFR 90.619(c)(6)(i)
Private Land Mobile Radio Services

                 (i)   Channel numbers 1–230 are also available to eligible applicants in the Public Safety Category in
                       the Canada Border Regions. The assignment of these channels will be done in accordance with
                       the policies defined in the Report and Order of Gen. Docket No. 87–112 (See § 90.16). The
                       following channels are available only for mutual aid purposes as defined in Gen. Docket No.
                       87–112: Channels 1, 39, 77, 115, 153. Mobile and portable radios operating on the mutual aid
                       channels shall employ analog FM emission.

                (ii) [Reserved]

           (7) The channels listed in Table C7 are available in the Canada Border Regions for the General Category.
               All entities will be eligible for licensing on these channels. 800 MHz high density cellular systems as
               defined in § 90.7 are permitted on these channels only as indicated in Table C7. The channels noted
               for Regions 1, 2, 3, 4, 5 and 6 where high density cellular systems are prohibited are all frequencies
               that are primary to Canada. Stations may be licensed on these Canada Primary channels according
               to paragraph (c)(4) of this section.

                  Table C7—General Category 806–821/851–866 MHz Band Channels in the
                                         Canada Border Regions

                                   General category channels where 800 MHz   General category channels where 800 MHz
                     Canada                   high density cellular                     high density cellular
                  border region                   systems are                               systems are
                                                   prohibited                                permitted
                 Regions 1, 4, 5                                  261–560                                   561–710
                 and 6
                 Region 2                                         231–620                                   621–710
                 Region 3                                        321–500a                                   509–710
                 Regions 7A                            231–260a, 511–550                                        None
                 and 8
                 Region 7B                                        511–550                                       None

           (8) The channels listed in Table C8 are available in the Canada Border Regions to applicants eligible in
               the Industrial/Business Pool of subpart C of this part but exclude Special Mobilized Radio Systems
               as defined in § 90.603(c). 800 MHz cellular high density systems as defined in § 90.7 are prohibited
               on these channels.

                 Table C8—Business/Industrial/Land Transportation Pool 806–816/851–861
                            MHz Band Channels in the Canada Border Regions

                 Canada
                                                                                                              Total
                 border                                     Channel Nos.
                                                                                                           (channels)
                 region
                 Regions None                                                                                       0
                 1, 2, 3,
                 4, 5 and
                 6

47 CFR 90.619(c)(8) (enhanced display)                                                                   page 429 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.619(c)(9)
Private Land Mobile Radio Services

                 Canada
                                                                                                                     Total
                 border                                        Channel Nos.
                                                                                                                  (channels)
                 region
                 Regions 261, 271, 281, 291, 301, 262, 272, 282, 292, 302, 263, 273, 283, 293, 303, 264, 274,           200
                 7A, 7B  284, 294, 304, 265, 275, 285, 295, 305, 266, 276, 286, 296, 306, 267, 277, 287, 297,
                 and 8   307, 268, 278, 288, 298, 308, 322, 362, 402, 442, 482, 323, 363, 403, 443, 483, 324,
                         364, 404, 444, 484, 325, 365, 405, 445, 485, 326, 366, 406, 446, 486, 327, 367, 407,
                         447, 487, 342, 382, 422, 462, 502, 343, 383, 423, 463, 503, 344, 384, 424, 464, 504,
                         345, 385, 425, 465, 505, 346, 386, 426, 466, 506, 347, 387, 427, 467, 507
                           261a, 271a, 281a, 291a, 301a, 262a, 272a, 282a, 292a, 302a, 263a, 273a, 283a,
                           293a, 303a, 264a, 274a, 284a, 294a, 304a, 265a, 275a, 285a, 295a, 305a, 266a,
                           276a, 286a, 296a, 306a, 267a, 277a, 287a, 297a, 307a, 268a, 278a, 288a, 298a,
                           308a, 322a, 362a, 402a, 442a, 482a, 323a, 363a, 403a, 443a, 483a, 324a, 364a,
                           404a, 444a, 484a, 325a, 365a, 405a, 445a, 485a, 326a, 366a, 406a, 446a, 486a,
                           327a, 367a, 407a, 447a, 487a, 342a, 382a, 422a, 462a, 502a, 343a, 383a, 423a,
                           463a, 503a, 344a, 384a, 424a, 464a, 504a, 345a, 385a, 425a, 465a, 505a, 346a,
                           386a, 426a, 466a, 506a, 347a, 387a, 427a, 467a, 507a

           (9) The channels listed in Table C9 are available in the Canada Border Regions to applicants eligible in
               the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end
               users. 800 MHz high density cellular systems, as defined in § 90.7, are prohibited on these channels.

                   Table C9—SMR Category 806–816/851–861 MHz Channels Available for
                            Site-Based Licensing in the Canada Border Regions

                 Canada
                                                                                                                     Total
                 border                                        Channel Nos.
                                                                                                                  (channels)
                 region
                 Regions None                                                                                              0
                 1, 2, 3,
                 4, 5 and
                 6
                 Regions 315, 355, 395, 435, 475, 316, 356, 396, 436, 476, 317, 357, 397, 437, 477, 318, 358,           160
                 7A and 398, 438, 478, 331, 371, 411, 451, 491, 332, 372, 412, 452, 492, 333, 373, 413, 453,
                 8       493, 334, 374, 414, 454, 494, 335, 375, 415, 455, 495, 336, 376, 416, 456, 496, 337,
                         377, 417, 457, 497, 338, 378, 418, 458, 498, 431, 432, 433, 434, 471, 472, 473, 474,
                         479, 480, 481, 488, 489, 490, 499, 500, 501, 508, 509, 510
                           315a, 355a, 395a, 435a, 475a, 316a, 356a, 396a, 436a, 476a, 317a, 357a, 397a,
                           437a, 477a, 318a, 358a, 398a, 438a, 478a, 331a, 371a, 411a, 451a, 491a, 332a,
                           372a, 412a, 452a, 492a, 333a, 373a, 413a, 453a, 493a, 334a, 374a, 414a, 454a,
                           494a, 335a, 375a, 415a, 455a, 495a, 336a, 376a, 416a, 456a, 496a, 337a, 377a,
                           417a, 457a, 497a, 338a, 378a, 418a, 458a, 498a, 431a, 432a, 433a, 434a, 471a,
                           472a, 473a, 474a, 479a, 480a, 481a, 488a, 489a, 490a, 499a, 500a, 501a, 508a,
                           509a, 510a
                 Region    481, 488, 489, 490, 499, 500, 501, 508, 509, 510.                                              20
                 7B

47 CFR 90.619(c)(9) (enhanced display)                                                                          page 430 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.619(c)(10)
Private Land Mobile Radio Services

                 Canada
                                                                                                                   Total
                 border                                       Channel Nos.
                                                                                                                (channels)
                 region
                            481a, 488a, 489a, 490a, 499a, 500a, 501a, 508a, 509a, 510a.

          (10) The channels listed in Table C10 are available in the Canada Border Regions to applicants eligible in
               the SMR category—which consists of Specialized Mobile Radio (SMR) stations and eligible end
               users. ESMR licensees who employ 800 MHz high density cellular systems, as defined in § 90.7, are
               permitted to operate on these channels. Some of the channels listed in Table C10 are primary to
               Canada as indicated in paragraph (c)(1) of this section. ESMR systems may be authorized on these
               Canada Primary channels according to paragraph (c)(4) of this section.

                  Table C10—ESMR Category 817–824/862–869 MHz Channels Available for
                                    800 MHz High Density Systems

                              Canada Border Region                       Channel Nos.                   Total
                 Regions 1, 2, 3, 4, 5 and 6                       711–830                   120 Channels.
                 Regions 7A, 7B and 8                              551–830                   280 Channels.

          (11) In Canada Border Regions 1, 2, 3, 4, 5 and 6, the following General Category channels are available
               for licensing to all entities except as described below in paragraphs (c)(11)(i) and (c)(11)(ii): in
               Regions 1, 4, 5 and 6, channels 261–560; in Region 2, channels 231–620 and in Region 3, channels
               321–500.

                 (i)   In a given 800 MHz NPSPAC region, the General Category channels listed paragraph (c)(11) of
                       this section which are vacated by licensees relocating to channels 711–830 and which remain
                       vacant after band reconfiguration will be available for licensing as follows:

                       (A) Only to eligible applicants in the Public Safety Category until three years after the release
                           of a public notice announcing the completion of band reconfiguration in that region;

                       (B) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories
                           from three to five years after the release of a public notice announcing the completion of
                           band reconfiguration in that region; and

                       (C) To all entities five years after release of a public notice announcing the completion of band
                           reconfiguration in that region.

                (ii) The General Category channels listed in paragraph (c)(11) of this section are primary to
                     Canada. Stations may be authorized on these Canada Primary channels according to paragraph
                     (c)(4).

          (12) In Canada Border Regions 7A, 7B and 8, the following channels will be available as described in
               paragraphs (c)(12)(i) and (c)(12)(ii) of this section: for Canada Border Regions 7A and 8, channels
               231–260 and channels below 471 in Tables C8 and C9; for Canada Border Region 7B all channels in
               Tables C8 and C9.

47 CFR 90.619(c)(12) (enhanced display)                                                                      page 431 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.619(c)(12)(i)
Private Land Mobile Radio Services

                 (i)    In a given 800 MHz NPSPAC region, the channels listed paragraph (c)(12) of this section which
                        are vacated by licensees relocating to channels 511–830 and which remain vacant after band
                        reconfiguration will be available as follows:

                         (A) Only to eligible applicants in the Public Safety Category until three years after the release
                             of a public notice announcing the completion of band reconfiguration in that region; and

                         (B) Only to eligible applicants in the Public Safety or Critical Infrastructure Industry Categories
                             from three to five years after the release of a public notice announcing the completion of
                             band reconfiguration in that region.

                (ii) Five years after the release of a public notice announcing the completion of band
                     reconfiguration in a given 800 MHz NPSPAC region, the channels listed in paragraph (c)(12) of
                     this section will revert back to their original pool categories.

     (d) Use of 900 MHz Band in Canada Border Region. All operations in the 896–901/935–940 MHz band within
         the Canada border region shall be in accordance with international agreements between the U.S. and
         Canada. The following criteria shall govern the assignment of frequency pairs (channels) in the 896–901/
         935–940 MHz band for stations located in the U.S./Canada border area. They are available for
         assignments for conventional or trunked systems in accordance with applicable sections of this subpart.

           (1) Except as specified in § 90.616, channels 1–399, as listed in § 90.613 table of 896–901/935–940
               MHz Channel Designations, are available to eligible applicants for use in the U.S./Canada border
               area as shown in table 27.

                         Table 27—Channels in the 896–901/935–940 MHz Frequency Bands
                                     Available in the U.S./Canada Border Area

                       Region                          Location (longitude)                               Channels
                 1               66° W–71° W. (0–100 km from border)                                      1–200, 398, 399
                 2               71° W–80°30′ W (0–100 km from border)                                               1–120
                 3               80°30′ W–85° W (0–100 km from border)                                               1–340
                 4               85° W–121°30′ W (0–100 km from border)                                   1–200, 398, 399
                 5               121°30′ W–127° W (0–140 km from border)                                  1–200, 398, 399
                 6               127° W–143° W (0–100 km from border)                                     1–200, 398, 399
                 7               66° W–121°30′ W (100–140 km from border)                                            1–399
                 8               127° W–143° W (100–140 km from border)                                              1–399

                Note: For assignments in the 896–901/935–940 MHz bands, the cities of Akron, Ohio (41°05′00″ N,
                81°30′40″ W) and Youngstown, Ohio (41°05′57″ N, 80°39′02″ W) are considered outside of Region 3,
                and Syracuse, New York (43°03′04″ N, 76°09′14″ W) is considered outside of Region 2. These cities
                are defined as an area with the given center coordinates and encompassing a circle of 30 km
                radius.

           (2) All frequency assignments made pursuant to paragraph (d)(1) of this section shall comply with the
               requirements of § 90.619(b).

47 CFR 90.619(d)(2) (enhanced display)                                                                        page 432 of 516
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                                                                                                         47 CFR 90.619(d)(3)
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              (3) In Region 5, except as specified in § 90.616, channels 201–397 may be authorized in the United
                  States under the following conditions:

                   (i)   An assignment may be made if the predicted power flux density (PFD) of a proposed station's
                         signal does not exceed −107 dBW/m2 at the border. The prediction of the PFD is calculated
                         based upon a modified Longley-Rice point-to-point propagation model with time and location
                         variabilities of 10 percent[3] and 3-second digitized terrain date[4] .

                   (ii) Authorizations for Channels 201–397 in Region 5 are secondary to Canadian operations and
                        conditioned to require that licensees take immediate action to eliminate any harmful
                        interference resulting from the station's transmitted signal exceeding −107 dBW/m2 at or
                        beyond the U.S./Canada border.

              (4) Except as specified in § 90.616, channel assignments for stations to be located in the geographical
                  area in Region 1 enclosed by the United States-Canada border, the meridian 71° W and the line
                  beginning at the intersection of 44°25′ N, 71° W, then running by great circle arc to the intersection of
                  45° N, 70° W, then North along meridian 70° W to the intersection of 45°45′ N, then running West
                  along 45°45′ N to the intersection of the United States-Canada border, will be only for channels 121
                  through 160, inclusive, and will be limited to assignments with 11 kHz or less necessary bandwidth.
                  Coordination with Canada will be required for these channels.

              (5) Except as specified in § 90.616, channel assignments for stations to be located in the geographical
                  area in Region 3 enclosed by the meridian of 81° W longitude, the arc of a circle of 100 km radius
                  centered at 42°39′30″ N latitude and 81° W longitude at the northern shore of Lake Erie and drawn
                  clockwise from the southerly intersection with 80°30′ W longitude to intersect the United States-
                  Canada border West of 81° W, and the United States-Canada border, will be only for channels 121
                  through 230, inclusive, and will be limited to assignments with 11 kHz or less necessary bandwidth.
                  Coordination with Canada will be required for these channels. U.S. stations must protect Canadian
                  stations operating on channels 121 through 230 within an area of 30 km radius from the center city
                  coordinates (referenced to North American Datum 1983 (NAD83)) of London, Ontario (42°59′00.1″ N,
                  81°13′59.5″ W).

              (6) Additional channels available: Except as specified in § 90.616, the channels listed in table 28 are
                  available for assignment in Regions 1–6 if the maximum power flux density (PFD) of the station's
                  transmitted signal does not exceed the limits specified in tables 29 and 30 in this section. The
                  spreading loss shall be calculated using the free space formula taking into account any antenna
                  discrimination in the direction of the border.

                                            Table 28—Additional Channels Available

                   [Regions 1–6]

                         Region               Channel No.'s                        Effective radiated power
                    1                                      201–397 See Table 29
                    2                                      121–399 See Table 29

   [4]   See note 2, paragraph (c) of this section.
   [3]   See note 1, paragraph (c) of this section.

47 CFR 90.619(d)(6) (enhanced display)                                                                        page 433 of 516
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                        Region                Channel No.'s                         Effective radiated power
                 3                                          341–399 See Table 29
                 4                                          201–397 See Table 29
                 5                                          201–397 See Table 30
                 6                                          201–397 See Table 29

Authorizations for stations using these channels will be secondary to Canadian operations and conditioned to
require that licensees take immediate action to eliminate any harmful interference resulting from the station's
transmitted signal exceeding the values specified in tables 29 or 30 at or beyond the U.S./Canada border.

   Table 29—Maximum Power Flux Density (PFD) at the U.S./Canada Border
                Corresponding to Effective Antenna Height

[Regions 1, 2, 3, 4, and 6]

                      Effective antenna height (EAH)
                                                                                   PFD (dBW/m2)
               Feet                                Meters
 0–500                               0–152                                                            −84
 501–1000                            153–305                                                          −90
 1001–1500                           306–457                                                          −95
 1501–2000                           458–609                                                          −98
 2001–2500                           610–762                                                         −101
 2501–3000                           763–914                                                         −101
 3001–3500                           915–1066                                                        −103
 3501–4000                           1067–1219                                                       −104
 Above 4000                          Above 1219                                                      −104

   Table 30—Maximum Power Flux Density (PFD) at the U.S./Canada Border
           Corresponding to Antenna Height Above Mean Sea Level

[Region 5]

                     Antenna height above mean sea level
                                                                                    PFD (dBW/m2)
                Feet                                   Meters
 0–1650                                0–503                                                        −87.0
 1651–2000                             504–609                                                      −88.5
 2001–2500                             610–762                                                      −91.0
 2501–3000                             763–914                                                      −92.5
 3001–3500                             915–1066                                                     −94.0
 3501–4000                             1067–1219                                                    −95.0
 4001–4500                             1220–1371                                                    −95.5
 4501–5000                             1372–1523                                                    −96.0

47 CFR 90.619(d)(6) (enhanced display)                                                                         page 434 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.621
Private Land Mobile Radio Services

                   Antenna height above mean sea level
                                                                                PFD (dBW/m2)
                 Feet                                 Meters
 Above 5000                            Above 1523                                              −107.0

(Secs. 4(i) and 303, Communications Act, as amended, and 5 U.S.C. 553 (b)(3)(B) and (d)(1))

[47 FR 41032, Sept. 16, 1982; 47 FR 41045, Sept. 16, 1982]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.619, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.621 Selection and assignment of frequencies.
     (a) Applicants for frequencies in the Public Safety and Business/Industrial/Land Transportation Categories
         must specify on the application the frequencies on which the proposed system will operate pursuant to a
         recommendation by the applicable frequency coordinator. Applicants for frequencies in the SMR Category
         must request specific frequencies by including in their applications the frequencies requested.

           (1) For trunked systems, the assignment of frequencies will be made in accordance with applicable
               loading criteria and in accordance with the following:

                 (i)    Channels will be chosen and assigned in accordance with §§ 90.615, 90.617, or 90.619.

                 (ii) A mobile station is authorized to transmit on any frequency assigned to its associated base
                      station.

                (iii) There are no limitations on the number of frequencies that may be trunked. Authorizations for
                      non-SMR stations may be granted for up to 20 trunked frequency pairs at a time in accordance
                      with the frequencies listed in §§ 90.615, 90.617, and 90.619.

           (2) For conventional systems the assignment of frequencies will be made in accordance with applicable
               loading criteria. Accordingly, depending upon the number of mobile units to be served, an applicant
               may either be required to share a channel, or, if an applicant shows a sufficient number of mobile
               units to warrant the assignment of one or more channels for its exclusive use, it may be licensed to
               use such channel or channels on an unshared basis in the area of operation specified in its
               application.

                 (i)    Channels will be chosen and assigned in accordance with §§ 90.615, 90.617, or 90.619.

                 (ii) A mobile station is authorized to transmit on any frequency assigned to its associated base
                      station.

     (b) Stations authorized on frequencies listed in this subpart, except for those stations authorized pursuant to
         paragraph (g) of this section and EA-based and MTA-based SMR systems, will be assigned co-channel
         frequencies solely on the basis of distance between fixed stations. In addition, contour overlap as detailed
         in paragraph (d) of this section will be the basis for geographic separation between fixed stations
         operating on adjacent-channel frequencies in the 809–817 MHz/854–862 MHz sub-band, except where
         such fixed stations meet the distance separation criteria set out in this paragraph (b).

47 CFR 90.621(b) (enhanced display)                                                                     page 435 of 516
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                                                                                                          47 CFR 90.621(b)(1)
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           (1) Except as indicated in paragraph (b)(4) of this section, no station in Channel Blocks A through V shall
               be less than 169 km (105 mi) distant from a co-channel station that has been granted channel
               exclusivity and authorized 1 kW ERP on any of the following mountaintop sites: Santiago Peak, Sierra
               Peak, Mount Lukens, Mount Wilson (California). Except as indicated in paragraph (b)(4) of this
               section, no incumbent licensee in Channel Blocks F1 through V that has received the consent of all
               affected parties or a certified frequency coordinator to utilize an 18 dBµV/m signal strength
               interference contour shall be less than 229 km (142 mi) distant from a co-channel station that has
               been granted channel exclusivity and authorized 1 kW ERP on any of the following mountaintop
               sites: Santiago Peak, Sierra Peak, Mount Lukens, Mount Wilson (California).

           (2) The separation between co-channel stations that have been granted exclusivity and that are located
               at high sites in California north of 35° N Latitude and west of 118° W Longitude shall be determined
               as follows:

                 (i)   Required co-channel separations between common antenna sites are given by table 1. A
                       channel group assigned to a station on a site listed in the vertical column may not be re-
                       assigned to a station on a site listed in the horizontal column if there is an “X” in the box
                       created by the intersection of the vertical and horizontal lines. The geographic coordinates
                       listed in the table represent an average for each particular site; all locations within 1.6 km (1 mi)
                       of the coordinates will be considered to be at that site.

                (ii) Required co-channel separations involving antenna sites not listed in table 1 shall be
                     determined by Commission staff on a case by case basis. The interference potential of
                     proposed assignments will be evaluated considering parameters such as antenna height,
                     effective radiated power, terrain irregularities, and market conditions.

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                                                                                                   47 CFR 90.621(b)(3)
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           (3) Except as indicated in paragraph (b)(4) of this section, stations in Channel Blocks A through V that
               have been granted channel exclusivity and are located in the State of Washington at the locations
               listed in the table below shall be separated from co-channel stations by a minimum of 169 km (105
               mi). Except as indicated in paragraph (b)(4) of this section, incumbent licensees in Channel Blocks

47 CFR 90.621(b)(3) (enhanced display)                                                                page 437 of 516
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                                                                                                       47 CFR 90.621(b)(4)
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                  F1 through V that have received the consent of all affected parties or a certified frequency
                  coordinator to utilize an 18 dBµV/m signal strength interference contour, have been granted channel
                  exclusivity and are located in the State of Washington at the locations listed in the table below shall
                  be separated from co-channel stations by a minimum of 229 km (142 mi). Locations within one mile
                  of the geographical coordinates listed in the table below will be considered to be at that site.

                   Note: Coordinates are referenced to North American Datum 1983 (NAD83).

                   Site name                          North latitude              West longitude
 Mount Constitution                                           48° 40′ 47.4″               122° 50′ 28.7″
 Lyman Mountain                                               48° 35′ 41.4″               122° 09′ 39.6″
 Cultus Mountain                                              48° 25′ 30.4″               122° 08′ 58.5″
 Gunsite Ridge                                                48° 03′ 22.4″               121° 51′ 41.5″
 Gold Mountain                                                47° 32′ 51.3″               122° 46′ 56.5″
 Buck Mountain                                                47° 47′ 05.3″               122° 59′ 34.6″
 Cougar Mountain                                              47° 32′ 39.4″               122° 06′ 34.4″
 Squak Mountain                                               47° 30′ 14.4″               122° 03′ 34.4″
 Tiger Mountain                                               47° 30′ 13.4″               121° 58′ 32.4″
 Devils Mountain                                              48° 21′ 52.4″               122° 16′ 06.6″
 McDonald Mountain                                            47° 20′ 11.3″               122° 51′ 30.5″
 Maynard Hill                                                 48° 00′ 58.3″               122° 55′ 35.6″
 North Mountain                                               47° 19′ 07.3″               123° 20′ 48.6″
 Green Mountain                                               47° 33′ 40.3″               122° 48′ 31.5″
 Capitol Peak                                                 46° 58′ 21.3″               123° 08′ 21.5″
 Rattlesnake Mountain                                         47° 28′ 09.4″               121° 49′ 17.4″
 Three Sisters Mountain                                       47° 07′ 19.4″               121° 53′ 34.4″
 Grass Mountain                                               47° 12′ 14.1″               121° 47′ 42.4″
 Spar Pole Hill                                               47° 02′ 51.4″               122° 08′ 39.4″

           (4) Upon an applicant's specific request to the Commission or a frequency coordinator, co-channel
               stations may be separated by less than 113 km (70 mi) by meeting certain transmitter ERP and
               antenna height criteria. The following table indicates separations assignable to such co-channel
               stations for various transmitter power and antenna height combinations. The minimum separation
               permitted is 88 km (55 mi). Applicants will provide the Commission with a statement that the
               application is submitted for consideration under the table, a list of all co-channel stations within 113
               km (70 mi), and the DHAATs and ERPs for these stations and the applicant's proposed station.
               Applicants seeking to be licensed for stations located at distances less than those prescribed in the
               table are required to secure a waiver and must submit with the application, in addition to the above,
               an interference analysis, based upon any of the generally-accepted terrain-based propagation
               models, that shows that co-channel stations would receive the same or greater interference
               protection than provided in the table. Requests for separations less than 88 km (55 mi) must also
               include an analysis of interference potential from mobile transmitters to existing co-channel base
               station receivers. Applicants seeking a waiver must submit with their application a certificate of
               service indicating that concurrent with the submission of the application to the Commission or a
47 CFR 90.621(b)(4) (enhanced display)                                                                     page 438 of 516
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                                                                                                      47 CFR 90.621(b)(4)(i)
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                coordinator, all co-channel licensees within the applicable area were served with a copy of the
                application and all attachments thereto. Licensees thus served may file an opposition to the
                application within 30 days from the date the application is filed with the Commission.

                 (i)   The directional height of the antenna above average terrain (DHAAT) is calculated from the
                       average of the antenna heights above average terrain from 3 to 16 km (2 to 10 mi) from the
                       proposed site along a radial extending in the direction of the existing station and the radials 15
                       degrees to either side of that radial.

                 (ii) Except for the sites listed in paragraphs (b)(1), (b)(2), and (b)(3) of this section, additional co-
                      channel distance separation must be afforded to an existing station from an applicant wishing
                      to locate a station less than 113 km (70 mi) from a co-channel station, where either the
                      applicant's or the existing station is located at sites with DHAATs of 458 m (1500 ft) and above.
                      The separation between short-spaced co-channel stations shall be determined as follows:

                       (A) Calculate the DHAAT in each direction between every existing co-channel station with 113
                           km (70 mi) and the proposed station.

                       (B) In the table, locate the approximate ERP and DHAAT values for the proposed and existing
                           stations.

                       (C) When DHAAT values are greater than 458 m (1500 ft), use the required separation for 305
                           m (1000 ft) and add 1.6 km (1 mi) for every 30.5 km (100 ft), or increment thereof, of
                           DHAAT above 458 m (1500 ft) to the distance indicated in the table. If both the proposed
                           existing stations have DHAATs of 458 m (1500 ft) or more, the additional distance is
                           separately determined for each station and the combined distance is added to the
                           distance obtained from the table. Protection to existing stations will be afforded only up to
                           113 km (70 mi).

