FCC Regulation Document

Part: 
Topic: C

47 CFR Part 22 (up to date as of 2/20/2024)
                                                                            47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

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

Title 47 —Telecommunication
Chapter I —Federal Communications Commission
Subchapter B —Common Carrier Services

Part 22 Public Mobile Services
  Subpart A Scope and Authority
      § 22.1 Basis and purpose.
      § 22.3 [Reserved]
      § 22.5 Citizenship.
      § 22.7 General eligibility.
      § 22.9 Operation of certificated signal boosters.
      § 22.99 Definitions.
  Subpart B Licensing Requirements and Procedures
      Applications and Notifications
         § 22.107 General application requirements.
         § 22.131 Procedures for mutually exclusive applications.
         § 22.143 Construction prior to grant of application.
         § 22.150 Standard pre-filing technical coordination procedure.
         § 22.165 Additional transmitters for existing systems.
         § 22.169 International coordination.
      Competitive Bidding Procedures
         § 22.201 Paging geographic area authorizations are subject to competitive bidding.
         §§ 22.203-22.211 [Reserved]
         § 22.213 Filing of long-form applications.
         § 22.215 [Reserved]
         § 22.217 Bidding credit for small businesses.
         § 22.221 Eligibility for partitioned licenses.
         § 22.223 Designated entities.
         § 22.225 Certifications, disclosures, records maintenance, and definitions.
         § 22.227 Petitions to deny and limitations on settlements.
         § 22.229 Designated entities.
  Subpart C Operational and Technical Requirements
      Operational Requirements
         § 22.301 [Reserved]
         § 22.303 [Reserved]
         § 22.305 Operator and maintenance requirements.
         § 22.307 Operation during emergency.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                         47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

        § 22.313 Station identification.
        § 22.321 [Reserved]
        § 22.325 [Reserved]
     Technical Requirements
        § 22.351 Channel assignment policy.
        § 22.352 Protection from interference.
        § 22.353 Blanketing interference.
        § 22.355 Frequency tolerance.
        § 22.357 Emission types.
        § 22.359 Emission limitations.
        § 22.365 Antenna structures; air navigation safety.
        § 22.377 Certification of transmitters.
        § 22.379 RF exposure.
        § 22.383 In-building radiation systems.
   Subpart D [Reserved]
   Subpart E Paging and Radiotelephone Service
     § 22.501 Scope.
     § 22.503 Paging geographic area authorizations.
     § 22.507 Number of transmitters per station.
     § 22.509 Procedures for mutually exclusive applications in the Paging and Radiotelephone
                  Service.
     § 22.511     Construction period for the Paging and Radiotelephone Service.
     § 22.513 Partitioning and disaggregation.
     § 22.515     Permissible communications paths.
     § 22.527 Signal boosters.
     § 22.529 Application requirements for the Paging and Radiotelephone Service.
     Paging Operation
        § 22.531 Channels for paging operation.
        § 22.535 Effective radiated power limits.
        § 22.537 Technical channel assignment criteria.
        § 22.559 Paging application requirements.
     One-way or Two-way Mobile Operation
        § 22.561 Channels for one-way or two-way mobile operation.
        § 22.565 Transmitting power limits.
        § 22.567 Technical channel assignment criteria.
        § 22.571 Responsibility for mobile stations.
        § 22.573 Use of base transmitters as repeaters.
        § 22.575 Use of mobile channel for remote control of station functions.
        § 22.579 Operation of mobile transmitters across U.S.-Canada border.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                            47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

        § 22.589 One-way or two-way application requirements.
     Point-to-Point Operation
        § 22.591 Channels for point-to-point operation.
        § 22.593 Effective radiated power limits.
        § 22.601 Existing microwave stations licensed under this part.
        § 22.602 Transition of the 2110–2130 and 2160–2180 MHz channels to emerging
                  technologies.
        § 22.603 488–494 MHz fixed service in Hawaii.
     Point-to-Multipoint Operation
        § 22.621 Channels for point-to-multipoint operation.
        § 22.623 System configuration.
        § 22.625 Transmitter locations.
        § 22.627 Effective radiated power limits.
     470–512 MHz Trunked Mobile Operation
        § 22.651 470–512 MHz channels for trunked mobile operation.
        § 22.653 Eligibility.
        § 22.657 Transmitter locations.
        § 22.659 Effective radiated power limits.
   Subpart F Rural Radiotelephone Service
     § 22.701         Scope.
     § 22.702         Eligibility.
     § 22.703         Separate rural subscriber station authorization not required.
     § 22.705         Rural radiotelephone system configuration.
     § 22.709         Rural radiotelephone service application requirements.
     § 22.711         Provision of information to applicants.
     § 22.713         Construction period for rural radiotelephone stations.
     § 22.715         Technical channel assignment criteria for rural radiotelephone stations.
     § 22.717         Procedure for mutually exclusive applications in the Rural Radiotelephone
                      Service.
     § 22.719         Additional channel policy for rural radiotelephone stations.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                           47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

     Conventional Rural Radiotelephone Stations
        § 22.721 Geographic area authorizations.
        § 22.723 Secondary site-by-site authorizations.
        § 22.725 Channels for conventional rural radiotelephone stations and basic exchange
                 telephone radio systems.
        § 22.727 Power limits for conventional rural radiotelephone transmitters.
        § 22.731 Emission limitations.
        § 22.733 Priority of service.
        § 22.737 Temporary fixed stations.
     Basic Exchange Telephone Radio Systems
        § 22.757 Channels for basic exchange telephone radio systems.
        § 22.759 Power limit for BETRS.
   Subpart G Air-Ground Radiotelephone Service
     § 22.801               Scope.
     General Aviation Air-Ground Stations
        § 22.805 Channels for general aviation air-ground service.
        § 22.807 General aviation air-ground application requirements.
        § 22.809 Transmitting power limits.
        § 22.813 Technical channel pair assignment criteria.
        § 22.815 Construction period for general aviation ground stations.
        § 22.817 Additional channel policies.
     Commercial Aviation Air-Ground Systems
        § 22.853 Eligibility to hold interest in licenses limited to 3 MHz of spectrum.
        § 22.857 Channel plan for commercial aviation air-ground systems.
        § 22.859 Incumbent commercial aviation air-ground systems.
        § 22.861 Emission limitations.
        § 22.863 Frequency stability.
        § 22.867 Effective radiated power limits.
        § 22.873 Construction requirements for commercial aviation air-ground systems.
        § 22.877 Unacceptable interference to part 90 non-cellular 800 MHz licensees from
                  commercial aviation air-ground systems.
        § 22.878 Obligation to abate unacceptable interference.
        § 22.879 Interference resolution procedures.
        § 22.880 Information exchange.
        § 22.881 Air-Ground Radiotelephone Service subject to competitive bidding.
        § 22.882 Designated entities.
   Subpart H Cellular Radiotelephone Service
     § 22.900 Scope.
     § 22.901 Cellular service requirements and limitations.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                           47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

     § 22.905 Channels for cellular service.
     § 22.907 Coordination of channel usage.
     § 22.909 Cellular markets.
     § 22.911 Cellular geographic service area.
     § 22.912 Service area boundary extensions.
     § 22.913 Effective radiated power limits.
     § 22.917 Emission limitations for cellular equipment.
     § 22.921 [Reserved]
     § 22.923 Cellular system configuration.
     § 22.925 Prohibition on airborne operation of cellular telephones.
     §§ 22.927-22.943 [Reserved]
     § 22.946 Construction period for Unserved Area authorizations.
     § 22.948 Geographic partitioning and spectrum disaggregation; spectrum leasing.
     § 22.949 Unserved Area licensing; minimum coverage requirements.
     § 22.950 Provision of service in the Gulf of Mexico Service Area (GMSA).
     § 22.951 [Reserved]
     § 22.953 Content and form of applications for Cellular Unserved Area authorizations.
     §§ 22.955-22.957 [Reserved]
     § 22.959 Rules governing processing of applications for initial systems.
     § 22.960 Cellular operations in the Chambers, TX CMA (CMA672–A).
     § 22.961 Cellular licenses subject to competitive bidding.
     §§ 22.962-22.969 [Reserved]
     § 22.970 Unacceptable interference to part 90 non-cellular 800 MHz licensees from cellular
                radiotelephone or part 90–800 MHz cellular systems.
     § 22.971 Obligation to abate unacceptable interference.
     § 22.972 Interference resolution procedures.
     § 22.973 Information exchange.
     § 22.983 Field strength limit.
   Subpart I Offshore Radiotelephone Service
     § 22.1001 Scope.
     § 22.1003 Eligibility.
     § 22.1005 Priority of service.
     § 22.1007 Channels for offshore radiotelephone systems.
     § 22.1009 Transmitter locations.
     § 22.1011 Antenna height limitations.
     § 22.1013 Effective radiated power limitations.
     § 22.1015 Repeater operation.
     § 22.1025 Permissible communications.
     § 22.1031 Temporary fixed stations.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                            47 CFR Part 22 (Feb. 20, 2024)
Public Mobile Services

       § 22.1035 Construction period.
       § 22.1037 Application requirements for offshore stations.

PART 22—PUBLIC MOBILE SERVICES
Authority: 47 U.S.C. 154, 222, 303, 309, and 332.

Source: 59 FR 59507, Nov. 17, 1994, unless otherwise noted.

Subpart A—Scope and Authority
§ 22.1 Basis and purpose.
This section contains a concise general statement of the basis and purpose of the rules in this part, pursuant to 5
U.S.C. 553(c).

     (a) Basis. These rules are issued pursuant to the Communications Act of 1934, as amended, 47 U.S.C. 151 et.
         seq.

     (b) Purpose. The purpose of these rules is to establish the requirements and conditions under which radio
         stations may be licensed and used in the Public Mobile Services.

[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19307, Apr. 13, 2005]

§ 22.3 [Reserved]
§ 22.5 Citizenship.
The rules in this section implement section 310 of the Communications Act of 1934, as amended (47 U.S.C. § 310),
in regard to the citizenship of licensees in the Public Mobile Services.

     (a) Foreign governments. The FCC will not grant an authorization in the Public Mobile Services to any foreign
         government or any representative thereof.

     (b) Alien ownership or control. The FCC will not grant an authorization in the Public Mobile Services to:

           (1) Any alien or the representative of any alien;

           (2) Any corporation organized under the laws of any foreign government;

           (3) Any 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) Any 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 FCC finds that the public interest will be served by the refusal or revocation of such
               license.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                   47 CFR 22.7
Public Mobile Services

[59 FR 59507, Nov. 17, 1994, as amended at 61 FR 55580, Oct. 28, 1996]

§ 22.7 General 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. Applications are granted only if the applicant is legally, financially,
technically and otherwise qualified to render the proposed service.

[70 FR 19307, Apr. 13, 2005]

§ 22.9 Operation of certificated signal boosters.
Individuals and non-individuals may operate certificated Consumer Signal Boosters on frequencies regulated under
this part provided that such operation complies with all applicable rules under this part and § 20.21 of this chapter.
Failure to comply with all applicable rules voids the authority to operate a signal booster.

[78 FR 21563, Apr. 11, 2013]

§ 22.99 Definitions.
Terms used in this part have the following meanings:

    Air-Ground Radiotelephone Service. A radio service in which licensees are authorized to offer and provide radio
           telecommunications service for hire to subscribers in aircraft.

    Airborne station. A mobile station in the Air-Ground Radiotelephone Service authorized for use on aircraft while
          in flight or on the ground.

    Antenna structure. A structure comprising an antenna, the tower or other structure that exists solely to support
         antennas, and any surmounting appurtenances (attachments such as beacons or lightning rods).

    Antenna. A device that converts radio frequency electrical energy to radiated electromagnetic energy and vice
         versa; in a transmitting station, the device from which radio waves are emitted.

    Authorized bandwidth. The necessary or occupied bandwidth of an emission, whichever is more.

    Authorized spectrum. The spectral width of that portion of the electromagnetic spectrum within which the
          emission power of the authorized transmitter(s) must be contained, in accordance with the rules in this
          part. The authorized spectrum comprises one channel bandwidth or the bandwidths of two or more
          contiguous channels.

    Auxiliary test transmitter. A fixed transmitter used to test Public Mobile systems.

    Base transmitter. A stationary transmitter that provides radio telecommunications service to mobile and/or fixed
          receivers, including those associated with mobile stations.

    Blanketing interference. Disturbance in consumer receivers located in the immediate vicinity of a transmitter,
          caused by currents directly induced into the consumer receiver's circuitry by the relatively high field
          strength of the transmitter.

    Cardinal radials. Eight imaginary straight lines extending radially on the ground from an antenna location in the
          following azimuths with respect to true North: 0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                         47 CFR 22.99 “Carrier frequency”
Public Mobile Services

    Carrier frequency. The frequency of the unmodulated electrical wave at the output of an amplitude modulated
           (AM), frequency modulated (FM) or phase modulated (PM) transmitter.

    Cell. The service area of an individual transmitter location in a cellular system.

    Cellular Geographic Service Area (CGSA). The licensed geographic area within which a Cellular system is entitled
           to protection and adverse effects are recognized, for the purpose of determining whether a petitioner has
           standing, in the Cellular Radiotelephone Service, and within which the Cellular licensee is permitted to
           transmit, or consent to allow other Cellular licensees to transmit, electromagnetic energy and signals on
           the assigned channel block, in order to provide Cellular service. See § 22.911.

    Cellular Market Area (CMA). A standard geographic area used by the FCC for administrative convenience in the
           licensing of Cellular systems; a more recent term for “Cellular market” (and includes Metropolitan
           Statistical Areas (MSAs) and Rural Service Areas (RSAs)). See § 22.909.

    Cellular markets. This term is obsolescent. See definition for “Cellular Market Area (CMA).”

    Cellular Radiotelephone Service. A radio service in which licensees are authorized to offer and provide cellular
           service for hire to the general public. This service was formerly titled Domestic Public Cellular Radio
           Telecommunications Service.

    Cellular repeater. In the Cellular Radiotelephone Service, a stationary transmitter or device that automatically re-
           radiates the transmissions of base transmitters at a particular cell site and mobile stations
           communicating with those base transmitters, with or without channel translation.

    Cellular service. Radio telecommunication services provided using a cellular system.

    Cellular system. An automated high-capacity system of one or more multi-channel base stations designed to
           provide radio telecommunication services to mobile stations over a wide area in a spectrally efficient
           manner. Cellular systems employ techniques such as automatic hand-off between base stations of
           communications in progress to enable channels to be re-used at relatively short distances.

    Center frequency. The frequency of the middle of the bandwidth of a channel.

    Central office transmitter. A fixed transmitter in the Rural Radiotelephone Service that provides service to rural
          subscriber stations.

    CGSA. See Cellular Geographic Service Area.

    Channel. The portion of the electromagnetic spectrum assigned by the FCC for one emission. In certain
         circumstances, however, more than one emission may be transmitted on a channel.

    Channel bandwidth. The spectral width of a channel, as specified in this part, within which 99% of the emission
         power must be contained.

    Channel block. A group of channels that are assigned together, not individually.

    Channel pair. Two channels that are assigned together, not individually. In this part, channel pairs are indicated
         by an ellipsis between the center frequencies.

    Communications channel. In the Cellular Radiotelephone and Air-Ground Radiotelephone Services, a channel
        used to carry subscriber communications.

    Construction period. The period between the date of grant of an authorization and the date of required
          commencement of service.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                          47 CFR 22.99 “Control channel”
Public Mobile Services

    Control channel. In the Cellular Radiotelephone Service and the Air-Ground Radiotelephone Service, a channel
          used to transmit information necessary to establish or maintain communications. In the other Public
          Mobile Services, a channel that may be assigned to a control transmitter.

    Control point. A location where the operation of a public mobile station is supervised and controlled by the
          licensee of that station.

    Control transmitter. A fixed transmitter in the Public Mobile Services that transmits control signals to one or
          more base or fixed stations for the purpose of controlling the operation of the base or fixed stations, and/
          or transmits subscriber communications to one or more base or fixed stations that retransmit them to
          subscribers.

    Dead spots. Small areas within a service area where the field strength is lower than the minimum level for
          reliable service. Service within dead spots is presumed.

    Dispatch service. A radiotelephone service comprising communications between a dispatcher and one or more
          mobile units. These communications normally do not exceed one minute in duration and are transmitted
          directly through a base station, without passing through mobile telephone switching facilities.

    Effective radiated power (ERP). The effective radiated power of a transmitter (with antenna, transmission line,
           duplexers etc.) is the power that would be necessary at the input terminals of a reference half-wave dipole
           antenna in order to produce the same maximum field intensity. ERP is usually calculated by multiplying
           the measured transmitter output power by the specified antenna system gain, relative to a half-wave
           dipole, in the direction of interest.

    Emission. The electromagnetic energy radiated from an antenna.

    Emission designator. An internationally accepted symbol for describing an emission in terms of its bandwidth
          and the characteristics of its modulation, if any. See § 2.201 of this chapter for details.

    Emission mask. The design limits imposed, as a condition or certification, on the mean power of emissions as a
          function of frequency both within the authorized bandwidth and in the adjacent spectrum.

    Equivalent isotropically radiated power (EIRP). The equivalent isotropically radiated power of a transmitter (with
          antenna, transmission line, duplexers etc.) is the power that would be necessary at the input terminals of
          a reference isotropic radiator in order to produce the same maximum field intensity. An isotropic radiator
          is a theoretical lossless point source of radiation with unity gain in all directions. EIRP is usually
          calculated by multiplying the measured transmitter output power by the specified antenna system gain,
          relative to an isotropic radiator, in the direction of interest.

    Extension. In the Cellular Radiotelephone Service, an area within the service area boundary (calculated using the
          methodology of § 22.911) of a Cellular system but outside the licensed Cellular Geographic Service Area
          boundary. See §§ 22.911 and 22.912.

    Facsimile service. Transmission of still images from one place to another by means of radio.

    Fill-in transmitters. Transmitters added to a station, in the same area and transmitting on the same channel or
             channel block as previously authorized transmitters, that do not expand the existing service area, but are
             established for the purpose of improving reception in dead spots.

    Fixed transmitter. A stationary transmitter that communicates with other stationary transmitters.

    Frequency. The number of cycles occurring per second of an electrical or electromagnetic wave; a number
          representing a specific point in the electromagnetic spectrum.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                           47 CFR 22.99 “Ground station”
Public Mobile Services

    Ground station. In the Air-Ground Radiotelephone Service, a stationary transmitter that provides service to
         airborne mobile stations.

    Gulf of Mexico Service Area (GMSA). The cellular market comprising the water area of the Gulf of Mexico
           bounded on the West, North and East by the coastline. Coastline, for this purpose, means the line of
           ordinary low water along that portion of the coast which is in direct contact with the open sea, and the line
           marking the seaward limit of inland waters. Inland waters include bays, historic inland waters and waters
           circumscribed by a fringe of islands within the immediate vicinity of the shoreline.

    Height above average terrain (HAAT). The height of an antenna above the average elevation of the surrounding
          area.

    In-building radiation systems. Supplementary systems comprising low power transmitters, receivers, indoor
           antennas and/or leaky coaxial cable radiators, designed to improve service reliability inside buildings or
           structures located within the service areas of stations in the Public Mobile Services.

    Initial cellular applications. Applications for authority to construct and operate a new cellular system, excluding
            applications for interim operating authority.

    Interfering contour. The locus of points surrounding a transmitter where the predicted median field strength of
           the signal from that transmitter is the maximum field strength that is not considered to cause interference
           at the service contour of another transmitter.

    Interoffice transmitter. A fixed transmitter in the Rural Radiotelephone Service that communicates with other
           interoffice transmitters for the purpose of interconnecting rural central offices.

    Mobile station. One or more transmitters that are capable of operation while in motion.

    Necessary bandwidth. The calculated spectral width of an emission. Calculations are made using procedures
         set forth in part 2 of this chapter. The bandwidth so calculated is considered to be the minimum
         necessary to convey information at the desired rate with the desired accuracy.

    Occupied bandwidth. The measured spectral width of an emission. The measurement determines occupied
         bandwidth as the difference between upper and lower frequencies where 0.5% of the emission power is
         above the upper frequency and 0.5% of the emission power is below the lower frequency.

    Offshore central transmitter. A fixed transmitter in the Offshore Radiotelephone Service that provides service to
          offshore subscriber stations.

    Offshore Radiotelephone Service. A radio service in which licensees are authorized to offer and provide radio
          telecommunication services for hire to subscribers on structures in the offshore coastal waters of the
          Gulf of Mexico.

    Offshore subscriber station. One or more fixed and/or mobile transmitters in the Offshore Radiotelephone
          Service that receive service from offshore central transmitters.

    Pager. A small radio receiver designed to be carried by a person and to give an aural, visual or tactile indication
          when activated by the reception of a radio signal containing its specific code. It may also reproduce
          sounds and/or display messages that were also transmitted. Some pagers also transmit a radio signal
          acknowledging that a message has been received.

    Paging geographic area authorization. An authorization conveying the exclusive right to establish and expand
          one or more stations throughout a paging geographic area or, in the case of a partitioned geographic area,
          throughout a specified portion of a paging geographic area, on a specified channel allocated for

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                    47 CFR 22.99 “Paging geographic areas”
Public Mobile Services

           assignment in the Paging and Radiotelephone Service. These are subject to the conditions that no
           interference may be caused to existing co-channel stations operated by other licensees within the paging
           geographic area and that no interference may be caused to existing or proposed co-channel stations of
           other licensees in adjoining paging geographic areas.

    Paging geographic areas. Standard geographic areas used by the FCC for administrative convenience in the
          licensing of stations to operate on channels allocated for assignment in the Paging and Radiotelephone
          Service. See § 22.503(b).

    Paging and Radiotelephone Service. A radio service in which common carriers are authorized to offer and
          provide paging and radiotelephone service for hire to the general public. This service was formerly titled
          Public Land Mobile Service.