47 CFR 90.621(b)(4)(ii)(C) (enhanced display)                                                              page 439 of 516
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                                                                                                47 CFR 90.621(b)(4)(ii)(C)
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                                                               Short-Spacing Separation Table

                                          Distance between stations (km)1 2
Proposed station ERP (watts)/DHAAT(m)3    Existing station DHAAT (meters)3
                                         305 215 150 108       75   54    37
1000/305                                 113 113 113 113 113 113 113
1000/215                                 113 113 113 113 113 113 110
1000/150                                 113 113 113 113 112 108 103
1000/108                                 113 113 113 110 107 103             98
1000/75                                  113 112 108 103 100         96      91
1000/54                                  113 109 105 100       97    93      88
1000/37                                  109 104 100      95   92    88      88
500/305                                  113 113 113 113 113 113 110
500/215                                  113 113 113 112 109 105 100
500/150                                  113 112 108 103 100         96      91
500/108                                  112 107 103      98   95    91      88
500/75                                   107 102     98   93   90    88      88
500/54                                   103    98   94   89   88    88      88
500/37                                    99    94   90   88   88    88      88
250/305                                  113 113 113 112 109 105 100
250/215                                  113 113 107 102       99    95      90
250/150                                  109 104 100      95   92    88      88
250/108                                  105 100     96   91   88    88      88
250/75                                    99    94   90   88   88    88      88
250/54                                    95    90   88   88   88    88      88
250/37                                    91    88   88   88   88    88      88
125/305                                  113 111 107 102       99    95      90
125/215                                  108 103     99   94   91    88      88
125/150                                  103    98   94   89   88    88      88
125/108                                   98    93   89   88   88    88      88
125/75                                    93    88   88   88   88    88      88
125/54                                    88    88   88   88   88    88      88
125/37                                    88    88   88   88   88    88      88
62/305                                   108 103     99   94   91    88      88
62/215                                   103    98   94   89   88    88      88
47 CFR 90.621(b)(4)(ii)(C) (enhanced display)                                                            page 440 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                                         47 CFR 90.621(b)(4)(ii)(C)
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                                            Distance between stations (km)1 2
Proposed station ERP   (watts)/DHAAT(m)3    Existing station DHAAT (meters)3
                                           305 215 150 108       75   54    37
62/150                                     97   92    88    88   88    88      88
62/108                                     92   88    88    88   88    88      88
62/75                                      88   88    88    88   88    88      88
62/54                                      88   88    88    88   88    88      88
62/37                                      88   88    88    88   88    88      88
1Separations for stations on Santiago Peak, Sierra Peak, Mount Lukens, and Mount Wilson (CA) and the locations in the State of Washington listed in
paragraph (b)(3) of this section are 56 km (35 mi) greater than those listed in the table above. In the event of conflict between this table and the table of
additional California high elevation sites shown in paragraph (b)(2) of this section, the latter will apply.

2Distances shown are derived from the R–6602 curves and are based upon a non-overlap of the 22 dBu (F50,10) interference contour of the proposed
station with the 40 dBu (F50,50) contour of the existing station(s). No consideration is given to the 40 dBu service contour of the proposed station and the
22 dBu contour of the existing station(s). The minimum separation of stations will be 88 km (55 mi).

3 All existing stations are assumed to operate with 1000 watts ERP. When the ERP and/or DHAAT of a proposed station or the DHAAT of an existing station
is not indicated in the table, the next higher value(s) must be used.

47 CFR 90.621(b)(4)(ii)(C) (enhanced display)                                                                                                     page 441 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.621(b)(5)
Private Land Mobile Radio Services

           (5) The separation between co-channel systems may be less than the separations defined above if an
               applicant submits with its application letters of concurrence indicating that the applicant and each
               co-channel licensee within the specified separation agree to accept any interference resulting from
               the reduced separation between their systems. Each letter from a co-channel licensee must certify
               that the system of the concurring licensee is constructed and fully operational. The applicant must
               also submit with its application a certificate of service indicating that all concurring co-channel
               licensees have been served with an actual copy of the application.

           (6) A station located closer than the distances provided in this section to a co-channel station that was
               authorized as short-spaced under paragraph (b)(4) of this section shall be permitted to modify its
               facilities as long as the station does not extend its 22 dBu contour beyond its maximum 22 dBu
               contour (i.e., the 22 dBu contour calculated using the station's maximum power and antenna height
               at its original location) in the direction of the short-spaced station.

           (7) Offset frequencies in the 811–821/856–866 MHz band for use only within U.S./Mexico border area,
               as designated in § 90.619(a), shall be considered co-channel with non-offset frequencies in this
               band as designated in § 90.613. New applications for frequencies in this band for stations adjacent
               to the U.S./Mexico border area must comply with the co-channel separation provisions of this
               section.

     (c) Conventional systems authorized on frequencies in the Public Safety (except for those systems that have
         participated in a formal regional planning process as described in § 90.16) and Business/Industrial/Land
         Transportation categories which have not met the loading levels necessary for channel exclusivity will not
         be afforded co-channel protection.

     (d) Geographic separation between fixed stations operating on adjacent channels in the 809–817/854–862
         MHz Mid-Band segment must be based on lack of contour overlap as detailed in paragraphs (d)(1)
         through (4), unless the co-channel distance separation criteria in paragraph (b) of this section are met.

           (1) Forward contour analysis. An applicant seeking to license a fixed station on a channel in the
               809–817 MHz/854–862 MHz band segment will only be granted if the applicant's proposed
               interference contour creates no overlap with the 40 dBu F(50,50) contour of an incumbent operating
               a fixed station on an upper- or lower-adjacent channel. The applicant's interference contour is
               determined using the dBu level listed in the appropriate table in paragraph (d)(3) of this section. For
               this analysis the applicant shall plot the interference contour of its proposed fixed station at its
               proposed ERP but assume that any adjacent-channel incumbent licensee is operating at the
               maximum permitted ERP for the licensed antenna height.

           (2) Reciprocal contour analysis. In addition to the contour analysis described in paragraph (d)(1) of this
               section, any applicant seeking to license a fixed station on a channel in the 809–817 MHz/854–862
               MHz band segment must also pass a reciprocal contour analysis. Under the reciprocal analysis, the
               interference contour, F(50,10) of an incumbent operating a fixed station on an upper- or lower-
               adjacent channel must create no contour overlap with the proposed 40 dBu F(50,50) contour of the
               applicant's fixed station. The incumbent's interference contour is determined using the dBu level
               listed in the appropriate table in paragraph (d)(3) of this section. For this analysis the applicant shall
               plot the coverage contour of its fixed station, F(50,50), at its proposed ERP and antenna height above
               average terrain but plot the interference contour, F(50,10), of any adjacent-channel incumbent
               licensee at its maximum permitted ERP for the licensed antenna height.

47 CFR 90.621(d)(2) (enhanced display)                                                                    page 442 of 516
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                                                                                                  47 CFR 90.621(d)(3)
Private Land Mobile Radio Services

           (3) Contour matrix. Interference contour levels for the contour analysis described in paragraphs (d)(1)
               and (2) of this section are determined using Table 4 or Table 5 to this paragraph (d)(3). Table 4 is
               used to determine the interference contour F(50,10) level of a fixed station operating on a 12.5
               kilohertz bandwidth channel while Table 5 is used to determine the interference contour F(50,10)
               level of a fixed station operating on a 25 kilohertz bandwidth channel. The dBu level of the
               interference contour is determined by cross-referencing the modulation type of the station operating
               on the 25 kilohertz bandwidth channel with the modulation type of the station operating on the 12.5
               kilohertz bandwidth channel.

47 CFR 90.621(d)(3) (enhanced display)                                                               page 443 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.621(d)(3)
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47 CFR 90.621(d)(3) (enhanced display)           page 444 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.621(d)(3)
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47 CFR 90.621(d)(3) (enhanced display)           page 445 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.621(d)(4)
Private Land Mobile Radio Services

           (4) Letters of concurrence. Applicants may submit applications which cause overlap under the forward
               contour analysis described in paragraph (d)(1) of this section provided the applicant includes a letter
               of concurrence from each incumbent that receives contour overlap. In the letter of concurrence, the
               incumbent operator must agree to accept any interference that occurs as a result of the contour
               overlap. Applicants may also submit applications which receive contour overlap under the reciprocal
               analysis described in paragraph (d)(2) of this section provided the applicant includes a letter of

47 CFR 90.621(d)(4) (enhanced display)                                                                 page 446 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.621(e)
Private Land Mobile Radio Services

                concurrence from each incumbent that causes contour overlap. In this case, the incumbent operator
                must state in its letter of concurrence that it does not object to the applicant receiving contour
                overlap from the incumbent's facility.

     (e) Frequencies in the 809–817/854–862 MHz bands listed as available for eligibles in the Public Safety and
         Business/Industrial/Land Transportation Categories are available for inter-category sharing under the
         following conditions:

           (1) Channels in the Public Safety and Business/Industrial/Land Transportation categories will be
               available to eligible applicants in those categories only if there are no frequencies in their own
               category and no public safety systems are authorized on those channels under consideration to be
               shared.

           (2) Notwithstanding paragraph (e)(5) of this section, licensees of channels in the Business/Industrial/
               Land Transportation category may request a modification of the license, see § 1.947 of this chapter,
               to authorize use of the channels for commercial operation. The licensee may also, at the same time
               or thereafter, seek authorization to transfer or assign the license, see § 1.948 of this chapter, to any
               person eligible for licensing in the General or SMR categories. Applications submitted pursuant to
               this paragraph must be filed in accordance with the rules governing other applications for
               commercial channels, and will be processed in accordance with those rules. Grant of requests
               submitted pursuant to this paragraph is subject to the following conditions:

                 (i)   A licensee that modifies its license to authorize commercial operations will not be authorized to
                       obtain additional 800 MHz Business/Industrial/Land Transportation category channels for sites
                       located within 113 km (70 mi.) of the station for which the license was modified, for a period of
                       one year from the date the license is modified. This provision applies to the licensee, its
                       controlling interests and their affiliates, as defined in § 1.2110 of this chapter.

                (ii) With respect to licenses the initial application for which was filed on or after November 9, 2000,
                     requests submitted pursuant to paragraph (e)(2) of this section may not be filed until five years
                     after the date of the initial license grant. In the case of a license that is modified on or after
                     November 9, 2000 to add 800 MHz Business/Industrial/Land Transportation frequencies or to
                     add or relocate base stations that expand the licensee's interference contour, requests
                     submitted pursuant to paragraph (e)(2) of this section for these frequencies or base stations
                     may not be filed until five years after such modification.

                (iii) Requests submitted pursuant to paragraph (e)(2) of this section must include a certification
                      that written notice of the modification application has been provided to all Public Safety
                      licensees, see § 90.20(a), with base stations within 113 km (70 mi.) of the site of the channel(s)
                      for which authorization for commercial use is sought that operate within 25 kHz of the center
                      of those channel(s). If, pursuant to paragraph (e)(2) of this section, modification and
                      assignment or transfer applications are filed at different times, the written notice required by
                      this paragraph must be provided each time.

                (iv) The applicant must certify that it will take reasonable precautions to avoid causing harmful
                     interference to Public Safety licensees, see § 90.20(a), and to take such action as may be
                     necessary to eliminate interference to such licensees caused by its operations. (When an
                     assignment or transfer application is filed pursuant to paragraph (e)(2) of this section, this
                     representation is required only of the assignee or transferee.) Licensees of stations suffering or
                     causing harmful interference are expected to cooperate and resolve this problem by mutually

47 CFR 90.621(e)(2)(iv) (enhanced display)                                                               page 447 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.621(e)(3)
Private Land Mobile Radio Services

                          satisfactory arrangements. If the licensees are unable to do so, the Commission may impose
                          restrictions including specifying the transmitter power, antenna height, or area or hours of
                          operation.

                (3) Licensees granted authorizations pursuant to paragraph (e)(2) of this section may at any time
                    request modification of the license to authorize use of the channels consistent with the rules
                    governing the category to which they are allocated, provided that the licensee meets the applicable
                    eligibility requirements.

                (4) [Reserved]

                (5) The frequency coordinator must certify that frequencies are not available in the applicant's own
                    category, and coordination is required from the applicable out-of-category coordinator.

                (6) The out-of-category licensee must operate by the rules applicable to the category to which the
                    frequency is allocated.

      (f) Licensees of channels in the Business/Industrial/Land Transportation Categories in the 896–901/
          935–940 MHz bands may request a modification of the license, see § 1.947 of this chapter, to authorize
          use of the channels for commercial operation. The licensee may also, at the same time, or thereafter, seek
          authorization to transfer or assign the license, see § 1.948 of this chapter, to any person eligible for
          licensing in the General or SMR categories. Applications submitted pursuant to this paragraph must be
          filed in accordance with the rules governing other applications for commercial channels, and will be
          processed in accordance with those rules.

      (g) Applications for Public Safety systems (both trunked and conventional) in the 806–809/851–854 MHz
          bands will be assigned and protected based on the criteria established in the appropriate regional plan.
          See § 90.16 and the Report and Order in General Docket 87–112.

      (h) [Reserved]

[47 FR 41032, Sept. 16, 1982]

Editorial Notes: 1. For FEDERAL REGISTER citations affecting § 90.621, see the List of CFR Sections Affected,
which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.
2. At 63 FR 68968, Dec. 14, 1998, § 90.621 was amended by adding a note before Table 1 and revising the first two
columns of Table 1. However, Table 1 of § 90.621 as it appears in the October 1, 1998 revision of title 47 parts
80–end is an illustration and cannot be edited for amendments. For the convenience of the user, the revised text is
set forth as follows:

§ 90.621 Selection and assignment of frequencies.

(b) * * *
            *         *       *        *        *
   Table 1—Co-Channel Separations Between Common Antenna Sites in the
    State of California North of 35° North Latitude and West of 118° West
                                   Longitude

47 CFR 90.621(h) (enhanced display)                                                                        page 448 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                    47 CFR 90.621(h)
Private Land Mobile Radio Services

[NOTE: Coordinates are referenced to North American Datum 1983 (NAD83)]

               North latitude                                West longitude   ***
 38°03′39.7″                                  122°36′20.9″                    ***
 37°55′43.7″                                  122°35′14.9″                    ***
 37°50′56.7″                                  122°29′59.9″                    ***
 37°52′53.7″                                  121°55′08.9″                    ***
 37°51′11.7″                                  122°12′33.9″                    ***
 37°52′57.7″                                  122°13′14.9″                    ***
 37°50′59.7″                                  122°11′33.9″                    ***
 37°43′32.8″                                  122°24′55.9″                    ***
 37°41′20.8″                                  122°26′11.9″                    ***
 37°24′38.8″                                  122°18′23.9″                    ***
 37°19′12.8″                                  122°08′36.9″                    ***
 37°10′36.8″                                  121°54′27.8″                    ***
 37°07′08.8″                                  121°50′01.8″                    ***
 37°06′39.8″                                  121°50′32.8″                    ***
 36°31′44.9″                                  121°36′27.8″                    ***
 37°29′14.8″                                  121°52′06.8″                    ***
 40°15′45.6″                                  122°05′41.0″                    ***
 39°51′49.6″                                  121°41′23.9″                    ***
 39°12′16.6″                                  121°49′05.9″                    ***
 39°08′00.6″                                  121°06′01.8″                    ***
 38°52′14.6″                                  121°07′42.8″                    ***
 38°24′19.7″                                  122°06′33.9″                    ***
 38°01′14.7″                                  120°35′09.7″                    ***
 37°30′30.8″                                  121°22′29.8″                    ***
 37°32′31.8″                                  120°03′48.6″                    ***
 37°04′09.8″                                  119°25′42.5″                    ***
 36°44′37.8″                                  119°17′02.4″                    ***
 36°18′09.8″                                  120°24′06.6″                    ***
 36°17′06.8″                                  118°50′22.3″                    ***
 35°38′28.8″                                  118°47′11.3″                    ***
 35°33′08.8″                                  118°49′23.3″                    ***
 35°17′16.9″                                  119°30′58.4″                    ***
 35°17′26.9″                                  119°45′51.5″                    ***
 35°16′50.9″                                  119°44′55.5″                    ***

        *         *        *          *       *

47 CFR 90.621(h) (enhanced display)                                                 page 449 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.623
Private Land Mobile Radio Services

§ 90.623 Limitations on the number of frequencies assignable for conventional systems.
     (a) The maximum number of frequency pairs that may be assigned to a licensee for operation in the
         conventional mode in a given area is five (5).

     (b) Where an applicant proposes to operate a conventional radio system to provide facilities for the use of a
         single person or entity eligible under subparts B or C of this part, the applicant may be assigned only the
         number of frequency pairs justified on the basis of the requirement of the proposed single user of the
         system.

     (c) No non-SMR licensee will be authorized an additional frequency pair for a conventional system within 64
         kilometers (40 miles) of an existing conventional system, except where:

           (1) The additional frequency pair will be used to provide radio facilities to a single entity and the
               additional frequency pair is justified on the basis of the requirements of the proposed single user; or,

           (2) The licensee's existing frequency pair(s) is loaded to prescribed levels.

     (d) No licensee will be authorized frequencies for a conventional system if that licensee is operating an
         unloaded trunked system or has an application pending for a trunked system to serve multiple
         subscribers within 64 km (40 miles) of the requested conventional system.

[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 44559, Sept. 29, 1983; 48 FR 51929, Nov. 15, 1983; 58 FR 44963, Aug. 25,
1993; 59 FR 59966, Nov. 21, 1994; 62 FR 18935, Apr. 17, 1997]

§ 90.625 Other criteria to be applied in assigning channels for use in conventional systems of
communication.
     (a) Where an applicant certifies on its application that a channel will be loaded to 70 mobile stations, that
         channel will be made available to that applicant for its exclusive use in the area in which it proposes to
         operate. If the showing made justifies the assignment of more than one channel to the applicant,
         additional frequencies will be authorized.

     (b) Where an applicant proposes to furnish service to eligibles under subparts B or C of this part on a
         commercial basis using a conventional system of communication, the applicant will be considered on the
         same basis as that of an applicant for private or shared communication facilities.

     (c) No person authorized to operate any radio facility under the provisions of this subpart shall have a right to
         protest proposals on grounds other than violation of or inconsistency with the provisions of this subpart.
         All grants are made subject to this condition and to the other conditions and standards set out in this
         subpart.

[47 FR 41032, Sept. 16, 1982, as amended at 62 FR 18935, Apr. 17, 1997; 63 FR 68969, Dec. 14, 1998]

§ 90.627 Limitation on the number of frequency pairs that may be assignable for trunked
systems and on the number of trunked systems.
     (a) The maximum number of frequency pairs that may be assigned at any one time for the operation of a
         trunked radio system is twenty, except as specified in § 90.621(a)(1)(iv).

     (b) No non-SMR licensee will be authorized an additional trunked system within 64 kilometers (40 miles) of
         an existing trunked system, except where:

47 CFR 90.627(b) (enhanced display)                                                                            page 450 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.627(b)(1)
Private Land Mobile Radio Services

           (1) The additional trunked system will be used to provide radio facilities for a single entity, where the
               additional system is justified on the basis of the requirements of the proposed single user; or,

           (2) The licensee's existing trunked system is loaded to at least 70 mobile and control stations per
               channel.

[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 44559, Sept. 29, 1983; 48 FR 51929, Nov. 15, 1983; 49 FR 36377, Sept. 17,
1984; 51 FR 37404, Oct. 22, 1986; 53 FR 12157, Apr. 13, 1988; 58 FR 44963, Aug. 25, 1993; 59 FR 59966, Nov. 21, 1994]

§ 90.629 Extended implementation period.
Applicants requesting frequencies for either trunked or conventional operations may be authorized a period of up to
five (5) years for constructing and placing a system in operation in accordance with the following:

     (a) The applicant must justify an extended implementation period. The justification must describe the
         proposed system, state the amount of time necessary to construct and place the system in operation,
         identify the number of base stations to be constructed and placed in operation during each year of the
         extended construction period, and show that:

           (1) The proposed system will require longer than twelve (12) months to construct and place in operation
               because of its purpose, size, or complexity; or

           (2) The proposed system is to be part of a coordinated or integrated wide-area system which will require
               more than twelve (12) months to plan, approve, fund, purchase, construct, and place in operation; or

           (3) The applicant is required by law to follow a multi-year cycle for planning, approval, funding, and
               purchasing the proposed system.

     (b) Where an applicant is required by law to follow a multi-year cycle for planning, approval, funding and
         purchasing a proposed system, the applicant must indicate whether funding approval has been obtained
         and if not, when such funding approval is expected.

     (c) Authorizations under this section are conditioned upon the licensee constructing and placing its system in
         operation within the authorized implementation period and in accordance with an approved
         implementation plan of up to five years. Licensees must notify the Commission annually, using FCC Form
         601, that they are in compliance with their yearly station construction commitments, but may request
         amendment to these commitments at the time they file their annual certification. If the Commission
         approves the requested amendments to a licensee's implementation commitments, the licensee's
         extended implementation authority will remain in effect. If, however, the Commission concludes, at this or
         any other time, that a licensee has failed to meet its commitments, the Commission will terminate
         authority for the extended implementation period. When the Commission terminates an extended
         implementation authority, the affected licensee will be given six months from the date of termination to
         complete system construction. At the end of any licensee's extended implementation period,
         authorizations for all stations not constructed and placed in operation will be cancelled. Trunked systems
         granted an extended implementation period must comply with the channel loading requirements of
         section 90.631(b). Conventional channels not loaded to 70 mobile units may be subject to shared use by
         the addition of other licensees.

     (d) [Reserved]

47 CFR 90.629(d) (enhanced display)                                                                             page 451 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.629(e)
Private Land Mobile Radio Services

     (e) As of March 18, 1996, Specialized Mobile Radio systems are not eligible for extended implementation
         periods under this section. Additionally, all 800 MHz SMR licensees that are operating under extended
         implementation authority as of March 18, 1996 must, by May 16, 1996, demonstrate that continuing to
         allow them to have an extended period of time to construct their facilities is warranted and furthers the
         public interest. If a licensee's extended implementation authority showing is approved by the Bureau, such
         licensee will be afforded an extended implementation of two years or the remainder of its current
         extended implementation period, whichever is shorter. Upon the termination of this period, the
         authorizations for those facilities that remain unconstructed will terminate automatically. If a licensee
         with a current extended implementation period fails to submit the showing mentioned above within the
         designated timeframe or submits an insufficient or incomplete showing, such licensee will have six
         months from the last day on which it could timely file such a showing or from the disapproval of its
         request to construct the remaining facilities covered under its implementation plan to construct any
         unconstructed facilities for which it is authorized. The authorizations for those facilities remaining
         unconstructed after this six-month period will terminate automatically.

     (f) Pursuant to § 90.155(b), the provisions of this section shall apply to local government entities applying for
         any frequency in the Public Safety Pool.

[58 FR 34379, June 25, 1993, as amended at 61 FR 6157, Feb. 16, 1996; 63 FR 68969, Dec. 14, 1998; 65 FR 60877, Oct. 13, 2000;
69 FR 67489, Nov. 22, 2004]

§ 90.631 Trunked systems loading, construction and authorization requirements.
     (a) Non-SMR trunked systems will be authorized on the basis of a loading criteria of one hundred (100)
         mobile stations per channel. For purposes of determining compliance with trunked system loading
         requirements under this subpart, the term “mobile station” includes vehicular and portable mobile units
         and control stations.

     (b) Each applicant for a non-SMR trunked system must certify that a minimum of seventy (70) mobiles for
         each channel authorized will be placed into operation within five (5) years of the initial license grant.

     (c) Except for SMR applicants and as provided in paragraph (d) of this section, an applicant seeking to
         expand a trunked system by requesting additional channels from the Commission, or through
         intercategory sharing, or through an assignment, must have a loading level of seventy (70) mobiles per
         channel on the existing system that is the subject of the expansion request.

     (d) In rural areas, a licensee of a trunked system may request to increase its system capacity by five more
         channels than it has constructed without meeting the loading requirements specified in paragraphs (b)
         and (c) of this section. A rural area is defined for purposes of this section as being beyond a 100-mile
         radius of the following designated centers of the following urban areas: New York, NY; Los Angeles, CA;
         Chicago, IL; Philadelphia, PA; San Francisco, CA; Detroit, MI; Boston, MA; Houston, TX; Washington, DC;
         Dallas-Fort Worth, TX; Miami, FL; Cleveland, OH; St. Louis, MO; Atlanta, GA; Pittsburgh, PA; Baltimore, MD;
         Minneapolis-St. Paul, MN; Seattle, WA; San Diego, CA; and Tampa-St.Petersburg, FL. The coordinates for
         the centers of these areas are those referenced in § 90.741, except that the coordinates (referenced to
         North American Datum 1983 (NAD83)) for Tampa-St. Petersburg are latitude 28°00′1.1″ N, longitude
         82°26′59.3″ W.

     (e) Except as provided in § 90.629, licensees of trunked facilities must complete construction within one year.

47 CFR 90.631(e) (enhanced display)                                                                            page 452 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.631(f)
Private Land Mobile Radio Services

     (f) If a station is not placed in permanent operation, in accordance with the technical parameters of the
         station authorization, within one year, except as provided in § 90.629, its license cancels automatically.
         For purposes of this section, a base station is not considered to be placed in operation unless at least two
         associated mobile stations, or one control station and one mobile station, are also placed in operation.

     (g) Wide area systems may be authorized to persons eligible for licensing under subparts B or C of this part
         upon an appropriate showing of need. Remote or satellite stations of wide area systems in the Public
         Safety, Special Emergency, Telephone Maintenance, and Power Radio Services may be authorized on a
         primary basis if such stations are the first to be authorized in their area of operation on the frequency or
         group of frequencies. Remote or satellite stations of wide area systems in all other services will be
         authorized only on a secondary, non-interference basis to cochannel licensees. To determine system
         loading, the total number of mobile units and control stations operating in the wide-area system shall be
         counted with respect to the total number of base station frequencies assigned to the system.

     (h) Regional, statewide, or ribbon configuration systems may be authorized to persons eligible for licensing
         under subparts B or C of this part upon an appropriate showing of need. In a ribbon, regional or statewide
         system, a mobile station will be counted for channel loading purposes only for the base station facility in
         the geographic area in which it primarily operates. If this cannot be determined, it will be counted
         fractionally over the number of base station facilities with which it communicates regularly.

[47 FR 41032, Sept. 16, 1982]

Editorial Note: For FEDERAL REGISTER citations affecting § 90.631, see the List of CFR Sections Affected, which
appears in the Finding Aids section of the printed volume and at www.govinfo.gov.

§ 90.633 Conventional systems loading requirements.
     (a) Non-SMR conventional systems of communication will be authorized on the basis of a minimum loading
         criteria of seventy (70) mobile stations for each channel authorized.

     (b) A channel will not be assigned to additional licensees when it is loaded to 70 mobile stations. Where a
         licensee does not load a channel to 70 mobiles the channel will be available for assignment to other
         licensees. All authorizations for conventional systems are issued subject to this potential channel sharing
         condition.

     (c) Except as provided in § 90.629 of this part, licensees of conventional systems must place their authorized
         stations in operation not later than one year after the date of grant of the system license.

     (d) If a station is not placed in operation within one year, except as provided in Section 90.629 of this part, the
         license cancels automatically. For purposes of this section, a base station is not considered to be in
         operation unless at least one associated mobile station is also in operation.

     (e) A non-SMR licensee may apply for additional frequency pairs if its authorized conventional channel(s) is
         loaded to seventy (70) mobiles. Applications may be considered for additional channels in areas where
         spectrum is still available and not applied for, even if the already authorized channel(s) is not loaded to 70
         mobile units, upon an appropriate demonstration of need.

     (f) Wide area systems may be authorized to persons eligible for licensing under subparts B or C of this part
         upon an appropriate showing of need. For loading purposes, if the total number of mobile stations
         justifies the total number of authorized based frequencies in a given area, the system will be construed to
         be loaded.

47 CFR 90.633(f) (enhanced display)                                                                       page 453 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                   47 CFR 90.633(g)
Private Land Mobile Radio Services

       (g) Regional, statewide, or ribbon configuration systems may be authorized to persons eligible for licensing
           under subparts B or C of this part upon an appropriate showing of need. In a ribbon, regional or statewide
           system, a mobile station will be counted for channel loading purposes only for the base station facility in
           the geographic area in which it primarily operates. If this cannot be determined, it will be counted
           fractionally over the number of base station facilities with which it communicates regularly.

[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 51929, Nov. 15, 1983; 56 FR 65860, Dec. 19, 1991; 59 FR 59966, Nov. 21,
1994; 62 FR 18935, Apr. 17, 1997; 64 FR 10397, Mar. 4, 1999]

     TECHNICAL REGULATIONS REGARDING THE USE OF FREQUENCIES IN THE 806–824 MHZ, 851–869 MHZ,
                              896–901 MHZ, AND 935–940 MHZ BANDS

§ 90.635 Limitations on power and antenna height.
       (a) The effective radiated power and antenna height for base stations may not exceed 1 kilowatt (30 dBw)
           and 304 m. (1,000 ft.) above average terrain (AAT), respectively, or the equivalent thereof as determined
           from the Table. These are maximum values, and applicants will be required to justify power levels and
           antenna heights requested.

       (b) The maximum output power of the transmitter for mobile stations is 100 watts (20 dBw).

  Table—Equivalent Power and Antenna Heights for Base Stations in the
851–869 MHz and 935–940 MHz Bands Which Have a Requirement for a 32
                    km (20 mi) Service Area Radius

           Antenna height (ATT) meters (feet)                  Effective radiated power (watts)1 2 4
 Above 1,372 (4,500)                                                                                         65
 Above 1,220 (4,000) to 1,372 (4,500)                                                                        70
 Above 1,067 (3,500) to 1,220 (4,000)                                                                        75
 Above 915 (3,000) to 1,067 (3,500)                                                                         100
 Above 763 (2,500) to 915 (3,000)                                                                           140
 Above 610 (2,000) to 763 (2,500)                                                                           200
 Above 458 (1,500) to 610 (2,000)                                                                           350
 Above 305 (1,000) to 458 (1,500)                                                                           600
                                                                                                       3
 Up to 305 (1,000)                                                                                         1,000

1   Power is given in terms of effective radiated power (ERP).

2 Applicants in the Los Angeles, CA, area who demonstrate a need to serve both the downtown and
fringe areas will be permitted to utilize an ERP of 1 kw at the following mountaintop sites: Santiago
Park, Sierra Peak, Mount Lukens, and Mount Wilson.

3Stations with antennas below 305 m (1,000 ft) (AAT) will be restricted to a maximum power of 1
kw (ERP).

47 CFR 90.635(b) (enhanced display)                                                                                 page 454 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.637
Private Land Mobile Radio Services

4Licensees in San Diego, CA, will be permitted to utilize an ERP of 500 watts at the following
mountaintop sites: Palomar, Otay, Woodson and Miguel.

[70 FR 61062, Oct. 20, 2005]

§ 90.637 Restrictions on operational fixed stations.
     (a) Except for control stations, operational fixed operations will not be authorized in the 806–824 MHz,
         851–869 MHz, 896–901 MHz, or 935–940 MHz bands. This does not preclude secondary fixed tone
         signaling and alarm operations authorized in § 90.235 or in paragraph (c) of this section.

     (b) Control stations associated with one or more mobile relay stations will be authorized only on the assigned
         frequency of the associated mobile station. Use of a mobile service frequency by a control station of a
         mobile relay system is subject to the condition that harmful interference shall not be caused to stations of
         licensees authorized to use the frequency for mobile service communications.

     (c) Trunked and conventional systems that have exclusive-use status in their respective geographic areas
         may conduct fixed ancillary signaling and data transmissions subject to the following requirements:

           (1) All operations must be on a secondary, non-interference basis to the primary mobile operation of any
               other licensee.

           (2) The output power at the remote site must not exceed 30 watts.

           (3) Any fixed transmitters will not count toward meeting the mobile loading requirements nor be
               considered in whole or in part as a justification for authorizing additional frequencies in the
               licensee's mobile system.

           (4) Automatic means must be provided to deactivate the remote transmitter in the event the carrier
               remains on for a period in excess of three minutes.

           (5) Operational fixed stations authorized pursuant to the provisions of paragraphs (c) and (d) of this
               section are exempt from the requirements of §§ 90.425 and 90.429.

     (d) Conventional systems that do not have exclusive-use status in their respective geographic areas may
         conduct fixed ancillary signaling and data transmissions only in accordance with all the provisions of §
         90.235.

[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 51929, Nov. 15, 1983; 49 FR 36377, Sept. 17, 1984; 51 FR 37405, Oct. 22,
1986; 52 FR 1332, Jan. 13, 1987; 53 FR 12157, Apr. 13, 1988; 57 FR 34693, Aug. 6, 1992]

§ 90.645 Permissible operations.
Conventional and trunked radio systems may be used:

     (a) Only for purposes expressly allowed under this part.

     (b) Only persons who are eligible for facilities, either under this subpart or in the radio service included under
         subparts B or C of this part.

     (c) Except for licensees classified as CMRS providers under part 20 of this chapter, only for the transmission
         of messages or signals permitted in the services is which the participants are eligible.

     (d) For digital or analog transmissions.
47 CFR 90.645(d) (enhanced display)                                                                             page 455 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.645(e)
Private Land Mobile Radio Services

     (e) An SMRS licensee or a licensee who has been authorized a channel(s) on an exclusive basis, may use the
         system for the transmission of any base/mobile message, page or signal permitted in the service in which
         the participants are eligible.

     (f) Where the channel(s) is assigned to an SMRS licensee or exclusively to a single licensee, or where all
         users of a system agree, more than a single emission may be utilized within the authorized bandwidth. In
         such cases, the frequency stability requirements of § 90.213 shall not apply, but out-of-band emission
         limits of § 90.209 shall be met.

     (g) Up to five (5) contiguous 809–816/854–861 band channels as listed in §§ 90.615, 90.617, and 90.619
         may be authorized after justification for systems requiring more than the normal single channel
         bandwidth. If necessary, licensees may trade channels amongst themselves in order to obtain contiguous
         frequencies. Notification of such proposed exchanges shall be made to the appropriate frequency
         coordinator(s) and to the Commission by filing an application for license modification.

     (h) Up to 10 contiguous 896–901/935–940 MHz band channels as listed in § 90.617 may be combined for
         systems requiring more than the normal single channel bandwidth. If necessary, licensees may trade
         channels amongst themselves in order to obtain contiguous frequencies. Notification of such proposed
         exchanges shall be made to the appropriate frequency coordinator(s) and to the Commission by filing an
         application for license modification.

     (i)   Paging operations may be utilized on multiple licensed facilities (community repeaters) only when all
           licensees of the facility agree to such use.

[47 FR 41032, Sept. 16, 1982, as amended at 48 FR 51929, Nov. 15, 1983; 51 FR 37405, Oct. 22, 1986; 59 FR 59966, Nov. 21, 1994;
62 FR 18935, Apr. 17, 1997; 63 FR 68970, Dec. 14, 1998; 69 FR 67849, Nov. 22, 2004]

§ 90.647 Station identification.
     (a) Conventional systems of communication shall be identified in accordance with existing regulations
         governing such matters.

     (b) Trunked systems of communication, except as noted in paragraph (c) of this section, shall be identified
         through the use of an automatic device which transmits the call sign of the base station facility at 30
         minute intervals. Such station identification shall be made on the lowest frequency in the base station
         trunk group assigned the licensee. Should this frequency be in use at the time station identification is
         required, such identification may be made at the termination of the communication in progress on this
         frequency. Identification may be made by voice or International Morse Code. When the call sign is
         transmitted in International Morse Code, it must be at a rate of between 15 to 20 words per minute and by
         means of tone modulation of the transmitter, the tone frequency being between 800 and 1000 hertz.

     (c) Stations operating in either the 806–824/851–869 MHz or 896–901/935–940 MHz bands that are
         licensed on an exclusive basis, and normally employ digital signals for the transmission of data, text,
         control codes, or digitized voice may also be identified by digital transmission of the call sign. A licensee
         that identifies its station in this manner must provide the Commission, upon its request, information
         sufficient to decode the digital transmission and ascertain the call sign transmitted.

     (d) Notwithstanding the requirements set forth in this paragraph, systems operated by geographic area CMRS
         licensees are subject only to the station identification requirements of § 90.425(e).

[47 FR 41032, Sept. 16, 1982, as amended at 58 FR 12177, Mar. 3, 1993; 65 FR 24420, Apr. 26, 2000]

47 CFR 90.647(d) (enhanced display)                                                                            page 456 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.651
Private Land Mobile Radio Services

§ 90.651 Supplemental reports required of licensees authorized under this subpart.
Licensees of conventional systems must notify the Commission in accordance with § 1.946 of this chapter of the
number of mobile units placed in operation within their construction period.

[63 FR 68970, Dec. 14, 1998]

Editorial Note: At 63 FR 10397, Mar. 4, 1999, § 90.651 was amended by revising paragraph (c), effective Apr. 5,
1999. However, § 90.651, as revised at 63 FR 68970, Dec. 14, 1998, effective Feb. 12, 1999, did not contain
paragraph (c), and the amendment could not be incorporated.

§ 90.655 Special licensing requirements for Specialized Mobile Radio systems.
End users of conventional or trunked Specialized Mobile Radio systems that have control stations that require FAA
clearance, as specified in §§ 17.7 through 17.17 of this chapter, or that may have a significant environmental effect,
as defined by § 1.1307, or that are located in a “quiet zone”, as defined by § 1.924 of this chapter must be
individually licensed for such control stations prior to construction or operation. All other end users' operations will
be within the scope of the base station licensee. All end users, however, continue to be responsible to comply with
47 CFR part 90 and other federal laws.

[57 FR 40850, Sept. 8, 1992, as amended at 63 FR 68970, Dec. 14, 1998]

§ 90.656 Responsibilities of base station licensees of Specialized Mobile Radio systems.
     (a) The licensees of base stations that provide Specialized Mobile Radio service on a commercial basis of the
         use of individuals, Federal government agencies, or persons eligible for licensing under either subparts B
         or C of this part will be responsible for exercising effective operational control over all mobile and control
         stations that communicate with the base station. The base station licensee will be responsible for
         assuring that its system is operated in compliance with all applicable rules and regulations.

     (b) Customers that operate mobile units on a particular Specialized Mobile Radio system will be licensed to
         that system. A customer that operates temporarily on more than one system will be deemed, when
         communicating with the other system, to be temporarily licensed to the other system and for that
         temporary period, the licensee of the other system will assume the same licensee responsibility for the
         customer's mobile station(s) as if the customer's stations were licensed to that other system.

[57 FR 40851, Sept. 8, 1992, as amended at 62 FR 18935, Apr. 17, 1997]

  POLICIES GOVERNING THE LICENSING AND USE OF MTA-BASED SMR SYSTEMS IN THE 896–901/935–940
                                           MHZ BAND

§ 90.661 MTA-based SMR service areas.
MTA licenses for SMR spectrum blocks in the 896–901/935–940 MHz band listed in table 4B of § 90.617(d) are
available in 51 Major Trading Areas (MTAs) as defined in § 90.7. Within these MTAs, licenses will be authorized in
ten channel blocks as specified in table 4B of § 90.617(d) through the competitive bidding procedures described in
subpart U of this part.

47 CFR 90.661 (enhanced display)                                                                          page 457 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.663
Private Land Mobile Radio Services

[60 FR 21991, May 4, 1995]

§ 90.663 MTA-based SMR system operations.
     (a) MTA-based licensees authorized in the 896–901/935–940 MHz band pursuant to § 90.661 may construct
         and operate base stations using any frequency identified in their spectrum block anywhere within their
         authorized MTA, provided that:

           (1) The MTA licensee affords protection, in accordance with § 90.621(b), to all sites for which
               applications were filed on or prior to August 9, 1994.

           (2) The MTA licensee complies with any rules and international agreements that restrict use of
               frequencies identified in their spectrum block, including the provisions of § 90.619 relating to
               U.S./Canadian and U.S./Mexican border areas.

           (3) The MTA licensee limits its field strength at any location on the border of the MTA service area in
               accordance with § 90.671 and masks its emissions in accordance with § 90.669.

     (b) In the event that the authorization for a previously authorized co-channel station within the MTA licensee's
         authorized spectrum block is terminated or revoked, the MTA licensee's co-channel obligations to such
         station will cease upon deletion of the facility from the Commission's licensing record. The MTA licensee
         then will be able to construct and operate base stations using such frequency.

[60 FR 21991, May 4, 1995]

§ 90.665 Authorization, construction and implementation of MTA licenses.
     (a) MTA licenses in the 896–901/935–940 MHz band will be issued for a term not to exceed ten years.

     (b) MTA licensees in the 896–901/935–940 MHz band will be permitted five years to construct their stations.
         This five-year period will commence with the issuance of the MTA-wide authorization and will apply to all
         of the licensee's stations within the MTA spectrum block, including any stations that may have been
         subject to an earlier construction deadline arising from a pre-existing authorization.

     (c) Each MTA licensee in the 896–901/935–940 MHz band must, three years from the date of license grant,
         construct and place into operation a sufficient number of base stations to provide coverage to at least
         one-third of the population of the MTA; further, each MTA licensee must provide coverage to at least two-
         thirds of the population of the MTA five years from the date of license grant. Alternatively, an MTA
         licensee must demonstrate, through a showing to the Commission five years from the date of license
         grant, that it is providing substantial service. An MTA licensee must, three years from license grant, either
         show that the 1⁄3 population coverage standard has been satisfied, or provide written notification that it
         has elected to show substantial service to the MTA five years from license grant. In addition, as part of
         the election to provide a substantial service showing, each MTA licensee must, three years from license
         grant, indicate how it expects to demonstrate substantial service at five years. The MTA licensee must
         meet the population coverage benchmarks regardless of the extent to which incumbent licensees are
         present within the MTA block.

     (d) MTA licensees who fail to meet the coverage requirements imposed at either the third or fifth years of
         their license term, or to make a convincing showing of substantial service, will forfeit the portion of the
         MTA license that exceeds licensed facilities constructed and operating on the date of the MTA license
         grant.

47 CFR 90.665(d) (enhanced display)                                                                      page 458 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                47 CFR 90.667
Private Land Mobile Radio Services

[60 FR 21991, May 4, 1995, as amended at 60 FR 48918, Sept. 21, 1995; 60 FR 61487, Nov. 30, 1995; 64 FR 39942, July 23, 1999]

§ 90.667 Grandfathering provisions for incumbent licensees.
     (a) These provisions apply to all 900 MHz SMR licensees who obtained licenses or filed applications for
         secondary sites on or before August 9, 1994 (“incumbent licensees”), as well as to all 900 MHz SMR
         licensees who obtained authorizations pursuant to § 90.173(k). An incumbent licensee's service area
         shall be defined by its originally-licensed 40 dBu field strength contour. Incumbent licensees are permitted
         to add new or modify transmit sites in this existing service area without prior notification to the
         Commission so long as their original 40 dBu field strength contour is not expanded.

     (b) Incumbent licensees operating at multiple sites may, after grant of MTA licenses has been completed,
         exchange multiple site licenses for a single license, authorizing operations throughout the contiguous and
         overlapping 40 dBu field strength contours of the multiple sites. Incumbents exercising this license
         exchange option must submit specific information for each of their external base sites after the close of
         the 900 MHz SMR auction.

     (c) Applications in the 900 MHz SMR service for secondary sites filed after August 9, 1994 shall be
         authorized on a secondary, non-interference basis to MTA licensee operations. No secondary sites shall
         be granted on this basis in an MTA once the MTA licensee has been selected.

[60 FR 48918, Sept. 21, 1995]

§ 90.669 Emission limits.
     (a) On any frequency in an MTA licensee's spectrum block that is adjacent to a non-MTA frequency, the power
         of any emission shall be attenuated below the transmitter power (P) by at least 43 plus 10 log10(P)
         decibels or 80 decibels, whichever is the lesser attenuation.

           Note: The measurements of emission power can be expressed in peak or average values, provided
           they are expressed in the same parameters as the transmitter power.

     (b) When an emission outside of the authorized bandwidth causes harmful interference, the Commission
         may, at its discretion, require greater attenuation than specified in this section.

[60 FR 21992, May 4, 1995]

§ 90.671 Field strength limits.
The predicted or measured field strength at any location on the border of the MTA service area for MTA licensees
shall not exceed 40 dBuV/m unless all bordering MTA licensees agree to a higher field strength. MTA licensees are
also required to coordinate their frequency usage with so-channel adjacent MTA licensees and all other affected
parties. To the extent that a single entity obtains licenses for adjacent MTAs on the same channel block, it will not
be required to coordinate its operations in this manner. In the event that this standard conflicts with the MTA
licensee's obligation to provide co-channel protection to incumbent licensees under § 90.621(b), the requirements
of § 90.621(b) shall prevail.

[60 FR 21992, May 4, 1995]

47 CFR 90.671 (enhanced display)                                                                               page 459 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.672
Private Land Mobile Radio Services

                             PROCEDURES AND PROCESS—UNACCEPTABLE INTERFERENCE

§ 90.672 Unacceptable interference to non-cellular 800 MHz licensees from 800 MHz cellular
systems or part 22 Cellular Radiotelephone systems, and within the 900 MHz narrowband
segments, and to narrowband 900 MHz licensees from 900 MHz broadband licensees.
     (a) Definition. Except as provided in 47 CFR 90.617(k), unacceptable interference to non-cellular licensees in
         the 800 MHz band from 800 MHz cellular systems or part 22 of this chapter, Cellular Radiotelephone
         systems; unacceptable interference within the 900 MHz narrowband segment; and unacceptable
         interference to narrowband 900 MHz licensees from 900 MHz broadband licensees, will be deemed to
         occur when the below conditions are met:

           (1) A transceiver at a site at which interference is encountered:

                 (i)   Is in good repair and operating condition, and is receiving:

                       (A) From the 800 MHz band, a median desired signal strength of −104 dBm or higher if
                           operating in the 800 MHz band, or a median desired signal strength of −88 dBm if
                           operating in the 900 MHz narrowband segment, as measured at the R.F. input of the
                           receiver of a mobile unit; or

                       (B) From the 800 MHz band, a median desired signal strength of −101 dBm or higher if
                           operating in the 800 MHz band, or a median desired signal strength of −85 dBm if
                           operating in the 900 MHz narrowband segment; or, as measured at the R.F. input of the
                           receiver of a portable i.e., hand-held unit;

                       (C) From the 900 MHz broadband segment, a median desired signal strength of −104 dBm or
                           higher if operating in the 900 MHz narrowband segment, as measured at the R.F. input of
                           the receiver of a mobile unit; or

                       (D) From the 900 MHz broadband segment, median desired signal strength of −101 dBm or
                           higher if operating in the 900 MHz narrowband segment, as measured at the R.F. input of
                           the receiver of a portable, i.e., hand-held unit; and either

                (ii) Is a voice transceiver:

                       (A) With manufacturer published performance specifications for the receiver section of the
                           transceiver equal to, or exceeding, the minimum standards set out in paragraph (b) of this
                           section, and;

                       (B) Receiving an undesired signal or signals which cause the measured Carrier to Noise plus
                           Interference (C/(I + N)) ratio of the receiver section of said transceiver to be less than 20
                           dB if operating in the 800 MHz band, or less than 17 dB if operating in the 900 MHz
                           narrowband segment, or;

                (iii) Is a non-voice transceiver receiving an undesired signal or signals which cause the measured
                      bit error rate (BER) (or some comparable specification) of the receiver section of said
                      transceiver to be more than the value reasonably designated by the manufacturer.

           (2) Provided, however, that if the receiver section of the mobile or portable voice transceiver does not
               conform to the standards set out in paragraph (b) of this section, then that transceiver shall be
               deemed subject to unacceptable interference only at sites where the median desired signal satisfies
               the applicable threshold measured signal power in paragraph (a)(1)(i) of this section after an upward

47 CFR 90.672(a)(2) (enhanced display)                                                                     page 460 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.672(b)
Private Land Mobile Radio Services

                adjustment to account for the difference in receiver section performance. The upward adjustment
                shall be equal to the increase in the desired signal required to restore the receiver section of the
                subject transceiver to the 20 dB C/(I + N) ratio of paragraph (a)(1)(ii)(B) of this section. The adjusted
                threshold levels shall then define the minimum measured signal power(s) in lieu of paragraph
                (a)(1)(i) of this section at which the licensee using such non-compliant transceiver is entitled to
                interference protection.

     (b) Minimum receiver requirements. Voice transceivers capable of operating in the 806–824 MHz portion of
         the 800 MHz band, or in the 900 MHz narrowband segment, shall have the following minimum
         performance specifications in order for the system in which such transceivers are used to claim
         entitlement to full protection against unacceptable interference. (See paragraph (a)(2) of this section.)

           (1) Voice units intended for mobile use: 75 dB intermodulation rejection ratio; 75 dB adjacent channel
               rejection ratio; −116 dBm reference sensitivity.

           (2) Voice units intended for portable use: 70 dB intermodulation rejection ratio; 70 dB adjacent channel
               rejection ratio; −116 dBm reference sensitivity.

           (3) Voice units intended for mobile or portable use in the 900 MHz narrowband segment: 60 dB
               intermodulation rejection ratio; 60 dB adjacent channel rejection ratio; −116 dBm reference
               sensitivity.

[85 FR 43141, July 15, 2020]

§ 90.673 Obligation to abate unacceptable interference.
     (a) Strict Responsibility. Any licensee who, knowingly or unknowingly, directly or indirectly, causes or
         contributes to causing unacceptable interference to a non-cellular licensee in the 800 MHz band, as
         defined in this chapter, shall be strictly accountable to abate the interference, with full cooperation and
         utmost diligence, in the shortest time practicable. Interfering licensees shall consider all feasible
         interference abatement measures, including, but not limited to, the remedies specified in the interference
         resolution procedures set forth in this chapter. This strict responsibility obligation applies to all forms of
         interference, including out-of-band emissions and intermodulation.

     (b) Joint and Several Responsibility. If two or more licensees knowingly or unknowingly, directly or indirectly,
         cause or contribute to causing unacceptable interference to a non-cellular licensee in the 800 MHz band,
         as defined in this chapter, such licensees shall be jointly and severally responsible for abating
         interference, with full cooperation and utmost diligence, in the shortest practicable time. This joint and
         several responsibility rule requires interfering licensees to consider all feasible interference abatement
         measures, including, but not limited to, the remedies specified in the interference resolution procedures
         set forth in this chapter. This joint and several responsibility rule applies to all forms of interference,
         including out-of-band emissions and intermodulation.

           (1) This joint and several responsibility rule requires interfering licensees to consider all feasible
               interference abatement measures, including, but not limited to, the remedies specified in the
               interference resolution procedures set forth in § 90.674(c). This joint and several responsibility rule
               applies to all forms of interference, including out-of-band emissions and intermodulation.

47 CFR 90.673(b)(1) (enhanced display)                                                                     page 461 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.673(b)(2)
Private Land Mobile Radio Services

           (2) Any licensee that can show that its signal does not directly or indirectly, cause or contribute to
               causing unacceptable interference to a non-cellular licensee in the 800 MHz band, as defined in this
               chapter, shall not be held responsible for resolving unacceptable interference. Notwithstanding, any
               licensee that receives an interference complaint from a public safety/CII licensee shall respond to
               such complaint consistent with the interference resolution procedures set forth in this chapter.

[69 FR 67849, Nov. 22, 2004]

§ 90.674 Interference resolution procedures.
     (a) Initial Notification. Any non-cellular licensee operating in the 806–824/851–869 MHz band who
         reasonably believes it is receiving unacceptable interference, as described in § 90.672, shall provide an
         initial notification of the interference incident. This initial notification of an interference incident shall be
         sent to all part 22 of this chapter Cellular Radiotelephone licensees and ESMR licensees who operate
         cellular base stations (“cell sites”) within 1,524 meters (5,000 feet) of the interference incident.

           (1) The initial notification of interference shall include the following information on interference:

                 (i)   The specific geographical location where the interference occurs, and the time or times at
                       which the interference occurred or is occurring;

                (ii) A description of its scope and severity, including its source, if known;

                (iii) The relevant Commission licensing information of the party suffering the interference; and

                (iv) A single point of contact for the party suffering the interference.

           (2) ESMR licensees, in conjunction with part 22 Cellular Radiotelephone licensees, shall establish an
               electronic means of receiving the initial notification described in paragraph (a)(1) of this section. The
               electronic system must be designed so that all appropriate 800 MHz ESMR and part 22 Cellular
               Radiotelephone licensees can be contacted about the interference incident with a single notification.
               The electronic system for receipt of initial notification of interference complaints must be operating
               no later than February 22, 2005.

           (3) ESMR licensees must respond to the initial notification described in paragraph (a)(1) of this section,
               as soon as possible and no later than 24 hours of receipt of notification from a public safety/CII
               licensee. This response time may be extended to 48 hours after receipt from other non-cellular
               licensees provided affected communications on these systems are not safety related.

     (b) Interference analysis. ESMR licensees—who receive an initial notification described in paragraph (a) of
         this section—shall perform a timely analysis of the interference to identify the possible source. Immediate
         on-site visits may be conducted when necessary to complete timely analysis. Interference analysis must
         be completed and corrective action initiated within 48 hours of the initial complaint from a public safety/
         CII licensee. This response time may be extended to 96 hours after the initial complaint from other non-
         cellular licensees provided affected communications on these systems are not safety related. Corrective
         action may be delayed if the affected licensee agrees in writing (which may be, but is not required to be,
         recorded via e-mail or other electronic means) to a longer period.

     (c) Mitigation Steps.