    Paging service. Transmission of coded radio signals for the purpose of activating specific pagers; such
          transmissions may include messages and/or sounds.

    Power spectral density (PSD). The power of an emission in the frequency domain, such as in terms of ERP or
         EIRP, stated per unit bandwidth, e.g., watts/MHz.

    Public Mobile Services. Radio services in which licensees are authorized to offer and provide mobile and related
          fixed radio telecommunication services for hire to the public.

    Radio telecommunication services. Communication services provided by the use of radio, including
          radiotelephone, radiotelegraph, paging and facsimile service.

    Radiotelegraph service. Transmission of messages from one place to another by means of radio.

    Radiotelephone service. Transmission of sound from one place to another by means of radio.

    Repeater. A fixed transmitter that retransmits the signals of other stations.

    Roamer. A mobile station receiving service from a station or system in the Public Mobile Services other than one
        to which it is a subscriber.

    Rural Radiotelephone Service. A radio service in which licensees are authorized to offer and provide radio
           telecommunication services for hire to subscribers in areas where it is not feasible to provide
           communication services by wire or other means.

    Rural subscriber station. One or more fixed transmitters in the Rural Radiotelephone Service that receive service
           from central office transmitters.

    Service area. The geographic area considered by the FCC to be reliably served by a station in the Public Mobile
          Services.

    Service contour. The locus of points surrounding a transmitter where the predicted median field strength of the
          signal from that transmitter is the minimum field strength that is considered sufficient to provide reliable
          service to mobile stations.

    Service to subscribers. Service to at least one subscriber that is not affiliated with, controlled by or related to the
          providing carrier.

    Signal booster. A stationary device that automatically reradiates signals from base transmitters without channel
          translation, for the purpose of improving the reliability of existing service by increasing the signal strength
          in dead spots.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.99 “Station”
Public Mobile Services

    Station. A station equipped to engage in radio communication or radio transmission of energy (47 U.S.C.
          153(k)).

    Telecommunications common carrier. An individual, partnership, association, joint-stock company, trust or
          corporation engaged in rendering radio telecommunications services to the general public for hire.

    Temporary fixed station. One or more fixed transmitters that normally do not remain at any particular location for
         longer than 6 months.

    Universal licensing system. The Universal Licensing System (ULS) is the consolidated database, application
          filing system, and processing system for all Wireless Radio Services. ULS supports electronic filing of all
          applications and related documents by applicants and licensees in the Wireless Radio Services, and
          provides public access to licensing information.

    Unserved Area. With regard to a channel block allocated for assignment in the Cellular Radiotelephone Service:
          Geographic area in the District of Columbia, or any State, Territory or Possession of the United States of
          America that is not within any Cellular Geographic Service Area of any Cellular system authorized to
          transmit on that channel block. With regard to a channel allocated for assignment in the Paging and
          Radiotelephone service: Geographic area within the District of Columbia, or any State, Territory or
          possession of the United States of America that is not within the service contour of any base transmitter
          in any station authorized to transmit on that channel.

[59 FR 59507, Nov. 17, 1994, as amended at 61 FR 31050, June 19, 1996; 61 FR 54098, Oct. 17, 1996; 62 FR 11628, Mar. 12, 1997;
63 FR 36603, July 7, 1998; 63 FR 68943, Dec. 14, 1998; 67 FR 9609, Mar. 4, 2002; 70 FR 19307, Apr. 13, 2005; 79 FR 72150, Dec. 5,
2014; 82 FR 17581, Apr. 12, 2017]

Subpart B—Licensing Requirements and Procedures

                                              APPLICATIONS AND NOTIFICATIONS

§ 22.107 General application requirements.
In general, applications for authorizations, assignments of authorizations, or consent to transfer of control of
licensees in the Public Mobile Services must:

     (a) Demonstrate the applicant's qualifications to hold an authorization in the Public Mobile services;

     (b) State how a grant would serve the public interest, convenience, and necessity;

     (c) Contain all information required by FCC rules or application forms;

     (d) Propose operation of a facility in compliance with all rules governing the Public Mobile service;

     (e) Be amended as necessary to remain substantially accurate and complete in all significant respects, in
         accordance with the provisions of § 1.65 of this chapter; and,

     (f) Be signed in accordance with § 1.743 of this chapter.

47 CFR 22.107(f) (enhanced display)                                                                                page 12 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                            47 CFR 22.131
Public Mobile Services

§ 22.131 Procedures for mutually exclusive applications.
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 Public Mobile Services involved. The
Commission uses the general procedures in this section for processing mutually exclusive applications in the Public
Mobile Services. Additional specific procedures are prescribed in the subparts of this part governing the individual
Public Mobile Services (see §§ 22.509, 22.717, and 22.949) and in part 1 of this chapter.

     (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 § 1.945 of this chapter) any mutually exclusive application(s) whose filing date is
         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 application(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 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 that are excluded by that grant, pursuant to §
         1.945 of this chapter.

           (1) Selection methods. In selecting the application to grant, the Commission will use competitive
               bidding.

           (2) Dismissal of applications. The Commission may dismiss any application in a filing group that is
               defective or otherwise subject to dismissal under § 1.945 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
               the processing of two or more mutually exclusive applications depends upon 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.

47 CFR 22.131(c)(3)(i) (enhanced display)                                                                   page 13 of 117
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                                                                                                        47 CFR 22.131(c)(3)(ii)
Public Mobile Services

                 (ii) If all of the mutually exclusive applications filed on the earliest filing date are applications for
                      initial authorization, a 30-day notice and cut-off 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 FCC administers competitive bidding procedures
                           in accordance with §§ 22.201 through 22.227 and subpart Q of part 1 of this chapter, as
                           applicable. After such procedures, the application of the successful bidder may be granted
                           and the other applications may be dismissed without prejudice.

                       (B) If any of the mutually exclusive applications in a 30-day notice and cut-off filing group is an
                           application for modification, 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 FCC 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 of 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;

47 CFR 22.131(d)(2)(i) (enhanced display)                                                                       page 14 of 117
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                                                                                                         47 CFR 22.131(d)(2)(ii)
Public Mobile Services

                 (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;

                (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; or

                (iv) Any application to expand the Cellular Geographic Service Area of an existing Cellular system.
                     See § 22.911.

                 (v) Any “short-form” application (filed on FCC Form 175) requesting a new paging geographic area
                     authorization.

[59 FR 59954, Nov. 21, 1994, as amended at 62 FR 11629, Mar. 12, 1997; 63 FR 68943, Dec. 14, 1998; 79 FR 72150, Dec. 5, 2014;
82 FR 41547, Sept. 1, 2017]

§ 22.143 Construction prior to grant of application.
Applicants may construct facilities in the Public Mobile services prior to grant of their applications, subject to the
provisions of this section, but must not operate such facilities until the FCC grants an authorization. If the
conditions stated in this section are not met, applicants must not begin to construct facilities in the Public Mobile
Services.

     (a) When applicants may begin construction. An applicant may begin construction of a facility 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 FCC 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 FCC 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, except for successful bidders
               and tentative selectees in the Cellular Radiotelephone Service;

           (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 FCC rules;

47 CFR 22.143(d)(3) (enhanced display)                                                                           page 15 of 117
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                                                                                                            47 CFR 22.143(d)(4)
Public Mobile Services

           (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), secured a valid FAA determination of “no hazard,” and received antenna height
               clearance and obstruction marking and lighting specifications (FCC Form 854R) from the FCC for the
               proposed construction or alteration.

           (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.

[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19308, Apr. 13, 2005; 77 FR 3954, Jan. 26, 2012; 79 FR 72151, Dec. 5, 2014]

§ 22.150 Standard pre-filing technical coordination procedure.
For operations on certain channels in the Public Mobile Services, carriers must attempt to coordinate the proposed
use of spectrum with other spectrum users prior to filing an application for authority to operate a station. Rules
requiring this procedure for specific channels and types of stations are contained in the subparts governing the
individual Public Mobile Services.

     (a) Coordination comprises two steps—notification and response. Each step may be accomplished orally or in
         writing.

     (b) Notification must include relevant technical details of the proposal. At minimum, this should include the
         following:

           (1) Geographical coordinates of the antenna site(s).

           (2) Transmitting and receiving channels to be added or changed.

           (3) Transmitting power, emission type and polarization.

           (4) Transmitting antenna pattern and maximum gain.

           (5) Transmitting antenna height above ground level.

     (c) Applicants and licensees receiving notification must respond promptly, even if no channel usage conflicts
         are anticipated. If any notified party fails to respond within 30 days, the applicant may file the application
         without a response from that party.

     (d) The 30-day period begins on the date the notification is submitted to the Commission via the ULS. If the
         notification is by mail, this date may be ascertained by:

           (1) The return receipt on certified mail,

           (2) The enclosure of a card to be dated and returned by the party being notified, or

           (3) A reasonable estimate of the time required for the mail to reach its destination. In this case, the date
               when the 30-day period will expire must be stated in the notification.

     (e) All channel usage conflicts discovered during the coordination process should be resolved prior to filing of
         the application. If the applicant is unable or unwilling to resolve a particular conflict, the application may
         be accepted for filing if it contains a statement describing the unresolved conflict and a brief explanation
         of the reasons why a resolution was not achieved.
47 CFR 22.150(e) (enhanced display)                                                                              page 16 of 117
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                                                                                                        47 CFR 22.150(f)
Public Mobile Services

     (f) If a number of changes in the technical parameters of a proposed facility become necessary during the
         course of the coordination process, an attempt should be made to minimize the number of separate
         notifications. If the changes are incorporated into a completely revised notice, the items that were
         changed from the previous notice should be identified.

     (g) In situations where subsequent changes are not numerous or complex, the party receiving the changed
         notification should make an effort to respond in less than 30 days. If the applicant believes a shorter
         response time is reasonable and appropriate, it should so indicate in the notice and suggest a response
         date.

     (h) If a subsequent change in the technical parameters of a proposed facility could not affect the facilities of
         one or more of the parties that received an initial notification, the applicant is not required to coordinate
         that change with these parties. However, these parties must be advised of the change and of the opinion
         that coordination is not required.

[59 FR 59507, Nov. 17, 1994, as amended at 63 FR 68944, Dec. 14, 1998]

§ 22.165 Additional transmitters for existing systems.
A licensee may operate additional transmitters at additional locations on the same channel or channel block as its
existing system without obtaining prior Commission approval provided:

     (a) International coordination. The locations and/or technical parameters of the additional transmitters are
         such that individual coordination of the channel assignment(s) with a foreign administration, under
         applicable international agreements and rules in this part, is not required.

     (b) Antenna structure registration. Certain antenna structures must be registered with the Commission prior
         to construction or alteration. Registration requirements are contained in part 17 of this chapter.

     (c) Environmental. The additional transmitters must not have a significant environmental effect as defined by
         §§ 1.1301 through 1.1319 of this chapter.

     (d) Paging and Radiotelephone Service. The provisions in this paragraph apply for stations in the Paging and
         Radiotelephone Service.

           (1) The interfering contours of the additional transmitter(s) must be totally encompassed by the
               composite interfering contour of the existing station (or stations under common control of the
               applicant) on the same channel, except that this limitation does not apply to nationwide network
               paging stations or in-building radiation systems.

           (2) [Reserved]

           (3) The additional transmitters must not operate on control channels in the 72–76 MHz, 470–512 MHz,
               928 MHz, 932 MHz, 941 MHz or 959 MHz frequency ranges.

     (e) Cellular Radiotelephone Service. The service area boundaries (SABs) of the additional transmitters, as
         calculated by the method set forth in § 22.911(a), must not cause an expansion of the Cellular
         Geographic Service Area (CGSA), and must not extend outside the CGSA boundary into Unserved Area
         unless such extension is less than 130 contiguous square kilometers (50 contiguous square miles). The
         licensee must seek prior approval (using FCC Form 601) regarding any transmitters to be added under
         this section that would cause an expansion of the CGSA, or an SAB extension of 130 contiguous square
         kilometers (50 contiguous square miles) or more, into Unserved Area. See §§ 22.912, 22.953.

47 CFR 22.165(e) (enhanced display)                                                                       page 17 of 117
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                                                                                                              47 CFR 22.165(f)
Public Mobile Services

     (f) Air-ground Radiotelephone Service. Ground stations may be added to Commercial Aviation air-ground
         systems at previously established ground station locations, pursuant to § 22.859, subject to compliance
         with the applicable technical rules. This section does not apply to General Aviation air-ground stations.

     (g) Rural Radiotelephone Service. A “service area” and “interfering contours” must be determined using the
         same method as for stations in the Paging and Radiotelephone Service. The service area and interfering
         contours so determined for the additional transmitter(s) must be totally encompassed by the similarly
         determined composite service area contour and predicted interfering contour, respectively, of the existing
         station on the same channel. This section does not apply to Basic Exchange Telecommunications Radio
         Systems.

     (h) Offshore Radiotelephone Service. This section does not apply to stations in the Offshore Radiotelephone
         Service.

      (i)   Provision of information upon request. Upon request by the FCC, licensees must supply administrative or
            technical information concerning the additional transmitters. At the time transmitters are added pursuant
            to this section, licensees must make a record of the pertinent technical and administrative information so
            that such information is readily available. See § 22.303.

[59 FR 59507, Nov. 17, 1994; 59 FR 64856, Dec. 16, 1994, as amended at 62 FR 11629, Mar. 12, 1997; 63 FR 68944, Dec. 14, 1998;
64 FR 53240, Oct. 1, 1999; 67 FR 77190, Dec. 17, 2002; 78 FR 25174, Apr. 29, 2013; 79 FR 72151, Dec. 5, 2014]

§ 22.169 International coordination.
Operation of systems and channel assignments under this part are subject to the applicable provisions and
requirements of treaties and other international agreements between the United States government and the
governments of Canada and Mexico.

[82 FR 17582, Apr. 12, 2017]

                                          COMPETITIVE BIDDING PROCEDURES

Source: 62 FR 11629, Mar. 12, 1997, unless otherwise noted.

§ 22.201 Paging geographic area authorizations are subject to competitive bidding.
Mutually exclusive initial applications for paging 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 and part 90 of this chapter.

[67 FR 45366, July 9, 2002]

§§ 22.203-22.211 [Reserved]
§ 22.213 Filing of long-form applications.
After an auction, the Commission will not accept long form applications for paging geographic authorizations from
anyone other than the auction winners and parties seeking partitioned authorizations pursuant to agreements with
auction winners under § 22.221.

47 CFR 22.213 (enhanced display)                                                                                 page 18 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.215
Public Mobile Services

[67 FR 45366, July 9, 2002]

§ 22.215 [Reserved]
§ 22.217 Bidding credit for small businesses.
A winning bidder that qualifies as a small business, as defined in § 22.223(b)(1), or a consortium of small
businesses may use a bidding credit of thirty-five (35) percent to lower the cost of its winning bid. A winning bidder
that qualifies as a small business, as defined in § 22.223(b)(2), or consortium of small businesses may use a
bidding credit of twenty-five (25) percent to lower the cost of its winning bid.

[68 FR 42998, July 21, 2003]

§ 22.221 Eligibility for partitioned licenses.
If partitioned licenses are being applied for in conjunction with a license(s) to be awarded through competitive
bidding procedures—

     (a) The applicable procedures for filing short-form applications and for submitting upfront payments and
         down payments contained in this chapter shall be followed by the applicant, who must disclose as part of
         its short-form application all parties to agreement(s) with or among other entities to partition the license
         pursuant to this section, if won at auction (see 47 CFR 1.2105(a)(2)(viii));

     (b) Each party to an agreement to partition the authorization must file a long-form application (FCC Form
         601) for its respective, mutually agreed-upon geographic area together with the application for the
         remainder of the MEA or EA filed by the auction winner.

     (c) If the partitioned authorization is being applied for as a partial assignment of the MEA or EA authorization
         following grant of the initial authorization, request for authorization for partial assignment of an
         authorization shall be made pursuant to § 1.948 of this part.

[59 FR 59507, Nov. 17, 1994, as amended at 64 FR 33781, June 24, 1999]

§ 22.223 Designated entities.
     (a) Scope. The definitions in this section apply to §§ 22.201 through 22.227, unless otherwise specified in
         those sections.

     (b) A small business is an entity that either:

           (1) Together with its affiliates and controlling interests has average gross revenues that are not more
               than $3 million for the preceding three years; or

           (2) Together with its affiliates and controlling interests has average gross revenues that are not more
               than $15 million for the preceding three years.

[68 FR 42998, July 21, 2003]

47 CFR 22.223(b)(2) (enhanced display)                                                                    page 19 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.225
Public Mobile Services

§ 22.225 Certifications, disclosures, 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 small businesses under § 22.223. 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) Definition. The term small business used in this section is defined in § 22.223.

[67 FR 45367, July 9, 2002, as amended at 68 FR 42998, July 21, 2003]

§ 22.227 Petitions to deny and limitations on settlements.
     (a) Procedures regarding petitions to deny long-form applications in the paging service will be governed by §
         1.939 of this chapter.

     (b) The consideration that an individual or an entity will be permitted to receive for agreeing to withdraw an
         application or petition to deny will be limited by the provisions set forth in § 1.935 of this chapter.

[67 FR 45367, July 9, 2002]

§ 22.229 Designated entities.
     (a) Eligibility for small business provisions.

           (1) A very small business is an entity that, together with its controlling interests and affiliates, has
               average annual gross revenues not exceeding $3 million for the preceding three years.

           (2) A small business is an entity that, together with its controlling interests and affiliates, has average
               annual gross revenues not exceeding $15 million for the preceding three years.

           (3) An entrepreneur is an entity that, together with its controlling interests and affiliates, has average
               annual gross revenues not exceeding $40 million for the preceding three years.

     (b) Bidding credits. A winning bidder that qualifies as a very small business, as defined in this section, or a
         consortium of very small businesses may use the bidding credit specified in § 1.2110(f)(2)(i) of this
         chapter. A winning bidder that qualifies as a small business, as defined in 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 an entrepreneur, as defined in this section, or a consortium of entrepreneurs may
         use the bidding credit specified in § 1.2110(f)(2)(iii) of this chapter.

[67 FR 11434, Mar. 14, 2002, as amended at 68 FR 42998, July 21, 2003]

Subpart C—Operational and Technical Requirements

                                              OPERATIONAL REQUIREMENTS

§ 22.301 [Reserved]

47 CFR 22.301 (enhanced display)                                                                             page 20 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.303
Public Mobile Services

§ 22.303 [Reserved]
§ 22.305 Operator and maintenance requirements.
FCC operator permits and licenses are not required to operate, repair or maintain equipment authorized in the Public
Mobile Services. Station licensees are responsible for the proper operation and maintenance of their stations, and
for compliance with FCC rules.

§ 22.307 Operation during emergency.
Licensees of stations in the Public Mobile services may, during a period of emergency in which normal
communications facilities are disrupted as a result of hurricane, flood, earthquake or other natural disaster, civil
unrest, widespread vandalism, national emergencies or emergencies declared by Executive Order of the President,
use their stations to temporarily provide emergency communications services in a manner or configuration not
normally allowed by this part, provided that such operations comply with the provisions of this section.

     (a) Technical limitations. Public Mobile stations providing temporary emergency communications service
         must not transmit:

           (1) On channels other than those authorized for normal operations.

           (2) With power in excess of that authorized for normal operations;

           (3) Emission types other than those authorized for normal operations.

     (b) Discontinuance. Temporary emergency use of Public Mobile stations must be discontinued as soon as
         normal communication facilities are restored. The FCC may, at any time, order the discontinuance of any
         such emergency communication services.

§ 22.313 Station identification.
The licensee of each station in the Public Mobile Services must ensure that the transmissions of that station are
identified in accordance with the requirements of this section.

     (a) Station identification is not required for transmission by:

           (1) Stations in the Cellular Radiotelephone Service;

           (2) General aviation ground stations in the Air-ground Radiotelephone Service;

           (3) [Reserved]

           (4) Stations using Basic Exchange Telephone Radio Systems in the Rural Radiotelephone Service;

           (5) [Reserved]

           (6) Stations operating pursuant to paging geographic area authorizations.

     (b) For all other stations in the Public Mobile Services, station identification must be transmitted each hour
         within five minutes of the hour, or upon completion of the first transmission after the hour. Transmission
         of station identification may be temporarily delayed to avoid interrupting the continuity of any public
         communication in progress, provided that station identification is transmitted at the conclusion of that
         public communication.

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                                                                                                              47 CFR 22.313(c)
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     (c) Station identification must be transmitted by telephony using the English language or by telegraphy using
         the international Morse code, and in a form that can be received using equipment appropriate for the
         modulation type employed, and understood without the use of unscrambling devices, except that,
         alternatively, station identification may be transmitted digitally, provided that the licensee provides the
         Commission with information sufficient to decode the digital transmission to ascertain the call sign.
         Station identification comprises transmission of the call sign assigned by the Commission to the station,
         however, the following may be used in lieu of the call sign.

           (1) For transmission from subscriber operated transmitters, the telephone number or other designation
               assigned by the carrier, provided that a written record of such designations is maintained by the
               carrier;

           (2) For general aviation airborne mobile stations in the Air-Ground Radiotelephone Service, the official
               FAA registration number of the aircraft;

           (3) For stations in the Paging and Radiotelephone Service, a call sign assigned to another station within
               the same system.

[59 FR 59507, Nov. 17, 1994, as amended at 59 FR 59955, Nov. 21, 1994; 62 FR 11633, Mar. 12, 1997; 70 FR 19308, Apr. 13, 2005]

§ 22.321 [Reserved]
§ 22.325 [Reserved]

                                               TECHNICAL REQUIREMENTS

§ 22.351 Channel assignment policy.
The channels allocated for use in the Public Mobile Services are listed in the applicable subparts of this part.
Channels and channel blocks are assigned in such a manner as to facilitate the rendition of service on an
interference-free basis in each service area. Except as otherwise provided in this part, each channel or channel
block is assigned exclusively to one licensee in each service area. All applicants for, and licensees of, stations in the
Public Mobile Services shall cooperate in the selection and use of channels in order to minimize interference and
obtain the most efficient use of the allocated spectrum.