           (1) All 800 MHz cellular system licensees and part 22 of this chapter Cellular Radiotelephone licensees
               who are responsible for causing unacceptable interference shall take all affirmative measures to
               resolve such interference. 800 MHz cellular system licensees found to contribute to harmful

47 CFR 90.674(c)(1) (enhanced display)                                                                       page 462 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.674(c)(1)(i)
Private Land Mobile Radio Services

                interference, as defined in § 90.672, shall resolve such interference in the shortest time practicable.
                800 MHz cellular system licensees and part 22 of this chapter Cellular Radiotelephone licensees
                must provide all necessary test apparatus and technical personnel skilled in the operation of such
                equipment as may be necessary to determine the most appropriate means of timely eliminating the
                interference. However, the means whereby interference is abated or the cell parameters that may
                need to be adjusted is left to the discretion of involved 800 MHz cellular system licensees and/or
                part 22 of this chapter Cellular Radiotelephone licensees, whose affirmative measures may include,
                but not be limited to, the following techniques:

                 (i)   Increasing the desired power of the public safety signal;

                (ii) Decreasing the power of the ESMR and/or part 22 Cellular Radiotelephone signal;

                (iii) Modifying the ESMR and/or part 22 Cellular Radiotelephone systems antenna height;

                (iv) Modifying the ESMR and/or part 22 Cellular Radiotelephone system antenna characteristics;

                (v) Incorporating filters into ESMR and/or part 22 Cellular Radiotelephone system transmission
                    equipment;

                (vi) Permanently changing ESMR and/or part 22 Cellular Radiotelephone system frequencies; and

                (vii) Supplying interference-resistant receivers to the affected public safety licensee(s). If this
                      technique is used, in all circumstances, the ESMR and/or part 22 Cellular Radiotelephone
                      licensees shall be responsible for all costs thereof.

           (2) Whenever short-term interference abatement measures prove inadequate, the affected licensee
               shall, consistent with but not compromising safety, make all necessary concessions to accepting
               interference until a longer-term remedy can be implemented.

           (3) Discontinuing operations when clear and imminent danger exists. When a public safety licensee
               determines that a continuing presence of interference constitutes a clear and imminent danger to
               life or property, the licensee causing the interference must discontinue the associated operation
               immediately, until a remedy can be identified and applied. The determination that a continuing
               presence exists that constitutes a clear and imminent danger to life or property, must be made by
               written statement that:

                 (i)   Is in the form of a declaration, notarized affidavit, or statement under penalty or perjury, from an
                       officer or executive of the affected public safety licensee;

                (ii) Thoroughly describes the basis of the claim of clear and imminent danger;

                (iii) Was formulated on the basis of either personal knowledge or belief after due diligence;

                (iv) Is not proffered by a contractor or other third party; and

                (v) Has been approved by the Chief of the Public Safety and Homeland Security Bureau or other
                    designated Commission official. Prior to the authorized official making a determination that a
                    clear and imminent danger exists, the associated written statement must be served by hand-
                    delivery or receipted fax on the applicable offending licensee, with a copy transmitted by the
                    fastest available means to the Washington, DC office of the Commission's Public Safety and
                    Homeland Security Bureau.

[69 FR 67849, Nov. 22, 2004, as amended at 70 FR 76711, Dec. 28, 2005; 71 FR 69038, Nov. 29, 2006]

47 CFR 90.674(c)(3)(v) (enhanced display)                                                                   page 463 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.675
Private Land Mobile Radio Services

§ 90.675 Information exchange.
     (a) Prior coordination. Public safety/CII licensees may notify an ESMR or part 22 Cellular Radiotelephone
         licensee that they wish to receive prior notification of the activation or modification of ESMR or part 22
         Cellular Radiotelephone cell sites in their area. Thereafter, the ESMR or part 22 Cellular Radiotelephone
         licensee must provide the following information to the public safety/CII licensee at least 10 business days
         before a new cell site is activated or an existing cell site is modified:

           (1) Location;

           (2) Effective radiated power;

           (3) Antenna height;

           (4) Channels available for use.

     (b) Purpose of prior coordination. The coordination of cell sites is for informational purposes only: public
         safety/CII licensees are not afforded the right to accept or reject the activation of a proposed cell or to
         unilaterally require changes in its operating parameters. The principal purposes of notification are to:

           (1) Allow a public safety/CII licensee to advise the ESMR or part 22 Cellular Radiotelephone licensee
               whether it believes a proposed cell will generate unacceptable interference;

           (2) Permit ESMR or part 22 Cellular Radiotelephone licensees to make voluntary changes in cell
               parameters when a public safety licensee alerts them to possible interference; and

           (3) Rapidly identify the source if interference is encountered when the cell is activated.

     (c) Public safety information exchange.

           (1) Upon request by an ESMR or part 22 Cellular Radiotelephone licensee, public safety/CII licensees
               who operate radio systems in the 806–824/851–869 MHz shall provide the operating parameters of
               their radio system to the ESMR or part 22 Cellular Radiotelephone licensee.

           (2) Public safety licensees who perform the information exchange as described in this section must
               notify the appropriate ESMR and part 22 Cellular Radiotelephone licensees prior to any technical
               changes to their radio system.

§§ 90.676-90.677 [Reserved]

   POLICIES GOVERNING THE LICENSING AND USE OF EA-BASED SMR SYSTEMS IN THE 809–824/851–869
                                           MHZ BAND

§ 90.681 EA-based SMR service areas.
EA licenses in for channels 711 through 830 and Spectrum Blocks A through V listed in Tables 4 and 5 of § 90.617
are available in 175 Economic Areas (EAs) as defined in § 90.7.

[69 FR 67852, Nov. 22, 2004]

47 CFR 90.681 (enhanced display)                                                                         page 464 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.683
Private Land Mobile Radio Services

§ 90.683 EA-based SMR system operations.
     (a) EA-based licensees authorized in the 809–824/854–869 MHz band pursuant to § 90.681 of this part may
         construct and operate base stations using any of the base station frequencies identified in their spectrum
         block anywhere within their authorized EA, provided that:

           (1) The EA licensee affords protection, in accordance with § 90.621(b), to all previously authorized co-
               channel stations that are not associated with another EA license;

           (2) The EA licensee complies with any rules and international agreements that restrict use of
               frequencies identified in their spectrum block, including the provisions of § 90.619 relating to
               U.S./Canadian and U.S./Mexican border areas;

           (3) The EA licensee limits the field strength of its base stations at any location on the border of the EA
               service area in accordance with § 90.689;

           (4) Upon request by an incumbent licensee or the Commission, the EA licensees shall furnish the
               technical parameters, location and coordinates of the completion of the addition, removal, relocation
               or modification of any of its facilities within the EA. The EA licensee must provide such information
               within ten (10) days of receiving a written request.

           (5) For any construction or alteration that would exceed the requirements of § 17.7 of this chapter,
               licensees must notify the appropriate Regional Office of the Federal Aviation Administration (FAA
               Form 7460–1) and file a request for antenna height clearance and obstruction marking and lighting
               specifications (FCC Forn 854) with the FCC, WTB, Support Services Branch, Gettysburg, PA 17325.

           (6) Any additional transmitters placed in operation must not have a significant environmental effect as
               defined by §§ 1.1301 through 1.1319 of this chapter.

     (b) In the event that the authorization for a previously authorized co-channel station within the EA licensee's
         spectrum block is terminated or revoked, the EA licensee's co-channel obligations to such station will
         cease upon deletion of the facility from the Commission's official licensing records, and the EA licensee
         then will be able to construct and operate without regard to that previous authorization.

[61 FR 6158, 6159, Feb. 16, 1996, as amended at 62 FR 41216, July 31, 1997; 63 FR 68970, Dec. 14, 1998; 69 FR 67852, Nov. 22,
2004]

§ 90.685 Authorization, construction and implementation of EA licenses.
     (a) EA licenses in the 809–824/854–869 MHz band will be issued for a term not to exceed ten years.

     (b) EA licensees in the 809–824/854–869 MHz band must, within three years of the grant of their initial
         license, construct and place into operation a sufficient number of base stations to provide coverage to at
         least one-third of the population of its EA-based service area. Further, each EA licensee must provide
         coverage to at least two-thirds of the population of the EA-based service area within five years of the grant
         of their initial license. EA-based licensees may, in the alternative, provide substantial service to their
         markets within five years of the grant of their initial license. Substantial service shall be defined as:
         “Service which is sound, favorable, and substantially above a level of mediocre service.”

47 CFR 90.685(b) (enhanced display)                                                                            page 465 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                              47 CFR 90.685(c)
Private Land Mobile Radio Services

     (c) Channel use requirement. In addition to the population coverage requirements described in this section,
         we will require EA licensees in Channel blocks A, B and C in the 816–821/861–866 MHz band to
         construct 50 percent of the total channels included in their spectrum block in at least one location in their
         respective EA-based service area within three years of initial license grant and to retain such channel
         usage for the remainder of the construction period.

     (d) An EA licensee's failure to meet the population coverage requirements of paragraphs (b) and (c) of this
         section, will result in forfeiture of the entire EA license. Forfeiture of the EA license, however, would not
         result in the loss of any constructed facilities authorized to the licensee prior to the date of the
         commencement of the auction for the EA licenses.

     (e) EA licensees operating on channels listed in § 90.614(b) and (c) must implement an Enhanced
         Specialized Mobile Radio (ESMR) system—as defined in § 90.7—on their EA license and any associated
         site-based licenses prior to the expiration date of the EA license. EA licensees operating on these
         channels shall follow the construction notification procedures set forth in § 1.946(d) of this chapter.
         Failure to implement an ESMR system on their EA and site-based licenses before the expiration date of
         the EA license will result in termination of the EA license and any associated site-based licenses pursuant
         to § 1.946(c) of this chapter.

[62 FR 41216, July 31, 1997, as amended at 69 FR 67852, Nov. 22, 2004; 70 FR 6760, Feb. 8, 2005; 70 FR 76712, Dec. 28, 2005; 82
FR 41548, Sept. 1, 2017]

§ 90.687 Special provisions regarding assignments and transfers of authorizations for
incumbent SMR licensees in the 809–824/854–869 MHz band.
An SMR license initially authorized on any of the channels listed in Tables 4 and 5 of § 90.617 may transfer or
assign its channel(s) to another entity subject to the provisions of § 1.948 of this chapter and § 90.609(b). If the
proposed transferee or assignee is the EA licensee for the spectrum block to which the channel is allocated, such
transfer or assignment presumptively will be deemed to be in the public interest. However, such presumption will be
rebuttable.

[69 FR 67852, Nov. 22, 2004]

§ 90.689 Field strength limits.
     (a) For purposes of implementing §§ 90.689 through 90.699, predicted 36 and 40 dBµV/m contours shall be
         calculated using Figure 10 of § 73.699 of this chapter with a correction factor of −9 dB, and predicted 18
         and 22 dBµV/m contours shall be calculated using Figure 10a of § 73.699 of this chapter with a
         correction factor of −9 dB.

     (b) The predicted or measured field strength at any location on the border of the EA-based service area for EA
         licensees must not exceed 40 dBuV/m unless all bordering EA licensees agree to a higher field strength.
         In the event that this standard conflicts with the EA licensee's obligation to provide co-channel protection
         to incumbent licensees pursuant to § 90.621(b), the requirements of § 90.621(b) shall prevail.

[61 FR 6158, 6159, Feb. 16, 1996, as amended at 62 FR 41216, July 31, 1997]

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                                                                                                         47 CFR 90.691
Private Land Mobile Radio Services

§ 90.691 Emission mask requirements for EA-based systems.
     (a) Out-of-band emission requirement shall apply only to the “outer” channels included in an EA license and to
         spectrum adjacent to interior channels used by incumbent licensees. The emission limits are as follows:

           (1) For any frequency removed from the EA licensee's frequency block by up to and including 37.5 kHz,
               the power of any emission shall be attenuated below the transmitter power (P) in watts by at least
               116 Log10(f/6.1) decibels or 50 + 10 Log10(P) decibels or 80 decibels, whichever is the lesser
               attenuation, where f is the frequency removed from the center of the outer channel in the block in
               kilohertz and where f is greater than 12.5 kHz.

           (2) For any frequency removed from the EA licensee's frequency block greater than 37.5 kHz, the power
               of any emission shall be attenuated below the transmitter power (P) in watts by at least 43 +
               10Log10(P) decibels or 80 decibels, whichever is the lesser attenuation, where f is the frequency
               removed from the center of the outer channel in the block in kilohertz and where f is greater than
               37.5 kHz.

     (b) When an emission outside of the authorized bandwidth causes harmful interference, the Commission
         may, at its discretion, require greater attenuation than specified in this section.

§ 90.693 Grandfathering provisions for incumbent licensees.
     (a) General provisions. These provisions apply to “incumbent licensees,” all 800 MHz licensees authorized in
         the 809–821/854–866 MHz band who obtained licenses or filed applications on or before December 15,
         1995.

     (b) Spectrum blocks A through V. An incumbent licensee's service area shall be defined by its originally
         licensed 40 dBμV/m field strength contour and its interference contour shall be defined as its originally-
         licensed 22 dBμV/m field strength contour. The “originally-licensed” contour shall be calculated using the
         maximum ERP and the actual height of the antenna above average terrain (HAAT) along each radial.
         Incumbent licensees are permitted to add, remove or modify transmitter sites within their original 22
         dBμV/m field strength contour without prior notification to the Commission so long as their original 22
         dBμV/m field strength contour is not expanded. Incumbent licensee protection extends only to its 40
         dBμV/m signal strength contour. Pursuant to the minor modification notification procedures set forth in
         1.947(b), the incumbent licensee must notify the Commission within 30 days of any change in technical
         parameters for stations that are authorized under a waiver of 90.621(b)(4), or that are authorized under
         90.621(b)(5).

     (c) Special provisions for spectrum blocks F1 through V. Incumbent licensees that have received the consent
         of all affected parties or a certified frequency coordinator to utilize an 18 dBμV/m signal strength
         interference contour shall have their service area defined by their originally-licensed 36 dBμV/m field
         strength contour and their interference contour shall be defined as their originally-licensed 18 dBμV/m
         field strength contour. The “originally-licensed” contour shall be calculated using the maximum ERP and
         the actual HAAT along each radial. Incumbent licensees seeking to utilize an 18 dBμV/m signal strength
         interference contour shall first seek to obtain the consent of affected co-channel incumbents. When the
         consent of a co-channel licensee is withheld, an incumbent licensee may submit to any certified
         frequency coordinator an engineering study showing that interference will not occur, together with proof
         that the incumbent licensee has sought consent. Incumbent licensees are permitted to add, remove or
         modify transmitter sites within their original 18 dBμV/m field strength contour without prior notification to
         the Commission so long as their original 18 dBμV/m field strength contour is not expanded. Incumbent
         licensee protection extends only to its 36 dBμV/m signal strength contour. Pursuant to the minor

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                                                                                                              47 CFR 90.693(d)
Private Land Mobile Radio Services

           modification notification procedures set forth in 1.947(b), the incumbent licensee must notify the
           Commission within 30 days of any change in technical parameters for stations that are authorized under
           a waiver of 90.621(b)(4), or that are authorized under 90.621(b)(5).

     (d) Consolidated license —

           (1) Spectrum blocks A through V. Incumbent licensees operating at multiple sites may, after grant of EA
               licenses has been completed, exchange multiple site licenses for a single license, authorizing
               operations throughout the contiguous and overlapping 40 dBµV/m field strength contours of the
               multiple sites. Incumbents exercising this license exchange option must submit specific information
               on Form 601 for each of their external base sites after the close of the 800 MHz SMR auction. The
               incumbent's geographic license area is defined by the contiguous and overlapping 22 dBµV/m
               contours of its constructed and operational external base stations and interior sites that are
               constructed within the construction period applicable to the incumbent. Once the geographic license
               is issued, facilities that are added within an incumbent's existing footprint and that are not subject to
               prior approval by the Commission will not be subject to construction requirements.

           (2) Special Provisions for Spectrum Blocks F1 through V. Incumbent licensees that have received the
               consent of all affected parties or a certified frequency coordinator to utilize an 18 dBµV/m signal
               strength interference contour operating at multiple sites may, after grant of EA licenses has been
               completed, exchange multiple site licenses for a single license. This single site license will authorize
               operations throughout the contiguous and overlapping 36 dBµV/m field strength contours of the
               multiple sites. Incumbents exercising this license exchange option must submit specific information
               on Form 601 for each of their external base sites after the close of the 800 SMR auction. The
               incumbent's geographic license area is defined by the contiguous and overlapping 18 dBµV/m
               contours of its constructed and operational external base stations and interior sites that are
               constructed within the construction period applicable to the incumbent. Once the geographic license
               is issued, facilities that are added within an incumbent's existing footprint and that are not subject to
               prior approval by the Commission will not be subject to construction requirements.

[64 FR 71055, Dec. 20, 1999, as amended at 69 FR 67852, Nov. 22, 2004; 70 FR 6761, Feb. 8, 2005; 70 FR 61062, Oct. 20, 2005]

§ 90.699 Transition of the upper 200 channels in the 800 MHz band to EA licensing.
In order to facilitate provision of service throughout an EA, an EA licensee may relocate incumbent licensees in its
EA by providing “comparable facilities” on other frequencies in the 800 MHz band. Such relocation is subject to the
following provisions:

    (a)–(c) [Reserved]

     (d) Comparable facilities. The replacement system provided to an incumbent during an involuntary relocation
         must be at least equivalent to the existing 800 MHz system with respect to the following four factors:

           (1) System. System is defined functionally from the end user's point of view (i.e., a system is comprised
               of base station facilities that operate on an integrated basis to provide service to a common end
               user, and all mobile units associated with those base stations). A system may include multiple-
               licensed facilities that share a common switch or are otherwise operated as a unitary system,
               provided that the end user has the ability to access all such facilities. A system may cover more than
               one EA if its existing geographic coverage extends beyond the EA borders.

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                                                                                                      47 CFR 90.699(d)(2)
Private Land Mobile Radio Services

           (2) Capacity. To meet the comparable facilities requirement, an EA licensee must relocate the incumbent
               to facilities that provide equivalent channel capacity. We define channel capacity as the same
               number of channels with the same bandwidth that is currently available to the end user. For example,
               if an incumbent's system consists of five 50 kHz (two 25 kHz paired frequencies) channels, the
               replacement system must also have five 50 kHz channels. If a different channel configuration is
               used, it must have the same overall capacity as the original configuration. Comparable channel
               capacity requires equivalent signaling capability, baud rate, and access time. In addition, the
               geographic coverage of the channels must be coextensive with that of the original system.

           (3) Quality of service. Comparable facilities must provide the same quality of service as the facilities
               being replaced. Quality of service is defined to mean that the end user enjoys the same level of
               interference protection on the new system as on the old system. In addition, where voice service is
               provided, the voice quality on the new system must be equal to the current system. Finally, reliability
               of service is considered to be integral to defining quality of service. Reliability is the degree to which
               information is transferred accurately within the system. Reliability is a function of equipment failures
               (e.g., transmitters, feed lines, antennas, receivers, battery back-up power, etc.) and the availability of
               the frequency channel due to propagation characteristics (e.g., frequency, terrain, atmospheric
               conditions, radio-frequency noise, etc.) For digital data systems, this will be measured by the percent
               of time the bit error rate exceeds the desired value. For analog or digital voice transmissions, this will
               be measured by the percent of time that audio signal quality meets an established threshold. If
               analog voice system is replaced with a digital voice system the resulting frequency response,
               harmonic distortion, signal-to-noise ratio, and reliability will be considered.

           (4) Operating costs. Operating costs are those costs that affect the delivery of services to the end user.
               If the EA licensee provides facilities that entail higher operating cost than the incumbent's previous
               system, and the cost increase is a direct result of the relocation, the EA licensee must compensate
               the incumbent for the difference. Costs associated with the relocation process can fall into several
               categories. First, the incumbent must be compensated for any increased recurring costs associated
               with the replacement facilitates (e.g., additional rental payments, increased utility fees). Second,
               increased maintenance costs must be taken into consideration when determining whether operating
               costs are comparable. For example, maintenance costs associated with analog systems may be
               higher than the costs of digital equipment because manufacturers are producing mostly digital
               equipment and analog replacement parts can be difficult to find. An EA licensee's obligation to pay
               increased operating costs will end five years after relocation has occurred.

    (e)–(f) [Reserved]

[62 FR 41217, July 31, 1997, as amended at 77 FR 28798, May 16, 2012]

Subpart T—Regulations Governing Licensing and Use of Frequencies in the 220–222 MHz Band

Source: 56 FR 19603, Apr. 29, 1991, unless otherwise noted.

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                                                                                                          47 CFR 90.701
Private Land Mobile Radio Services

§ 90.701 Scope.
     (a) Frequencies in the 220–222 MHz band are available for land mobile and fixed use for both Government
         and non-Government operations. This subpart supplements part 1, subpart F of this chapter which
         establishes the requirements and conditions under which commercial and private radio stations may be
         licensed in the Wireless Telecommunications Services. The provisions of this subpart contain additional
         pertinent information for current and prospective licensees specific to the 220–222 MHz band.

     (b)

           (1) Licensees granted initial authorizations for operations in the 220–222 MHz band from among
               applications filed on or before May 24, 1991 are referred to in this subpart as “Phase I” licensees;

           (2) Applicants that filed initial applications for operations in the 220–222 MHz band on or before May
               24, 1991 are referred to in this subpart as “Phase I” applicants; and

           (3) All assignments, operations, stations, and systems of licensees granted authorizations from among
               applications filed for operations in the 220–222 MHz band on or before May 24, 1991 are referred to
               in this subpart as “Phase I” assignments, operations, stations, and systems, respectively.

     (c)

           (1) Licensees granted initial authorizations for operations in the 220–222 MHz band from among
               applications filed after May 24, 1991 are referred to in this subpart as “Phase II” licensees;

           (2) Applicants that filed initial applications for operations in the 220–222 MHz band after May 24, 1991
               are referred to in this subpart as “Phase II” applicants; and

           (3) All assignments, operations, stations, and systems of licensees granted authorizations from among
               applications filed for operations in the 220–222 MHz band after May 24, 1991 are referred to in this
               subpart as “Phase II” assignments, operations, stations, and systems, respectively.

     (d) The rules in this subpart apply to both Phase I and Phase II licensees, applicants, assignments,
         operations, stations, and systems, unless otherwise specified.

[62 FR 15993, Apr. 3, 1997, as amended at 63 FR 68971, Dec. 14, 1998]

§ 90.703 Eligibility.
The following persons are eligible for licensing in the 220–222 MHz band.

     (a) Any person eligible for licensing under subparts B or C of this part.

     (b) Any person proposing to provide communications service to any person eligible for licensing under
         subparts B or C of this part, on a not-for-profit, cost-shared basis.

     (c) Any person eligible under this part proposing to provide on a commercial basis, station and ancillary
         facilities for the use of individuals, federal government agencies and persons eligible for licensing under
         subparts B or C of this part.

[56 FR 19603, Apr. 29, 1991, as amended at 60 FR 15495, Mar. 24, 1995; 62 FR 18935, Apr. 17, 1997]

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                                                                                                                  47 CFR 90.705
Private Land Mobile Radio Services

§ 90.705 Forms to be used.
Phase II applications for EA, Regional, or Nationwide radio facilities under this subpart must be prepared in
accordance with §§ 1.2105 and 1.2107 of this chapter. Phase II applications for radio facilities operating on public
safety/mutual aid channels (Channels 161 through 170) or emergency medical channels (Channels 181 through
185) under this subpart must be prepared on FCC Form 601 and submitted or filed in accordance with § 1.913 of
this chapter.

[63 FR 68971, Dec. 14, 1998, as amended at 67 FR 45375, July 9, 2002]

§ 90.709 Special limitations on amendment of applications and on assignment or transfer of
authorizations licensed under this subpart.
     (a) Except as indicated in paragraph (b) of this section, the Commission will not consent to the following:

           (1) Any request to amend an application so as to substitute a new entity as the applicant;

           (2) Any application to assign or transfer a license for a Phase I, non-nationwide system prior to the
               completion of construction of facilities; or

           (3) Any application to transfer or assign a license for a Phase I nationwide system before the licensee
               has constructed at least 40 percent of the proposed system pursuant to the provisions of §
               90.725(a) or § 90.725(h), as applicable.

     (b) The Commission will grant the applications described in paragrpah (a) of this section if:

           (1) the request to amend an application or to transfer or assign a license does not involve a substantial
               change in the ownership or control or the applicant; or

           (2) The changes in the ownership or control of the applciant are involuntary due to the original
               applicant's insolvency, bankruptcy, incapacity, or death.

     (c) The assignee or transferee of a Phase I nationwide system is subject to the construction benchmarks and
         reporting requirements of § 90.725. The assignee or transferee of a Phase I nationwide system is not
         subject to the entry criteria described in § 90.713.

     (d) A licensee may partially assign any authorization in accordance with § 90.1019.

     (e) The assignee or transferee of a Phase II system is subject to the provisions of §§ 90.1017 and 1.2111(a)
         of this chapter.

[56 FR 19603, Apr. 29, 1991, as amended at 57 FR 32449, July 22, 1992; 62 FR 15993, Apr. 3, 1997; 63 FR 49295, Sept. 15, 1998]

§ 90.711 Processing of Phase II applications.
     (a) Phase II applications for authorizations on Channels 166 through 170 and Channels 181 through 185 will
         be processed on a first-come, first-served basis. When multiple applications are filed on the same day for
         these frequencies in the same geographic area, and insufficient frequencies are available to grant all
         applications (i.e., if all applications were granted, violation of the station separation provisions of §
         90.723(k) of this part would result), these applications will be considered mutually exclusive.

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                                                                                                        47 CFR 90.711(a)(1)
Private Land Mobile Radio Services

           (1) All applications will first be considered to determine whether they are substantially complete and
               acceptable for filing. If so, they will be assigned a file number and put in pending status. If not, they
               will be dismissed.

           (2) Except as otherwise provided in this section, all applications in pending status will be processed in
               the order in which they are received, determined by the date on which the application was received
               by the Commission in its Gettysburg, Pennsylvania office (or the address set forth at § 1.1102 of this
               chapter for applications requiring the fees established by part 1, subpart G of this chapter).

           (3) Each application that is accepted for filing will then be reviewed to determine whether it can be
               granted. Frequencies will be assigned by the Commission pursuant to the provisions of § 90.723.

           (4) An application which is dismissed will lose its place in the processing line.

     (b) All applications for Channels 161 through 165 that comply with the applicable rules of this part shall be
         granted. Licensees operating on such channels shall cooperate in the selection and use of frequencies
         and resolve any instances of interference in accordance with the provisions of § 90.173.

     (c) Phase II applications for authorization on all non-Government channels other than Channels 161 through
         170 and 181 through 185 shall be processed in accordance with the provisions of subpart W of this part.

[62 FR 15993, Apr. 3, 1997, as amended at 63 FR 32590, June 12, 1998; 63 FR 68971, Dec. 14, 1998]

§ 90.713 Entry criteria.
     (a) As set forth in § 90.717, four 5-channel blocks are available for nationwide, commercial use to non-
         Government, Phase I applicants. Applicants for these nationwide channel blocks must comply with
         paragraphs (b), (c), and (d) of this section.

     (b)

           (1) An applicant must include certification that, within ten years of receiving a license, it will construct a
               minimum of one base station in at least 70 different geographic areas designated in the application;
               that base stations will be located in a minimum of 28 of the 100 urban areas listed in § 90.741; and
               that each base station will have all five assigned nationwide channels constructed and placed in
               operation (regularly interacting with mobile and/or portable units).

           (2) An applicant must include certification that it will meet the construction requirements set forth in §
               90.725.

           (3) An applicant must include a ten-year schedule detailing plans for construction of the proposed
               system.

           (4) An applicant must include an itemized estimate of the cost of constructing 40 percent of the system
               and operating the system during the first four years of the license term.

           (5) An applicant must include proof that the applicant has sufficient financial resources to construct 40
               percent of the system and operate the proposed land mobile system for the first four years of the
               license term; i.e., that the applicant has net current assets sufficient to cover estimated costs or a
               firm financial commitment sufficient to cover estimated costs.

     (c) An applicant relying on personal or internal resources for the showing required in paragraph (b) of this
         section must submit independently audited financial statements certified within one year of the date of
         the application showing net current assets sufficient to meet estimated construction and operating costs.
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                                                                                                        47 CFR 90.713(d)
Private Land Mobile Radio Services

           An applicant must also submit an unaudited balance sheet, current within 60 days of the date of
           submission, that clearly shows the continued availability of sufficient net current assets to construct and
           operate the proposed system, and a certification by the applicant or an officer of the applicant
           organization attesting to the validity of the balance sheet.

     (d) An applicant submitting evidence of a firm financial commitment for the showing required in paragraph
         (b) of this section must obtain the commitment from a bona fide commercially acceptable source, e.g., a
         state or federally chartered bank or savings and loan institution, other recognized financial institution, the
         financial arm of a capital equipment supplier, or an investment banking house. If the lender is not a state
         or federally chartered bank or savings and loan institution, other recognized financial institution, the
         financial arm of a capital equipment supplier, or an investment banking house, the lender must also
         demonstrate that it has funds available to cover the total commitments it has made. The lender's
         commitment shall contain a statement that the lender:

           (1) Has examined the financial condition of the applicant including an audited financial statement, and
               has determined that the applicant is creditworthy;

           (2) Has examined the financial viability of the proposed system for which the applicant intends to use
               the commitment; and

           (3) Is willing, if the applicant is seeking a Phase I, commercial nationwide license, to provide a sum to
               the applicant sufficient to cover the realistic and prudent estimated costs of construction of 40
               percent of the system and operation of the system for the first four years of the license term.

     (e) A Phase II applicant for authorization in a geographic area for Channels 166 through 170 in the public
         safety/mutual aid category may not have any interest in another pending application in the same
         geographic area for Channels 166 through 170 in the public safety/mutual aid category, and a Phase II
         applicant for authorization in a geographic area for channels in the emergency medical category may not
         have any interest in another pending application in the same geographic area for channels in the
         emergency medical category.

[62 FR 15994, Apr. 3, 1997, as amended at 62 FR 18935, Apr. 17, 1997]

§ 90.715 Frequencies available.
     (a) The following table indicates the channel designations of frequencies available for assignment to eligible
         applicants under this subpart. Frequencies shall be assigned in pairs, with base station frequencies taken
         from the 220–221 MHz band with corresponding mobile and control station frequencies being 1 MHz
         higher and taken from the 221–222 MHz band. Only the lower half of the frequency pair(s) is listed in the
         table. Use of these frequencies in the Mexican and Canadian border areas is subject to coordination with
         those countries. See paragraph (c) of this section for special provisions concerning use in the Mexico
         border area.

                                 Table of 220–222 MHz Channel Designations

                        Channel No.                                     Base frequency (MHz)
           1                                                                                           220.0025
           2                                                                                               .0075
           3                                                                                               .0125

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                                                                      47 CFR 90.715(a)
Private Land Mobile Radio Services

                        Channel No.           Base frequency (MHz)
           4                                                            .0175
           5                                                            .0225
           6                                                            .0275
           7                                                            .0325
           8                                                            .0375
           9                                                            .0425
           10                                                           .0475
           11                                                           .0525
           12                                                           .0575
           13                                                           .0625
           14                                                           .0675
           15                                                           .0725
           16                                                           .0775
           17                                                           .0825
           18                                                           .0875
           19                                                           .0925
           20                                                           .0975
           21                                                        220.1025
           22                                                           .1075
           23                                                           .1125
           24                                                           .1175
           25                                                           .1225
           26                                                           .1275
           27                                                           .1325
           28                                                           .1375
           29                                                           .1425
           30                                                           .1475
           31                                                           .1525
           32                                                           .1575
           33                                                           .1625
           34                                                           .1675
           35                                                           .1725
           36                                                           .1775
           37                                                           .1825
           38                                                           .1875
           39                                                           .1925
           40                                                           .1975
           41                                                        220.2025
           42                                                           .2075
           43                                                           .2125

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                                                                      47 CFR 90.715(a)
Private Land Mobile Radio Services

                        Channel No.           Base frequency (MHz)
           44                                                           .2175
           45                                                           .2225
           46                                                           .2275
           47                                                           .2325
           48                                                           .2375
           49                                                           .2425
           50                                                           .2475
           51                                                           .2525
           52                                                           .2575
           53                                                           .2625
           54                                                           .2675
           55                                                           .2725
           56                                                           .2775
           57                                                           .2825
           58                                                           .2875
           59                                                           .2925
           60                                                           .2975
           61                                                        220.3025
           62                                                           .3075
           63                                                           .3125
           64                                                           .3175
           65                                                           .3225
           66                                                           .3275
           67                                                           .3325
           68                                                           .3375
           69                                                           .3425
           70                                                           .3475
           71                                                           .3525
           72                                                           .3575
           73                                                           .3625
           74                                                           .3675
           75                                                           .3725
           76                                                           .3775
           77                                                           .3825
           78                                                           .3875
           79                                                           .3925
           80                                                           .3975
           81                                                        220.4025
           82                                                           .4075
           83                                                           .4125

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                                                                      47 CFR 90.715(a)
Private Land Mobile Radio Services

                        Channel No.           Base frequency (MHz)
           84                                                           .4175
           85                                                           .4225
           86                                                           .4275
           87                                                           .4325
           88                                                           .4375
           89                                                           .4425
           90                                                           .4475
           91                                                           .4525
           92                                                           .4575
           93                                                           .4625
           94                                                           .4675
           95                                                           .4725
           96                                                           .4775
           97                                                           .4825
           98                                                           .4875
           99                                                           .4925
           100                                                          .4975
           101                                                       220.5025
           102                                                          .5075
           103                                                          .5125
           104                                                          .5175
           105                                                          .5225
           106                                                          .5275
           107                                                          .5325
           108                                                          .5375
           109                                                          .5425
           110                                                          .5475
           111                                                          .5525
           112                                                          .5575
           113                                                          .5625
           114                                                          .5675
           115                                                          .5725
           116                                                          .5775
           117                                                          .5825
           118                                                          .5875
           119                                                          .5925
           120                                                          .5975
           121                                                       220.6025
           122                                                          .6075
           123                                                          .6125

47 CFR 90.715(a) (enhanced display)                                   page 476 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.715(a)
Private Land Mobile Radio Services

                        Channel No.           Base frequency (MHz)
           124                                                          .6175
           125                                                          .6225
           126                                                          .6275
           127                                                          .6325
           128                                                          .6375
           129                                                          .6425
           130                                                          .6475
           131                                                          .6525
           132                                                          .6575
           133                                                          .6625
           134                                                          .6675
           135                                                          .6725
           136                                                          .6775
           137                                                          .6825
           138                                                          .6875
           139                                                          .6925
           140                                                          .6975
           141                                                       220.7025
           142                                                          .7075
           143                                                          .7125
           144                                                          .7175
           145                                                          .7225
           146                                                          .7275
           147                                                          .7325
           148                                                          .7375
           149                                                          .7425
           150                                                          .7475
           151                                                          .7525
           152                                                          .7575
           153                                                          .7625
           154                                                          .7675
           155                                                          .7725
           156                                                          .7775
           157                                                          .7825
           158                                                          .7875
           159                                                          .7925
           160                                                          .7975
           161                                                       220.8025
           162                                                          .8075
           163                                                          .8125

47 CFR 90.715(a) (enhanced display)                                   page 477 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                      47 CFR 90.715(a)
Private Land Mobile Radio Services

                        Channel No.           Base frequency (MHz)
           164                                                          .8175
           165                                                          .8225
           166                                                          .8275
           167                                                          .8325
           168                                                          .8375
           169                                                          .8425
           170                                                          .8475
           171                                                          .8525
           172                                                          .8575
           173                                                          .8625
           174                                                          .8675
           175                                                          .8725
           176                                                          .8775
           177                                                          .8825
           178                                                          .8875
           179                                                          .8925
           180                                                          .8975
           181                                                       220.9025
           182                                                          .9075
           183                                                          .9125
           184                                                          .9175
           185                                                          .9225
           186                                                          .9275
           187                                                          .9325
           188                                                          .9375
           189                                                          .9425
           190                                                          .9475
           191                                                          .9525
           192                                                          .9575
           193                                                          .9625
           194                                                          .9675
           195                                                          .9725
           196                                                          .9775
           197                                                          .9825
           198                                                          .9875
           199                                                          .9925
           200                                                       220.9975

47 CFR 90.715(a) (enhanced display)                                   page 478 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                    47 CFR 90.715(b)
Private Land Mobile Radio Services

     (b) The 200 channels are divided into three sub-bands as follows:

                Channel No.           Sub-band                           Frequencies (MHz)
            1–40                  A                 220.0025–220.1975/221.0025–221.1975
            41–160                C                 220.2025–220.7975/221.2025–221.7975
            161–200               B                 220.8025–220.9975/221.8025–221.9975

     (c) U.S./Mexico border area.

           (1) Channels 16–30, 45–60, 76–90, 106–120, 136–145, 156–165, 178–194 are available for primary use
               within the United States within 120 km (74.6 mi) of the Mexican border, subject to the power and
               antenna height conditions specified in § 90.729 and the use restrictions specified in §§
               90.717–90.721.

           (2) Channels 195–200 are available to both the United States and Mexico in the border area on an
               unprotected basis. Use is limited to a maximum effective radiated power (ERP) of 2 watts and a
               maximum antenna height of 6.1 meters (20 ft) above ground.

           (3) Channels allotted for primary Mexican use (1–15, 31–45, 61–75, 91–105, 121–135, 146–155, and
               166–177) may be used in the border area subject to the condition that the power flux density not
               exceed−86 dB(W/m2) at or beyond any point on the border. Stations operating under this provision
               will be considered secondary and will not be granted protection from harmful interference from
               stations that have primary use of the frequencies.

[56 FR 19603, Apr. 29, 1991, as amended at 57 FR 55148, Nov. 24, 1992]

§ 90.717 Channels available for nationwide systems in the 220–222 MHz band.
     (a) Channels 51–60, 81–90, and 141–150 are 10-channel blocks available to non-Government applicants only
         for nationwide Phase II systems.

     (b) Channels 21–25, 26–30, 151–155, and 156–160 are 5-channel blocks available to non-Government
         applicants only for nationwide, commercial Phase I systems.

     (c) Channels 111–115 and 116–120 are 5-channel blocks available for Government nationwide use only.

[62 FR 15994, Apr. 3, 1997]

§ 90.719 Individual channels available for assignment in the 220–222 MHz band.
     (a) Channels 171 through 200 are available to both Government and non-Government Phase I applicants, and
         may be assigned singly or in contiguous channel groups.

     (b) Channels 171 through 180 are available for any use by Phase I applicants consistent with this subpart.

     (c) Channels 181 through 185 are set aside in Phase II for emergency medical use for applicants that meet
         the eligibility criteria of § 90.20(a)(1)(iii) or § 90.20(a)(2)(xiii).

     (d) Channels 161 through 170 and 181 through 185 are the only 220–222 MHz channels available to Phase II
         non-nationwide, Government users.

47 CFR 90.719(d) (enhanced display)                                                                  page 479 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.720
Private Land Mobile Radio Services

[62 FR 15994, Apr. 3, 1997, as amended at 62 FR 18936, Apr. 17, 1997]

§ 90.720 Channels available for public safety/mutual aid.
     (a) Part 90 licensees who meet the eligibility criteria of §§ 90.20(a)(1), 90.20(a)(2)(i), 90.20(a)(2)(ii),
         90.20(a)(2)(iii), 90.20(a)(2)(iv), 90.20(a)(2)(vii), 90.20(a)(2)(ix), 90.20(a)(2)(xiii) or 90.20(a)(2)(xiv) are
         authorized by this rule to use mobile and/or portable units on Channels 161–170 throughout the United
         States, its territories, and the District of Columbia to transmit:

           (1) Communications relating to the immediate safety of life;

           (2) Communications to facilitate interoperability among entities eligible under §§ 90.20(a)(1),
               90.20(a)(2)(i), 90.20(a)(2)(ii), 90.20(a)(2)(iii), 90.20(a)(2)(iv), 90.20(a)(2)(vii), 90.20(a)(2)(ix),
               90.20(a)(2)(xiii) and 90.20(a)(2)(xiv); or

           (3) Communications on behalf of and by members of organizations established for disaster relief
               purposes having an emergency radio communications plan (i.e., licensees eligible under §
               90.20(a)(2)(vii)) for the transmission of communications relating to the safety of life or property, the
               establishment and maintenance of temporary relief facilities, and the alleviation of emergency
               conditions during periods of actual or impending emergency, or disaster, until substantially normal
               conditions are restored; for limited training exercises incidental to an emergency radio
               communications plan, and for necessary operational communications of the disaster relief
               organization or its chapter affiliates.

     (b) Any Government entity and any non-Government entity eligible to obtain a license under §§ 90.20(a)(1),
         90.20(a)(2)(i), 90.20(a)(2)(ii), 90.20(a)(2)(iii), 90.20(a)(2)(iv), 90.20(a)(2)(vii), 90.20(a)(2)(ix),
         90.20(a)(2)(xiii) or 90.20(a)(2)(xiv) is also eligible to obtain a license for base/mobile operations on
         Channels 161 through 170. Base/mobile or base/portable communications on these channels that do not
         relate to the immediate safety of life or to communications interoperability among the above-specified
         entities, may only be conducted on a secondary non-interference basis to such communications.

[62 FR 18936, Apr. 17, 1997, as amended at 81 FR 66544, Sept. 28, 2016]

§ 90.721 Other channels available for non-nationwide systems in the 220–222 MHz band.
     (a) The channel groups listed in the following Table are available to both Government and non-Government
         Phase I applicants for trunked operations or operations of equivalent or greater efficiency for non-
         commercial or commercial operations.

                                    Table 1—Phase I Trunked Channel Groups

                        Group No.                                            Channel Nos.
           1                                                                                        1–31–61–91–121
           2                                                                                        2–32–62–92–122
           3                                                                                        3–33–63–93–123
           4                                                                                        4–34–64–94–124
           5                                                                                        5–35–65–95–125
           6                                                                                        6–36–66–96–126
           7                                                                                        7–37–67–97–127

47 CFR 90.721(a) (enhanced display)                                                                            page 480 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.721(b)
Private Land Mobile Radio Services

                          Group No.                                       Channel Nos.
            8                                                                                    8–38–68–98–128
            9                                                                                    9–39–69–99–129
            10                                                                                10–40–70–100–130
            11                                                                                11–41–71–101–131
            12                                                                                12–42–72–102–132
            13                                                                                13–43–73–103–133
            14                                                                                14–44–74–104–134
            15                                                                                15–45–75–105–135
            16                                                                                16–46–76–106–136
            17                                                                                17–47–77–107–137
            18                                                                                18–48–78–108–138
            19                                                                                19–49–79–109–139
            20                                                                                20–50–80–110–140

      (b) The channels listed in the following Table are available to non-Government applicants for Phase II
          assignments in Economic Areas (EAs) and Regional Economic Area Groupings (REAGs) (see §§ 90.761
          and 90.763).

                 Table 2—Phase II EA and Regional Channel Assignments

     Assignment           Assignment area           Group Nos. (from table 1)            Channel Nos.
 A                   EA                       2 and 13
 B                   EA                       3 and 16
 C                   EA                       5 and 18
 D                   EA                       8 and 19
 E                   EA                                                                        171–180
 F                   REAG                     1, 6, and 11
 G                   REAG                     4, 9, and 14
 H                   REAG                     7, 12, and 17
 I                   REAG                     10, 15, and 20
 J                   REAG                                                                      186–200

[62 FR 15995, Apr. 3, 1997]

§ 90.723 Selection and assignment of frequencies.
      (a) Phase II applications for frequencies in the 220–222 MHz band shall specify whether their intended use is
          for 10-channel nationwide systems, 10-channel EA systems, 15-channel Regional systems, public safety/
          mutual aid use, or emergency medical use. Phase II applicants for frequencies for public safety/mutual
          aid use or emergency medical use shall specify the number of frequencies requested. All frequencies in
          this band will be assigned by the Commission.

      (b) Phase II channels will be assigned pursuant to §§ 90.717, 90.719, 90.720, 90.721, 90.761 and 90.763.

47 CFR 90.723(b) (enhanced display)                                                                       page 481 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.723(c)
Private Land Mobile Radio Services

     (c) Phase II applicants for public safety/mutual aid and emergency medical channels will be assigned only
         the number of channels justified to meet their requirements.

     (d) Phase I base or fixed station receivers utilizing 221–222 MHz frequencies assigned from Sub-band A as
         designated in § 90.715(b) will be geographically separated from those Phase I base or fixed station
         transmitters utilizing 220–221 MHz frequencies removed 200 kHz or less and assigned from Sub-band B
         as follows:

               Geographic Separation of Sub-Band A; Base or Fixed Station Receivers and
                      Sub-Band B; Base or Fixed Station Transmitters Effective

                          Separation distance (kilometers)                     Radiated power (watts)1
           0.0–0.3                                                                                            ( 2)
           0.3–0.5                                                                                             5
           0.5–0.6                                                                                            10
           0.6–0.8                                                                                            20
           0.8–2.0                                                                                            25
           2.0–4.0                                                                                            50
           4.0–5.0                                                                                           100
           5.0–6.0                                                                                           200
           Over 6.0                                                                                          500

           1   Transmitter peak envelope power shall be used to determine effective radiated power.

           2Stations separated by 0.3 km or less shall not be authorized. This table does not apply to the low-
           power channels 196–200. See § 90.729(c).

     (e) Phase II licensees authorized on 220–221 MHz frequencies assigned from Sub-band B will be required to
         geographically separate their base station or fixed station transmitters from the base station or fixed
         station receivers of Phase I licensees authorized on 221–222 MHz frequencies 200 kHz removed or less
         in Sub-band A in accordance with the Table in paragraph (d) of this section. Such Phase II licensees will
         not be required to geographically separate their base station or fixed station transmitters from receivers
         associated with additional transmitter sites that are added by such Phase I licensees in accordance with
         the provisions of § 90.745(a).

     (f) Phase II licensees with base or fixed stations transmitting on 220–221 MHz frequencies assigned from
         Sub-band B and Phase II licensees with base or fixed stations receiving on Sub-band A 221–222 MHz
         frequencies, if such transmitting and receiving frequencies are 200 kHz or less removed from one another,
         will be required to coordinate the location of their base stations or fixed stations to avoid interference and
         to cooperate to resolve any instances of interference in accordance with the provisions of § 90.173(b).

     (g) Phase I licensees with base or fixed stations transmitting on 220–221 MHz frequencies assigned from
         Sub-band B and Phase I licensees with base or fixed stations receiving on Sub-band A 221–222 MHz
         frequencies (if such transmitting and receiving frequencies are 200 kHz or less removed from one
         another) that add, remove, or modify station sites in accordance with the provisions of § 90.745(a) will be
         required to coordinate such actions with one another to avoid interference and to cooperate to resolve
         any instances of interference in accordance with the provisions of § 90.173(b).
47 CFR 90.723(g) (enhanced display)                                                                      page 482 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.723(h)
Private Land Mobile Radio Services

     (h) Phase I licensees with base or fixed stations transmitting on 220–221 MHz frequencies assigned from
         Sub-band B that add, remove, or modify station sites in accordance with the provisions of § 90.745(a) will
         be required to coordinate such actions with Phase II licensees with base or fixed stations receiving on
         Sub-band A 221–222 MHz frequencies 200 kHz or less removed.

     (i)   A mobile station is authorized to transmit on any frequency assigned to its associated base station.
           Mobile units not associated with base stations (see § 90.720(a)) must operate on “mobile” channels.

     (j)   A licensee's fixed station is authorized to transmit on any of the licensee's assigned base station
           frequencies or mobile station frequencies.

     (k) Except for nationwide assignments, the separation of co-channel Phase I base stations, or fixed stations
         transmitting on base station frequencies, shall be 120 kilometers. Except for Phase I licensees seeking
         license modification in accordance with the provisions of §§ 90.751 and 90.753, shorter separations
         between such stations will be considered by the Commission on a case-by-case basis upon submission
         of a technical analysis indicating that at least 10 dB protection will be provided to an existing Phase I
         station's predicted 38 dBu signal level contour. The existing Phase I station's predicted 38 dBu signal level
         contour shall be calculated using the F(50,50) field strength chart for Channels 7–13 in § 73.699 (Fig. 10)
         of this chapter, with a 9 dB correction factor for antenna height differential. The 10 dB protection to the
         existing Phase I station's predicted 38 dBu signal level contour shall be calculated using the F(50,10) field
         strength chart for Channels 7–13 in § 73.699 (Fig. 10a) of this chapter, with a 9 dB correction factor for
         antenna height differential.

[62 FR 15995, Apr. 3, 1997, as amended at 62 FR 18936, Apr. 17, 1997; 63 FR 32590, June 12, 1998]

§ 90.725 Construction requirements for Phase I licensees.
     (a) Licensees granted commercial nationwide authorizations will be required to construct base stations and
         placed those base stations in operation as follows:

           (1) In at least 10 percent of the geographic areas designated in the application within two years of initial
               license grant, including base stations in at least seven urban areas listed in § 90.741 of this part;

           (2) In at least 40 percent of the geographic areas designated in the application within four years of initial
               license grant, including base stations in at least 28 urban areas listed in § 90.741 of this part;

           (3) In at least 70 percent of the geographic areas designated in the application within six years of initial
               license grant, including base stations in at least 28 urban areas listed in § 90.741 of this part;

           (4) In all geographic areas designated in the application within ten years of initial license grant, including
               base stations in at least 28 urban areas listed in § 90.741 of this part.

     (b) Licensees not meeting the two and four year criteria shall lose the entire authorization, but will be
         permitted a six month period to convert the system to non-nationwide channels, if such channels are
         available.

     (c) Licensees not meeting the six and ten year criteria shall lose the authorizations for the facilities not
         constructed, but will retain exclusivity for constructed facilities.

     (d) Each commercial nationwide licensee must file a system progress report on or before the anniversary
         date of the grant of its license after 2, 4, 6 and 10 years, demonstrating compliance with the relevant
         construction benchmark criteria.

47 CFR 90.725(d) (enhanced display)                                                                       page 483 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                             47 CFR 90.725(d)(1)
Private Land Mobile Radio Services

           (1) An overall status report of the system, that must include, but need not be limited to:

                 (i)   A list of all sites at which base stations have been constructed, with antenna heights and
                       effective radiated power specified for each site;

                 (ii) A list of all other known base station sites at which construction has not been completed; and

                (iii) A construction and operational schedule for the next five-year period, including any known
                      changes to the plan for construction and operation submitted with the licensee's original
                      application for the system.

           (2) An analysis of the system's compliance with the requirements of paragraph (a) of this section, with
               documentation to support representations of completed construction, including, but not limited to:

                 (i)   Equipment purchase orders and contracts;

                 (ii) Lease or purchase contracts relating to antenna site arrangements;

                (iii) Equipment and antenna identification (serial) numbers; and

                (iv) Service agreements and visits.

     (e) Beginning with its second license term, each nationwide licensee must file a progress report once every
         five years on the anniversary date of the grant of the first renewal of its authorization, including the
         information required by paragraph (d)(1) of this section.

     (f) Licensees authorized Phase I non-nationwide systems, or authorized on Channels 161 through 170 or
         Channels 181 through 185, must construct their systems (i.e., have all specified base stations
         constructed with all channels) and place their systems in operation, or commence service in accordance
         with the provisions of § 90.167, within twelve months of the initial license grant date. Authorizations for
         systems not constructed and placed in operation, or having commenced service, within twelve months
         from the date of initial license grant cancel automatically.

     (g) A licensee that loses authorization for some or all of its channels due to failure to meet construction
         deadlines or benchmarks may not reapply for nationwide channels in the same category or for non-
         nationwide channels in the same category in the same geographic area for one year from the date the
         Commission takes final action affirming that those channels have been cancelled.

     (h) The requirements and conditions of paragraphs (a) through (e) and paragraph (g) of this section apply to
         nationwide licensees that construct and operate stations for fixed or paging operations on a primary basis
         instead of, or in addition to, stations for land mobile operations on a primary basis except that, in
         satisfying the base station construction and placed in operation requirements of paragraph (a) of this
         section and the system progress report requirements of paragraphs (d) and (e) of this section, licensees
         operating stations for fixed operation on a primary basis instead of, or in addition to, stations for land
         mobile or paging operations on a primary basis in a given geographic area may demonstrate how such
         fixed stations are providing substantial service to the public in those geographic areas.

[56 FR 19603, Apr. 29, 1991, as amended at 56 FR 32517, July 17, 1991; 57 FR 32450, July 22, 1992; 58 FR 36363, July 7, 1993; 62
FR 15996, Apr. 3, 1997; 63 FR 49295, Sept. 15, 1998]

§ 90.727 Extended implementation schedules for Phase I licensees.
Except for nationwide and commercial systems, a period of up to three (3) years may be authorized for constructing
and placing a system in operation if:

47 CFR 90.727 (enhanced display)                                                                                page 484 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                          47 CFR 90.727(a)
Private Land Mobile Radio Services

     (a) The applicant submits justification for an extended implementation period. The justification must include
         reasons for requiring an extended construction period, the proposed construction schedule (with
         milestones), and must show either that:

           (1) The proposed system will serve a large fleet of mobile units and will involve a multi-year cycle for its
               planning, approval, funding, purchase, and construction; or

           (2) The proposed system will require longer than 8 months to place in operation because of its purpose,
               size, or complexity; or

           (3) The proposed system is to be part of a coordinated or integrated area-wide system which will require
               more than 8 months to construct; or

           (4) The applicant is a local governmental agency and demonstrates that the government involved is
               required by law to follow a multi-year cycle for planning, approval, funding, and purchasing the
               proposed system.

     (b) Authorizations under this section are conditioned upon the licensee's compliance with the submitted
         extended implementation schedule. Failure to meet the schedule will result in loss of authorizations for
         facilities not constructed.

[56 FR 19603, Apr. 29, 1991, as amended at 56 FR 32517, July 17, 1991]

§ 90.729 Limitations on power and antenna height.
     (a) The permissible effective radiated power (ERP) with respect to antenna heights for land mobile, paging, or
         fixed stations transmitting on frequencies in the 220–221 MHz band shall be determined from the
         following Table. These are maximum values and applicants are required to justify power levels requested.