[70 FR 19308, Apr. 13, 2005]

§ 22.352 Protection from interference.
Public Mobile Service stations operating in accordance with applicable FCC rules and the terms and conditions of
their authorizations are normally considered to be non-interfering. If the FCC determines, however, that interference
that significantly interrupts or degrades a radio service is being caused, it may, in accordance with the provisions of
sections 303(f) and 316 of the Communications Act of 1934, as amended, (47 U.S.C. 303(f), 316), require
modifications to any Public Mobile station as necessary to eliminate such interference.

     (a) Failure to operate as authorized. Any licensee causing interference to the service of other stations by
         failing to operate its station in full accordance with its authorization and applicable FCC rules shall
         discontinue all transmissions, except those necessary for the immediate safety of life or property, until it
         can bring its station into full compliance with the authorization and rules.

47 CFR 22.352(a) (enhanced display)                                                                              page 22 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                              47 CFR 22.352(b)
Public Mobile Services

     (b) Intermodulation interference. Licensees should attempt to resolve such interference by technical means.

     (c) Situations in which no protection is afforded. Except as provided elsewhere in this part, no protection from
         interference is afforded in the following situations:

           (1) Interference to base receivers from base or fixed transmitters. Licensees should attempt to resolve
               such interference by technical means or operating arrangements.

           (2) Inteference to mobile receivers from mobile transmitters. No protection is provided against mobile-
               to-mobile interference.

           (3) Interference to base receivers from mobile transmitters. No protection is provided against mobile-to-
               base interference.

           (4) Interference to fixed stations. Licensees should attempt to resolve such interference by technical
               means or operating arrangements.

           (5) Anomalous or infrequent propagation modes. No protection is provided against interference caused
               by tropospheric and ionospheric propagation of signals.

           (6) Facilities for which the Commission is not notified. No protection is provided against interference to
               the service of any additional or modified transmitter operating pursuant to § 1.929 or § 22.165,
               unless and until the licensee modifies its authorization using FCC Form 601.

           (7) In-building radiation systems. No protection is provided against interference to the service of in-
               building radiation systems (see § 22.383).

[59 FR 59507, Nov. 17, 1994, as amended at 62 FR 11633, Mar. 12, 1997; 63 FR 68944, Dec. 14, 1998; 70 FR 19308, Apr. 13, 2005]

§ 22.353 Blanketing interference.
Licensees of Public Mobile Services stations are responsible for resolving cases of blanketing interference in
accordance with the provisions of this section.

     (a) Except as provided in paragraph (c) of this section, licensees must resolve any cases of blanketing
         interference in their area of responsibility caused by operation of their transmitter(s) during a one-year
         period following commencement of service from new or modified transmitter(s). Interference must be
         resolved promptly at no cost to the complainant.

     (b) The area of responsibility is that area in the immediate vicinity of the transmitting antenna of stations
         where the field strength of the electromagnetic radiation from such stations equals or exceeds 115 dBµV/
         m. To determine the radial distance to the boundary of this area, the following formula must be used:

     where d is the radial distance to the boundary, in kilometers

     p is the radial effective radiated power, in kilowatts

     The maximum effective radiated power in the pertinent direction, without consideration of the antenna's
     vertical radiation pattern or height, must be used in the formula.

47 CFR 22.353(b) (enhanced display)                                                                              page 23 of 117
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     (c) Licensees are not required to resolve blanketing interference to mobile receivers or non-RF devices or
         blanketing interference occurring as a result of malfunctioning or mistuned receivers, improperly installed
         consumer antenna systems, or the use of high gain antennas or antenna booster amplifiers by
         consumers.

     (d) Licensees that install transmitting antennas at a location where there are already one or more transmitting
         antennas are responsible for resolving any new cases of blanketing interference in accordance with this
         section.

     (e) Two or more licensees that concurrently install transmitting antennas at the same location are jointly
         responsible for resolving blanketing interference cases, unless the FCC can readily determine which
         station is causing the interference, in which case the licensee of that station is held fully responsible.

     (f) After the one year period of responsibility to resolve blanketing interference, licensees must provide upon
         request technical information to complainants on remedies for blanketing interference.

§ 22.355 Frequency tolerance.
Except as otherwise provided in this part, the carrier frequency of each transmitter in the Public Mobile Services
must be maintained within the tolerances given in Table C–1 of this section.

     Table C–1—Frequency Tolerance for Transmitters in the Public Mobile
                                Services

                                                                                            Mobile
                                              Base, fixed         Mobile >3 watts
        Frequency range (MHz)                                                              ≤3 watts
                                                (ppm)                 (ppm)
                                                                                            (ppm)
 25 to 50                                               20.0                        20.0          50.0
 50 to 450                                                  5.0                      5.0          50.0
 450 to 512                                                 2.5                      5.0              5.0
 821 to 896                                                 1.5                      2.5              2.5
 928 to 929                                                 5.0                     n/a            n/a
 929 to 960                                                 1.5                     n/a            n/a
 2110 to 2220                                           10.0                        n/a            n/a

[61 FR 54099, Oct. 17, 1996]

§ 22.357 Emission types.
Any authorized station in the Public Mobile Services may transmit emissions of any type(s) that comply with the
applicable emission rule, i.e. § 22.359, § 22.861 or § 22.917.

[70 FR 19308, Apr. 13, 2005]

§ 22.359 Emission limitations.
The rules in this section govern the spectral characteristics of emissions in the Public Mobile Services, except for
the Air-Ground Radiotelephone Service (see § 22.861, instead) and the Cellular Radiotelephone Service (see §
22.917, instead).
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     (a) Out of band emissions. The power of any emission outside of the authorized operating frequency ranges
         must be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log (P) dB.

     (b) Measurement procedure. Compliance with these rules is based on the use of measurement
         instrumentation employing a resolution bandwidth of 30 kHz or more. In the 60 kHz bands immediately
         outside and adjacent to the authorized frequency range or channel, a resolution bandwidth of at least one
         percent of the emission bandwidth of the fundamental emission of the transmitter may be employed. A
         narrower resolution bandwidth is permitted in all cases to improve measurement accuracy provided the
         measured power is integrated over the full required measurement bandwidth (i.e., 30 kHz or 1 percent of
         emission bandwidth, as specified). The emission bandwidth is defined as the width of the signal between
         two points, one below the carrier center frequency and one above the carrier center frequency, outside of
         which all emissions are attenuated at least 26 dB below the transmitter power.

     (c) Alternative out of band emission limit. Licensees in the Public Mobile Services may establish an
         alternative out of band emission limit to be used at specified frequencies (band edges) in specified
         geographical areas, in lieu of that set forth in this section, pursuant to a private contractual arrangement
         of all affected licensees and applicants. In this event, each party to such contract shall maintain a copy of
         the contract in their station files and disclose it to prospective assignees or transferees and, upon request,
         to the FCC.

     (d) Interference caused by out of band emissions. If any emission from a transmitter operating in any of the
         Public Mobile Services results in interference to users of another radio service, the FCC may require a
         greater attenuation of that emission than specified in this section.

[70 FR 19308, Apr. 13, 2005]

§ 22.365 Antenna structures; air navigation safety.
Licensees that own their antenna structures must not allow these antenna structures to become a hazard to air
navigation. In general, antenna structure owners are responsible for registering antenna structures with the FCC if
required by part 17 of this chapter, and for installing and maintaining any required marking and lighting. However, in
the event of default of this responsibility by an antenna structure owner, each FCC permittee or licensee authorized
to use an affected antenna structure will be held responsible by the FCC for ensuring that the antenna structure
continues to meet the requirements of part 17 of this chapter. See § 17.6 of this chapter.

     (a) Marking and lighting. Antenna structures must be marked, lighted and maintained in accordance with part
         17 of this chapter and all applicable rules and requirements of the Federal Aviation Administration.

     (b) Maintenance contracts. Antenna structure owners (or licensees and permittees, in the event of default by
         an antenna structure owner) may enter into contracts with other entities to monitor and carry out
         necessary maintenance of antenna structures. Antenna structure owners (or licensees and permittees, in
         the event of default by an antenna structure owner) that make such contractual arrangements continue to
         be responsible for the maintenance of antenna structures in regard to air navigation safety.

[61 FR 4365, Feb. 6, 1996]

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                                                                                                          47 CFR 22.377
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§ 22.377 Certification of transmitters.
Transmitters used in the Public Mobile Services, including those used with signal boosters, in-building radiation
systems and cellular repeaters, must be certificated for use in the radio services regulated under this part.
Transmitters must be certificated when the station is ready for service, not necessarily at the time of filing an
application. The FCC may list as certificated only transmitters that are capable of meeting all technical
requirements of the rules governing the service in which they will operate. The procedure for obtaining certification
is set forth in part 2 of this chapter.

[78 FR 25174, Apr. 29, 2013]

§ 22.379 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 18150, Apr. 1, 2020]

§ 22.383 In-building radiation systems.
Licensees may install and operate in-building radiation systems without applying for authorization or notifying the
FCC, provided that the locations of the in-building radiation systems are within the protected service area of the
licensee's authorized transmitter(s) on the same channel or channel block.

Subpart D [Reserved]

Subpart E—Paging and Radiotelephone Service
§ 22.501 Scope.
The rules in this subpart govern the licensing and operation of public mobile paging and radiotelephone stations.
The licensing and operation of these stations are also subject to rules elsewhere in this part that apply generally to
the Public Mobile Services. However, in case of conflict, the rules in this subpart govern.

§ 22.503 Paging geographic area authorizations.
The FCC considers applications for and issues paging geographic area authorizations in the Paging and
Radiotelephone Service in accordance with the rules in this section. Each paging geographic area authorization
contains conditions requiring compliance with paragraphs (h) and (i) of this section.

     (a) Channels. The FCC may issue a paging geographic area authorization for any channel listed in § 22.531 of
         this part or for any channel pair listed in § 22.561 of this part.

     (b) Paging geographic areas. The paging geographic areas are as follows:

           (1) The Nationwide paging geographic area comprises the District of Columbia and all States, Territories
               and possessions of the United States of America.

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           (2) Major Economic Areas (MEAs) and Economic Areas (EAs) are defined below. EAs are defined by the
               Department of Commerce, Bureau of Economic Analysis. See Final Redefinition of the MEA
               Economic Areas, 60 FR 13114 (March 10, 1995). MEAs are based on EAs. In addition to the
               Department of Commerce's 172 EAs, the FCC shall separately license Guam and the Northern
               Mariana Islands, Puerto Rico and the United States Virgin Islands, and American Samoa, which have
               been assigned FCC-created EA numbers 173–175, respectively, and MEA numbers 49–51,
               respectively.

           (3) The 51 MEAs are composed of one or more EAs as defined in the following table:

                                              MEAs                                            EAs
                 1 (Boston)                                             1–3.
                 2 (New York City)                                      4–7, 10.
                 3 (Buffalo)                                            8.
                 4 (Philadelphia)                                       11–12.
                 5 (Washington)                                         13–14.
                 6 (Richmond)                                           15–17, 20.
                 7 (Charlotte-Greensboro-Greenville-Raleigh)            18–19, 21–26, 41–42, 46.
                 8 (Atlanta)                                            27–28, 37–40, 43.
                 9 (Jacksonville)                                       29, 35.
                 10 (Tampa-St. Petersburg-Orlando)                      30, 33–34.
                 11 (Miami)                                             31–32.
                 12 (Pittsburgh)                                        9, 52–53.
                 13 (Cincinnati-Dayton)                                 48–50.
                 14 (Columbus)                                          51.
                 15 (Cleveland)                                         54–55.
                 16 (Detroit)                                           56–58, 61–62.
                 17 (Milwaukee)                                         59–60, 63, 104–105, 108.
                 18 (Chicago)                                           64–66, 68, 97, 101.
                 19 (Indianapolis)                                      67.
                 20 (Minneapolis-St. Paul)                              106–107, 109–114, 116.
                 21 (Des Moines-Quad Cities)                            100, 102–103, 117.
                 22 (Knoxville)                                         44–45.
                 23 (Louisville-Lexington-Evansville)                   47, 69–70, 72.
                 24 (Birmingham)                                        36, 74, 78–79.
                 25 (Nashville)                                         71.
                 26 (Memphis-Jackson)                                   73, 75–77.
                 27 (New Orleans-Baton Rouge)                           80–85.
                 28 (Little Rock)                                       90–92, 95.
                 29 (Kansas City)                                       93, 99, 123.
                 30 (St. Louis)                                         94, 96, 98.
                 31 (Houston)                                           86–87, 131.
                 32 (Dallas-Fort Worth)                                 88–89, 127–130, 135, 137–138.

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                                                                                                     47 CFR 22.503(c)
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                                              MEAs                                             EAs
                 33 (Denver)                                              115, 140–143.
                 34 (Omaha)                                               118–121.
                 35 (Wichita)                                             122.
                 36 (Tulsa)                                               124.
                 37 (Oklahoma City)                                       125–126.
                 38 (San Antonio)                                         132–134.
                 39 (El Paso-Albuquerque)                                 136, 139, 155–157.
                 40 (Phoenix)                                             154, 158–159.
                 41 (Spokane-Billings)                                    144–147, 168.
                 42 (Salt Lake City)                                      148–150, 152.
                 43 (San Francisco-Oakland-San Jose)                      151, 162–165.
                 44 (Los Angeles-San Diego)                               153, 160–161.
                 45 (Portland)                                            166–167.
                 46 (Seattle)                                             169–170.
                 47 (Alaska)                                              171.
                 48 (Hawaii)                                              172.
                 49 (Guam and the Northern Mariana Islands)               173.
                 50 (Puerto Rico and U.S. Virgin Islands)                 174.
                 51 (American Samoa)                                      175.

     (c) Availability. The FCC may determine whether to issue a paging geographic area authorization for any
         specific channel or channel pair in any specific paging geographic area. The FCC may replace existing site
         specific authorizations for facilities on a channel or channel pair located in a paging geographic area with
         a paging geographic area authorization for that channel or channel pair, if in its sole discretion, the FCC
         determines that the public interest would be served by such replacement.

     (d) Filing windows. The FCC accepts applications for paging geographic area authorizations only during filing
         windows. The FCC issues Public Notices announcing in advance the dates of the filing windows, and the
         specific paging geographic areas and channels for which applications may be accepted.

     (e) One grant per geographic area. The FCC may grant one and only one application for a paging geographic
         area authorization for any specific channel or channel pair in any specific paging geographic area defined
         in paragraph (b) of this section. Selection from among mutually exclusive applications for a paging
         geographic area authorization will be made in accordance with the procedures in §§ 22.131 and 22.200
         through 22.299. If after the selection process but prior to filing a “long form” application, a successful
         bidder decides to partition the paging geographic area, the FCC may require and accept multiple “long
         form” applications from the consortium members.

     (f) Exclusive right to expand. During the term of a paging geographic area authorization, the FCC does not
         accept, from anyone other than the paging geographic area licensee, any major application for
         authorization to operate a facility that would serve unserved area within the paging geographic area
         specified in that paging geographic area authorization, on the channel specified in that paging geographic
         area authorization, unless any extension of the interfering contour of the proposed facility falls:

           (1) Within the composite interfering contour of another licensee; or,

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            (2) Into unserved area and the paging geographic area licensee consents to such extension.

     (g) Subsequent applications not accepted. During the term of a paging geographic area authorization, the FCC
         does not accept any application for authorization relating to a facility that is or would be located within
         the paging geographic area specified in that paging geographic area authorization, on the channel
         specified in that paging geographic area authorization, except in the following situations:

            (1) FCC grant of an application authorizing the construction of the facility could have a significant
                environmental effect as defined by § 1.1307 of this chapter. See § 22.115(a)(5).

            (2) Specific international coordination procedures are required, prior to assignment of a channel to the
                facility, pursuant to a treaty or other agreement between the United States government and the
                government of Canada or Mexico. See § 22.169.

            (3) The paging geographic area licensee or another licensee of a system within the paging geographic
                area applies to assign its authorization or for FCC consent to a transfer of control.

     (h) Adjacent geographic area coordination required. Before constructing a facility for which the interfering
         contour (as defined in § 22.537 or § 22.567 of this part, as appropriate for the channel involved) would
         extend into another paging geographic area, a paging geographic area licensee must obtain the consent
         of the relevant co-channel paging geographic area licensee, if any, into whose area the interfering contour
         would extend. Licensees are expected to cooperate fully and in good faith attempt to resolve potential
         interference problems before bringing matters to the FCC. In the event that there is no co-channel paging
         geographic area licensee from whom to obtain consent in the area into which the interfering contour
         would extend, the facility may be constructed and operated subject to the condition that, at such time as
         the FCC issues a paging geographic area authorization for that adjacent geographic area, either consent
         must be obtained or the facility modified or eliminated such that the interfering contour no longer extends
         into the adjacent geographic area.

      (i)   Protection of existing service. All facilities constructed and operated pursuant to a paging geographic area
            authorization must provide co-channel interference protection in accordance with § 22.537 or § 22.567,
            as appropriate for the channel involved, to all authorized co-channel facilities of exclusive licensees within
            the paging geographic area. Non-exclusive licensees on the thirty-five exclusive 929 MHz channels are not
            entitled to exclusive status, and will continue to operate under the sharing arrangements established with
            the exclusive licensees and other non-exclusive licensees that were in effect prior to February 19, 1997.
            MEA, EA, and nationwide geographic area licensees have the right to share with non-exclusive licensees
            on the thirty-five exclusive 929 MHz channels on a non-interfering basis.

      (j)   Site location restriction. The transmitting antenna of each facility constructed and operated pursuant to a
            paging geographic area authorization must be located within the paging geographic area specified in the
            authorization.

     (k) Coverage requirements. Failure by an MEA or EA licensee to meet either the coverage requirements in
         paragraphs (k)(1) and (k)(2) of this section, or alternatively, the substantial service requirement in
         paragraph (k)(3) of this section, will result in automatic termination of authorizations for those facilities
         that were not authorized, constructed, and operating at the time the geographic area authorization was
         granted. MEA and EA licensees have the burden of showing when their facilities were authorized,
         constructed, and operating, and should retain necessary records of these sites until coverage
         requirements are fulfilled. For the purpose of this paragraph, to “cover” area means to include geographic

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                                                                                                      47 CFR 22.503(k)(1)
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           area within the composite of the service contour(s) determined by the methods of § 22.537 or § 22.567
           as appropriate for the particular channel involved. Licensees may determine the population of geographic
           areas included within their service contours using either the 1990 census or the 2000 census, but not
           both.

           (1) No later than three years after the initial grant of an MEA or EA geographic area authorization, the
               licensee must construct or otherwise acquire and operate sufficient facilities to cover one third of
               the population in the paging geographic area. The licensee must notify the FCC at the end of the
               three-year period pursuant to § 1.946 of this chapter, either that it has satisfied this requirement or
               that it plans to satisfy the alternative requirement to provide substantial service in accordance with
               paragraph (k)(3) of this section.

           (2) No later than five years after the initial grant of an MEA or EA geographic area authorization, the
               licensee must construct or otherwise acquire and operate sufficient facilities to cover two thirds of
               the population in the paging geographic area. The licensee must notify the FCC at the end of the five
               year period pursuant to § 1.946 of this chapter, either that it has satisfied this requirement or that it
               has satisfied the alternative requirement to provide substantial service in accordance with paragraph
               (k)(3) of this section.

           (3) As an alternative to the coverage requirements of paragraphs (k)(1) and (k)(2) of this section, the
               paging geographic area licensee may demonstrate that, no later than five years after the initial grant
               of its paging geographic area authorization, it provides substantial service to the paging geographic
               area. “Substantial service” means service that is sound, favorable, and substantially above a level of
               mediocre service that would barely warrant renewal.

[62 FR 11633, Mar. 12, 1997, as amended at 63 FR 68945, Dec. 14, 1998; 64 FR 33782, June 24, 1999]

§ 22.507 Number of transmitters per station.
This section concerns the number of transmitters licensed under each station authorization in the Paging and
Radiotelephone Service, other than paging geographic area authorizations.

     (a) Operationally related transmitters. Each station must have at least one transmitter. There is no limit to the
         number of transmitters that a station may comprise. However, transmitters within a station should be
         operationally related and/or should serve the same general geographical area. Operationally related
         transmitters are those that operate together as a system (e.g., trunked systems, simulcast systems),
         rather than independently.

     (b) Split of large systems. The FCC may split wide-area systems into two or more stations for administrative
         convenience. Except for nationwide paging and other operationally related transmitters, transmitters that
         are widely separated geographically are not licensed under a single authorization.

     (c) Consolidation of separate stations. The FCC may consolidate site-specific contiguous authorizations upon
         request (FCC Form 601) of the licensee, if appropriate under paragraph (a) of this section. Paging
         licensees may include remote, stand-alone transmitters under the single system-wide authorization, if the
         remote, stand-alone transmitter is linked to the system via a control/repeater facility or by satellite.
         Including a remote, stand-alone transmitter in a system-wide authorization does not alter the limitations
         provided under § 22.503(f) on entities other than the paging geographic area licensee. In the alternative,
         paging licensees may maintain separate site-specific authorizations for stand-alone or remote
         transmitters. The earliest expiration date of the authorizations that make up the single system-wide

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                                                                                                          47 CFR 22.507(d)
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           authorization will determine the expiration date for the system-wide authorization. Licensees must file
           timely renewal applications for site-specific authorizations included in a single system-wide authorization
           request until the request is approved. Renewal of the system-wide authorization will be subject to § 1.949
           of this chapter.

     (d) Replacement of site-by-site authorizations with single authorization. After a paging geographic area
         authorization for a channel has been issued, the FCC may, on its own motion, replace the authorization(s)
         of any other licensee (for facilities located within that paging geographic area on that channel) with a
         single replacement authorization.

[62 FR 11634, Mar. 12, 1997, as amended at 63 FR 68945, Dec. 14, 1998; 64 FR 33784, June 24, 1999]

§ 22.509 Procedures for mutually exclusive applications in the Paging and Radiotelephone
Service.
Mutually exclusive applications in the Paging and Radiotelephone Service, including those that are mutually
exclusive with applications in the Rural Radiotelephone Service, are processed in accordance with § 22.131 and
with this section.

     (a) Applications in the Paging and Radiotelephone Service may be mutually exclusive with applications in the
         Rural Radiotelephone Service if they seek authorization to operate facilities on the same channel in the
         same area, or the technical proposals are otherwise in conflict. See § 22.567.

     (b) A modification application in either service filed on the earliest filing date may cause all later-filed mutually
         exclusive applications of any type in either service to be “cut off” (excluded from a same-day filing group)
         and dismissed, pursuant to § 22.131(c)(3)(ii) and § 22.131(c)(4).

[59 FR 59956, Nov. 21, 1994, as amended at 61 FR 54099, Oct. 17, 1996; 64 FR 33784, June 24, 1999]

§ 22.511 Construction period for the Paging and Radiotelephone Service.
The construction period for stations in the Paging and Radiotelephone Service is one year.

§ 22.513 Partitioning and disaggregation.
MEA and EA licensees may apply to partition their authorized geographic service area or disaggregate their
authorized spectrum at any time following grant of their geographic area authorizations. Nationwide geographic
area licensees may apply to partition their authorized geographic service area or disaggregate their authorized
spectrum at any time as of August 23, 1999.

     (a) Application required. Parties seeking approval for partitioning and/or disaggregation shall apply for partial
         assignment of a license pursuant to § 1.948 of this chapter.

     (b) 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 authorized geographic service area. The partitioned service area
         shall be defined by 120 sets of geographic coordinates at points at every 3 degrees azimuth from a point
         within the partitioned service area along the partitioned service area boundary unless either an FCC-
         recognized service area is used (e.g., MEA or EA) or county lines are followed. The geographical
         coordinates must be specified in degrees, minutes, and seconds to the nearest second latitude and

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                                                                                                        47 CFR 22.513(c)
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           longitude, and must be based upon the 1983 North American Datum (NAD83). In the case where FCC-
           recognized service areas or county lines are used, applicants need only list the specific area(s) through
           use of FCC designations or county names that constitute the partitioned area.

     (c) Disaggregation. Spectrum may be disaggregated in any amount.

     (d) Combined partitioning and disaggregation. Licensees may apply for partial assignment of authorizations
         that propose combinations of partitioning and disaggregation.

     (e) 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 § 1.955 of this chapter.

[64 FR 33784, June 24, 1999, as amended at 82 FR 41547, Sept. 1, 2017]

§ 22.515 Permissible communications paths.
Mobile stations may communicate only with and through base stations. Base stations may communicate only with
mobile stations and receivers on land or surface vessels.

§ 22.527 Signal boosters.
Licensees may install and operate signal boosters on channels listed in § 22.531 only in accordance with the
provisions of § 22.165 governing additional transmitters for existing systems. Licensees must not allow any signal
booster that they operate to cause interference to the service or operation of any other authorized stations or
systems.

[61 FR 31051, June 19, 1996]

§ 22.529 Application requirements for the Paging and Radiotelephone Service.
In addition to information required by subparts B and D of this part, applications for authorization in the Paging and
Radiotelephone Service contain required information as described in the instructions to the form. Site coordinates
must be referenced to NAD83 and be correct to + −1 second.

     (a) Administrative information. The following information, associated with Form 601, is required as indicated.
         Each application of any type, including applications for paging geographic area authorizations, must
         contain one and only one Schedule A.

           (1) The purpose of the filing is required for each application of any type.

           (2) The geographic area designator, channel and geographic area name are required only for each
               application for a paging geographic area authorization.

           (3) The FCC control point number, if any, the location (street address, city or town, state), the telephone
               number and an indication of the desired database action are required only for each application
               proposing to add or delete a control point.

           (4) The FCC location number, file number and location (street address, city or town, state) of authorized
               facilities that have not been constructed are required only for each application requesting an
               extension of time to construct those facilities.

47 CFR 22.529(a)(4) (enhanced display)                                                                     page 32 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.529(b)
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     (b) Technical data. The following data, associated with FCC Form 601, are required as indicated for each
         application. Applications for a paging geographic area authorization must not contain Schedule B. Other
         type of applications may contain as many Schedule Bs as are necessary for the intended purpose.

           (1) For each transmitting antenna site to be added, deleted or modified, the following are required: an
               indication of the desired database action, the Commission location number, if any, the street address
               or other description of the transmitting antenna site, the city, county and state, the geographic
               coordinates (latitude and longitude), correct to ±1 second, of the transmitting antenna site (NAD83),
               and in the case of a proposed relocation of a transmitting antenna, the Commission location number
               and geographic coordinates, correct to ±1 second, of the transmitting antenna site (NAD83) to which
               the geographic coordinates of the current location are referenced.

           (2) For each transmitting antenna site to be added, deleted or modified, the following supplementary
               information is required: An indication as to whether or not the transmitting antenna site is within 200
               kilometers (124 miles) of the U.S.-Mexico border, and an indication as to whether or not the
               transmitting antenna site is North of Line A or East of Line C. Line A and Line C are defined in § 2.1
               of this chapter. For each adjacent geographic area within 200 kilometers (124 miles) of each
               transmitting antenna site to be added, deleted or modified, the geographic area designator and
               name, and the shortest distance (in kilometers) to the boundary of that geographic area.

           (3) The height (in meters) above average terrain of the center of radiation of the antenna, the beamwidth
               of the main lobe of the horizontal radiation pattern of the electric field of the antenna, the height (in
               meters) to the tip of the antenna above ground level, a polar plot of the horizontal gain pattern of the
               antenna, the antenna gain in the maximum lobe and the electric field polarization of the wave
               emitted by the antenna when installed as proposed.

                 (i)   The center frequency of the requested channel, the transmitter classification (e.g. base, fixed
                       mobile), the designator for any non-standard emission type to be used, including bandwidth and
                       modulation type, and the maximum effective radiated power.

                 (ii) For each of the eight cardinal radials, the antenna height above the average elevation along the
                      radial, and the effective radiated power of each transmitter in the direction of the radial.

                (iii) For each transmitter proposed to transmit on a channel reserved for point-to-multipoint
                      operation involving transmission to four or more points of communications (i.e. base
                      transmitters), the following is required for each point of communication: an indication of the
                      desired database action, the location (city or town, state), and the geographical coordinates
                      (latitude and longitude, NAD 83).

     (c) Upon request by an applicant, licensee, or the Commission, a part 22 applicant or licensee of whom the
         request is made shall furnish the antenna type, model, and the name of the antenna manufacturer to the
         requesting party within ten (10) days of receiving written notification.

[62 FR 11635, Mar. 12, 1997, as amended at 63 FR 68945, Dec. 14, 1998; 64 FR 53240, Oct. 1, 1999]

                                                    PAGING OPERATION

47 CFR 22.529(c) (enhanced display)                                                                        page 33 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.531
Public Mobile Services

§ 22.531 Channels for paging operation.
The following channels are allocated for assignment to base transmitters that provide paging service, either
individually or collectively under a paging geographic area authorization. Unless otherwise indicated, all channels
have a bandwidth of 20 kHz and are designated by their center frequencies in MegaHertz.

                                              Low VHF Channels
 35.20                      35.46                        43.20                 43.46
 35.22                      35.50                        43.22                 43.50
 35.24                      35.54                        43.24                 43.54
 35.26                      35.56                        43.26                 43.56
 35.30                      35.58                        43.30                 43.58
 35.34                      35.60                        43.34                 43.60
 35.38                      35.62                        43.38                 43.62
 35.42                      35.66                        43.42                 43.66
                                              High VHF Channels
 152.24                     152.84                       158.10                158.70
                                                UHF Channels
 931.0125                   931.2625                     931.5125              931.7625
 931.0375                   931.2875                     931.5375              931.7875
 931.0625                   931.3125                     931.5625              931.8125
 931.0875                   931.3375                     931.5875              931.8375
 931.1125                   931.3625                     931.6125              931.8625
 931.1375                   931.3875                     931.6375              931.8875
 931.1625                   931.4125                     931.6625              931.9125
 931.1875                   931.4375                     931.6875              931.9375
 931.2125                   931.4625                     931.7125              931.9625
 931.2375                   931.4875                     931.7375              931.9875

    (a)–(b) [Reserved]

     (c) Upon application using FCC Form 601, common carriers may be authorized to provide one-way paging
         service using the leased subcarrier facilities of broadcast stations licensed under part 73 of this chapter.

     (d) Occasionally in case law and other formal and informal documents, the low VHF channels have been
         referred to as “lowband” channels, and the high VHF channels have been referred to as “guardband”
         channels.

     (e) Pursuant to the U.S.-Canada Interim Coordination Considerations for 929–932 MHz, as amended, only the
         following UHF channels may be assigned in the continental United States North of Line A or in the State
         of Alaska East of Line C, within the indicated longitudes:

            (1) From longitude W.73° to longitude W.75° and from longitude W.78° to longitude W.81°:

                 931.0125                     931.1125              931.1875                931.2625
                 931.0375                     931.1375              931.2125                931.8625

47 CFR 22.531(e)(1) (enhanced display)                                                                   page 34 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                           47 CFR 22.531(e)(2)
Public Mobile Services

                 931.0625                     931.1625                 931.2375

           (2) From longitude W.81° to longitude W.85°:

                 931.0125                     931.2125                 931.3875                    931.5875
                 931.0375                     931.2375                 931.4125                    931.6125
                 931.0625                     931.2625                 931.4625                    931.6375
                 931.1125                     931.2875                 931.4875                    931.8625
                 931.1375                     931.3125                 931.5125
                 931.1625                     931.3375                 931.5375
                 931.1875                     931.3625                 931.5625

           (3) Longitudes other than specified in paragraphs (e)(1) and (e)(2) of this section:

                 931.0125                     931.1625                 931.2875                    931.4125
                 931.0375                     931.1875                 931.3125                    931.4625
                 931.0625                     931.2125                 931.3375                    931.8625
                 931.1125                     931.2375                 931.3625
                 931.1375                     931.2625                 931.3875

           (4) At any longitude, with authorization condition requiring coordinated, shared use and equal access by
               licensees in both countries:

                 931.4375                     931.8875                 931.9125                    931.9375

     (f) For the purpose of issuing paging geographic authorizations, the paging geographic areas used for UHF
         channels are the MEAs, and the paging geographic areas used for the low and high VHF channels are the
         EAs (see § 22.503(b)).

[59 FR 59507, Nov. 17, 1994, as amended at 59 FR 59954, Nov. 21, 1994; 62 FR 11635, Mar. 12, 1997; 63 FR 68945, Dec. 14, 1998;
64 FR 33784, June 24, 1999; 70 FR 19309, Apr. 13, 2005]

§ 22.535 Effective radiated power limits.
The effective radiated power (ERP) of transmitters operating on the channels listed in § 22.531 must not exceed the
limits in this section.

47 CFR 22.535 (enhanced display)                                                                                page 35 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.535(a)
Public Mobile Services

     (a) Maximum ERP. The ERP must not exceed the applicable limits in this paragraph under any circumstances.

                          Frequency range (MHz)                              Maximum ERP (Watts)
            35–36                                                                                            600
            43–44                                                                                            500
            152–159                                                                                         1400
            931–932                                                                                         3500

     (b) Basic power limit. Except as provided in paragraph (d) of this section, the ERP of transmitters on the VHF
         channels must not exceed 500 Watts.

     (c) Height-power limit. Except as provided in paragraph (d) of this section, the ERP of transmitters on the VHF
         channels must not exceed the amount that would result in an average distance to the service contour of
         32.2 kilometers (20 miles). The average distance to the service contour is calculated by taking the
         arithmetic mean of the distances determined using the procedures specified in § 22.537 for the eight
         cardinal radial directions, excluding cardinal radial directions for which 90% or more of the distance so
         calculated is over water.

     (d) Encompassed interfering contour areas. Transmitters are exempt from the basic power and height-power
         limits of this section if the area within their interfering contours is totally encompassed by the interfering
         contours of operating co-channel base transmitters controlled by the same licensee. For the purpose of
         this paragraph, operating transmitters are authorized transmitters that are providing service to
         subscribers.

     (e) Adjacent channel protection. The ERP of transmitters must not exceed 500 Watts if they:

           (1) Transmit on a channel in the 152–159 MHz frequency range and are located less than 5 kilometers
               (3.1 miles) from any station licensed in the Private Radio Services that receives on an adjacent
               channel; or,

           (2) Transmit on channel 158.10 or 158.70 MHz and are located less than 5 kilometers (3.1 miles) from
               any station licensed in the Public Mobile Services that receives on either of the following adjacent
               channels: 158.07 MHz or 158.67 MHz.

     (f) Signal boosters. The effective radiated power of signal boosters must not exceed 5 watts ERP under any
         normal operating condition.

[59 FR 59507, Nov. 17, 1994, as amended at 61 FR 31051, June 19, 1996]

§ 22.537 Technical channel assignment criteria.
The rules in this section establish technical assignment criteria for the channels listed in § 22.531. These criteria
permit channel assignments to be made in a manner such that reception by public paging receivers of signals from
base transmitters, within the service area of such base transmitters, is protected from interference caused by the
operation of independent co-channel base transmitters.

     (a) Contour overlap. The FCC may grant an application requesting assignment of a channel to a proposed
         base transmitter only if:

47 CFR 22.537(a) (enhanced display)                                                                        page 36 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.537(a)(1)
Public Mobile Services

           (1) The interfering contour of the proposed transmitter does not overlap the service contour of any
               protected co-channel transmitter controlled by a carrier other than the applicant, unless that carrier
               has agreed in writing to accept any interference that may result from operation of the proposed
               transmitter; and,

           (2) The service contour of the proposed transmitter does not overlap the interfering contour of any
               protected co-channel transmitter controlled by a carrier other than the applicant, unless the applicant
               agrees to accept any interference that may result from operation of the protected co-channel
               transmitter; and,

           (3) The area and/or population to which service would be provided by the proposed transmitter is
               substantial, and service gained would exceed that lost as a result of agreements to accept
               interference.

     (b) Protected transmitter. For the purposes of this section, protected transmitters are authorized transmitters
         for which there is a current FCC public record and transmitters proposed in prior-filed pending
         applications.

     (c) VHF service contour. For paging stations transmitting on the VHF channels, the distance from the
         transmitting antenna to the service contour along each cardinal radial is calculated as follows:

           d = 1.243 × h0.40 × p0.20
     where d is the radial distance in kilometers

     h is the radial antenna HAAT in meters

     p is the radial ERP in Watts

           (1) Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
               above formula.

           (2) The value used for p in the above formula must not be less than 27 dB less than the maximum ERP
               in any direction or 0.1 Watt, whichever is more.

           (3) The distance from the transmitting antenna to the service contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               However, in resolving petitions to deny, the FCC may calculate the distance to the service contour
               using the formula in paragraph (c) of this section with actual HAAT and ERP data for the inter-station
               radial and additional radials above and below the inter-station radial at 2.5° intervals.

     (d) VHF interfering contour. For paging stations transmitting on the VHF channels, the distance from the
         transmitting antenna to the interfering contour along each cardinal radial is calculated as follows:

           d = 6.509 × h0.28 × p0.17
     where d is the radial distance in kilometers

     h is the radial antenna HAAT in meters

     p is the radial ERP in Watts

47 CFR 22.537(d) (enhanced display)                                                                         page 37 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                   47 CFR 22.537(d)(1)
Public Mobile Services

           (1) Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
               above formula.

           (2) The value used for p in the above formula must not be less than 27 dB less than the maximum ERP
               in any direction or 0.1 Watt, whichever is more.

           (3) The distance from the transmitting antenna to the interfering contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               In resolving petitions to deny, however, the FCC may calculate the distance to the interfering contour
               using the formula in paragraph (d) of this section with actual HAAT and ERP data for the inter-station
               radial and additional radials above and below the inter-station radial at 2.5° intervals.

     (e) 931 MHz service contour. For paging stations transmitting on the 931 MHz channels, the service contour
         is a circle, centered on the transmitting antenna, with a radius determined from Table E–1 of this section.

                                    Table E—1–931 MHz Paging Service Radii

              Service radius km (miles)                                Effective radiated power (Watts)
            Antenna HAAT meters (feet)          0–125      126–250       251–500      501–1000      1001–1860     1861–3500
            0–177                              32.2 (20)    32.2 (20)    32.2 (20)     32.2 (20)      32.2 (20)     32.2 (20)
            (0–581)
            178–305                            32.2 (20)    32.2 (20)    32.2 (20)     32.2 (20)      37.0 (23)     41.8 (26)
            (582–1001)
            306–427                            32.2 (20)    32.2 (20)    37.0 (23)     41.8 (26)      56.3 (35)     56.3 (35)
            (1002–1401)
            428–610                            32.2 (20)    37.0 (23)    41.8 (26)     56.3 (35)      56.3 (35)     56.3 (35)
            (1402–2001)
            611–861                            37.0 (23)    41.8 (26)    41.8 (26)     56.3 (35)      83.7 (52)     83.7 (52)
            (2002–2825)
            862–1219                           41.8 (26)    56.3 (35)    56.3 (35)     83.7 (52)      83.7 (52)     83.7 (52)
            (2826–3999)
            1220 +                             56.3 (35)    56.3 (35)    83.7 (52)     83.7 (52)      83.7 (52)     83.7 (52)
            (4000 + )

     (f) 931 MHz interfering contour. For paging stations transmitting on the 931 MHz channels, the interfering
         contour is a circle, centered on the transmitting antenna, with a radius determined from Table E–2 of this
         section.

                                 Table E—2–931 MHz Paging Interfering Radii

               Interfering radius km
                                                                     Effective radiated power (Watts)
                      (miles)
              Antenna HAAT meters
                                              0–125        126–250       251–500      501–1000      1001–1860 1861–3500
                     (feet)
            0–177                             80.5 (50)    80.5 (50)      80.5 (50)     80.5 (50)     80.5 (50)     80.5 (50)

47 CFR 22.537(f) (enhanced display)                                                                                     page 38 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                47 CFR 22.537(g)
Public Mobile Services

               Interfering radius km
                                                                    Effective radiated power (Watts)
                      (miles)
              Antenna HAAT meters
                                              0–125       126–250      251–500      501–1000     1001–1860 1861–3500
                     (feet)
            (0–581)
            178–305                           80.5 (50)   80.5 (50)     80.5 (50)    80.5 (50)     88.5 (55)    96.6 (60)
            (582–1001)
            306–427                           80.5 (50)   80.5 (50)     88.5 (55)    96.6 (60)    130.4 (81)   130.4 (81)
            (1002–1401)
            428–610                           80.5 (50)   88.5 (55)     96.6 (60)   130.4 (81)    130.4 (81)   130.4 (81)
            (1402–2001)
            611–861                           88.5 (55)   96.6 (60)     96.6 (60)   130.4 (81) 191.5 (119) 191.5 (119)
            (2002–2825)
            862–1219                          96.6 (60)      130.4     130.4 (81)       191.5 191.5 (119) 191.5 (119)
                                                              (81)                      (119)
            (2826–3999)
            1220 +
            (4000 + )                            130.4       130.4         191.5        191.5 191.5 (119) 191.5 (119)
                                                  (81)        (81)         (119)        (119)

     (g) In-building radiation systems. The locations of in-building radiation systems must be within the service
         contour(s) of the licensee's authorized transmitter(s) on the same channel. In-building radiation systems
         are not protected facilities, and therefore do not have service or interfering contours.

     (h) Signal boosters on 931 MHz channels. For the purpose of compliance with § 22.165 and notwithstanding
         paragraphs (e) and (f) of this section, signal boosters operating on the 931 MHz channels with an antenna
         HAAT not exceeding 30 meters (98 feet) are deemed to have as a service contour a circle with a radius of
         1.0 kilometer (0.6 mile) and as an interfering contour a circle with a radius of 10 kilometers (6.2 miles).

[59 FR 59507, Nov. 17, 1994, as amended at 61 FR 31051, June 19, 1996]

§ 22.559 Paging application requirements.
In addition to information required by subparts B and D and § 22.529, applications for authorization to operate a
paging transmitter on the channels listed in § 22.531, other than applications for a paging geographic area
authorization, must contain the applicable supplementary information described in this section.

     (a) Interference exhibit. Except as provided in paragraph (b) of this section, an exhibit demonstrating
         compliance with § 22.537 with regard to protected transmitters is required for applications to operate a
         transmitter on the VHF channels. This exhibit must:

           (1) Identify each protected transmitter located within 109 kilometers (68 miles) of the proposed
               transmitter in directions in which the distance to the interfering contour is 76.5 kilometers (47.5
               miles) or less, and within 178 kilometers (111 miles) of the proposed transmitter in directions in
               which the distance to the interfering contour exceeds 76.5 kilometers (47.5 miles).

47 CFR 22.559(a)(1) (enhanced display)                                                                             page 39 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                    47 CFR 22.559(a)(2)
Public Mobile Services

           (2) For each protected transmitter identified, show the results of distance calculations indicating that
               there would be no overlap of service and interfering contours, or alternatively, indicate that the
               licensee of or applicant for the protected transmitter and/or the applicant, as required, have agreed
               in writing to accept any interference resulting from operation of the proposed transmitter.

     (b) Encompassment exhibit. An exhibit showing that the area within the interfering contour of the proposed
         transmitter would be totally encompassed by interfering contours of operating co-channel base
         transmitters controlled by the applicant is required for applications to operate a transmitter with ERP
         exceeding the basic power and height-power limits of § 22.535. For VHF transmitters, this
         encompassment exhibit may substitute for the interference exhibit required in paragraph (a) of this
         section.