                                              ERP vs. Antenna Height Table2

                   Antenna height above average terrain (HAAT), meters         Effective radiated power, watts1
           Up to 150                                                                                          500
           150 to 225                                                                                         250
           225 to 300                                                                                         125
           300 to 450                                                                                             60
           450 to 600                                                                                             30
           600 to 750                                                                                             20
           750 to 900                                                                                             15
           900 to 1050                                                                                            10
           Above 1050                                                                                              5

           1   Transmitter PEP shall be used to determine ERP.

           2   These power levels apply to stations used for land mobile, paging, and fixed operations.

47 CFR 90.729(a) (enhanced display)                                                                        page 485 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                         47 CFR 90.729(b)
Private Land Mobile Radio Services

     (b) The maximum permissible ERP for mobile units is 50 watts. Portable units are considered as mobile units.
         Licensees operating fixed stations or paging base stations transmitting on frequencies in the 221–222
         MHz band may not operate such fixed stations or paging base stations at power levels greater than 50
         watts ERP, and may not transmit from antennas that are higher than 7 meters above average terrain,
         except that transmissions from antennas that are higher than 7 meters above average terrain will be
         permitted if the effective radiated power of such transmissions is reduced below 50 watts ERP by 20
         log10(h/7) dB, where h is the height above average terrain (HAAT), in meters.

     (c) Base station and fixed station transmissions on base station transmit Channels 196–200 are limited to 2
         watts ERP and a maximum antenna HAAT of 6.1 meters (20 ft). Licensees authorized on these channels
         may operate at power levels above 2 watts ERP or with a maximum antenna HAAT greater than 6.1
         meters (20 ft) if:

           (1) They obtain the concurrence of all Phase I and Phase II licensees with base stations or fixed stations
               receiving on base station receive Channels 1–40 and located within 6 km of their base station or
               fixed station; and

           (2) Their base station or fixed station is not located in the United States/Mexico or United States/
               Canada border areas.

[62 FR 15996, Apr. 3, 1997, as amended at 63 FR 32590, June 12, 1998]

§ 90.733 Permissible operations.
     (a) Systems authorized in the 220–222 MHz band may be used:

           (1)

                 (i)   For government and non-government land mobile operations, i.e., for base/mobile and mobile
                       relay transmissions, on a primary basis; or

                 (ii) For the following operations instead of or in addition to a licensee's land mobile operations:
                      One-way or two-way paging operations on a primary basis by all non-Government Phase II
                      licensees, fixed operations on a primary basis by all non-Government Phase II licensees and all
                      Government licensees, one-way or two-way paging or fixed operations on a primary basis by all
                      non-Government Phase I licensees, except that before a non-Government Phase I licensee may
                      operate one-way or two-way paging or fixed systems on a primary basis instead of or in
                      addition to its land mobile operations, it must meet the following requirements:

                       (A) A nationwide Phase I licensee must;

                            (1) Meet its two-year benchmark for the construction of its land mobile system base
                                stations as prescribed in § 90.725(a); and

                            (2) Provide a new 10-year schedule, as required in § 90.713(b)(3), for the construction of
                                the fixed and/or paging system it intends to construct instead of, or in addition to, its
                                nationwide land mobile system; and

                            (3) Certify that the financial showings and all other certifications provided in
                                demonstrating its ability to construct and operate its nationwide land mobile system,
                                as required in §§ 90.713 (b), (c) and (d), remain applicable to the nationwide system
                                it intends to construct consisting of fixed and/or paging operations on a primary
                                basis instead of, or in addition to, its land mobile operations; or

47 CFR 90.733(a)(1)(ii)(A)(3) (enhanced display)                                                           page 486 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                               47 CFR 90.733(a)(1)(ii)(A)(4)
Private Land Mobile Radio Services

                            (4) In lieu of providing the requirements of paragraph (a)(1)(ii)(A)(3) of this section,
                                provide the financial showings and all other certifications required in §§ 90.713 (b),
                                (c) and (d) to demonstrate its ability to construct and operate a nationwide system
                                consisting of fixed and/or paging operations on a primary basis instead of, or in
                                addition to, its land mobile operations.

                      (B) A non-nationwide Phase I licensee must first meet the requirement to construct its land
                          mobile base station and place it in operation, or commence service (in accordance with §
                          90.167) as prescribed in § 90.725(f) or § 90.727, as applicable.

           (2) Only by persons who are eligible for facilities under either this subpart or in the pools included in
               subpart B or C of this part.

           (3) Except for licensees classified as CMRS providers under part 20 of this chapter, only for the
               transmission of messages or signals permitted in the services in which the participants are eligible.

     (b) See § 90.720 of this part for permissible operations on mutual aid channels.

     (c) For operations requiring less than a 4 kHz bandwidth, more than a single emission may be utilized within
         the authorized bandwidth. In such cases, the frequency stability requirements of § 90.213 do not apply,
         but the out-of-band emission limits of § 90.210(f) must be met.

     (d) Licensees, except for licensees authorized on Channels 161 through 170 and 181 through 185, may
         combine any number of their authorized, contiguous channels (including channels derived from multiple
         authorizations) to form channels wider than 5 kHz.

     (e) In combining authorized, contiguous channels (including channels derived from multiple authorizations)
         to form channels wider than 5 kHz, the emission limits in § 90.210(f) must be met only at the outermost
         edges of the contiguous channels. Transmitters shall be tested to confirm compliance with this
         requirement with the transmission located as close to the band edges as permitted by the design of the
         transmitter. The frequency stability requirements in § 90.213 shall apply only to the outermost of the
         contiguous channels authorized to the licensee. However, the frequency stability employed for
         transmissions operating inside the outermost contiguous channels must be such that the emission limits
         in § 90.210(f) are met over the temperature and voltage variations prescribed in § 2.995 of this chapter.

     (f) A Phase I non-nationwide licensee operating a paging base station, or a fixed station transmitting on
         frequencies in the 220–221 MHz band, may only operate such stations at the coordinates of the
         licensee's authorized land mobile base station.

     (g) The transmissions of a Phase I non-nationwide licensee's paging base station, or fixed station
         transmitting on frequencies in the 220–221 MHz band, must meet the requirements of §§ 90.723(d), (g),
         (h), and (k), and 90.729, and such a station must operate at the effective radiated power and antenna
         height-above-average-terrain prescribed in the licensee's land mobile base station authorization.

     (h) Licensees using 220–222 MHz spectrum for geophysical telemetry operations are authorized to operate
         fixed stations on a secondary, non-interference basis to licensees operating in the 220–222 MHz band on
         a primary basis under the conditions that such licensees:

           (1) Provide notification of their operations to co-channel non-nationwide Phase I licensees with an
               authorized base station, or fixed station transmitting on frequencies in the 220–221 MHz band,
               located within 45 km of the secondary licensee's station, to co-channel, Phase II EA or Regional
               licensee authorized to operate in the EA or REAG in which the secondary licensee's station is located,
               and to co-channel Phase I or Phase II nationwide licensees;

47 CFR 90.733(h)(1) (enhanced display)                                                                     page 487 of 516
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                                                                                                            47 CFR 90.733(h)(2)
Private Land Mobile Radio Services

           (2) Operate only at temporary locations in accordance with the provisions of § 1.931 of this chapter;

           (3) Not transmit at a power level greater than one watt ERP;

           (4) Not transmit from an antenna higher than 2 meters (6.6 feet) above ground; and

           (5) Not operate on Channels 111 through 120, 161 through 170, or 181 through 185.

     (i)   All licensees constructing and operating base stations or fixed stations on frequencies in the 220–222
           MHz band must:

           (1) Comply with any rules and international agreements that restrict use of their authorized frequencies,
               including the provisions of § 90.715 relating to U.S./Mexican border areas;

           (2) Comply with the provisions of § 17.6 of this chapter with regard to antenna structures; and

           (3) Comply with the provisions of §§ 1.1301 through 1.1319 of this chapter with regard to actions that
               may or will have a significant impact on the quality of the human environment.

[56 FR 19603, Apr. 29, 1991, as amended at 56 FR 32517, July 17, 1991; 57 FR 32450, July 22, 1992; 59 FR 59967, Nov. 21, 1994;
62 FR 15997, Apr. 3, 1996; 62 FR 18936, Apr. 17, 1997; 63 FR 32591, June 12, 1998; 63 FR 68971, Dec. 14, 1998]

§ 90.735 Station identification.
     (a) Except for nationwide systems authorized in the 220–222 MHz band, station identification is required
         pursuant to § 90.425 of this part.

     (b) Trunked systems shall employ an automatic device to transmit the call sign of the base station at 30
         minute intervals. The identification shall be made on the lowest frequency in the base station trunked
         group assigned to the licensee. If this frequency is in use at the time identification is required, the
         identification may be made at the termination of the communication in progress on this frequency.

     (c) Station identification may be by voice or International Morse Code. If the call sign is transmitted in
         International Morse Code, it must be at a rate of between 15 to 20 words per minute, and by means of
         tone modulation of the transmitter, with the tone frequency being between 800 and 1000 hertz.

     (d) Digital transmissions may also be identified by digital transmission of the station call sign. A licensee that
         identifies its station in this manner must provide the Commission, upon its request, information (such as
         digital codes and algorithms) sufficient to decipher the data transmission to ascertain the call sign
         transmitted.

[56 FR 19603, Apr. 29, 1991, as amended at 62 FR 15997, Apr. 3, 1997]

§ 90.739 Number of systems authorized in a geographical area.
There is no limit on the number of licenses that may be authorized to a single licensee.

[62 FR 46214, Sept. 2, 1997]

47 CFR 90.739 (enhanced display)                                                                                page 488 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.741
Private Land Mobile Radio Services

§ 90.741 Urban areas for Phase I nationwide systems.
Licensees of Phase I nationwide systems must construct base stations, or fixed stations transmitting on
frequencies in the 220–221 MHz band, in a minimum of 28 of the urban areas listed in the following Table within ten
years of initial license grant. A base station, or fixed station, is considered to be within one of the listed urban areas
if it is within 60 kilometers (37.3 miles) of the specified coordinates (coordinates are referenced to North American
Datum 1983 (NAD83)).

                                                Table

                               Urban area                        North latitude       West longitude
 New York, New York-Northeastern New Jersey                   40°45′06.4″          73°59′37.5″
 Los Angeles-Long Beach, California                           34°03′15.0″          118°14′31.3″
 Chicago, Illinois-Northwestern Indiana                       41°52′28.1″          87°38′22.2″
 Philadelphia, Pennsylvania/New Jersey                        39°56′58.4″          75°09′19.6″
 Detroit, Michigan                                            42°19′48.1″          83°02′56.7″
 Boston, Massachusetts                                        42°21′24.4″          71°03′23.2″
 San Francisco-Oakland, California                            37°46′38.7″          122°24′43.9″
 Washington, DC/Maryland/Virginia                             38°53′51.4″          77°00′31.9″
 Dallas-Fort Worth, Texas                                     32°47′09.5″          96°47′38.0″
 Houston, Texas                                               29°45′26.8″          95°21′37.8″
 St Louis, Missouri/Illinois                                  38°37′45.2″          90°12′22.4″
 Miami, Florida                                               25°46′38.4″          80°11′31.2″
 Pittsburgh, Pennsylvania                                     40°26′19.2″          79°59′59.2″
 Baltimore, Maryland                                          39°17′26.4″          76°36′43.9″
 Minneapolis-St Paul, Minnesota                               44°58′56.9″          93°15′43.8″
 Cleveland, Ohio                                              41°29′51.2″          81°41′49.5″
 Atlanta, Georgia                                             33°45′10.4″          84°23′36.7″
 San Diego, California                                        32°42′53.2″          117°09′24.1″
 Denver, Colorado                                             39°44′58.0″          104°59′23.9″
 Seattle-Everett, Washington                                  47°36′31.4″          122°20′16.5″
 Milwaukee, Wisconsin                                         43°02′19.0″          87°54′15.3″
 Tampa, Florida                                               27°56′59.1″          82°27′24.3″
 Cincinnati, Ohio/Kentucky                                    39°06′07.2″          84°30′34.8″
 Kansas City, Missouri/Kansas                                 39°04′56.0″          94°35′20.8″
 Buffalo, New York                                            42°52′52.2″          78°52′20.1″
 Phoenix, Arizona                                             33°27′12.2″          112°04′30.5″
 San Jose, California                                         37°20′15.8″          121°53′27.8″
 Indianapolis, Indiana                                        39°46′07.2″          86°09′46.0″
 New Orleans, Louisiana                                       29°56′53.7″          90°04′10.3″
 Portland, Oregon/Washington                                  45°31′05.4″          122°40′39.3″
 Columbus, Ohio                                               39°57′47.2″          83°00′16.7″

47 CFR 90.741 (enhanced display)                                                                           page 489 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                     47 CFR 90.741
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                              Urban area        North latitude     West longitude
 Hartford, Connecticut                        41°46′12.4″        72°40′47.3″
 San Antonio, Texas                           29°25′37.8″        98°29′07.1″
 Rochester, New York                          43°09′41.2″        77°36′20.0″
 Sacramento, California                       38°34′56.7″        121°29′44.8″
 Memphis, Tennessee/Arkansas/Mississippi      35°08′46.3″        90°03′13.3″
 Louisville, Kentucky/Indiana                 38°14′47.3″        85°45′48.9″
 Providence-Pawtucket-Warwick, RI/MA          41°49′32.4″        71°24′39.2″
 Salt Lake City, Utah                         40°45′22.8″        111°53′28.8″
 Dayton, Ohio                                 39°45′32.2″        84°11′42.8″
 Birmingham, Alabama                          33°31′01.4″        86°48′36.0″
 Bridgeport, Connecticut                      41°10′49.3″        73°11′20.4″
 Norfolk-Portsmouth, Virginia                 36°51′10.5″        76°17′19.8″
 Albany-Schenectady-Troy, New York            42°39′01.3″        73°44′59.4″
 Oklahoma City, Oklahoma                      35°28′26.2″        97°31′05.1″
 Nashville-Davidson, Tennessee                36°09′33.2″        86°46′55.0″
 Toledo, Ohio/Michigan                        41°39′14.2″        83°32′38.8″
 New Haven, Connecticut                       41°18′25.3″        72°55′28.4″
 Honolulu, Hawaii                             21°18′48.6″        157°51′50.1″
 Jacksonville, Florida                        30°19′44.9″        81°39′41.3″
 Akron, Ohio                                  41°05′00.2″        81°30′43.4″
 Syracuse, New York                           43°03′04.2″        76°09′12.7″
 Worcester, Massachusetts                     42°15′37.3″        71°48′15.3″
 Tulsa, Oklahoma                              36°09′12.3″        95°59′35.0″
 Allentown-Bethlehem-Easton, PA/NJ            40°36′11.4″        75°28′04.7″
 Richmond, Virginia                           37°32′15.5″        77°26′07.9″
 Orlando, Florida                             28°32′43.0″        81°22′37.3″
 Charlotte, North Carolina                    35°13′44.5″        80°50′44.3″
 Springfield-Chicopee-Holyoke, MA/CT          42°06′21.3″        72°35′30.3″
 Grand Rapids, Michigan                       42°58′03.1″        85°40′13.1″
 Omaha, Nebraska/Iowa                         41°15′42.0″        95°56′15.1″
 Youngstown-Warren, Ohio                      41°05′57.2″        80°39′01.3″
 Greenville, South Carolina                   34°50′50.4″        82°24′00.4″
 Flint, Michigan                              43°00′50.1″        83°41′32.8″
 Wilmington, Delaware/New Jersey/Maryland     39°44′46.4″        75°32′49.7″
 Raleigh-Durham/North Carolina                35°46′38.5″        78°38′20.0″
 West Palm Beach, Florida                     26°42′37.2″        80°03′06.1″
 Oxnard-Simi Valley-Ventura, California       34°12′00.0″        119°11′03.4″
 Fresno, California                           36°44′11.8″        119°47′14.5″
 Austin, Texas                                30°16′09.8″        97°44′38.0″
 Tucson, Arizona                              32°13′15.3″        110°58′10.3″

47 CFR 90.741 (enhanced display)                                                    page 490 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                      47 CFR 90.741
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                            Urban area                          North latitude     West longitude
 Lansing, Michigan                                           42°44′01.1″         84°33′14.9″
 Knoxville, Tennessee                                        35°57′39.3″         83°55′06.7″
 Baton Rouge, Louisiana                                      30°26′58.7″         91°11′00.4″
 El Paso, Texas                                              31°45′36.4″         106°29′13.0″
 Tacoma, Washington                                          47°14′58.4″         122°26′19.4″
 Mobile, Alabama                                             30°41′36.7″         88°02′33.0″
 Harrisburg, Pennsylvania                                    40°15′43.3″         76°52′57.9″
 Albuquerque, New Mexico                                     35°05′01.2″         106°39′07.1″
 Canton, Ohio                                                40°47′50.2″         81°22′36.4″
 Chattanooga, Tennessee/Georgia                              35°02′41.3″         85°18′31.8″
 Wichita, Kansas                                             37°41′30.1″         97°20′17.2″
 Charleston, South Carolina                                  32°46′35.6″         79°55′52.3″
 San Juan, Puerto Rico                                       18°27′52.8″         66°06′58.6″
 Little Rock-North Little Rock, Arkansas                     34°44′42.3″         92°16′37.5″
 Las Vegas, Nevada                                           36°10′19.9″         115°08′40.0″
 Columbia, South Carolina                                    34°00′02.6″         81°01′59.3″
 Fort Wayne, Indiana                                         41°04′21.2″         85°08′25.9″
 Bakersfield, California                                     35°22′30.9″         119°01′19.4″
 Davenport-Rock Island-Moline, IA/IL                         41°31′00.1″         90°35′00.5″
 Shreveport, Louisiana                                       32°30′46.5″         93°44′58.6″
 Des Moines, Iowa                                            41°35′14.0″         93°37′00.8″
 Peoria, Illinois                                            40°41′42.1″         89°35′33.4″
 Newport News-Hampton, Virginia                              36°59′30.5″         76°25′58.8″
 Jackson, Mississippi                                        32°17′56.5″         90°11′06.3″
 Augusta, Georgia/South Carolina                             33°28′20.5″         81°57′59.4″
 Spokane, Washington                                         47°39′31.6″         117°25′36.8″
 Corpus Christi, Texas                                       27°47′52.1″         97°23′46.0″
 Madison, Wisconsin                                          43°04′23.0″         89°22′55.4″
 Colorado Springs, Colorado                                  38°50′07.0″         104°49′17.9″

             Note: The geographic coordinates are originally from the Department of Commerce publication of
             1947: “Air-line Distances Between Cities in the United States” and from data supplied by the
             National Geodetic Survey and converted to the reference system of North American Datum 1983
             using the National Geodetic Survey's NADCON program. The coordinates are determined by using
             the first city mentioned as the center of the urban area.

[63 FR 68971, Dec. 14, 1998]

47 CFR 90.741 (enhanced display)                                                                    page 491 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                                 47 CFR 90.743
Private Land Mobile Radio Services

§ 90.743 Renewal requirements.
Until January 1, 2023, all licensees seeking renewal of their authorizations at the end of their license term must file
a renewal application in accordance with the provisions of § 1.949 of this chapter. Licensees must demonstrate, in
their application, that:

     (a) They have provided “substantial” service during their past license term. “Substantial” service is defined in
         this rule as service that is sound, favorable, and substantially above a level of mediocre service that just
         might minimally warrant renewal; and

     (b) They have substantially complied with applicable FCC rules, policies, and the Communications Act of
         1934, as amended.

[82 FR 41548, Sept. 1, 2017]

§ 90.745 Phase I licensee service areas.
     (a) A Phase I licensee's service area shall be defined by the predicted 38 dBu service contour of its authorized
         base station or fixed station transmitting on frequencies in the 220–221 MHz band at its initially
         authorized location or at the location authorized in accordance with §§ 90.751, 90.753, 90.755 and
         90.757 if the licensee has sought modification of its license to relocate its initially authorized base
         station. The Phase I licensee's predicted 38 dBu service contour is calculated using the F(50,50) field
         strength chart for Channels 7–13 in § 73.699 (Fig. 10) of this chapter, with a 9 dB correction factor for
         antenna height differential, and is based on the authorized effective radiated power (ERP) and antenna
         height-above-average-terrain of the licensee's base station or fixed station. Phase I licensees are
         permitted to add, remove, or modify transmitter sites within their existing service area without prior
         notification to the Commission so long as their predicted 38 dBu service contour is not expanded. The
         incumbent licensee must, however, notify the Commission within 30 days of the completion of any
         changes in technical parameters or additional stations constructed through a minor modification of its
         license. Such notification must be made by submitting the appropriate FCC form and must include the
         appropriate filing fee, if any. These minor modification applications are not subject to public notice and
         petition to deny requirements or mutually exclusive applications.

     (b) Phase I licensees holding authorizations for service areas that are contiguous and overlapping may
         exchange these authorizations for a single license, authorizing operations throughout the contiguous and
         overlapping service areas. Phase I licensees exercising this license exchange option must submit specific
         information for each of their external base station sites.

[63 FR 32591, June 12, 1998]

§ 90.751 Minor modifications of Phase I, non-nationwide licenses.
Phase I non-nationwide licensees will be given an opportunity to seek modification of their license to relocate their
initially authorized base station, i.e., locate their base station at a site other than its initially authorized location. The
conditions under which modifications will be granted and the procedures for applying for license modifications are
described in §§ 90.753, 90.757 and 1.929 of this chapter. For CMRS licensees, these modifications will be treated
as minor modifications in accordance with § 1.929 of this chapter.

[63 FR 68973, Dec. 14, 1998]

47 CFR 90.751 (enhanced display)                                                                               page 492 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.753
Private Land Mobile Radio Services

§ 90.753 Conditions of license modification.
     (a) Except as provided in paragraphs (b), and (c) of this section, a Phase I non nationwide licensee may
         modify its authorization to relocate its authorized base station up to one-half the distance over 120 km
         toward any co-channel licensee's initially authorized base station, to a maximum distance of 8 km.

     (b) A Phase I non-nationwide licensee with an authorized base station located outside a Designated Filing
         Area (DFA) (see Public Notice, DA 86–173, 52 FR 1302 (January 12, 1987)) may modify its authorization
         to relocate its authorized base station up to one-half the distance over 120 km toward any co-channel
         licensee's initially authorized base station, to a maximum distance of 25 km, so long as the base station is
         relocated no more than 8 km inside of any DFA (i.e., no more than 8 km from the nearest DFA boundary
         line).

     (c) A Phase I non-nationwide licensee that has been granted Special Temporary Authority (STA) to operate at
         an alternative base station location may modify its authorization to seek permanent authorization at that
         location, regardless of whether locating the station at the STA site is in strict conformance with the
         provisions of paragraphs (a) and (b) of this section, if the licensee certifies that such a modification is in
         conformance with §§ 90.723 and 90.729 and:

           (1) It has constructed its base station and has placed it in operation, or commenced service, at the STA
               site on or before January 26, 1996; or

           (2) It has taken delivery of its base station transceiver on or before January 26, 1996.

     (d) The application for a Phase I non-nationwide licensee proposing a base station modification resulting in
         less than 120 km separation from a co-channel licensee's initially authorized base station will be accepted
         by the Commission only with the consent of that co-channel licensee, as evidenced in a statement
         submitted concurrently with the licensee's application submission on FCC Form 601.

     (e) The application of a Phase I non-nationwide licensee proposing a base station modification resulting in at
         least a 120 km separation from each co-channel licensee's initially authorized base station but more than
         one-half the distance over 120 km toward any co-channel licensee's initially authorized base station will
         be accepted by the Commission only with the consent of that co-channel licensee, as evidenced in a
         statement submitted concurrently with the licensee's submission on FCC Form 601.

[61 FR 3845, Feb. 2, 1996, as amended at 63 FR 68973, Dec. 14, 1998]

§ 90.757 Construction requirements.
     (a) Except as provided in paragraph (b) of this section, a Phase I non-nationwide licensee that is granted
         modification of its authorization to relocate its base station must construct its base station and place it in
         operation, or commence service, on all authorized channels on or before August 15, 1996, or within 12
         months of initial grant date, whichever is later. The authorization of a licensee that does not construct its
         base station and place it in operation, or commence service, by this date, cancels automatically and must
         be returned to the Commission.

     (b) A Phase I non-nationwide licensee with a base station authorized at a location north of Line A must
         construct its base station and place it in operation, or commence service, on all authorized channels
         within 12 months of initial grant date, or within 12 months of the date of the release of the terms of an
         agreement between the United States and Canadian governments on the sharing of 220–222 MHz

47 CFR 90.757(b) (enhanced display)                                                                      page 493 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                            47 CFR 90.761
Private Land Mobile Radio Services

           spectrum between the two countries, whichever is later. The authorization of a licensee that does not
           construct its base station and place it in operation, or commence service, by this date, cancels
           automatically and must be returned to the Commission.

[61 FR 3845, Feb. 2, 1996]

    POLICIES GOVERNING THE LICENSING AND USE OF PHASE II EA, REGIONAL AND NATIONWIDE SYSTEMS

Source: 62 FR 15998, 15999, Apr. 3, 1997, unless otherwise noted.

§ 90.761 EA and Regional licenses.
     (a) EA licenses for spectrum blocks listed in Table 2 of § 90.721(b) are available in 175 Economic Areas
         (EAs) as defined in § 90.7.

     (b) Regional licenses for spectrum blocks listed in Table 2 of § 90.721(b) are available in six Regional
         Economic Area Groupings (REAGs) as defined in § 90.7.

§ 90.763 EA, Regional and nationwide system operations.
     (a) A nationwide licensee authorized pursuant to § 90.717(a) may construct and operate any number of land
         mobile or paging base stations, or fixed stations, anywhere in the Nation, and transmit on any of its
         authorized channels, provided that the licensee complies with the requirements of § 90.733(i).

     (b) An EA or Regional licensee authorized pursuant to § 90.761 may construct and operate any number of
         land mobile or paging base stations, or fixed stations, anywhere within its authorized EA or REAG, and
         transmit on any of its authorized channels, provided that:

           (1) The licensee affords protection to all authorized co-channel Phase I non-nationwide base stations as
               follows:

                 (i)   The EA or Regional licensee must locate its land mobile or paging base stations, or fixed
                       stations transmitting on base station transmit frequencies, at least 120 km from the land
                       mobile or paging base stations, or fixed stations transmitting on base station transmit
                       frequencies, of co-channel Phase I licensees, except that separations of less than 120 km shall
                       be considered on a case-by-case basis upon submission by the EA or Regional licensee of:

                       (A) A technical analysis demonstrating at least 10 dB protection to the predicted 38 dBu
                           service contour of the co-channel Phase I licensee, i.e., demonstrating that the predicted
                           28 dBu interfering contour of the EA or Regional licensee's base station or fixed station
                           does not overlap the predicted 38 dBu service contour of the co-channel Phase I licensee's
                           base station or fixed station; or

                       (B) A written letter from the co-channel Phase I licensee consenting to a separation of less
                           than 120 km, or to less than 10 dB protection to the predicted 38 dBu service contour of
                           the licensee's base station or fixed station.