[59 FR 59507, Nov. 17, 1994, as amended at 62 FR 11636, Mar. 12, 1997]

                                      ONE-WAY OR TWO-WAY MOBILE OPERATION

§ 22.561 Channels for one-way or two-way mobile operation.
The following channels are allocated for paired assignment to transmitters that provide (or support other
transmitters that provide) one-way or two-way public land mobile service, either individually or collectively under a
paging geographic area authorization. The paging geographic areas used for these channels are the EAs (see §
22.503(b)(3)). These channels may be assigned for use by mobile or base transmitters as indicated, and or by fixed
transmitters (including control, repeater or other fixed transmitters). The mobile channels may also be assigned for
use by base or fixed transmitters under certain circumstances (see § 22.567(h)). Unless otherwise indicated, all
channels have a bandwidth of 20 kHz and are designated by their center frequencies in MegaHertz.

           Base                       Mobile                    Base                   Mobile
                                               VHF Channels
 152.03                     158.49                    152.57                 157.83
 152.06                     158.52                    152.60                 157.86
 152.09                     158.55                    152.63                 157.89
 152.12                     158.58                    152.66                 157.92
 152.15                     158.61                    152.69                 157.95
 152.18                     158.64                    152.72                 157.98
 152.21                     158.67                    152.75                 158.01
 152.51                     157.77                    152.78                 158.04
 152.54                     157.80                    152.81                 158.07
                                               UHF Channels
 454.025                    459.025                   454.350                459.350
 454.050                    459.050                   454.375                459.375
 454.075                    459.075                   454.400                459.400
 454.100                    459.100                   454.425                459.425
 454.125                    459.125                   454.450                459.450
 454.150                    459.150                   454.475                459.475
 454.175                    459.175                   454.500                459.500

47 CFR 22.561 (enhanced display)                                                                         page 40 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.565
Public Mobile Services

           Base                       Mobile                     Base                       Mobile
 454.200                    459.200                    454.525                    459.525
 454.225                    459.225                    454.550                    459.550
 454.250                    459.250                    454.575                    459.575
 454.275                    459.275                    454.600                    459.600
 454.300                    459.300                    454.625                    459.625
 454.325                    459.325                    454.650                    459.650

[59 FR 59507, Nov. 17, 1994; 60 FR 9889, Feb. 22, 1995, as amended at 62 FR 11636, Mar. 12, 1997]

§ 22.565 Transmitting power limits.
The transmitting power of base, mobile and fixed transmitters operating on the channels listed in § 22.561 must not
exceed the limits in this section.

     (a) Maximum ERP. The effective radiated power (ERP) of base and fixed transmitters must not exceed the
         applicable limits in this paragraph under any circumstances.

                           Frequency range (MHz)                                 Maximum ERP (watts)
            152–153                                                                                       1400
            157–159                                                                                        150
            454–455                                                                                       3500
            459–460                                                                                        150

     (b) Basic power limit. Except as provided in paragraph (d) of this section, the ERP of base transmitters must
         not exceed 500 Watts.

     (c) Height-power limits. Except as provided in paragraph (d) of this section, the ERP of base transmitters
         must not exceed the amount that would result in an average distance to the service contour of 41.6
         kilometers (26 miles) for VHF channels or 30.7 kilometers (19 miles) for UHF channels. The average
         distance to the service contour is calculated by taking the arithmetic mean of the distances determined
         using the procedures specified in § 22.567 for the eight cardinal radial directions, excluding cardinal radial
         directions for which 90% or more of the distance so calculated is over water.

     (d) Encompassed interfering contour areas. Base transmitters are exempt from the basic power and height-
         power limits of this section if the area within their interfering contours is totally encompassed by the
         interfering contours of operating co-channel based transmitters controlled by the same licensee. For the
         purpose of this paragraph, operating transmitters are authorized transmitters that are providing service to
         subscribers.

     (e) Adjacent channel protection. The ERP of base and fixed transmitters must not exceed 500 Watts if they
         transmit on channel 454.025 MHz and are located less than 7 kilometers (4.3 miles) from any Private
         Radio Services station receiving on adjacent channel 454.0000 MHz.

     (f) Mobile transmitters. The transmitter output power of mobile transmitters must not exceed 60 watts.

[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19309, Apr. 13, 2005]

47 CFR 22.565(f) (enhanced display)                                                                       page 41 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.567
Public Mobile Services

§ 22.567 Technical channel assignment criteria.
The rules in this section establish technical assignment criteria for the channels listed in § 22.561. The criteria in
paragraphs (a) through (f) of this section permit channel assignments to be made in a manner such that reception
by public mobile receivers of signals from base transmitters, within the service area of such base transmitters, is
protected from interference caused by the operation of independent co-channel base and fixed transmitters in the
Paging and Radiotelephone Service and central office stations, including Basic Exchange Telephone Radio Systems
(BETRS), in the Rural Radiotelephone Service. Additional criteria in paragraph (g) of this section permit channel
assignments to be made in a manner such that BETRS communications are protected from interference caused by
the operation of independent co-channel base and fixed transmitters in the Paging and Radiotelephone Service and
other central office stations in the Rural Radiotelephone Service. Separate criteria in paragraph (h) of this section
apply only to assignment of the channels designated in § 22.561 as mobile channels to base and fixed transmitters,
and permit these channel assignments to be made in a manner such that reception by public base and fixed
receivers of signals from associated mobile and fixed transmitters is protected from interference caused by the
operation of independent co-channel base and fixed transmitters.

     (a) Contour overlap. The FCC may grant an application requesting assignment of a channel to a proposed
         base, fixed or central office station transmitter only if:

           (1) The interfering contour of the proposed transmitter does not overlap the service contour of any
               protected co-channel transmitter controlled by a carrier other than the applicant, unless that carrier
               has agreed in writing to accept any interference that may result from operation of the proposed
               transmitter; and

           (2) The service contour of the proposed transmitter does not overlap the interfering contour of any
               protected co-channel transmitter controlled by a carrier other than the applicant, unless the
               application contains a statement that the applicant agrees to accept any interference that may result
               from operation of the protected co-channel transmitter; and

           (3) The area and/or population to which service would be provided by the proposed transmitter is
               substantial, and service gained would exceed that lost as a result of agreements to accept
               interference.

     (b) Protected transmitter. For the purposes of this section, protected transmitters are authorized transmitters
         for which there is a current FCC public record and transmitters proposed in prior-filed pending
         applications, in the Paging and Radiotelephone Service and the Rural Radiotelephone Service.

     (c) VHF service contour. For base stations transmitting on the VHF channels, the radial distance from the
         transmitting antenna to the service contour along each cardinal radial is calculated as follows:

           d = 1.609 × h0.40 × p0.20
     where:

     d is the radial distance in kilometers

     h is the radial antenna HAAT in meters

     p is the radial ERP in Watts

47 CFR 22.567(c) (enhanced display)                                                                       page 42 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.567(c)(1)
Public Mobile Services

           (1) Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
               above formula.

           (2) The value used for p in the above formula must not be less than 27 dB less than the maximum ERP
               in any direction, or 0.1 Watt, whichever is more.

           (3) The distance from the transmitting antenna to the service contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               However, in resolving petitions to deny, the FCC may calculate the distance to the service contour
               using the formula in paragraph (c) of this section with actual HAAT and ERP data for the inter-station
               radial and additional radials above and below the inter-station radial at 2.5° intervals.

     (d) VHF interfering contour. For base and fixed stations transmitting on the VHF channels, the radial distance
         from the transmitting antenna to the interfering contour along each cardinal radial is calculated as
         follows:

           (1) If the radial antenna HAAT is less than 150 meters:

                d = 8.577 × h0.24 × p0.19
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

                Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
                above formula.

           (2) If the radial antenna HAAT is 150 meters or more:

                d = 12.306 × h0.23 × p0.14
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

           (3) The value used for p in the above formulas must not be less than 27 dB less than the maximum ERP
               in any direction, or 0.1 Watt, whichever is more.

           (4) The distance from the transmitting antenna to the interfering contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               However, in resolving petitions to deny, the FCC may calculate the distance to the interfering contour
               using the appropriate formula in paragraph (d) of this section with actual HAAT and ERP data for the
               inter-station radial and additional radials above and below the inter-station radial at 2.5° intervals.

47 CFR 22.567(d)(4) (enhanced display)                                                                      page 43 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.567(e)
Public Mobile Services

     (e) UHF service contour. For base stations transmitting on the UHF channels, the radial distance from the
         transmitting antenna to the service contour along each cardinal radial is calculated as follows:

           d = 1.726 × h0.35 × p0.18
     where:

     d is the radial distance in kilometers

     h is the radial antenna HAAT in meters

     p is the radial ERP in Watts

           (1) Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
               above formula.

           (2) The value used for p in the above formula must not be less than 27 dB less than the maximum ERP
               in any direction, or 0.1 Watt, whichever is more.

           (3) The distance from the transmitting antenna to the service contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               However, in resolving petitions to deny, the FCC may calculate the distance to the service contour
               using the formula in paragraph (e) of this section with actual HAAT and ERP data for the inter-station
               radial and addition radials above and below the below the inter-station radial at 2.5° intervals.

     (f) UHF interfering contour. For base and fixed stations transmitting on the UHF channels, the radial distance
         from the transmitting antenna to the interfering contour along each cardinal radial is calculated as
         follows:

           (1) If the radial antenna HAAT is less than 150 meters:

                d = 9.471 × h0.23 × p0.15
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

                Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
                above formula.

           (2) If the radial antenna HAAT is 150 meters or more:

                d = 6.336 × h0.31 × p0.15
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

47 CFR 22.567(f)(2) (enhanced display)                                                                      page 44 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.567(f)(3)
Public Mobile Services

          p is the radial ERP in Watts

           (3) The value used for p in the above formula must not be less than 27 dB less than the maximum ERP
               in any direction, or 0.1 Watt, whichever is more.

           (4) The distance from the transmitting antenna to the interfering contour along any radial other than the
               eight cardinal radials is routinely calculated by linear interpolation of distance as a function of angle.
               However, in resolving petitions to deny, the FCC may calculate the distance to the interfering contour
               using the appropriate formula in paragraph (f) of this section with actual HAAT and ERP data for the
               inter-station radial and additional radials above and below the inter-station radial at 2.5° intervals.

     (g) Protection for BETRS. In applying the provisions of paragraph (a) of this section, if either or both of the
         transmitters involved is a BETRS central office station, the following contour substitutions must be used:

           (1) The service contour of the BETRS central office station(s) is a circle, centered on the central office
               station antenna, with a radius of 40 kilometers (25 miles).

           (2) The interfering contour of any station of any type, when determining whether it would overlap the
               service contour of a BETRS central office station, is calculated as follows:

                d = 36.364 × h0.2 × p0.1
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

                Whenever the actual HAAT is less than 30 meters (98 feet), 30 must be used as the value for h in the
                above formula. The value used for p in the above formula must not be less than 27 dB less than the
                maximum ERP in any direction, or 0.1 Watt, whichever is more.

     (h) Assignment of mobile channels to base or fixed transmitters. Mobile channels may be assigned to base or
         fixed transmitters if the following criteria are met:

           (1) The paired base channel, as designated in § 22.561, is assigned to base transmitters in the same
               geographical area operated by the same licensee.

           (2) The authorization is granted subject to the condition that no interference be caused to fixed receivers
               in use on or prior to the date of the grant.

§ 22.571 Responsibility for mobile stations.
Mobile stations that are subscribers in good standing to a two-way service in the Paging and Radiotelephone
Service, when receiving service from that station, are considered to be operating under the authorization of that
station. Licensees are responsible for exercising effective operational control over mobile stations receiving service
through their stations. Mobile stations that are subscribers in good standing to a two-way service in the Paging and
Radiotelephone Service, while receiving service from a different station, are considered to be operating under the
authorization of such different station. The licensee of such different station is responsible, during such temporary
period, for exercising effective operational control over such mobile stations as if they were subscribers to it.

47 CFR 22.571 (enhanced display)                                                                            page 45 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.573
Public Mobile Services

§ 22.573 Use of base transmitters as repeaters.
As an additional function, base transmitters may be used as repeaters. Licensees must be able to turn the base
transmitter on or off from the control point regardless of whether a subscriber-operated transmitter is transmitting.

§ 22.575 Use of mobile channel for remote control of station functions.
Carriers may remotely control station functions (e.g. shut down or reactivate base transmitters, turn aviation
obstruction warning lights on or off, etc.) using a control transmitter operating on a mobile channel, subject to the
conditions in this section and in § 22.567(h).

     (a) The control transmitter must be capable of overriding transmissions from subscriber-operated
         transmitters if necessary. Subscriber-operated transmitters must not be capable of being used to
         deliberately or accidentally prevent the licensee from controlling the station.

     (b) The licensee must implement measures designed to prevent station functions from being controlled by
         persons not authorized by the licensee to control the station.

     (c) The control transmitter location must be within the composite service contour of the licensee's authorized
         station on the paired base channel.

§ 22.579 Operation of mobile transmitters across U.S.-Canada border.
Mobile stations licensed by Canada may receive two-way service while in the United States from stations licensed
under this part, after authorization has been granted by the FCC. Mobile stations that normally operate under the
authority of base stations licensed under this part may receive two-way service while in Canada from stations
licensed under this part or by Canada, upon authorization by Canada.

§ 22.589 One-way or two-way application requirements.
In addition to information required by subparts B and D and § 22.529, applications for authorization to operate a
paging transmitter on the channels listed in § 22.531, other than applications for a paging geographic area
authorization, must contain the applicable supplementary information described in this section.

     (a) Interference exhibit. Except as provided in paragraph (b) of this section, an exhibit demonstrating
         compliance with § 22.567 with regard to protected transmitters is required. This exhibit must:

           (1) For UHF channels, identify each protected transmitter located within 108 kilometers (67 miles) of the
               proposed transmitter in directions in which the distance to the interfering contour is 76.4 kilometers
               (47.5 miles) or less, and within 178 kilometers (111 miles) of the proposed transmitter in directions
               in which the distance to the interfering contour exceeds 76.4 kilometers (47.5 miles); and identify
               each protected Basic Exchange Telephone Radio System central office transmitter in the Rural
               Radiotelephone Service within 231 kilometers (144 miles),

           (2) For VHF channels, identify each protected transmitter located within 135 kilometers (84 miles) of the
               proposed transmitter in directions in which the distance to the interfering contour is 93.3 kilometers
               (58 miles) or less, and within 178 kilometers (111 miles) of the proposed transmitter in directions in
               which the distance to the interfering contour exceeds 93.3 kilometers (58 miles).

47 CFR 22.589(a)(2) (enhanced display)                                                                    page 46 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                    47 CFR 22.589(a)(3)
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           (3) For each protected transmitter identified, show the results of distance calculations indicating that
               there would be no overlap of service and interfering contours, or alternatively, indicate that the
               licensee of or applicant for the protected transmitter and/or the applicant, as required, have agreed
               in writing to accept any interference resulting from operation of the proposed transmitter.

     (b) Encompassment exhibit. An exhibit showing that the area within the interfering contour of the proposed
         transmitter would be totally encompassed by interfering contours of operating co-channel base
         transmitters controlled by the applicant is required for applications to operate a transmitter with ERP
         exceeding the basic power and height-power limits of § 22.565. This encompassment exhibit may
         substitute for the interference exhibit required in paragraph (a) of this section.

[59 FR 59507, Nov. 17, 1994, as amended at 62 FR 11636, Mar. 12, 1997]

                                              POINT-TO-POINT OPERATION

§ 22.591 Channels for point-to-point operation.
The following channels are allocated for assignment to fixed transmitters that support other transmitters that
provide public mobile service. Unless otherwise indicated, all channels have a bandwidth of 20 kHz and are
designated by their center frequencies in MegaHertz.

                                              VHF Channels
 72.02                      72.36                     72.80                  75.66
 72.04                      72.38                     72.82                  75.68
 72.06                      72.40                     72.84                  75.70
 72.08                      72.42                     72.86                  75.72
 72.10                      72.46                     72.88                  75.74
 72.12                      72.50                     72.90                  75.76
 72.14                      72.54                     72.92                  75.78
 72.16                      72.58                     72.94                  75.80
 72.18                      72.62                     72.96                  75.82
 72.20                      72.64                     72.98                  75.84
 72.22                      72.66                     75.42                  75.86
 72.24                      72.68                     75.46                  75.88
 72.26                      72.70                     75.50                  75.90
 72.28                      72.72                     75.54                  75.92
 72.30                      72.74                     75.58                  75.94
 72.32                      72.76                     75.62                  75.96
 72.34                      72.78                     75.64                  75.98
 72.10                      72.46                     72.88                  75.74
 72.12                      72.50                     72.90                  75.76
 72.14                      72.54                     72.92                  75.78
 72.16                      72.58                     72.94                  75.80
 72.18                      72.62                     72.96                  75.82

47 CFR 22.591 (enhanced display)                                                                         page 47 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                               47 CFR 22.591(a)
Public Mobile Services

 72.20                         72.64                    72.98                      75.84
 72.22                         72.66                    75.42                      75.86
 72.24                         72.68                    75.46                      75.88
 72.26                         72.70                    75.50                      75.90
 72.28                         72.72                    75.54                      75.92
 72.30                         72.74                    75.58                      75.94
 72.32                         72.76                    75.62                      75.96
 72.34                         72.78                    75.64                      75.98
                                         UHF Channels—State of Hawaii

 488.250                       491.250                  489.750                    492.750
 488.750                       491.750                  490.250                    493.250
 489.250                       492.250                  490.750                    493.750

     (a) The 72–76 MHz channels may be used in point-to-multipoint configurations. The 72–76 MHz channels
         are also allocated for assignment in the Private Radio Services (see part 90 of this chapter).

     (b) [Reserved]

     (c) Channels in the frequency ranges 488.250–490.750 and 491.250–493.750 MHz may be assigned only to
         inter-island fixed stations located in the State of Hawaii.

[59 FR 59507, Nov. 17, 1994; 60 FR 9889, Feb. 22, 1995, as amended at 70 FR 19309, Apr. 13, 2005; 78 FR 25174, Apr. 29, 2013]

§ 22.593 Effective radiated power limits.
The effective radiated power of fixed stations operating on the channels listed in § 22.591 must not exceed 150
Watts. The equivalent isotropically radiated power of existing fixed microwave stations (2110–2130 and
2160–2180 MHz) licensed under this part (pursuant to former rules) must not exceed the applicable limits set forth
in § 101.113 of this chapter.

[70 FR 19309, Apr. 13, 2005]

§ 22.601 Existing microwave stations licensed under this part.
Existing microwave stations (2110–2130 and 2160–2180 MHz) licensed under this part (pursuant to former rules)
are subject to the transition rules in § 22.602. No new microwave systems will be authorized under this part.

     (a) Coordination required. Before filing applications for authority to modify existing stations on these
         channels or major amendments to such applications, carriers must coordinate the planned channel
         usage, using the procedure outlined in § 22.150, with affected parties in this radio service and the Point-
         to-Point Microwave Service and the Multipoint Distribution Service. Affected parties are licensees and
         other applicants with previously filed pending applications whose stations could affect or be affected by
         the proposed modification of the existing station in terms of interference.

     (b) System parameters. In designing a system modification, the applicant must select sites, equipment and
         channels that will avoid harmful interference to other users. All parties must cooperate fully and make
         reasonable efforts to resolve technical problems and conflicts that may inhibit the most effective and
47 CFR 22.601(b) (enhanced display)                                                                              page 48 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.601(c)
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           efficient use of the radio spectrum; however, a party receiving notification is not obligated to suggest
           changes or re-design a proposal in cases involving conflicts. The applicant must identify in the application
           all parties with which the technical proposal was coordinated. In the event that technical problems are not
           resolved or if an affected party does not respond to coordination efforts within 30 days after notification,
           an explanation must be contained in the application. Where technical conflicts are resolved by an
           agreement between the parties that requires special procedures to reduce the likelihood of harmful
           interference (such as the use of artificial site shielding), or would result in a reduction of quality or
           capacity of either system, the details thereof must be contained in the application.

     (c) Bandwidth. Applicants must request the minimum emission bandwidth necessary. The FCC does not
         authorize bandwidths larger than 800 kHz under this part.

[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19309, Apr. 13, 2005]

§ 22.602 Transition of the 2110–2130 and 2160–2180 MHz channels to emerging technologies.
The 2110–2130 and 2160–2180 MHz microwave channels formerly listed in § 22.591 have been re-allocated for
use by emerging technologies (ET) services. No new systems will be authorized under this part. The rules in this
section provide for a transition period during which existing Paging and Radiotelephone Service (PARS) licensees
using these channels may relocate operations to other media or to other fixed channels, including those in other
microwave bands. For PARS licensees relocating operations to other microwave bands, authorization must be
obtained under part 101 of this chapter.

     (a) Licensees proposing to implement ET services may negotiate with PARS licensees authorized to use
         these channels, for the purpose of agreeing to terms under which the PARS licensees would—

           (1) Relocate their operations to other fixed microwave bands or other media, or alternatively,

           (2) Accept a sharing arrangement with the ET licensee that may result in an otherwise impermissible
               level of interference to the PARS operations.

     (b) [Reserved]

     (c) Relocation of fixed microwave licensees in the 2110–2130 MHz and 2160–2180 MHz bands will be
         subject to mandatory negotiations only. A separate mandatory negotiation period will commence for each
         fixed microwave licensee when an ET licensee informs that fixed microwave licensee in writing of its
         desire to negotiate. Mandatory negotiation periods are defined as follows:

           (1) Non-public safety incumbents will have a two-year mandatory negotiation period; and

           (2) Public safety incumbents will have a three-year mandatory negotiation period.