                 (ii) The Phase I licensee's predicted 38 dBu service contour referred to in paragraph (a)(1)(i) of this
                      section is calculated using the F(50,50) field strength chart for Channels 7–13 in § 73.699 (Fig.
                      10) of this chapter, with a 9 dB correction factor for antenna height differential, and is based on
                      the licensee's authorized effective radiated power and antenna height-above-average-terrain.
47 CFR 90.763(b)(1)(ii) (enhanced display)                                                                 page 494 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.763(b)(2)
Private Land Mobile Radio Services

                      The EA or Regional licensee's predicted 28 dBu interfering contour referred to in paragraph
                      (a)(1)(i) of this section is calculated using the F(50,10) field strength chart for Channels 7–13 in
                      § 73.699 (Fig. 10a) of this chapter, with a 9 dB correction factor for antenna height differential.

           (2) The licensee complies with the requirements of § 90.733(i).

           (3) The licensee limits the field strength of its base stations, or fixed stations operating on base station
               transmit frequencies, in accordance with the provisions of § 90.771.

           (4) Upon request by a licensee or the Commission, an EA or regional licensee shall furnish the technical
               parameters, location and coordinates of the completion of the addition, removal, relocation or
               modification of any of its facilities within the EA or region. The EA or regional licensee must provide
               such information within ten (10) days of receiving written notification.

     (c) In the event that the authorization for a co-channel Phase I base station, or fixed station transmitting on
         base station transmit frequencies, within an EA or Regional licensee's border is terminated or revoked, the
         EA or Regional licensee's channel obligations to such stations will cease upon deletion of the facility from
         the Commission's official licensing records, and the EA or Regional licensee then will be able to construct
         and operate without regard to the previous authorization.

[62 FR 15998, 15999, Apr. 3, 1997, as amended at 63 FR 68973, Dec. 14, 1998]

§ 90.765 Licenses term for Phase II licenses.
Nationwide licenses authorized pursuant to § 90.717(a), EA and Regional licenses authorized pursuant to § 90.761,
and non-nationwide licenses authorized pursuant to §§ 90.720 and 90.719(c) will be issued for a term not to exceed
ten years.

§ 90.767 Construction and implementation of EA and Regional licenses.
     (a) An EA or Regional licensee must construct a sufficient number of base stations (i.e., base stations for
         land mobile and/or paging operations) to provide coverage to at least one-third of the population of its EA
         or REAG within five years of the issuance of its initial license and at least two-thirds of the population of
         its EA or REAG within ten years of the issuance of its initial license. Licensees may, in the alternative,
         provide substantial service to their licensed areas at the appropriate five- and ten-year benchmarks.

     (b) Licensees must notify the Commission in accordance with § 1.946 of this chapter of compliance with the
         Construction requirements of paragraph (a) of this section.

     (c) Failure by an EA or Regional licensee to meet the construction requirements of paragraph (a) of this
         section, as applicable, will result in automatic cancellation of its entire EA or Regional license. In such
         instances, EA or Regional licenses will not be converted to individual, site-by-site authorizations for
         already constructed stations.

     (d) EA and Regional licensees will not be permitted to count the resale of the services of other providers in
         their EA or REAG, e.g., incumbent, Phase I licensees, to meet the construction requirement of paragraph
         (a) of this section, as applicable.

     (e) EA and Regional licensees will not be required to construct and place in operation, or commence service
         on, all of their authorized channels at all of their base stations or fixed stations.

[69 FR 75172, Dec. 15, 2004]

47 CFR 90.767(e) (enhanced display)                                                                        page 495 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                           47 CFR 90.769
Private Land Mobile Radio Services

§ 90.769 Construction and implementation of Phase II nationwide licenses.
     (a) A nationwide licensee must construct a sufficient number of base stations (i.e., base stations for land
         mobile and/or paging operations) to provide coverage to a composite area of at least 750,000 square
         kilometers or 37.5 percent of the United States population within five years of the issuance of its initial
         license and a composite area of at least 1,500,000 square kilometers or 75 percent of the United States
         population within ten years of the issuance of its initial license. Licensees may, in the alternative, provide
         substantial service to their licensed areas at the appropriate five- and ten-year benchmarks.

     (b) Licensees must notify the Commission in accordance with § 1.946 of this chapter of compliance with the
         Construction requirements of paragraph (a) of this section.

     (c) Failure by a nationwide licensee to meet the construction requirements of paragraph (a) of this section, as
         applicable, will result in automatic cancellation of its entire nationwide license. In such instances,
         nationwide licenses will not be converted to individual, site-by-site authorizations for already constructed
         stations.

     (d) Nationwide licensees will not be required to construct and place in operation, or commence service on, all
         of their authorized channels at all of their base stations or fixed stations.

[69 FR 75173, Dec. 15, 2004]

§ 90.771 Field strength limits.
     (a) The transmissions from base stations, or fixed stations transmitting on base station transmit frequencies,
         of EA and Regional licensees may not exceed a predicted 38 dBu field strength at their EA or REAG border.
         The predicted 38 dBu field strength is calculated using the F(50,50) field strength chart for Channels 7–13
         in § 73.699 (Fig. 10) of this chapter, with a 9 dB correction factor for antenna height differential.

     (b) Licensees will be permitted to exceed the predicted 38 dBu field strength required in paragraph (a) of this
         section if all affected, co-channel EA and Regional licensees agree to the higher field strength.

     (c) EA and Regional licensees must coordinate to minimize interference at or near their EA and REAG borders,
         and must cooperate to resolve any instances of interference in accordance with the provisions of §
         90.173(b).

Subpart U—Competitive Bidding Procedures for 900 MHz Specialized Mobile Radio Service

Source: 60 FR 48919, Sept. 21, 1995, unless otherwise noted.

§ 90.801 900 MHz SMR spectrum subject to competitive bidding.
Mutually exclusive initial applications for 900 MHz SMR service licenses are subject to competitive bidding. The
general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise
provided in this subpart.

[67 FR 43575, July 9, 2002]

§§ 90.802-90.803 [Reserved]

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                                                                                                          47 CFR 90.804
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§ 90.804 Aggregation of 900 MHz SMR licenses.
The Commission will license each 10-channel block in the 900 MHz SMR spectrum separately. Applicants may
aggregate across spectrum blocks within the limitation specified in § 20.6(b) of this chapter.

§§ 90.805-90.806 [Reserved]
§ 90.807 Submission of upfront payments.
Each bidder in the 900 MHz SMR auction will be required to submit an upfront payment of $0.02 per MHz per pop,
for the maximum number of licenses (in terms of MHz-pops) on which it intends to bid.

[67 FR 45376, July 9, 2002]

§ 90.808 [Reserved]
§ 90.809 License grants.
MTA licenses pursued through competitive bidding will be granted pursuant to the requirements specified in § 1.945
of this chapter.

[67 FR 45376, July 9, 2002]

§ 90.810 Bidding credits for small businesses.
A winning bidder that qualifies as a small business, as defined in § 90.814(b)(1), or a consortium of small
businesses may use a bidding credit of 15 percent to lower the cost of its winning bid on any of the blocks identified
in § 90.617(d), Table 4B. A winning bidder that qualifies as a small business, as defined in § 90.814(b)(2), or a
consortium of small businesses may use a bidding credit of 10 percent to lower the cost of its winning bid on any of
the blocks identified in § 90.617(d), Table 4B.

[68 FR 43000, July 21, 2003]

§ 90.811 Reduced down payment for licenses won by small businesses.
Each winning bidder that qualifies as a small business shall make a down payment equal to ten percent of its
winning bid (less applicable bidding credits); a winning bidder shall bring its total amount on deposit with the
Commission (including upfront payment) to five percent of its net winning bid within five (5) business days after the
auction closes, and the remainder of the down payment (five percent) shall be paid within five (5) business days
following Public Notice that the Commission is prepared to award the license. The Commission generally will grant
the license within ten (10) business days after receipt of the remainder of the down payment.

§ 90.812 [Reserved]
§ 90.813 Partitioned licenses and disaggregated spectrum.
     (a) Eligibility. Parties seeking approval for partitioning and disaggregation shall request an authorization for
         partial assignment of a license pursuant to § 1.948 of this chapter.

     (b) Technical standards —

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                                                                                                        47 CFR 90.813(b)(1)
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           (1) Partitioning. In the case of partitioning, requests for authorization for partial assignment of a license
               must include, as attachments, a description of the partitioned service area and a calculation of the
               population of the partitioned service area and the licensed geographic service area. The partitioned
               service area shall be defined by coordinate points at every 3 degrees along the partitioned service
               area unless an FCC recognized service area is utilized (i.e., Major Trading Area, Basic Trading Area,
               Metropolitan Service Area, Rural Service Area or Economic Area) or county lines are followed. The
               geographic coordinates must be specified in degrees, minutes, and seconds to the nearest second
               of latitude and longitude and must be based upon the 1927 North American Datum (NAD27).
               Applicants may supply geographical coordinates based on 1983 North American Datum (NAD83) in
               addition to those required (NAD27). In the case where an FCC recognized service area or county
               lines are utilized, applicants need only list the specific area(s) (through use of FCC designations or
               county names) that constitute the partitioned area.

           (2) Disaggregation. Spectrum may be disaggregated in any amount.

           (3) Combined partitioning and disaggregation. The Commission will consider requests for partial
               assignment of licenses that propose combinations of partitioning and disaggregation.

     (c) Installment payments —

           (1) Apportioning the balance on installment payment plans. When a winning bidder elects to pay for its
               license through an installment payment plan pursuant to § 90.812, and partitions its licensed area or
               disaggregates spectrum to another party, the outstanding balance owed by the licensee on its
               installment payment plan (including accrued and unpaid interest) shall be apportioned between the
               licensee and partitionee or disaggregatee. Both parties will be responsible for paying their
               proportionate share of the outstanding balance to the U.S. Treasury. In the case of partitioning, the
               balance shall be apportioned based upon the ratio of the population of the partitioned area to the
               population of the entire original license area calculated based upon the most recent census data. In
               the case of disaggregation, the balance shall be apportioned based upon the ratio of the amount of
               spectrum disaggregated to the amount of spectrum allocated to the licensed area.

           (2) Parties not qualified for installment payment plans.

                 (i)   The partitionee or disaggregatee shall, as a condition of the approval of the partial assignment
                       application, pay its entire pro rata amount within 30 days of Public Notice conditionally granting
                       the partial assignment application. Failure to meet this condition will result in a rescission of
                       the grant of the partial assignment application.

                (ii) The licensee shall be permitted to continue to pay its pro rata share of the outstanding balance
                     and shall receive new financing documents (promissory note, security agreement) with a
                     revised payment obligation, based on the remaining amount of time on the original installment
                     payment schedule. These financing documents will replace the licensee's existing financing
                     documents which shall be marked “superseded” and returned to the licensee upon receipt of
                     the new financing documents. The original interest rate, established pursuant to §
                     1.2110(g)(3)(i) of this chapter at the time of the grant of the initial license in the market, shall
                     continue to be applied to the licensee's portion of the remaining government obligation. The
                     Commission will require, as a further condition to approval of the partial assignment
                     application, that the licensee execute and return to the U.S. Treasury the new financing
                     documents within 30 days of the Public Notice conditionally granting the partial assignment
                     application. Failure to meet this condition will result in the automatic cancellation of the grant
                     of the partial assignment application.

47 CFR 90.813(c)(2)(ii) (enhanced display)                                                                 page 498 of 516
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                (iii) A default on the licensee's payment obligation will only affect the licensee's portion of the
                      market.

           (3) Parties qualified for installment payment plans.

                 (i)   Where both parties to a partitioning or disaggregation agreement qualify for installment
                       payments, the partitionee or disaggregatee will be permitted to make installment payments on
                       its portion of the remaining government obligation, as calculated according to paragraph (d)(1)
                       of this section.

                 (ii) Each party will be required, as a condition to approval of the partial assignment application, to
                      execute separate financing documents (promissory note, security agreement) agreeing to pay
                      their pro rata portion of the balance due (including accrued and unpaid interest) based upon the
                      installment payment terms for which they qualify under the rules. The financing documents
                      must be returned to the U.S. Treasury within thirty (30) days of the Public Notice conditionally
                      granting the partial assignment application. Failure by either party to meet this condition will
                      result in the automatic cancellation of the grant of the partial assignment application. The
                      interest rate, established pursuant to § 1.2110(g)(3)(i) of this chapter at the time of the grant of
                      the initial license in the market, shall continue to be applied to both parties' portion of the
                      balance due. Each party will receive a license for their portion of the partitioned market or
                      disaggregated spectrum.

                (iii) A default on an obligation will only affect that portion of the market area held by the defaulting
                      party.

                (iv) Partitionees and disaggregatees that qualify for installment payment plans may elect to pay
                     some of their pro rata portion of the balance due in a lump sum payment to the U.S. Treasury
                     and to pay the remaining portion of the balance due pursuant to an installment payment plan.

     (d) License term. The license term for a partitioned license area and for disaggregated spectrum shall be the
         remainder of the original licensee's license term as provided for in § 90.665(a).

[62 FR 41219, July 31, 1997, as amended at 67 FR 45376, July 9, 2002; 68 FR 43001, July 21, 2003; 82 FR 41549, Sept. 1, 2017]

§ 90.814 Definitions.
     (a) Scope. The definitions in this section apply to §§ 90.810 through 90.813, unless otherwise specified in
         those sections.

     (b) A small business is an entity that either:

           (1) Together with its affiliates, persons or entities that hold attributable interests in such entity, and their
               affiliates, has average gross revenues that are not more than $3 million for the preceding three years;
               or

           (2) Together with its affiliates, persons or entities that hold attributable interests in such entity, and their
               affiliates, has average gross revenues that are not more than $15 million for the preceding three
               years.

[60 FR 48919, Sept. 21, 1995, as amended at 67 FR 45376, July 9, 2002; 68 FR 43001, July 21, 2003]

47 CFR 90.814(b)(2) (enhanced display)                                                                          page 499 of 516
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                                                                                                         47 CFR 90.815
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§ 90.815 Records maintenance and definitions.
     (a) Records maintenance. All winning bidders qualifying as small businesses, shall maintain at their principal
         place of business an updated file of ownership, revenue and asset information, including any documents
         necessary to establish eligibility as a small business, pursuant to § 90.814, and/or a consortium of small
         businesses. Licensees (and their successors in interest) shall maintain such files for the term of the
         license.

     (b) Definitions. The term small business used in this section is defined in § 90.814.

[68 FR 43001, July 21, 2003]

Subpart V—Competitive Bidding Procedures for 800 MHz Specialized Mobile Radio Service

Source: 61 FR 6159, Feb. 16, 1996, unless otherwise noted.

§ 90.901 800 MHz SMR spectrum subject to competitive bidding.
Mutually exclusive initial applications for 800 MHz band licenses in Spectrum Blocks A through V are subject to
competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will
apply unless otherwise provided in this subpart.

[67 FR 45377, July 9, 2002]

§ 90.902 [Reserved]
§ 90.903 Competitive bidding mechanisms.
     (a) Sequencing. The Wireless Telecommunications Bureau will establish and may vary the sequence in which
         800 MHz SMR licenses for Spectrum Blocks A through V will be auctioned.

     (b) Grouping.

           (1) All EA licenses for Spectrum Blocks A through V will be auctioned simultaneously, unless the
               Wireless Telecommunications Bureau announces, by Public Notice prior to the auction, an
               alternative method of grouping these licenses for auction.

           (2) Spectrum blocks D through V. All EA licenses for Spectrum Blocks D through V will be auctioned by
               the following Regions:

                 (i)   Region 1 (Northeast): The Northeast Region consists of the following MTAs: Boston-
                       Providence, Buffalo-Rochester, New York, Philadelphia, and Pittsburgh.

                 (ii) Region 2 (South): The South Region consists of the following MTAs: Atlanta, Charlotte-
                      Greensboro-Greenville-Raleigh, Jacksonville, Knoxville, Louisville-Lexington-Evansville,
                      Nashville, Miami-Fort Lauderdale, Richmond-Norfolk, Tampa-St. Petersburg-Orlando, and
                      Washington-Baltimore; and, Puerto Rico and United States Virgin Islands.

                (iii) Region 3 (Midwest): The Midwest Region consists of the following MTAs: Chicago, Cincinnati-
                      Dayton, Cleveland, Columbus, Des Moines-Quad Cities, Detroit, Indianapolis, Milwaukee,
                      Minneapolis-St. Paul, and Omaha.

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                                                                                                   47 CFR 90.903(b)(2)(iv)
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                (iv) Region 4 (Central): The Central Region consists of the following MTAs: Birmingham, Dallas-Fort
                     Worth, Denver, El Paso-Albuquerque, Houston, Kansas City, Little Rock, Memphis-Jackson, New
                     Orleans-Baton Rouge, Oklahoma City, San Antonio, St. Louis, Tulsa, and Wichita.

                 (v) Region 5 (West): The West Region consists of the following MTAs: Honolulu, Los Angeles-San
                     Diego, Phoenix, Portland, Salt Lake City, San Francisco-Oakland-San Jose, Seattle (including
                     Alaska), and Spokane-Billings; and, American Samoa, Guam, and the Northern Mariana Islands.

[67 FR 45377, July 9, 2002]

§ 90.904 Aggregation of EA licenses.
The Commission will license each Spectrum Block A through V in the 800 MHz band separately. Applicants may
aggregate across spectrum blocks within the limitations specified in § 20.6 of this chapter.

[62 FR 41221, July 31, 1997]

§ 90.905 [Reserved]
§ 90.909 License grants.
EA licenses pursued through competitive bidding procedures will be granted pursuant to the requirements specified
in § 1.945 of this chapter.

[67 FR 45377, July 9, 2002]

§ 90.910 Bidding credits.
A winning bidder that qualifies as a very small business, as defined in § 90.912(b)(2), or a consortium of very small
businesses may use a bidding credit of 35 percent to lower the cost of its winning bid on Spectrum Blocks A
through V. A winning bidder that qualifies as a small business, as defined in § 90.912(b)(1), or a consortium of small
businesses may use a bidding credit of 25 percent to lower the cost of its winning bid on Spectrum Blocks A
through V.

[68 FR 43001, July 21, 2003]

§ 90.911 Partitioned licenses and disaggregated spectrum.
     (a) Eligibility. Parties seeking approval for partitioning and disaggregation shall request an authorization for
         partial assignment of a license pursuant to § 90.153(c).

     (b) Technical standards —

           (1) Partitioning. In the case of partitioning, requests for authorization for partial assignment of a license
               must include, as attachments, a description of the partitioned service area and a calculation of the
               population of the partitioned service area and the licensed geographic service area. The partitioned
               service area shall be defined by coordinate points at every 3 degrees along the partitioned service
               area unless an FCC recognized service area is utilized (i.e., Major Trading Area, Basic Trading Area,
               Metropolitan Service Area, Rural Service Area or Economic Area) or county lines are followed. The
               geographic coordinates must be specified in degrees, minutes, and seconds to the nearest second
               of latitude and longitude and must be based upon the 1983 North American Datum (NAD83). In the
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                                                                                                            47 CFR 90.911(b)(2)
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                case where an FCC recognized service area or county lines are utilized, applicants need only list the
                specific area(s) (through use of FCC designations or county names) that constitute the partitioned
                area.

           (2) Disaggregation. Spectrum may be disaggregated in any amount.

           (3) Combined partitioning and disaggregation. The Commission will consider requests for partial
               assignment of licenses that propose combinations of partitioning and disaggregation.

     (c) License term. The license term for a partitioned license area and for disaggregated spectrum shall be the
         remainder of the original licensee's license term as provided for in §§ 90.629(a), 90.665(a) or 90.685(a).

     (d) Construction and channel usage requirements—incumbent licensees. Parties seeking to acquire a
         partitioned license or disaggregated spectrum from an incumbent licensee will be required to construct
         and commence “service to subscribers” all facilities acquired through such transactions within the
         original construction deadline for each facility as set forth in §§ 90.629 and 90.683. Failure to meet the
         individual construction deadline will result in the automatic termination of the facility's authorization.

     (e) Certification concerning relocation of incumbent licensees. Parties seeking approval of a partitioning or
         disaggregation agreement pursuant to this section must include a certification with their partial
         assignment of license application as to which party will be responsible for meeting the incumbent
         relocation requirements set forth at § 90.699.

[62 FR 41221, July 31, 1997, as amended at 63 FR 68973, Dec. 14, 1998; 67 FR 45377, July 9, 2002; 82 FR 41549, Sept. 1, 2017]

§ 90.912 Definitions.
     (a) Scope. The definitions in this section apply to §§ 90.910 and 90.911, unless otherwise specified in those
         sections.

     (b) Small and very small businesses.

           (1) A small business is an entity that together with its affiliates and controlling interests, has average
               gross revenues that do not exceed $15 million for the three preceding years; or

           (2) A very small business is an entity that together with its affiliates and controlling interests, has
               average gross revenues that do not exceed $3 million for the three preceding years.

[62 FR 41222, July 31, 1997, as amended at 67 FR 45377, July 9, 2002; 68 FR 43001, July 21, 2003]

§ 90.913 Record maintenance and definitions.
     (a) Records maintenance. All winning bidders qualifying as small or very small businesses, shall maintain at
         their principal place of business an updated file of ownership, revenue and asset information, including
         any document necessary to establish eligibility as a small or very small business, as defined in § 90.912,
         and/or consortium of small businesses (or consortium of very small businesses). Licensees (and their
         successors in interest) shall maintain such files for the term of the license.

     (b) Definitions. The terms small and very small business used in this section are defined in § 90.912.

[68 FR 43001, July 21, 2003]

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                                                                                                         47 CFR 90.1001
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Subpart W—Competitive Bidding Procedures for the 220 MHz Service

Source: 62 FR 15999, Apr. 3, 1997, unless otherwise noted.

§ 90.1001 220 MHz service subject to competitive bidding.
Mutually exclusive initial applications for 200 MHz geographic area licenses are subject to competitive bidding. The
general competitive bidding procedures set forth in part 1, subpart Q of this chapter will apply unless otherwise
provided in this subpart.

[67 FR 45377, July 9, 2002]

§§ 90.1003-90.1015 [Reserved]
§ 90.1017 Bidding credits for small businesses and very small businesses.
A winning bidder that qualifies as a small business, as defined in § 90.1021(b)(1), or a consortium of small
businesses may use a bidding credit of 25 percent to lower the cost of its winning bid. A winning bidder that
qualifies as a very small business, as defined in § 90.1021(b)(2), or a consortium of very small businesses may use
a bidding credit of 35 percent to lower the cost of its winning bid.

[68 FR 43001, July 21, 2003]

§ 90.1019 Eligibility for partitioned licenses.
     (a) Eligibility. Parties seeking approval for partitioning and disaggregation shall request authorization for
         partial assignment of a license pursuant to § 1.948 of this chapter. The Commission will consider
         applications that propose combinations of partitioning and disaggregation.

           (1) Phase I non-nationwide licensees may apply to partition their licensed geographic service area or
               disaggregate their licensed spectrum after constructing their systems and placing their in operation
               or commencing service in accordance with the provisions in § 90.725(f) of this part.

           (2) Phase I nationwide licensees may apply to partition their licensed geographic service area or
               disaggregate their licensed spectrum after constructing at least 40 percent of the geographic areas
               designated in their applications in accordance with the provisions in § 90.725(a) of this part.

           (3) Phase II licensees may apply to partition their licensed geographic service area or disaggregate their
               licensed spectrum at any time following the grant of their licenses.

           (4) Phase I and Phase II licensees authorized to operate on Channels 161 through 170 or Channels 181
               through 185 are not eligible to partition their geographic service area or disaggregate their licensed
               spectrum.

     (b) Partitioning. In the case of partitioning, applicants and licensees must file FCC Form 603 pursuant to §
         1.948 and list the partitioned service area on a schedule to the application. The geographic coordinates
         must be specified in degrees, minutes, and seconds to the nearest second of latitude and longitude and
         must be based upon the 1983 North American Datum (NAD83). In the case where an FCC-recognized
         service area or county lines are utilized, applicants need only list the specific area(s) through use of FCC
         designations or county names that constitute the partitioned area.

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     (c) License term. The license term for a partitioned license area and for disaggregated spectrum shall be the
         remainder of the original licensee's license term.

[63 FR 49295, Sept. 15, 1998, as amended at 63 FR 68973, Dec. 14, 1998; 65 FR 39560, June 27, 2000; 82 FR 41549, Sept. 1,
2017]

§ 90.1021 Definitions concerning competitive bidding process.
     (a) Scope. The definitions in this section apply to §§ 90.1001 through 90.1025, unless otherwise specified in
         those sections.

     (b) Small and very small business.

           (1) A small business is an entity that, together with its affiliates and controlling interests, has average
               gross revenues that are not more than $15 million for the preceding three years.

           (2) A very small business is an entity that, together with its affiliates and controlling interests, has
               average gross revenues that are not more than $3 million for the preceding three years.

[62 FR 15999, Apr. 3, 1997, as amended at 67 FR 46376, July 9, 2002; 68 FR 43001, July 21, 2003]

§ 90.1023 Records maintenance and definitions.
     (a) Records maintenance. All winning bidders qualifying as small or very small businesses shall maintain at
         their principal place of business an updated file of ownership, revenue, and asset information, including
         any documents necessary to establish eligibility as a small business or very small business, as defined in
         § 90.1021, and/or consortium of small businesses (or consortium of very small businesses). Licensees
         (and their successors-in-interest) shall maintain such files for the term of the license. Applicants that do
         not obtain the license(s) for which they applied shall maintain such files until the grant of such license(s)
         is final, or one year from the date of the filing of their short-form application (FCC Form 175), whichever is
         earlier.

     (b) Definitions. The terms small and very small business used in this section are defined in § 90.1021.

[68 FR 43001, July 21, 2003]

§ 90.1025 Limitations on settlements.
The consideration that an individual or an entity will be permitted to receive for agreeing to withdraw an application
or a petition to deny will be limited by the provisions set forth in § 1.2105(c) of this chapter.

[67 FR 46378, July 9, 2002]

Subpart X—Competitive Bidding Procedures for Location and Monitoring Service

Source: 63 FR 40664, July 30, 1998, unless otherwise noted.

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                                                                                                            47 CFR 90.1101
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§ 90.1101 Location and Monitoring Service subject to competitive bidding.
Mutually exclusive initial applications for multilateration Location and Monitoring Service licenses are subject to
competitive bidding. The general competitive bidding procedures set forth in part 1, subpart Q of this chapter will
apply unless otherwise provided in this subpart.

[67 FR 45378, July 9, 2002]

§ 90.1103 Designated entities.
     (a) This section addresses certain issues concerning designated entities in the Location and Monitoring
         Service (LMS) subject to competitive bidding.

     (b) Eligibility for small business provisions.

           (1) A small business is an entity that, together with its affiliates and controlling interests, has average
               gross revenues not to exceed $15 million for the preceding three years.

           (2) A very small business is an entity that, together with its affiliates and controlling interests, has
               average gross revenues not to exceed $3 million for the preceding three years.

     (c) A winning bidder that qualifies as a small business, as defined in paragraph (b)(1) of this section, or a
         consortium of small businesses may use the bidding credit specified in § 1.2110(f)(2)(ii) of this chapter.
         A winning bidder that qualifies as a very small businesses, as defined in paragraph (b)(2) of this section,
         or a consortium of very small businesses may use the bidding credit specified in § 1.2110(f)(2)(i) of this
         chapter.