     (d) The mandatory negotiation period is triggered at the option of the ET licensee. Once mandatory
         negotiations have begun, a PARS licensee may not refuse to negotiate and all parties are required to
         negotiate in good faith. Good faith requires each party to provide information to the other that is
         reasonably necessary to facilitate the relocation process. In evaluating claims that a party has not
         negotiated in good faith, the FCC will consider, inter alia, the following factors:

           (1) Whether the ET licensee has made a bona fide offer to relocate the PARS licensee to comparable
               facilities in accordance with Section 101.75(b) of this chapter;

47 CFR 22.602(d)(1) (enhanced display)                                                                    page 49 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                      47 CFR 22.602(d)(2)
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           (2) If the PARS licensee has demanded a premium, the type of premium requested (e.g., whether the
               premium is directly related to relocation, such as system-wide relocations and analog-to-digital
               conversions, versus other types of premiums), and whether the value of the premium as compared
               to the cost of providing comparable facilities is disproportionate (i.e., whether there is a lack of
               proportion or relation between the two);

           (3) What steps the parties have taken to determine the actual cost of relocation to comparable facilities;

           (4) Whether either party has withheld information requested by the other party that is necessary to
               estimate relocation costs or to facilitate the relocation process. Any party alleging a violation of our
               good faith requirement must attach an independent estimate of the relocation costs in question to
               any documentation filed with the Commission in support of its claim. An independent cost estimate
               must include a specification for the comparable facility and a statement of the costs associated with
               providing that facility to the incumbent licensee.

     (e) Involuntary period. After the end of the mandatory negotiation period, ET licensees may initiate involuntary
         relocation procedures under the Commission's rules. ET licensees are obligated to pay to relocate only the
         specific microwave links to which their systems pose an interference problem. Under involuntary
         relocation, a PARS licensee is required to relocate, provided that:

           (1) The ET applicant, provider, licensee or representative guarantees payment of relocation costs,
               including all engineering, equipment, site and FCC fees, as well as any legitimate and prudent
               transaction expenses incurred by the PARS licensee that are directly attributable to an involuntary
               relocation, subject to a cap of two percent of the hard costs involved. Hard costs are defined as the
               actual costs associated with providing a replacement system, such as equipment and engineering
               expenses. ET licensees are not required to pay PARS licensees for internal resources devoted to the
               relocation process. ET licensees are not required to pay for transaction costs incurred by PARS
               licensees during the voluntary or mandatory periods once the involuntary period is initiated or for
               fees that cannot be legitimately tied to the provision of comparable facilities;

           (2) The ET applicant, provider, licensee or representative completes all activities necessary for
               implementing the replacement facilities, including engineering and cost analysis of the relocation
               procedure and, if radio facilities are involved, identifying and obtaining, on the incumbents behalf,
               new channels and frequency coordination; and,

           (3) The ET applicant, provider, licensee or representative builds the replacement system and tests it for
               comparability with the existing 2 GHz system.

     (f) Comparable Facilities. The replacement system provided to an incumbent during an involuntary relocation
         must be at least equivalent to the existing PARS system with respect to the following three factors:

           (1) Throughput. Communications throughput is the amount of information transferred within a system in
               a given amount of time. If analog facilities are being replaced with analog, the ET licensee is required
               to provide the PARS licensee with an equivalent number of 4 kHz voice channels. If digital facilities
               are being replaced with digital, the ET licensee must provide the PARS licensee with equivalent data
               loading bits per second (bps). ET licensees must provide PARS licensees with enough throughput to
               satisfy the PARS licensee's system use at the time of relocation, not match the total capacity of the
               PARS system.

           (2) Reliability. System reliability is the degree to which information is transferred accurately within a
               system. ET licensees must provide PARS licensees with reliability equal to the overall reliability of
               their system. For digital data systems, reliability is measured by the percent of time the bit error rate

47 CFR 22.602(f)(2) (enhanced display)                                                                      page 50 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.602(f)(3)
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                 (BER) exceeds a desired value, and for analog or digital voice transmissions, it is measured by the
                 percent of time that audio signal quality meets an established threshold. If an analog voice system is
                 replaced with a digital voice system, only the resulting frequency response, harmonic distortion,
                 signal-to-noise ratio and its reliability will be considered in determining comparable reliability.

            (3) Operating Costs. Operating costs are the cost to operate and maintain the PARS system. ET
                licensees must compensate PARS licensees for any increased recurring costs associated with the
                replacement facilities (e.g. additional rental payments, increased utility fees) for five years after
                relocation. ET licensees may satisfy this obligation by making a lump-sum payment based on
                present value using current interest rates. Additionally, the maintenance costs to the PARS licensee
                must be equivalent to the 2 GHz system in order for the replacement system to be considered
                comparable.

     (g) The PARS licensee is not required to relocate until the alternative facilities are available to it for a
         reasonable time to make adjustments, determine comparability, and ensure a seamless handoff.

     (h) [Reserved]

      (i)   After April 25, 1996, all major modifications and extensions to existing PARS systems operating on
            channels in the 2110–2130 and 2160–2180 MHz bands will be authorized on a secondary basis to future
            ET operations. All other modifications will render the modified PARS license secondary to future ET
            operations unless the incumbent affirmatively justifies primary status and the incumbent PARS licensee
            establishes that the modification would not add to the relocation costs of ET licensees. Incumbent PARS
            licensees will maintain primary status for the following technical changes:

            (1) Decreases in power;

            (2) Minor changes (increases or decreases) in antenna height;

            (3) Minor location changes (up to two seconds);

            (4) Any data correction which does not involve a change in the location of an existing facility;

            (5) Reductions in authorized bandwidth;

            (6) Minor changes (increases or decreases) in structure height;

            (7) Changes (increases or decreases) in ground elevation that do not affect centerline height;

            (8) Minor equipment changes.

      (j)   Sunset. PARS licensees will maintain primary status in the 2110–2130 MHz and 2160–2180 MHz bands
            unless and until an ET licensee requires use of the spectrum. ET licensees are not required to pay
            relocation costs after the relocation rules sunset (i.e., for the 2110–2130 MHz and 2160–2180 MHz
            bands, ten years after the first ET license is issued in the respective band). Once the relocation rules
            sunset, an ET licensee may require the incumbent to cease operations, provided that the ET licensee
            intends to turn on a system within interference range of the incumbent, as determined by TIA TSB 10–F or
            any standard successor. ET licensee notification to the affected PARS licensee must be in writing and
            must provide the incumbent with no less than six months to vacate the spectrum. After the six-month
            notice period has expired, the PARS licensee must turn its license back into the Commission, unless the
            parties have entered into an agreement which allows the PARS licensee to continue to operate on a
            mutually agreed upon basis. If the parties cannot agree on a schedule or an alternative arrangement,
            requests for extension will be accepted and reviewed on a case-by-case basis. The Commission will grant
            such extensions only if the incumbent can demonstrate that:

47 CFR 22.602(j) (enhanced display)                                                                           page 51 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                      47 CFR 22.602(j)(1)
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            (1) It cannot relocate within the six-month period (e.g., because no alternative spectrum or other
                reasonable option is available), and;

            (2) The public interest would be harmed if the incumbent is forced to terminate operations (e.g., if public
                safety communications services would be disrupted).

     (k) Reimbursement and relocation expenses in the 2110–2130 MHz and 2160–2180 MHz bands. Whenever an
         ET licensee in the 2110–2130 MHz and 2160–2180 MHz band relocates a paired PARS link with one path
         in the 2110–2130 MHz band and the paired path in the 2160–2180 MHz band, the ET license will be
         entitled to reimbursement pursuant to the procedures described in §§ 27.1160 through 27.1174 of this
         chapter.

[61 FR 29689, June 12, 1996, as amended at 70 FR 19309, Apr. 13, 2005; 71 FR 29834, May 24, 2006]

§ 22.603 488–494 MHz fixed service in Hawaii.
Before filing applications for authorization of inter-island control and/or repeater stations, applicants must
coordinate the planned channel usage with existing licensees and other applicants with previously filed
applications, using the procedure outlined in § 22.150. Applicants and licensees shall cooperate fully and make
reasonable efforts to resolve any channel usage conflicts. In situations where technical solutions to such conflicts
cannot be devised, the FCC may select a channel or channels to assign or may designate the application(s) for
hearing. To be acceptable for filing, applications and major technical amendments must contain a certification that
coordination has been completed and an exhibit listing the name(s) of the licensees and applicants with which the
planned channel usage has been coordinated.

                                              POINT-TO-MULTIPOINT OPERATION

§ 22.621 Channels for point-to-multipoint operation.
The following channels are allocated for assignment to transmitters utilized within point-to-multipoint systems that
support transmitters that provide public mobile service. Unless otherwise indicated, all channels have a bandwidth
of 20 kHz and are designated by their center frequencies in MegaHertz. No new licenses will be issued for any 900
MHz frequencies in this section. See part 101, subpart O of this chapter for treatment of incumbents and for new
licensing procedures. Incumbents under part 22 are subject to the restrictions of part 101, subpart O of this chapter
but may make permissible modifications, transfers, assignments, or renew their licenses using procedures, forms,
fees, and filing requirements of part 22.

                                               Public Mobile Pool
                                              (25 kHz bandwidth)
 928.8625                   959.8625                     928.9375                959.9375
 928.8875                   959.8875                     928.9625                959.9625
 928.9125                   959.9125                     928.9875                959.9875
                                              (12.5 kHz bandwidth)
 928.85625                  959.85625                    928.93125               959.93125
 928.86875                  959.86875                    928.94375               959.94375
 928.88125                  959.88125                    928.95625               959.95625
 928.89375                  959.89375                    928.96875               959.96875

47 CFR 22.621 (enhanced display)                                                                           page 52 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                     47 CFR 22.621
Public Mobile Services

 928.90625                  959.90625                    928.98125       959.98125
 928.91875                  959.91875                    928.99375       959.99375
                                     Private Radio General Access Pool
                                              (25 kHz bandwidth)
 956.2625                   956.3125                     956.3625        956.4125
 956.2875                   956.3375                     956.3875        956.4375
 928.0125                   952.0125                     928.1875        952.1875
 928.0375                   952.0375                     928.2125        952.2125
 928.0625                   952.0625                     928.2375        952.2375
 928.0875                   952.0875                     928.2625        952.2625
 928.1125                   952.1125                     928.2875        952.2875
 928.1375                   952.1375                     928.3125        952.3125
 928.1625                   952.1625                     928.3375        952.3375
                                              (12.5 kHz bandwidth)
 956.25625                  956.30625                    956.35625       956.40625
 956.26875                  956.31875                    956.36875       956.41875
 956.28125                  956.33125                    956.38125       956.43125
 956.29375                  956.34375                    956.39375       956.44375
 928.00625                  952.00625                    928.18125       952.18125
 928.01875                  952.01875                    928.19375       952.19375
 928.03125                  952.03125                    928.20625       952.20625
 928.04375                  952.04375                    928.21875       952.21875
 928.05625                  952.05625                    928.23125       952.23125
 928.06875                  952.06875                    928.24375       952.24375
 928.08125                  952.08125                    928.25625       952.25625
 928.09375                  952.09375                    928.26875       952.26875
 928.10625                  952.10625                    928.28125       952.28125
 928.11875                  952.11875                    928.29375       952.29375
 928.13125                  952.13125                    928.30625       952.30625
 928.14375                  952.14375                    928.31875       952.31875
 928.15625                  952.15625                    928.33125       952.33125
 928.16875                  952.16875                    928.34375       952.34375
                                         Private Radio Power Pool
                                              (25 kHz bandwidth)
 928.3625                   952.3625                     928.6125        952.6125
 928.3875                   952.3875                     928.6375        952.6375
 928.4125                   952.4125                     928.6625        952.6625
 928.4375                   952.4375                     928.6875        952.6875
 928.4625                   952.4625                     928.7125        952.7125
 928.4875                   952.4875                     928.7375        952.7375
 928.5125                   952.5125                     928.7625        952.7625

47 CFR 22.621 (enhanced display)                                                     page 53 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                         47 CFR 22.621
Public Mobile Services

 928.5375                   952.5375                     928.7875            952.7875
 928.5625                   952.5625                     928.8125            952.8125
 928.5875                   952.5875                     928.8375            952.8375
                                              (12.5 kHz bandwidth)
 928.35625                  952.35625                    928.60625           952.60625
 928.36875                  952.36875                    928.61875           952.61875
 928.38125                  952.38125                    928.63125           952.63125
 928.39375                  952.39375                    928.64375           952.64375
 928.40625                  952.40625                    928.65625           952.65625
 928.41875                  952.41875                    928.66875           952.66875
 928.43125                  952.43125                    928.68125           952.68125
 928.44375                  952.44375                    928.69375           952.69375
 928.45625                  952.45625                    928.70625           952.70625
 928.46875                  952.46875                    928.71875           952.71875
 928.48125                  952.48125                    928.73125           952.73125
 928.49375                  952.49375                    928.74375           952.74375
 928.50625                  952.50625                    928.75625           952.75625
 928.51875                  952.51875                    928.76875           952.76875
 928.53125                  952.53125                    928.78125           952.78125
 928.54375                  952.54375                    928.79375           952.79375
 928.55625                  952.55625                    928.80625           952.80625
 928.56875                  952.56875                    928.81875           952.81875
 928.58125                  952.58125                    928.83125           952.83125
 928.59375                  952.59375                    928.84375           952.84375
                                   Public, Private, Government Shared Pool
                                              (12.5 kHz bandwidth)
 932.00625                  941.00625                    932.25625           941.25625
 932.01875                  941.01875                    932.26875           941.26875
 932.03125                  941.03125                    932.28125           941.28125
 932.04375                  941.04375                    932.29375           941.29375
 932.05625                  941.05625                    932.30625           941.30625
 932.06875                  941.06875                    932.31875           941.31875
 932.08125                  941.08125                    932.33125           941.33125
 932.09375                  941.09375                    932.34375           941.34375
 932.10625                  941.10625                    932.35625           941.35625
 932.11875                  941.11875                    932.36875           941.36875
 932.13125                  941.13125                    932.38125           941.38125
 932.14375                  941.14375                    932.39375           941.39375
 932.15625                  941.15625                    932.40625           941.40625
 932.16875                  941.16875                    932.41875           941.41875
 932.18125                  941.18125                    932.43125           941.43125

47 CFR 22.621 (enhanced display)                                                         page 54 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                       47 CFR 22.621
Public Mobile Services

 932.19375                  941.19375                   932.44375          941.44375
 932.20625                  941.20625                   932.45625          941.45625
 932.21875                  941.21875                   932.46875          941.46875
 932.23125                  941.23125                   932.48125          941.48125
 932.24375                  941.24375                   932.49375          941.49375
                                   UHF Channels in Specified Urban Areas
                                                   Boston
 470.0125                   473.0125                    482.0125           485.0125
 470.0375                   473.0375                    482.0375           485.0375
 470.0625                   473.0625                    482.0625           485.0625
 470.0875                   473.0875                    482.0875           485.0875
 470.1125                   473.1125                    482.1125           485.1125
 470.1375                   473.1375                    482.1375           485.1375
 470.1625                   473.1625                    482.1625           485.1625
 470.1875                   473.1875                    482.1875           485.1875
 470.2125                   473.2125                    482.2125           485.2125
 470.2375                   473.2375                    482.2375           485.2375
 470.2625                   473.2625                    482.2625           485.2625
 470.2875                   473.2875                    482.2875           485.2875
                                              Chicago, Cleveland
 470.0125                   473.0125                    476.0125           479.0125
 470.0375                   473.0375                    476.0375           479.0375
 470.0625                   473.0625                    476.0625           479.0625
 470.0875                   473.0875                    476.0875           479.0875
 470.1125                   473.1125                    476.1125           479.1125
 470.1375                   473.1375                    476.1375           479.1375
 470.1625                   473.1625                    476.1625           479.1625
 470.1875                   473.1875                    476.1875           479.1875
 470.2125                   473.2125                    476.2125           479.2125
 470.2375                   473.2375                    476.2375           479.2375
 470.2625                   473.2625                    476.2625           479.2625
 470.2875                   473.2875                    476.2875           479.2875
                                    New York-Northeastern New Jersey
 470.0125                   470.1625                    476.0125           476.1625
 470.0375                   470.1875                    476.0375           476.1875
 470.0625                   470.2125                    476.0625           476.2125
 470.0875                   470.2375                    476.0875           476.2375
 470.1125                   470.2625                    476.1125           476.2625
 470.1375                   470.2875                    476.1375           476.2875
                                              Dallas-Forth Worth
 482.0125                   482.1625                    485.0125           485.1625

47 CFR 22.621 (enhanced display)                                                       page 55 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                           47 CFR 22.621
Public Mobile Services

 482.0375                   482.1875                 485.0375   485.1875
 482.0625                   482.2125                 485.0625   485.2125
 482.0875                   482.2375                 485.0875   485.2375
 482.1125                   482.2625                 485.1125   485.2625
 482.1375                   482.2875                 485.1375   485.2875
                                                Detroit
 476.0125                   479.0125                 482.0125   485.0125
 476.0375                   479.0375                 482.0375   485.0375
 476.0625                   479.0625                 482.0625   485.0625
 476.0875                   479.0875                 482.0875   485.0875
 476.1125                   479.1125                 482.1125   485.1125
 476.1375                   479.1375                 482.1375   485.1375
 476.1625                   479.1625                 482.1625   485.1625
 476.1875                   479.1875                 482.1875   485.1875
 476.2125                   479.2125                 482.2125   485.2125
 476.2375                   479.2375                 482.2375   485.2375
 476.2625                   479.2625                 482.2625   485.2625
 476.2875                   479.2875                 482.2875   485.2875
                                               Houston
 488.1625                   491.1625                 488.2375   491.2375
 488.1875                   491.1875                 488.2625   491.2625
 488.2125                   491.2125                 488.2875   491.2875
                                              Los Angeles
 470.0125                   473.0125                 506.0625   509.0625
 470.0375                   473.0375                 506.0875   509.0875
 506.0125                   509.0125                 506.1125   509.1125
 506.0375                   509.0375
                                                Miami
 470.0125                   470.1625                 473.0125   473.1625
 470.0375                   470.1875                 473.0375   473.1875
 470.0625                   470.2125                 473.0625   473.2125
 470.0875                   470.2375                 473.0875   473.2375
 470.1125                   470.2625                 473.1125   473.2625
 470.1375                   470.2875                 473.1375   473.2875
                                              Philadelphia
 500.0125                   503.0125                 506.0125   509.0125
 500.0375                   503.0375                 506.0375   509.0375
 500.0625                   503.0625                 506.0625   509.0625
 500.0875                   503.0875                 506.0875   509.0875
 500.1125                   503.1125                 506.1125   509.1125
 500.1375                   503.1375                 506.1375   509.1375

47 CFR 22.621 (enhanced display)                                           page 56 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 22.621
Public Mobile Services

 500.1625                   503.1625                   506.1625                    509.1625
 500.1875                   503.1875                   506.1875                    509.1875
 500.2125                   503.2125                   506.2125                    509.2125
 500.2375                   503.2375                   506.2375                    509.2375
 500.2625                   503.2625                   506.2625                    509.2625
 500.2875                   503.2875                   506.2875                    509.2875
                                                 Pittsburgh
 470.0125                   470.1625                   473.0125                    473.1625
 470.0375                   470.1875                   473.0375                    473.1875
 470.0625                   470.2125                   473.0625                    473.2125
 470.0875                   470.2375                   473.0875                    473.2375
 470.1125                   470.2625                   473.1125                    473.2625
 470.1375                   470.2875                   473.1375                    473.2875
                                               San Francisco
 482.0125                   485.0125                   488.0125                    491.0125
 482.0375                   485.0375                   488.0375                    491.0375
 482.0625                   485.0625                   488.0625                    491.0625
 482.0875                   485.0875                   488.0875                    491.0875
 482.1125                   485.1125                   488.1125                    491.1125
 482.1375                   485.1375                   488.1375                    491.1375
 482.1625                   485.1625                   488.1625                    491.1625
 482.1875                   485.1875                   488.1875                    491.1875
 482.2125                   485.2125                   488.2125                    491.2125
 482.2375                   485.2375                   488.2375                    491.2375
 482.2625                   485.2625                   488.2625                    491.2625
 482.2875                   485.2875                   488.2875                    491.2875
                                              Washington, DC
 488.0125                   491.0125                   494.0125                    497.0125
 488.0375                   491.0375                   494.0375                    497.0375
 488.0625                   491.0625                   494.0625                    497.0625
 488.0875                   491.0875                   494.0875                    497.0875
 488.1125                   491.1125                   494.1125                    497.1125
 488.1375                   491.1375                   494.1375                    497.1375
 488.1625                   491.1625                   494.1625                    497.1625
 488.1875                   491.1875                   494.1875                    497.1875
 488.2125                   491.2125                   494.2125                    497.2125
 488.2375                   491.2375                   494.2375                    497.2375
 488.2625                   491.2625                   494.2625                    497.2625
 488.2875                   491.2875                   494.2875                    497.2875

[59 FR 59507, Nov. 17, 1994; 60 FR 9890, Feb. 22, 1995, as amended at 61 FR 54099, Oct. 17, 1996; 65 FR 17448, Apr. 3, 2000]

47 CFR 22.621 (enhanced display)                                                                                  page 57 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                           47 CFR 22.623
Public Mobile Services

§ 22.623 System configuration.
This section requires a minimum configuration for point-to-multipoint systems using the channels listed in §
22.621.

     (a) 928–960 MHz. The channels may be assigned, individually or paired, only to fixed transmitters in a system
         that controls at least four public mobile base transmitters that transmit on the same channel. If a
         932–933 MHz channel and a 941–942 MHz channel are assigned as a pair, the 941–942 MHz channel
         must be assigned only to control transmitters; the 932–933 MHz channel may be assigned to control or
         fixed relay transmitters.

     (b) 470–512 MHz. These channels may be assigned only individually (unpaired), to control transmitters that
         directly control at least four public mobile base transmitters that transmit on the same channel. Fixed
         relay transmitters are not authorized.

     (c) Selection and assignment. The FCC selects and assigns a channel when granting applications for
         authorization to operate a new station to transmit in the 470–512, 932–933 and 941–942 MHz frequency
         ranges. Applicants having a preference may request the assignment of a specific channel or channel pair,
         but the FCC may in some cases be unable to satisfy such requests.

§ 22.625 Transmitter locations.
This section governs where point-to-multipoint transmitters on the channels listed in § 22.621 may be located.

     (a) 928–960 MHz. In this frequency range, the required minimum distance separation between co-channel
         fixed transmitters is 113 kilometers (70 miles).

     (b) 470–512 MHz. The purpose of the rule in paragraph (b)(1) of this section is to define the areas in which
         the 470–512 MHz channels are allocated for public mobile use. The purpose of the rules in paragraphs
         (b)(2) and (b)(3) of this section is to reduce the likelihood that interference to television reception from
         public mobile operations on these channels will occur.

           (1) Control transmitter locations. Control transmitter locations must be within 80 kilometers (50 miles)
               of the designated locations in this paragraph.

                                      Urban area                           N. latitude             W. longitude
                 Boston, MA                                                     42°21′24.4″                71°03′22.2″
                 Chicago, IL                                                    41°52′28.1″                87°38′22.2″
                 Cleveland, OH                                                  41°29′51.2″                81°41′49.5″
                 Dallas, TX                                                     32°47′09.5″                96°47′38.0″
                 Detroit, MI                                                    42°19′48.1″                83°02′56.7″
                 Houston, TX                                                    29°45′26.8″                95°21′37.8″
                 Los Angeles, CA                                                34°03′15.0″                18°14′31.3″
                 Miami, FL                                                      25°46′38.6″                80°11′31.2″
                 New York, NY                                                     40°45′6.4″               73°59′37.5″
                 Philadelphia, PA                                               39°56′58.4″                75°09′19.6″
                 Pittsburgh, PA                                                 40°26′19.2″                79°59′59.2″
                 San Francisco-Oakland, CA                                      37°46′38.7″              122°24′43.9″

47 CFR 22.625(b)(1) (enhanced display)                                                                     page 58 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.625(b)(2)
Public Mobile Services

                                      Urban area                               N. latitude             W. longitude
                 Washington, DC                                                     38°53′51.4″                 77°00′31.9″

                NOTE: Coordinates are referenced to North American Datum 1983 (NAD 83).

           (2) Protection from intermodulation interference. Control transmitter locations must be at least 1.6
               kilometers (1 mile) from the main transmitter locations of all TV stations transmitting on TV
               channels separated by 2, 3, 4, 5, 7, or 8 TV channels from the TV channel containing the frequencies
               on which the control station will transmit. This requirement is intended to reduce the likelihood of
               intermodulation interference.

           (3) Co-channel protection from control transmitters with high antennas. This paragraph applies only to
               control transmitters that utilize an antenna height of more than 152 meters (500 feet) above average
               terrain. The distance between the location of such a control transmitter and the applicable protected
               TV station location specified in this paragraph must equal or exceed the sum of the distance from
               the control transmitter location to the radio horizon in the direction of the specified location and 89
               kilometers (55 miles—representing the distance from the main transmitter location of the TV station
               to its Grade B contour in the direction of the control transmitter). The protected TV station locations
               in this paragraph are the locations of record as of September 1974, and these do not change even
               though the TV stations may have been subsequently relocated.

                 (i)   The protected TV station locations are as follows:

                              Control transmitter frequency range                    Protected TV station location
                        470–476 MHz                                        Washington, DC 38°57′17″ 77°00′17″
                        476–482 MHz                                        Lancaster, PA 40°15′45″ 76°27′49″

                 (ii) The distance to the radio horizon is calculated using the following formula:

     where

     d is the distance to the radio horizon in kilometers

     h is the height of the antenna center of radiation above ground level in meters

[59 FR 59507, Nov. 17, 1994, as amended at 63 FR 68946, Dec. 14, 1998, 70 FR 19309, Apr. 13, 2005]

§ 22.627 Effective radiated power limits.
The effective radiated power (ERP) of transmitters operating on the channels listed in § 22.621 must not exceed the
limits in this section.

     (a) Maximum ERP. The ERP must not exceed the applicable limits in this paragraph under any circumstances.

                           Frequency range (MHz)                                 Maximum ERP (watts)
             470–512                                                                                            1000

47 CFR 22.627(a) (enhanced display)                                                                             page 59 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                               47 CFR 22.627(b)
Public Mobile Services

                           Frequency range (MHz)                                 Maximum ERP (watts)
            928–929                                                                                                 50
            932–933                                                                                                 30
            941–942                                                                                                600
            952–960                                                                                                150

     (b) 470–512 MHz limits. The purpose of the rules in paragraphs (b)(1) through (b)(3) of this section is to
         reduce the likelihood that interference to television receiption from public mobile operations on these
         channels will occur. The protected TV station locations specified in this section are the locations of
         record as of September 1974, and these do not change even though the TV stations may have been
         subsequently relocated.

           (1) Co-channel protection. The ERP of control transmitters must not exceed the limits in the tables in
               paragraphs (b)(1)(ii) and (b)(1)(iii) of this section. The limits depend upon the height above average
               terrain of the control transmitter antenna and the distance between the control transmitter and the
               nearest protected TV station location in paragraph (b)(1)(i) of this section.

                 (i)   The protected TV station locations are as follows (all coordinates are referenced to North
                       American Datum 1983 (NAD83)):

                         Control transmitter frequency range                   Protected TV station location
                        470–476 MHz                            Jacksonville, IL, 39°45′52.2″ N. Lat. 90°30′29.5″ W. Long.
                                                               Mt. Pleasant, MI, 43°34′24.1″ N. Lat. 84°46′21.1″ W. Long.
                        476–482 MHz                            Oxford, OH, 39°30′26.2″ N. Lat. 84°44′8.8″ W. Long.
                        482–488 MHz                            Washington, DC, 38°57′17.4″ N. Lat. 77°00′15.9″ W. Long.
                        488–494 MHz                            Champaign, IL, 40°04′11.1″ N. Lat. 87°54′45.1″ W. Long.
                        494–500 MHz                            Madison, WI, 43°03′01.0″ N. Lat. 89°29′15.4″ W. Long.
                        500–506 MHz                            Parkersburg, WV, 39°20′50.3″ N. Lat. 81°33′55.5″ W. Long.
                        506–512 MHz                            Fort Wayne, IN, 41°05′35.2″ N. Lat. 85°10′41.9″ W. Long.
                                                               Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.
                                                               South Bend, IN, 41°36′26.2″ N. Lat. 86°27′48.1″ W. Long.
                                                               Philadelphia, PA, 40°02′30.4″ N. Lat. 75°14′22.6″ W. Long.
                                                               None.
                                                               Johnstown, PA, 40°19′47.3″ N. Lat. 78°53′44.1″ W. Long.
                                                               Washington, DC, 38°57′49.4″ N. Lat. 77°06′16.9″ W. Long.
                                                               Waterbury, CT, 41°31′2.3″ N. Lat. 73°00′58.4″ W. Long.

                 (ii) Table E–3 and E–4 apply to control transmitters in the New York-Northeastern New Jersey and
                      Cleveland urban areas that transmit on channels in the 476–482 MHz range and to control
                      transmitters in the Detroit urban area that transmit on channels in the 482–488 MHz range.

                (iii) Tables E–5 and E–6 apply to all control transmitters except those to which Tables E–3 and E–4
                      apply.

47 CFR 22.627(b)(1)(iii) (enhanced display)                                                                      page 60 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.627(b)(2)
Public Mobile Services

           (2) Adjacent channel protection. The ERP of control transmitters must not exceed the limits in Table
               E–7. The limits depend upon the height above average terrain of the control transmitter antenna and
               the distance between the control transmitter and the nearest protected TV station location listed in
               this paragraph. The protected TV station locations are as follows (all coordinates are referenced to
               North American Datum 1983 (NAD83)):

                    Control transmitter frequency                                                                    TV
                                                                   Protected TV station location
                                range                                                                              channel
                 470–476 MHz                          Hanover, NH, 43°42′30.3″ N. Lat. 72°09′14.3″ W. Long.              (15)
                                                      Madison, WI, 43°03′01.0″ N. Lat. 89°29′15.4″ W. Long.              (15)
                                                      Champaign, IL, 40°04′11.1″ N. Lat. 87°54′45.1″ W. Long.            (15)
                                                      San Diego, CA, 32°41′48.2″ N. Lat. 116°56′13.1″ W.                 (15)
                                                      Long.
                                                      Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.            (15)
                                                      Parkersburg, WV, 39°20′50.3″ N. Lat. 81°33′55.5″ W.                (15)
                                                      Long.
                 476–482 MHz                          South Bend, IN, 41°36′26.2″ N. Lat. 86°27′48.1″ W. Long.           (16)
                                                      Pittsburgh, PA, 40°26′46.2″ N. Lat. 79°57′50.2″ W. Long.           (16)
                                                      Mt. Pleasant, MI, 43°34′24.1″ N. Lat. 84°46′21.1″ W.               (14)
                                                      Long.
                                                      Scranton, PA, 41°10′58.3″ N. Lat. 75°52′19.7″ W. Long.             (16)
                 482–488 MHz                          Hanover, NH, 43°42′30.3″ N. Lat. 72°09′14.3″ W. Long.              (15)
                                                      Fort Wayne, IN, 41°05′35.2″ N. Lat. 85°10′41.9″ W. Long.           (15)
                 488–494 MHz                          Salisbury, MD, 38°24′15.4″ N. Lat. 75°34′43.7″ W. Long.            (16)
                 494–500 MHz                          Philadelphia, PA, 40°02′30.4″ N. Lat. 75°14′22.6″ W.               (17)
                                                      Long.
                 500–506 MHz                          Washington, DC, 38°57′17.4″ N. Lat. 77°00′15.9″ W.                 (20)
                                                      Long.
                 506–512 MHz                          Harrisburg, PA, 40°20′44.3″ N. Lat. 76°52′07.9″ W. Long.           (21)

     (c) Los Angeles area. This paragraph applies only to control transmitters in the Los Angeles urban area that
         utilize an antenna height of 457 or more meters (1500 or more feet) above mean sea level. The ERP of
         such transmitters must not exceed the following limits:

                                 Antenna height                                              ERP
                              AMSL in meters (feet)                                        (Watts)
 457 (1500) to 610 (2000)                                                                               155
 611 (2001) to 762 (2500)                                                                               100
 763 (2501) to 914 (3000)                                                                                  70
 915 (3001) to 1067 (3500)                                                                                 50
 1068 (3501) to 1219 (4000)                                                                                40
 1220 (4001) to 1372 (4500)                                                                                30
 1373 (4501) and above                                                                                     25

47 CFR 22.627(c) (enhanced display)                                                                               page 61 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                              47 CFR 22.627(c)
Public Mobile Services

                        Table E–3—Maximum ERP (Watts) for Control Transmitters (HAAT 152 Meters or Less)

                                                                 Antenna height above average terrain in meters (feet)
Distance to protected TV station in kilometers (miles)    15      30    46    61    76    91   107   122   137   152
                                                         (50)   (100) (150) (200) (250) (300) (350) (400) (450) (500)
209 (130)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000    1000
201 (125)                                                1000   1000   1000   1000   1000   1000    1000    850    750     725
193 (120)                                                1000   1000   1000   1000    900    750     675    600    550     500
185 (115)                                                1000   1000    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
See § 22.627(b)(1)(ii). This table is for antenna heights of 152 meters (500 feet) or less above average terrain. For antenna heights between those in the
table, use the next higher antenna height. For distances between those in the table, use the next lower distance.

47 CFR 22.627(c) (enhanced display)                                                                                                              page 62 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.627(c)
Public Mobile Services

   Table E–4—Maximum ERP (Watts) for Control Transmitters (HAAT More
                         Than 152 Meters)

                                                Antenna height above average terrain in meters (feet)
     Distance to protected TV station in
                                               152      305        457       610        762       914
             kilometers (miles)
                                              (500)   (1000)     (1500)    (2000)     (2500)    (3000)
 209 (130)                                     1000       447        219       117         71           46
 193 (120)                                      500       209         95        50         30           19
 177 (110)                                      225         91        35        19         11            8
 161 (100)                                      100         30        10          5         3            2
 153 (95)                                        50         13         5          3         2            1

See § 22.627(b)(1)(ii). This table is for antenna heights of more than 152 meters (500 feet) above
average terrain. For intermediate values of height and/or distance, use linear interpolation to obtain
the maximum permitted ERP.

47 CFR 22.627(c) (enhanced display)                                                                            page 63 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                              47 CFR 22.627(c)
Public Mobile Services

                        Table E–5—Maximum ERP (Watts) for Control Transmitters (HAAT 152 Meters or Less)

                                                                 Antenna Height Above Average Terrain in meters (feet)
Distance to protected TV station in kilometers (miles)    15      30    46    61    76    91   107   122   137   152
                                                         (50)   (100) (150) (200) (250) (300) (350) (400) (450) (500)
261 (162)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000   1000
257 (160)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000    800
249 (155)                                                1000   1000   1000   1000   1000    875     775    700    625    575
241 (150)                                                1000   1000    950    775    725    625     550    500    450    400
233 (145)                                                 850    750    650    575    500    440     400    350    320    300
225 (140)                                                 600    575    465    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
See § 22.627(b)(1)(iii). This table applies for antenna heights of 152 meters (500 feet) or less above average terrain. For antenna heights between those in
the table, use the next higher antenna height. For distances between those in the table, use the next lower distance.

47 CFR 22.627(c) (enhanced display)                                                                                                             page 64 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.627(c)
Public Mobile Services

   Table E–6—Maximum ERP (Watts) for Control Transmitters (HAAT More
                         Than 152 Meters)

                                                Antenna height above average terrain in meters (feet)
     Distance to protected TV station in
                                               152      305        457       610        762       914
             kilometers (miles)
                                              (500)   (1000)     (1500)    (2000)     (2500)    (3000)
 261 (162)                                     1000       501        282       170        110           71
 241 (150)                                      400       209        110        60         36           23
 225 (140)                                      225       102         50        28         16           10
 209 (130)                                      100         48        21        11          7            5
 193 (120)                                       50         19         9          5         3            2

See § 22.627(b)(1)(iii). This table is for antenna heights of more than 152 meters (500 feet) above
average terrain. For intermediate values of height and/or distance, use linear interpolation to obtain
the maximum permitted ERP.

47 CFR 22.627(c) (enhanced display)                                                                            page 65 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                             47 CFR 22.627(c)
Public Mobile Services

                                              Table E–7—Maximum ERP (Watts) for Control Transmitters

                                                                Antenna height above average terrain in meters (feet)
Distance to protected TV station in kilometers (miles)     30    46    61    76    91   107   122   137   152
                                                         (100) (150) (200) (250) (300) (350) (400) (450) (500)
108 (67)                                                 1000     1000   1000   1000    1000   1000    1000   1000      1000
106 (66)                                                 1000     1000   1000   1000    1000   1000    1000   1000       750
105 (65)                                                 1000     1000   1000   1000    1000   1000     825    650       600
103 (64)                                                 1000     1000   1000   1000    1000    775     625    500       400
101 (63)                                                 1000     1000   1000   1000     440    400     350    320       300
100 (62)                                                 1000     1000   1000     525    375    250     200    150       125
98 (61)                                                  1000      700    450     250    200    125     100     75        50
97 (60)                                                  1000      425    225     125    100      75     50
See § 22.627(b)(2). This table applies to control transmitters in the Boston, Chicago, Cleveland, Detroit, Los Angeles, New York-Northeastern New Jersey,
Philadelphia, Pittsburgh and Washington, DC urban areas. This table is for antenna heights of 152 meters (500 feet) or less above average terrain. For
antenna heights between those in the table, use the next higher antenna height. For distances between those in the table, use the next lower distance.

47 CFR 22.627(c) (enhanced display)                                                                                                            page 66 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.651
Public Mobile Services

[59 FR 59507, Nov. 17, 1994; 60 FR 9890, Feb. 22, 1995, as amended at 63 FR 68946, Dec. 14, 1998]

                                     470–512 MHZ TRUNKED MOBILE OPERATION

§ 22.651 470–512 MHz channels for trunked mobile operation.
The following channels are allocated for assignment to transmitters providing trunked public mobile service within
the specified urban areas. All channels have a bandwidth of 20 kHz and are designated by their center frequencies
in MegaHertz.

                                                  Houston
 488.0125                   491.0125                      488.0875                491.0875
 488.0375                   491.0375                      488.1125                491.1125
 488.0625                   491.0625                      488.1375                491.1375
                                       New York-Northern New Jersey
 473.0125                   479.0125                      473.1625                479.1625
 473.0375                   479.0375                      473.1875                479.1875
 473.0625                   479.0625                      473.2125                479.2125
 473.0875                   479.0875                      473.2375                479.2375
 473.1125                   479.1125                      473.2625                479.2625
 473.1375                   479.1375                      473.2875                479.2875

[59 FR 59507, Nov. 17, 1994; 60 FR 9891, Feb. 22, 1995]

§ 22.653 Eligibility.
Only licensees already authorized to provide trunked mobile service or their successors in interest are eligible to
apply for additional use of these channels for trunked mobile service, and then only in the urban areas already
authorized.

§ 22.657 Transmitter locations.
The purpose of the rules in paragraphs (a) and (b) of this section is to define the areas in which the 470–512 MHz
channels are allocated for public mobile use. The purpose of the rules in paragraphs (c) through (f) of this section is
to reduce the likelihood that interference to television reception from public mobile operations on these channels
will occur. The protected TV station locations specified in paragraphs (d), (e)(1) and (f) of this section are the
locations of record as of September 1974, and these do not change even though the TV stations may have been
subsequently relocated.

47 CFR 22.657 (enhanced display)                                                                          page 67 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                47 CFR 22.657(a)
Public Mobile Services

     (a) Base transmitter locations. Base transmitter locations must be within 80 kilometers (50 miles) of the
         designated locations in this paragraph. Mobile transmitters must not be operated at locations more than
         129 kilometers (80 miles) from the designated locations in this paragraph. Note: All coordinates are
         referenced to North American Datum 1983 (NAD83).

                             Urban area                             N. latitude                  W. longitude
            Houston, TX                                                    29°45′26.8″                       95°21′37.8″
            New York, NY-NE NJ                                             40°45′06.4″                       73°59′37.5″

     (b) Mobile area of operation. Mobile transmitters must not be operated at locations more than 48 kilometers
         (30 miles) from all associated base stations.

     (c) Protection from intermodulation interference. Base transmitter locations must be at least 1.6 kilometers (1
         mile) from the current main transmitter locations of all TV stations transmitting on TV channels separated
         by 2, 3, 4, 5, 7, or 8 TV channels from the TV channel containing the frequencies on which the base station
         will transmit. This requirement is intended to reduce the likelihood of intermodulation interference.

     (d) Adjacent channel protection from mobile transmitters. Base transmitter locations must be at least 145
         kilometers (90 miles) from the applicable protected TV station locations specified in this paragraph. This
         requirement is intended to provide a 0 dB minimum desired to undesired signal strength ratio at the Grade
         B contour of an adjacent channel TV station. Note: All coordinates are referenced to North American
         Datum 1983 (NAD83).

            Control transmitter frequency range               Protected TV station location                  TV channel
            470–476 MHz                           Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.           (15)
            476–482 MHz                           Scranton, PA, 41°10′58.3″ N. Lat. 75°52′19.7″ W. Long.            (16)

     (e) Co-channel protection from mobile transmitters. Base transmitter locations must be at least the distance
         specified in paragraph (e)(2) of this section from the applicable protected TV station locations specified
         in paragraph (e)(1) of this section. This requirement is intended to provide a 40 dB minimum desired to
         undesired signal strength ratio at the Grade B contour of a co-channel TV station.

           (1) The protected TV station locations are as follows (all coordinates are referenced to North American
               Datum 1983 (NAD83)):

                    Control transmitter frequency range                      Protected TV station location
                 470–476 MHz                                Washington, DC, 38°57′17.4″ N. Lat. 77°00′15.9″ W. Long.
                 476–482 MHz                                Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.

           (2) The required minimum distance depends upon the effective radiated power (ERP) of the most
               powerful mobile transmitter(s) in the system:

                                                                                           Minimum distance
                                  Mobile unit ERP (watts)
                                                                                      Kilometers                   Miles
                 60                                                                                    193                 (120)
                 50                                                                                    185                 (115)

47 CFR 22.657(e)(2) (enhanced display)                                                                            page 68 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                  47 CFR 22.657(f)
Public Mobile Services

                                                                                               Minimum distance
                                   Mobile unit ERP (watts)
                                                                                         Kilometers                 Miles
                 25                                                                                      177              (110)
                 10                                                                                      169              (105)
                 5                                                                                       161              (100)

     (f) Co-channel protection from base transmitters with high antennas. This paragraph applies only to base
         transmitter locations in the New York-Northeastern New Jersey urban area that utilize an antenna height
         of more than 152 meters (500 feet) above average terrain. The distance between the location of such a
         base transmitter and the applicable protected TV station location specified in this paragraph must equal
         or exceed the sum of the distance from the base transmitter location to the radio horizon in the direction
         of the specified location and 89 kilometers (55 miles—representing the distance from the main
         transmitter location of the TV station to its Grade B contour in the direction of the base transmitter). The
         distance to the radio horizon is calculated as follows:

     Where d is the distance to the radio horizon in kilometers h is the height of the antenna center of radiation
     above ground level in meters

           Note: All coordinates are referenced to North American Datum 1983 (NAD83)):

   Control transmitter frequency range                         Protected TV station location
 470–476 MHz                                  Washington, DC, 38°57′17.4″ N. Lat. 77°00′15.9″ W. Long.
 476–482 MHz                                  Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.