[63 FR 40664, July 30, 1998, as amended at 67 FR 45379, July 9, 2002; 68 FR 43001, July 21, 2003]

Subpart Y—Regulations Governing Licensing and Use of Frequencies in the 4940–4990 MHz
Band

Source: 68 FR 38639, June 30, 2003, unless otherwise noted.

§ 90.1201 Scope.
This subpart sets out the regulations governing use of the 4940–4990 MHz (4.9 GHz) band. It includes eligibility
requirements, and specific operational and technical standards for stations licensed in this band. The rules in this
subpart are to be read in conjunction with the applicable requirements contained elsewhere in this part; however, in
case of conflict, the provisions of this subpart shall govern with respect to licensing and operation in this band.

§ 90.1203 Eligibility.
     (a) Entities providing public safety services (as defined in § 90.523) are eligible to hold a Commission license
         for systems operating in the 4940–4990 MHz band. All of the requirements and conditions set forth in §
         90.523 also govern authorizations in the 4940–4990 MHz band.

     (b) 4.9 GHz band licensees may enter into sharing agreements or other arrangements for use of the spectrum
         with entities that do not meet the eligibility requirements in this section. However, all applications in the
         band are limited to operations in support of public safety.

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                                                                                                         47 CFR 90.1205
Private Land Mobile Radio Services

[85 FR 76480, Nov. 30, 2020, as amended at 86 FR 59869, Oct. 28, 2021]

§ 90.1205 Permissible operations.
     (a) Unattended and continuous operation is permitted.

     (b) Voice, data and video operations are permitted.

     (c) Aeronautical mobile operations are prohibited.

§ 90.1207 Licensing.
     (a) A 4940–4990 MHz band license gives the licensee authority to operate on any authorized channel in this
         band within its licensed area of operation. See § 90.1213. A 4940–4990 MHz band license will be issued
         for the geographic area encompassing the legal jurisdiction of the licensee or, in case of a
         nongovernmental organization, the legal jurisdiction of the state or local governmental entity supporting
         the nongovernmental organization.

     (b) Subject to § 90.1209, a 4940–4990 MHz band license gives the licensee authority to construct and
         operate any number of base stations anywhere within the area authorized by the license, except as
         follows:

           (1) A station is required to be individually licensed if:

                 (i)   International agreements require coordination;

                 (ii) Submission of an environmental assessment is required under § 1.1307 of this chapter; or

                (iii) The station would affect areas identified in § 1.924 of this chapter.

           (2) Any antenna structure that requires notification to the Federal Aviation Administration (FAA) must be
               registered with the Commission prior to construction under § 17.4 of this chapter.

     (c) A 4940–4990 MHz band license gives the licensee authority to operate base and mobile units (including
         portable and handheld units) and operate temporary (1 year or less) fixed stations anywhere within the
         area authorized by the license. Such licensees may operate base and mobile units and/or temporary fixed
         stations outside their authorized area to assist public safety operations with the permission of the
         jurisdiction in which the radio station is to be operated. Base and temporary fixed stations are subject to
         the requirements of paragraph (b) of this section.

     (d) Permanent fixed point-to-point and point-to-multipoint stations in the 4940–4990 MHz band must be
         licensed individually on a site-by-site basis. Such fixed stations are accorded primary status. Permanent
         fixed point-to-point and point-to-multipoint stations must use directional antennas with gains greater than
         9 dBi.

     (e) Applications for license in the 4940–4990 MHz band must include the following technical information.

           (1) The license for base/mobile, mobile-only or temporary fixed (1 year or less) stations will specify,
               among other parameters, the following technical information:

                 (i)   Coordinates (base).

                 (ii) Antenna height-to-tip (base and temporary fixed).

                (iii) Antenna height above average terrain (base).

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                                                                                                      47 CFR 90.1207(e)(1)(iv)
Private Land Mobile Radio Services

                (iv) Center frequency, emission designator, and ERP.

                (v) Number of units (mobile and temporary fixed).

                (vi) Area of operation (mobile and temporary fixed), which shall be limited to the geographic area
                     encompassing the legal jurisdiction of the licensee or, in case of a nongovernmental
                     organization, the legal jurisdiction of the state or local governmental entity supporting the
                     nongovernmental organization. However, applicants may define their areas of operation outside
                     of their areas of legal jurisdiction to assist public safety operations with the permission of the
                     jurisdiction(s) in which the mobile and/or temporary fixed stations are to be operated.

           (2) The license for permanent fixed point-to-point, point-to-multipoint and fixed receiver stations must
               include, among other parameters, the following technical information:

                 (i)   Transmitting station coordinates.

                (ii) Frequencies and polarizations.

                (iii) For the transmitting equipment, the tolerance, effective isotropic radiated power, emission
                      designator, and type of modulation (digital).

                (iv) For the transmitting antenna(s), the model, gain, antenna center line height(s) above ground
                     level and ground elevation above mean sea level.

                (v) Receiving station coordinates.

                (vi) For the receiving antenna(s), the model, gain, antenna center line height(s) above ground level
                     and ground elevation above mean sea level.

                (vii) Path azimuth and distance.

     (f) Licensees holding active authorizations for the 4940–4990 MHz band on March 30, 2023 shall file the
         complete site-by-site information described in paragraph (e) of this section for their existing radio
         systems in the Commission's Universal Licensing System by the compliance date specified in paragraph
         (g) of this section.

     (g) Paragraphs (e) and (f) of this section may contain information collection and/or recordkeeping
         requirements. Compliance with paragraphs (e) and (f) will not be required until this paragraph (g) is
         removed or contains a compliance date, which will not occur until the date specified in a final rule
         published by the FCC announcing that the Office of Management and Budget has completed review of any
         information collection requirements associated with paragraphs (e) and (f) of this section or that they
         have determined such review is not required, which date shall be no earlier than February 28, 2024.

[68 FR 38639, June 30, 2003, as amended at 69 FR 17959, Apr. 6, 2004; 74 FR 23803, May 21, 2009; 88 FR 12571, Feb. 28, 2023]

§ 90.1209 Policies governing the use of the 4940–4990 MHz band.
     (a) Channels in this band are available on a shared basis only and will not be assigned for the exclusive use of
         any licensee.

     (b) All licensees shall cooperate in the selection and use of channels in order to reduce interference and
         make the most effective use of the authorized facilities. Licensees of stations suffering or causing
         harmful interference are expected to cooperate and resolve this problem by mutually satisfactory
         arrangements. If licensees are unable to do so, the Commission may impose restrictions including

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                                                                                                      47 CFR 90.1209(c)
Private Land Mobile Radio Services

           specifying the transmitter power, antenna height, or area or hours of operation of the stations concerned.
           Further, the Commission may prohibit the use of any 4.9 GHz channel under a system license at a given
           geographical location when, in the judgment of the Commission, its use in that location is not in the public
           interest.

     (c) Licensees will make every practical effort to protect radio astronomy operations as specified in § 2.106,
         footnote US311 of this chapter.

     (d) Stations must be placed into operation within twelve (12) months from the date of grant in accordance
         with § 90.155. Licensees of temporary fixed stations must place at least one such station in operation
         within twelve months of license grant.

[68 FR 38639, June 30, 2003, as amended at 88 FR 12571, Feb. 28, 2023]

§ 90.1211 Regional plan.
     (a) To facilitate the shared use of the 4.9 GHz band, each region may submit a plan on guidelines to be used
         for sharing the spectrum within the region. Any such plan must be submitted to the Commission within 12
         months of the effective date of the rules.

     (b) Such plans must incorporate the following common elements:

           (1) Identification of the document as a plan for sharing the 4.9 GHz band with the region specified along
               with the names, business addresses, business telephone numbers and organizational affiliations of
               the chairperson(s) and all members of the planning committee.

           (2) A summary of the major elements of the plan and an explanation of how all eligible entities within
               the region were given an opportunity to participate in the planning process and to have their
               positions heard and considered fairly.

           (3) An explanation of how the plan was coordinated with adjacent regions.

           (4) A description of the coordination procedures for both temporary fixed and mobile operations,
               including but not limited to, mechanisms for incident management protocols, interference avoidance
               and interoperability.

     (c) Regional plans may be modified by submitting a written request, signed by the regional planning
         committee, to the Chief, Wireless Telecommunications Bureau. The request must contain the full text of
         the modification, and a certification that all eligible entities had a chance to participate in discussions
         concerning the modification and that any changes have been coordinated with adjacent regions.

Effective Date Note: At 69 FR 51959, Sept. 23, 2004, paragraph (a) of § 90.1211 was stayed indefinitely.

§ 90.1213 Band plan.
     (a) The following table lists center frequencies for channels in the 4940–4990 MHz band. Channel numbers 1
         through 5 and 14 through 18 are 1 MHz bandwidth channels, and channel numbers 6 through 13 are 5
         MHz bandwidth channels.

                    Center frequency (MHz)                  Bandwidth (MHz)             Channel numbers
           4940.5                                                              1                              1

47 CFR 90.1213(a) (enhanced display)                                                                    page 508 of 516
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                                                                                                           47 CFR 90.1213(b)
Private Land Mobile Radio Services

                     Center frequency (MHz)                  Bandwidth (MHz)                 Channel numbers
           4941.5                                                                   1                             2
           4942.5                                                                   1                             3
           4943.5                                                                   1                             4
           4944.5                                                                   1                             5
           4947.5                                                                   5                             6
           4952.5                                                                   5                             7
           4957.5                                                                   5                             8
           4962.5                                                                   5                             9
           4967.5                                                                   5                            10
           4972.5                                                                   5                            11
           4977.5                                                                   5                            12
           4982.5                                                                   5                            13
           4985.5                                                                   1                            14
           4986.5                                                                   1                            15
           4987.5                                                                   1                            16
           4988.5                                                                   1                            17
           4989.5                                                                   1                            18

     (b) The channels listed in the table in paragraph (a) of this section may be aggregated in any manner up to 50
         MHz for wider bandwidth operation. Nonetheless, applicants should request no more bandwidth than
         necessary for a particular use.

[77 FR 45506, Aug. 1, 2012, as amended at 78 FR 36684, June 19, 2013; 88 FR 12571, Feb. 28, 2023]

§ 90.1215 Power limits.
Except as provided in paragraph (f) of this section, the transmitting power of stations operating in the 4940–4990
MHz band must not exceed the maximum limits in this section.

     (a)

           (1) For base, mobile, and temporary fixed operations, the maximum conducted output power must not
               exceed:

                                                   Table 1 to Paragraph (a)(1)

                                                               Low power                            High power
                                                               maximum                              maximum
                             Channel
                                                               conducted                            conducted
                            bandwidth
                                                                 output                               output
                              (MHz)
                                                                 power                                power
                                                                 (dBm)                                (dBm)
                 1                                                                  7                                  20
                 5                                                                 14                                  27

47 CFR 90.1215(a)(1) (enhanced display)                                                                      page 509 of 516
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                                                                                                  47 CFR 90.1215(a)(2)
Private Land Mobile Radio Services

                                                           Low power                        High power
                                                           maximum                          maximum
                             Channel
                                                           conducted                        conducted
                            bandwidth
                                                             output                           output
                              (MHz)
                                                             power                            power
                                                             (dBm)                            (dBm)
                 10                                                          17                                 30
                 15                                                        18.8                               31.8
                 20                                                          20                                 33
                 30                                                        21.8                               34.8
                 40                                                          23                                 36
                 50                                                          24                                 37

           (2) High power devices are also limited to a peak power spectral density of 21 dBm per one MHz. High
               power devices using channel bandwidths other than those listed above are permitted; however, they
               are limited to peak power spectral density of 21 dBm/MHz. If transmitting antennas of directional
               gain greater than 9 dBi are used, both the maximum conducted output power and the peak power
               spectral density should be reduced by the amount in decibels that the directional gain of the antenna
               exceeds 9 dBi. However, high power point-to-point and point-to-multipoint operations (both fixed and
               temporary-fixed rapid deployment) may employ transmitting antennas with directional gain up to 26
               dBi without any corresponding reduction in the maximum conducted output power or spectral
               density. Corresponding reduction in the maximum conducted output power and peak power spectral
               density should be the amount in decibels that the directional gain of the antenna exceeds 26 dBi.

     (b) Low power devices are also limited to a peak power spectral density of 8 dBm per one MHz. Low power
         devices using channel bandwidths other than those listed above are permitted; however, they are limited
         to a peak power spectral density of 8 dBm/MHz. If transmitting antennas of directional gain greater than
         9 dBi are used, both the maximum conducted output power and the peak power spectral density should
         be reduced by the amount in decibels that the directional gain of the antenna exceeds 9 dBi.

     (c) The maximum conducted output power is measured as a conducted emission over any interval of
         continuous transmission using instrumentation calibrated in terms of an RMS-equivalent voltage. If the
         device cannot be connected directly, alternative techniques acceptable to the Commission may be used.
         The measurement results shall be properly adjusted for any instrument limitations, such as detector
         response times, limited resolution bandwidth capability when compared to the emission bandwidth,
         sensitivity, etc., so as to obtain a true maximum conducted output power measurement conforming to the
         definitions in this paragraph for the emission in question.

     (d) The peak power spectral density is measured as conducted emission by direct connection of a calibrated
         test instrument to the equipment under test. If the device cannot be connected directly, alternative
         techniques acceptable to the Commission may be used. Measurements are made over a bandwidth of
         one MHz or the 26 dB emission bandwidth of the device, whichever is less. A resolution bandwidth less
         than the measurement bandwidth can be used, provided that the measured power is integrated to show
         total power over the measurement bandwidth. If the resolution bandwidth is approximately equal to the
         measurement bandwidth, and much less than the emission bandwidth of the equipment under test, the
         measured results shall be corrected to account for any difference between the resolution bandwidth of
         the test instrument and its actual noise bandwidth.

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                                                                                                           47 CFR 90.1215(e)
Private Land Mobile Radio Services

     (e) The ratio of the peak excursion of the modulation envelope (measured using a peak hold function) to the
         maximum conducted output power shall not exceed 13 dB across any 1 MHz bandwidth or the emission
         bandwidth whichever is less.

     (f) The transmitting power of permanent fixed point-to-point and point-to-multipoint stations operating in the
         4940–4990 MHz band must not exceed the maximum limits in this paragraph (f). Moreover, applicants
         should request no more power than necessary for a particular use.

           (1) The maximum equivalent isotropically radiated power (EIRP), as referenced to an isotropic radiator,
               must not exceed 55 dBW (85 dBm).

           (2) For path lengths shorter than 17 kilometers, the EIRP shall not exceed the value derived from the
               following equation: New EIRP limit = 55 dBW—40*log(17/B) dBW, where B = the actual path length in
               kilometers.

[70 FR 28467, May 18, 2005, as amended at 74 FR 23803, May 21, 2009; 74 FR 27455, June 10, 2009; 88 FR 12571, Feb. 28, 2023]

§ 90.1217 4.9 GHz Band Manager.
The 4.9 GHz Band Manager will have the following three primary responsibilities:

     (a) Frequency coordination for public safety applications;

     (b) Incentivizing the use of the latest commercially available technologies, including 5G; and

     (c) Facilitating non-public safety use of the 4.9 GHz band.

[88 FR 12572, Feb. 28, 2023]

Subpart Z—Wireless Broadband Services in the 3650–3700 MHz Band

Source: 70 FR 24726, May 11, 2005, unless otherwise noted.

§ 90.1301 Scope.
This subpart sets out the regulations governing wireless operations in the 3650–3700 MHz band. It includes
licensing requirements, and specific operational and technical standards for wireless operations in this band. The
rules in this subpart are to be read in conjunction with the applicable requirements contained elsewhere in the
Commission's rules; however, in case of conflict, the provisions of this subpart shall govern with respect to licensing
and operation in this band.

§ 90.1303 Eligibility.
Any entity, other than those precluded by section 310 of the Communications Act of 1934, as amended, 47 U.S.C.
310, is eligible to hold a license under this part.

47 CFR 90.1303 (enhanced display)                                                                             page 511 of 516
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                                                                                                         47 CFR 90.1305
Private Land Mobile Radio Services

§ 90.1305 Permissible operations.
Use of the 3650–3700 MHz band must be consistent with the allocations for this band as set forth in part 2 of the
Commission's Rules. All stations operating in this band must employ a contention-based protocol (as defined in §
90.7).

§ 90.1307 Licensing.
     (a) The 3650–3700 MHz band is licensed on the basis of non-exclusive nationwide licenses. Non-exclusive
         nationwide licenses will serve as a prerequisite for registering individual fixed and base stations. A
         licensee cannot operate a fixed or base station before registering it under its license and licensees must
         delete registrations for unused fixed and base stations.

     (b) The Commission shall issue no new licenses or license renewals under this section after April 17, 2015,
         except as specified in paragraph (c) of this section.

     (c) If a license issued under this Section expires between April 17, 2015 and April 17, 2020, the licensee may
         request a one-time renewal and the Commission may renew that license for a term ending no later than
         April 17, 2020.

     (d) Licenses that were issued after January 8, 2013 will be afforded protection from harmful interference
         from Citizens Broadband Radio Service users pursuant to § 90.1338 until April 17, 2020 regardless of
         their expiration date.

[80 FR 36222, June 23, 2015]

§ 90.1309 Regulatory status.
Licensees are permitted to provide services on a non-common carrier and/or on a common carrier basis. A licensee
may render any kind of communications service consistent with the regulatory status in its license and with the
Commission's rules applicable to that service.

§ 90.1311 License term.
The license term is ten years, except as set forth in § 90.1307, beginning on the date of the initial authorization
(non-exclusive nationwide license) grant. Registering fixed and base stations will not change the overall renewal
period of the license.

[80 FR 36222, June 23, 2015]

§ 90.1312 Assignment and transfer.
Licensees may assign or transfer their non-exclusive nationwide licenses, and any fixed or base stations registered
under those licenses will remain associated with those licenses.

§ 90.1319 Policies governing the use of the 3650–3700 MHz band.
     (a) Channels in this band are available on a shared basis only and will not be assigned for the exclusive use of
         any licensee.

     (b) Any base, fixed, or mobile station operating in the band must employ a contention-based protocol.

47 CFR 90.1319(b) (enhanced display)                                                                     page 512 of 516
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                                                                                                           47 CFR 90.1319(c)
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     (c) Equipment incorporating an unrestricted contention-based protocol (i.e. one capable of avoiding co-
         frequency interference with devices using all other types of contention-based protocols) may operate
         throughout the 50 megahertz of this frequency band. Equipment incorporating a restricted contention-
         based protocol (i.e. one that does not qualify as unrestricted) may operate in, and shall only tune over, the
         lower 25 megahertz of this frequency band.

     (d) All applicants and licensees shall cooperate in the selection and use of frequencies in the 3650–3700
         MHz band in order to minimize the potential for interference and make the most effective use of the
         authorized facilities. A database identifying the locations of registered stations will be available at
         http://wireless.fcc.gov/uls. Licensees should examine this database before seeking station authorization,
         and make every effort to ensure that their fixed and base stations operate at a location, and with technical
         parameters, that will minimize the potential to cause and receive interference. Licensees of stations
         suffering or causing harmful interference are expected to cooperate and resolve this problem by mutually
         satisfactory arrangements.

[72 FR 40722, July 25, 2007]

§ 90.1321 Power and antenna limits.
     (a) Base and fixed stations are limited to 25 watts/25 MHz equivalent isotropically radiated power (EIRP). In
         any event, the peak EIRP power density shall not exceed 1 Watt in any one-megahertz slice of spectrum.

     (b) In addition to the provisions in paragraph (a) of this section, transmitters operating in the 3650–3700 MHz
         band that emit multiple directional beams, simultaneously or sequentially, for the purpose of directing
         signals to individual receivers or to groups of receivers provided the emissions comply with the following:

           (1) Different information must be transmitted to each receiver.

           (2) If the transmitter employs an antenna system that emits multiple directional beams but does not
               emit multiple directional beams simultaneously, the total output power conducted to the array or
               arrays that comprise the device, i.e., the sum of the power supplied to all antennas, antenna
               elements, staves, etc. and summed across all carriers or frequency channels, shall not exceed the
               limit specified in paragraph (a) of this section, as applicable. The directional antenna gain shall be
               computed as follows:

                 (i)   The directional gain, in dBi, shall be calculated as the sum of 10 log (number of array elements
                       or staves) plus the directional gain, in dBi, of the individual element or stave having the highest
                       gain.

                 (ii) A lower value for the directional gain than that calculated in paragraph (b)(2)(i) of this section
                      will be accepted if sufficient evidence is presented, e.g., due to shading of the array or
                      coherence loss in the beam-forming.

           (3) If a transmitter employs an antenna that operates simultaneously on multiple directional beams
               using the same or different frequency channels and if transmitted beams overlap, the power shall be
               reduced to ensure that the aggregate power from the overlapping beams does not exceed the limit
               specified in paragraph (b)(2) of this section. In addition, the aggregate power transmitted
               simultaneously on all beams shall not exceed the limit specified in paragraph (b)(2) of this section
               by more than 8 dB.

           (4) Transmitters that emit a single directional beam shall operate under the provisions of paragraph
               (b)(2) of this section.

47 CFR 90.1321(b)(4) (enhanced display)                                                                      page 513 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                       47 CFR 90.1321(c)
Private Land Mobile Radio Services

     (c) Mobile and portable stations are limited to 1 watt/25 MHz EIRP. In any event, the peak EIRP density shall
         not exceed 40 milliwatts in any one-megahertz slice of spectrum.

§ 90.1323 Emission limits.
     (a) The power of any emission outside a licensee's frequency band(s) of operation shall be attenuated below
         the transmitter power (P) within the licensed band(s) of operation, measured in watts, by at least 43 + 10
         log (P) dB. Compliance with this provision is based on the use of measurement instrumentation
         employing a resolution bandwidth of 1 MHz or less, but at least one percent of the emission bandwidth of
         the fundamental emission of the transmitter, provided the measured energy is integrated over a 1 MHz
         bandwidth.

     (b) When an emission outside of the authorized bandwidth causes harmful interference, the Commission
         may, at its discretion, require greater attenuation than specified in this section.

§ 90.1331 Restrictions on the operation of base and fixed stations.
     (a)

           (1) Except as provided in paragraph (a)(2) of this section, base and fixed stations may not be located
               within 150 km of any grandfathered satellite earth station operating in the 3650–3700 MHz band.
               The coordinates of these stations are available at http://www.fcc.gov/ib/sd/3650/.

           (2) Base and fixed stations may be located within 150 km of a grandfathered satellite earth station
               provided that the licensee of the satellite earth station and the 3650–3700 MHz licensee mutually
               agree on such operation.

           (3) Any negotiations to enable base or fixed station operations closer than 150 km to grandfathered
               satellite earth stations must be conducted in good faith by all parties.

     (b)

           (1) Except as specified in paragraph (b)(2) of this section, base and fixed stations may not be located
               within 80 km of the following Federal Government radiolocation facilities:

           St. Inigoes, MD—38° 10′ N., 76°, 23′ W

           Pensacola, FL—30° 21′ 28″ N., 87°, 16′ 26″ W

           Pascagoula, MS—30° 22′ N, 88° 29′

           Note to paragraph (b)(1): Licensees installing equipment in the 3650–3700 MHz band should
           determine if there are any nearby Federal Government radar systems that could affect their
           operations. Information regarding the location and operational characteristics of the radar
           systems operating adjacent to this band are provided in NTIA TR–99–361.

           (2) Requests for base or fixed station locations closer than 80 km to the Federal Government
               radiolocation facilities listed in paragraph (b)(1) of this section will only be approved upon
               successful coordination by the Commission with NTIA through the Frequency Assignment
               Subcommittee of the Interdepartmental Radio Advisory Committee.

47 CFR 90.1331(b)(2) (enhanced display)                                                                  page 514 of 516
47 CFR Part 90 (up to date as of 2/20/2024)
                                                                                                        47 CFR 90.1333
Private Land Mobile Radio Services

[70 FR 24726, May 11, 2005, as amended at 77 FR 76248, Dec. 27, 2012; 80 FR 36222, June 23, 2015]

§ 90.1333 Restrictions on the operation of mobile and portable stations.
     (a) Mobile and portable stations may operate only if they can positively receive and decode an enabling signal
         transmitted by a base station.

     (b) Any mobile/portable stations may communicate with any other mobile/portable stations so long as each
         mobile/portable can positively receive and decode an enabling signal transmitted by a base station.

     (c) Airborne operations by mobile/portable stations is prohibited.

§ 90.1335 RF safety.
Licensees in the 3650–3700 MHz band are subject to the exposure requirements found in § 1.1307(b), 2.1091 and
2.1093 of our Rules.

§ 90.1337 Operation near Canadian and Mexican borders.
     (a) Fixed devices generally must be located at least 8 kilometers from the U.S./Canada or U.S./Mexico border
         if the antenna of that device looks within the 160° sector away from the border. Fixed devices must be
         located at least 56 kilometers from each border if the antenna looks within the 200° sector towards the
         border.

     (b) Fixed devices may be located nearer to the U.S./Canada or U.S./Mexico border than specified in paragraph
         (a) of this section only if the Commission is able to coordinate such use with Canada or Mexico, as
         appropriate.

     (c) Licensees must comply with the requirements of current and future agreements with Canada and Mexico
         regarding operation in U.S./Canada and U.S./Mexico border areas.

§ 90.1338 Grandfathered operation and transition to Citizens Broadband Radio Service.
     (a) Fixed and base station registrations filed in ULS on or before April 17, 2015 that are constructed, in
         service, and fully compliant with the rules in part 90, subpart Z as of April 17, 2016 will be afforded
         protection from harmful interference caused by Citizens Broadband Radio Service users until the end of
         their license term (with one exception that fixed and base stations registered under licenses issued after
         January 8, 2013 will only be afforded protection until April 17, 2020), consistent with § 90.1307.
         Protection criteria for such registered base stations are described in § 96.21of this chapter. Registrations
         originally filed after April 17, 2015 will only be afforded protection from harmful interference under this
         section within the licensee's Grandfathered Wireless Protection Zone, as defined in §§ 96.3 and 96.21 of
         this chapter.

     (b) Existing licensees as of April 17, 2015 may add new mobile or portable stations (as defined in § 90.1333)
         and/or add new subscriber units that operate above the power limit defined in § 90.1333, only if they can
         positively receive and decode an enabling signal from a base station. Such units will be afforded
         protection within the licensee's Grandfathered Wireless Protection Zone (as defined in §§ 96.3 and 96.21
         of this chapter) until April 17, 2020 or until the end of their license term, whichever is later (with one
         exception that mobile and portable stations associated with licenses issued after January 8, 2013 will
         only be afforded protection until April 17, 2020).

[80 FR 36222, June 23, 2015]

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47 CFR Part 90 (up to date as of 2/20/2024)
                                              47 CFR 90.1338(b)
Private Land Mobile Radio Services

47 CFR 90.1338(b) (enhanced display)            page 516 of 516