     (g) The FCC may waive specific distance separation requirements of paragraphs (d) through (f) of this
         section if the applicant submits an engineering analysis which demonstrates that terrain effects and/or
         operation with less effective radiated power would satisfy the applicable minimum desired to undesired
         signal strength ratios at the Grade B contours of the protected TV stations. For this purpose, the Grade B
         contour of a TV station is deemed to be a circle with a 89 kilometer (55 mile) radius, centered on the
         protected TV station location, and along which the median TV signal field strength is 64 dBµV/m. In any
         showing intended to demonstrate compliance with the minimum desired to undesired signal ratio
         requirements of this section, all predicted field strengths must have been determined using the UHF TV
         propagation curves contained in part 73 of this chapter.

[59 FR 59507, Nov. 17, 1994, as amended at 63 FR 68947, Dec. 14, 1998]

§ 22.659 Effective radiated power limits.
The purpose of the rules in this section, which limit effective radiated power (ERP), is to reduce the likelihood that
interference to television reception from public mobile operations on these channels will occur. The protected TV
station locations specified in this section are the locations of record as of September 1974, and these do not
change even though the TV stations may have been subsequently relocated.

47 CFR 22.659 (enhanced display)                                                                                    page 69 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                   47 CFR 22.659(a)
Public Mobile Services

     (a) Maximum ERP. The ERP of base transmitters must not exceed 100 Watts under any circumstances. The
         ERP of mobile transmitters must not exceed 60 Watts under any circumstances.

     (b) Co-channel protection from base transmitters. The ERP of base transmitters in the New York-Northeastern
         New Jersey urban area must not exceed the limits in the tables referenced in paragraphs (b)(2) and (b)(3)
         of this section. The limits depend upon the height above average terrain of the base transmitter antenna
         and the distance between the base transmitter and the nearest protected TV station location in paragraph
         (b)(1) of this section.

           (1) The protected TV station locations are as follows (all coordinates are referenced to North American
               Datum 1983 (NAD83)):

                    Control transmitter frequency range                        Protected TV station location
                 470–476 MHz                                  Washington, DC, 38°57′17.4″ N. Lat. 77°00′15.9″ W. Long.
                 476–482 MHz                                  Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long.

           (2) Tables E–8 and E–9 of this section apply to base transmitters in the New York-Northeastern New
               Jersey urban area that transmit on channels in the 476–482 MHz range.

           (3) Tables E–10 and E–11 of this section apply to base transmitters in the New York-Northeastern New
               Jersey urban area that transmit on channels in the 470–476 MHz range.

     (c) Adjacent channel protection from base transmitters. The ERP of base transmitters must not exceed the
         limits in Table E–12 of this section. The limits depend upon the height above average terrain of the base
         transmitter antenna and the distance between the base transmitter and the nearest protected TV station
         location specified in paragraph (c)(1) of this section.

           (1) The protected TV station locations are as follows (all coordinates are referenced to North American
               Datum 1983 (NAD83)):

                 Control transmitter frequency range                  Protected TV station location                  TV channel
                 470–476 MHz                              Hanover, NH, 43°42′30.3″ N. Lat. 72°09′14.3″ W. Long              (15)
                 476–482 MHz                              Lancaster, PA, 40°15′45.3″ N. Lat. 76°27′47.9″ W. Long            (15)
                 482–488 MHz
                                                          Scranton, PA, 41°10′58.3″ N. Lat. 75°52′19.7″ W. Long             (16)
                                                          Hanover, NH, 43°42′30.3″ N. Lat. 72°09′14.3″ W. Long              (15)

                NOTE: Coordinates are referenced to North American Datum 1983 (NAD83).

           (2) Table E–12 of this section applies to base transmitters in the New York-Northeastern New Jersey
               urban area.

47 CFR 22.659(c)(2) (enhanced display)                                                                               page 70 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                           47 CFR 22.659(c)(2)
Public Mobile Services

                          Table E–8—Maximum ERP (Watts) for Base Transmitters (HAAT 152 Meters or Less)

                                                                 Antenna height above average terrain in meters (feet)
Distance to protected TV station in kilometers (miles)    15      30    46    61    76    91   107   122   137   152
                                                         (50)   (100) (150) (200) (250) (300) (350) (400) (450) (500)
209 (130)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000    1000
201 (125)                                                1000   1000   1000   1000   1000   1000    1000    850    750     725
193 (120)                                                1000   1000   1000   1000    900    750     675    600    550     500
185 (115)                                                1000   1000    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
See § 22.659(b)(2). This table is for antenna heights of 152 meters (500 feet) or less above average terrain. For antenna heights between those in the table,
use the next higher antenna height. For distances between those in the table, use the next lower distance.

47 CFR 22.659(c)(2) (enhanced display)                                                                                                           page 71 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.659(c)(2)
Public Mobile Services

 Table E–9—Maximum ERP (Watts) for Base Transmitters (HAAT More Than
                           152 Meters)

                                                Antenna height above average terrain in meters (feet)
     Distance to protected TV station in
                                               152      305        457       610        762       914
             kilometers (miles)
                                              (500)   (1000)     (1500)    (2000)     (2500)    (3000)
 209 (130)                                     1000       447        219       117         71           46
 193 (120)                                      500       209         95        50         30           19
 177 (110)                                      225         91        35        19         11            8
 161 (100)                                      100         30        10          5         3            2
 153 (95)                                        50         13         5          3         2            1

See § 22.659(b)(2). This table is for antenna heights of more than 152 meters (500 feet) above
average terrain. For intermediate values of height and/or distance, use linear interpolation to obtain
the maximum permitted ERP.

47 CFR 22.659(c)(2) (enhanced display)                                                                            page 72 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                          47 CFR 22.659(c)(2)
Public Mobile Services

                         Table E–10—Maximum ERP (Watts) for Base Transmitters (HAAT 152 Meters or Less)

                                                                 Antenna height above average terrain in meters (feet)
Distance to protected TV station in kilometers (miles)    15      30    46    61    76    91   107   122   137   152
                                                         (50)   (100) (150) (200) (250) (300) (350) (400) (450) (500)
261 (162)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000    1000
257 (160)                                                1000   1000   1000   1000   1000   1000    1000   1000   1000     800
249 (155)                                                1000   1000   1000   1000   1000    875     775    700    625     575
241 (150)                                                1000   1000    950    775    725    625     550    500    450     400
233 (145)                                                 850    750    650    575    500    440     400    350    320     300
225 (140)                                                 600    575    465    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
See § 22.659(b)(3). This table applies for antenna heights of 152 meters (500 feet) or less above average terrain. For antenna heights between those in the
table, use the next higher antenna height. For distances between those in the table, use the next lower distance.

47 CFR 22.659(c)(2) (enhanced display)                                                                                                         page 73 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.659(c)(2)
Public Mobile Services

Table E–11—Maximum ERP (Watts) for Base Transmitters (HAAT More Than
                          152 Meters)

                                                Antenna height above average terrain in meters (feet)
     Distance to protected TV station in
                                               152      305        457       610        762       914
             kilometers (miles)
                                              (500)   (1000)     (1500)    (2000)     (2500)    (3000)
 261 (162)                                     1000       501        282       170        110           71
 241 (150)                                      400       209        110        60         36           23
 225 (140)                                      225       102         50        28         16           10
 209 (130)                                      100         48        21        11          7            5
 193 (120)                                       50         19         9          5         3            2

See § 22.659(b)(3). This table is for antenna heights of more than 152 meters (500 feet) above
average terrain. For intermediate values of height and/or distance, use linear interpolation to obtain
the maximum permitted ERP.

47 CFR 22.659(c)(2) (enhanced display)                                                                            page 74 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                                         47 CFR 22.659(c)(2)
Public Mobile Services

                                               Table E–12—Maximum ERP (Watts) for Base Transmitters

                                                                Antenna height above average terrain in meters (feet)
Distance to protected TV station in kilometers (miles)     30    46    61    76    91   107   122   137   152
                                                         (100) (150) (200) (250) (300) (350) (400) (450) (500)
108 (67)                                                 1000     1000   1000   1000    1000   1000    1000   1000      1000
106 (66)                                                 1000     1000   1000   1000    1000   1000    1000   1000       750
105 (65)                                                 1000     1000   1000   1000    1000   1000     825    650       600
103 (64)                                                 1000     1000   1000   1000    1000    775     625    500       400
101 (63)                                                 1000     1000   1000   1000     440    400     350    320       300
100 (62)                                                 1000     1000   1000     525    375    250     200    150       125
98 (61)                                                  1000      700    450     250    200    125     100     75        50
97 (60)                                                  1000      425    225     125    100      75     50
See § 22.659(c)(2). This table applies to base transmitters in the New York-Northeastern New Jersey urban areas. This table is for antenna heights of 152
meters (500 feet) or less above average terrain. For antenna heights between those in the table, use the next higher antenna height. For distances between
those in the table, use the next lower distance.

47 CFR 22.659(c)(2) (enhanced display)                                                                                                        page 75 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                            47 CFR 22.701
Public Mobile Services

[59 FR 59507, Nov. 17, 1994, as amended at 63 FR 68947, Dec. 14, 1998]

Subpart F—Rural Radiotelephone Service
§ 22.701 Scope.
The rules in this subpart govern the licensing and operation of stations and systems in the Rural Radiotelephone
Service. The licensing and operation of these stations and systems is also subject to rules elsewhere in this part
that apply generally to the Public Mobile Services. In case of conflict, however, the rules in this subpart govern.

§ 22.702 Eligibility.
Existing and proposed communications common carriers are eligible to hold authorizations to operate conventional
central office, interoffice and rural stations in the Rural Radiotelephone Service. Subscribers are also eligible to hold
authorizations to operate rural subscriber stations in the Rural Radiotelephone Service.

[69 FR 75170, Dec. 15, 2004]

§ 22.703 Separate rural subscriber station authorization not required.
A separate authorization is not required for rural subscriber stations for which the effective radiated power does not
exceed 60 Watts and for which FAA notification of construction or alteration of the antenna structure is not required
(see criteria in § 17.7 of this chapter). Authority to operate such rural subscriber stations is conferred by the
authorization of the central office or base station from which they receive service.

§ 22.705 Rural radiotelephone system configuration.
Stations in the Rural Radiotelephone Service are authorized to communicate as follows:

     (a) Rural subscriber stations are authorized to communicate with and through the central office station(s)
         with which they are associated. However, where the establishment of a central office station in this
         service is not feasible, rural subscriber stations may be authorized to communicate with and through a
         base station in the Paging and Radiotelephone Service.

     (b) Central office stations may communicate only with rural subscriber stations.

     (c) Interoffice stations may communicate only with other interoffice stations.

§ 22.709 Rural radiotelephone service application requirements.
In addition to information required by Subparts B and D of this part, FCC Form 601 applications for authorization to
operate a station in the Rural Radiotelephone Service must contain the applicable supplementary information
described in this section.

     (a) Interoffice stations. Applications for authority to operate a new interoffice station or to add transmitters or
         points of communications to an existing interoffice station must contain an exhibit demonstrating that
         the requested facilities would be used only for interconnecting central office stations and explaining why
         the use of alternative existing radio or wire facilities is not feasible.

47 CFR 22.709(a) (enhanced display)                                                                         page 76 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.709(b)
Public Mobile Services

     (b) Technical information required. For each transmitter in the Rural Radiotelephone Service, the following
         information is required by FCC Form 601:

           (1) Location description: city; county; state; geographic coordinates correct to ±1 second, the datum
               used (NAD83), site elevation above mean sea level, proximity to adjacent market boundaries and
               international borders;

           (2) Antenna height to tip above ground level, the height of the center of radiation of the antenna above
               the average terrain, the height of the antenna center of radiation above the average elevation of the
               terrain along each of the 8 cardinal radials, antenna gain in the maximum lobe, the beamwidth of the
               maximum lobe of the antenna, a polar plot of the horizontal gain pattern of the antenna, the electric
               field polarization of the wave emitted by the antenna when installed as proposed;

           (3) The center frequency of each channel requested, the maximum effective radiated power, the
               effective radiated power in each of the cardinal radial directions, any non-standard emission types to
               be used, including bandwidth and modulation type, the transmitter classification (e.g. central office),
               and the locations and call signs, if any, of any fixed points of communication.

     (c) No landline facilities. Each application for a central office station must contain an exhibit showing that it is
         impracticable to provide the required communication service by means of landline facilities.

     (d) Interference exhibit. Applications for central office, interoffice and relay stations must include an exhibit
         identifying co-channel facilities and demonstrating, in accordance with § 22.715 that the proposed
         station, if authorized, would not cause interference to the service of those co-channel facilities. This
         exhibit must:

           (1) For UHF channels, identify each protected transmitter located within 108 kilometers (67 miles) of the
               proposed transmitter in directions in which the distance to the interfering contour is 76.4 kilometers
               (47.5 miles) or less, and within 178 kilometers (111 miles) of the proposed transmitter in directions
               in which the distance to the interfering contour exceeds 76.4 kilometers (47.5 miles); and identify
               each protected Basic Exchange Telephone Radio System central office transmitter in the rural
               Radiotelephone Service within 231 kilometers (144 miles).

           (2) For VHF channels, identify each protected transmitter located within 135 kilometers (84 miles) of the
               proposed transmitter in directions in which the distance to the interfering contour is 93.3 kilometers
               (58 miles) or less, and within 178 kilometers (111 miles) of the proposed transmitter in directions in
               which the distance to the interfering contour exceeds 93.3 kilometers (58 miles).

           (3) For each protected transmitter identified, show the results of distance calculations indicating that
               there would be no overlap of service and interfering contours, or alternatively, indicate that the
               licensee of or applicant for the protected transmitter and/or the applicant, as required, have agreed
               in writing to accept any interference resulting from operation of the proposed transmitter.

     (e) Blocking probability. Applications for authority to operate basic exchange telephone radio systems
         (BETRS) that request more than two channel pairs must include an exhibit containing calculations
         showing that the number of channels requested is the minimum necessary to achieve the required grade
         of service (in terms of blocking probability), and that there will be adequate spectrum available in the area
         to meet realistic estimates of current and future demand for paging, two-way mobile and rural
         radiotelephone services (see § 22.719(c)). Applications for authority to operate new conventional rural
         radiotelephone systems that request more than two channel pairs must include a statement explaining
         why BETRS technology is not being proposed.

47 CFR 22.709(e) (enhanced display)                                                                         page 77 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                              47 CFR 22.709(f)
Public Mobile Services

     (f) Antenna Information. Upon request by an applicant, licensee, or the Commission, a part 22 applicant or
         licensee of whom the request is made shall furnish the antenna type, model, and the name of the antenna
         manufacturer to the requesting party within ten (10) days of receiving written notification.

[59 FR 59507, Nov. 17, 1994, as amended at 59 FR 59954, Nov. 21, 1994; 63 FR 68948, Dec. 14, 1998; 64 FR 53240, Oct. 1, 1999]

§ 22.711 Provision of information to applicants.
Licensees in the Rural Radio Service must, upon request by a bona-fide prospective applicant, provide to such
applicant the information required by § 22.709 regarding the portion of the licensee's operations that potentially
could affect, or be affected by, the prospective applicant's proposed station, if such information is not already on file
with the FCC. This information must be provided to the bona-fide prospective applicant no later than 30 days after
receipt of the information request.

[59 FR 59954, Nov. 21, 1994]

§ 22.713 Construction period for rural radiotelephone stations.
The construction period for stations in the Rural Radiotelephone Service is 12 months.

§ 22.715 Technical channel assignment criteria for rural radiotelephone stations.
Channels are assigned in the Rural Radiotelephone Service using the procedures in § 22.567.

§ 22.717 Procedure for mutually exclusive applications in the Rural Radiotelephone Service.
Mutually exclusive applications in the Rural Radiotelephone Service, including those that are mutually exclusive with
applications in the Paging and Radiotelephone Service, are processed in accordance with § 22.131 and with this
section.

     (a) Applications in the Rural Radiotelephone Service may be mutually exclusive with applications in the
         Paging and Radiotelephone Service if they seek authorization to operate facilities on the same channel in
         the same area, or the technical proposals are otherwise in conflict. See § 22.567.

     (b) A modification application in either service filed on the earliest filing date may cause all later-filed mutually
         exclusive applications of any type in either service to be “cut off” (excluded from a same-day filing group)
         and dismissed, pursuant to § 22.131(c)(3)(ii) and § 22.131(c)(4).

[59 FR 59956, Nov. 21, 1994, as amended at 62 FR 11636, Mar. 12, 1997]

§ 22.719 Additional channel policy for rural radiotelephone stations.
The rules in this section govern the processing of applications for central office stations that request a rural
radiotelephone channel pair when the applicant has applied for or been granted an authorization for other rural
radiotelephone channel pairs in the same area. The general policy of the FCC is to promote effective use of the
spectrum by encouraging the use of spectrum-efficient technologies (i.e. BETRS) and by assigning the minimum
number of channels necessary to provide service.

47 CFR 22.719 (enhanced display)                                                                                 page 78 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.719(a)
Public Mobile Services

     (a) Transmitters in same area. Any central office station transmitter on any channel pair listed in § 22.725 is
         considered to be in the same area as another central office station transmitter on any other channel pair
         listed in § 22.725 if the transmitting antennas are located within 10 kilometers (6.2 miles) of each other.

     (b) Initial channel pairs. The FCC does not assign more than two channel pairs for new central office stations,
         unless there are more than eight rural subscriber stations to be served. Stations are considered to be new
         if there are no authorized transmitters on any channel listed in § 22.725 controlled by the applicant in the
         same geographic area.

     (c) Additional channel pairs. Applications for central office station transmitters to be located in the same area
         as an authorized central office station controlled by the applicant, but to operate on a different channel
         pair(s) are considered as requests for additional channel pair(s) for the authorized central office station.
         The FCC may grant applications for additional channel pairs provided that the need for each additional
         channel pair (after the first two) is established and fully justified in terms of achieving the required grade
         of service (blocking probability), and the applicant demonstrates that there will still be adequate spectrum
         available in the area to meet realistic estimates of current and future demand for paging, two-way mobile
         and rural radiotelephone services. In the case of conventional rural radiotelephone central office stations,
         an explanation must be provided as to why BETRS technology is not being used instead of additional
         channel pairs.

                                   CONVENTIONAL RURAL RADIOTELEPHONE STATIONS

§ 22.721 Geographic area authorizations.
Eligible persons may apply for a paging geographic area authorization in the Rural Radiotelephone Service, on the
channel pairs listed in § 22.725, by following the procedures and requirements set forth in § 22.503 for paging
geographic area authorizations.

[62 FR 11636, Mar. 12, 1997]

§ 22.723 Secondary site-by-site authorizations.
Authorizations for new facilities (including new sites and additional channel pairs for existing sites) in the Rural
Radiotelephone Service (including BETRS facilities) may be granted after May 12, 1997 only on the condition that
such authorizations shall be secondary to any existing or future co-channel paging geographic area authorization in
the Paging and Radiotelephone Service or the Rural Radiotelephone Service. If the paging geographic area licensee
notifies the Rural Radiotelephone Service licensee that operation of a co-channel secondary facility must be
discontinued because it may cause interference to existing or planned facilities, the Rural Radiotelephone Service
licensee must discontinue operation of that facility on the particular channel pair involved no later than six months
after such notice.

[62 FR 11636, Mar. 12, 1997]

§ 22.725 Channels for conventional rural radiotelephone stations and basic exchange telephone
radio systems.
The following channels are allocated for paired assignment to transmitters that provide conventional rural
radiotelephone service and to transmitters in basic exchange telephone radio systems. These channels may be
assigned for use by central office or rural subscriber stations as indicated, and interoffice stations. These channels

47 CFR 22.725 (enhanced display)                                                                          page 79 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.725(a)
Public Mobile Services

may be assigned also for use by relay stations in systems where it would be impractical to provide rural
radiotelephone service without the use of relay stations. All channels have a bandwidth of 20 kHz and are
designated by their center frequencies in MegaHertz.

      Central                                               Central
                              Rural subscriber                                      Rural subscriber
       office                                                office
                                                 VHF Channels
 152.03             158.49                             152.57             157.83
 152.06             158.52                             152.60             157.86
 152.09             158.55                             152.63             157.89
 152.12             158.58                             152.66             157.92
 152.15             158.61                             152.69             157.95
 152.18             158.64                             152.72             157.98
 152.21             158.67                             152.75             158.01
 152.51             157.77                             152.78             158.04
 152.54             157.80                             152.81             158.07
                                                 UHF Channels
 454.025            459.025                            454.350            459.350
 454.050            459.050                            454.375            459.375
 454.075            459.075                            454.400            459.400
 454.100            459.100                            454.425            459.425
 454.125            459.125                            454.450            459.450
 454.150            459.150                            454.475            459.475
 454.175            459.175                            454.500            459.500
 454.200            459.200                            454.525            459.525
 454.225            459.225                            454.550            459.550
 454.250            459.250                            454.575            459.575
 454.275            459.275                            454.600            459.600
 454.300            459.300                            454.625            459.625
 454.325            459.325                            454.650            459.650

     (a) The channels listed in this section are also allocated for assignment in the Paging and Radiotelephone
         Service.

     (b) In Puerto Rico and the Virgin Islands, channels in the 154.04–154.46 MHz and 161.40–161.85 MHz
         frequency ranges may be assigned to transmitters providing rural radiotelephone service; channels in
         these ranges are also allocated for assignment in the International Fixed Public and Aeronautical Fixed
         radio services.

[59 FR 59507, Nov. 17, 1994; 60 FR 9891, Feb. 22, 1995, as amended at 70 FR 19309, Apr. 13, 2005]

47 CFR 22.725(b) (enhanced display)                                                                      page 80 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.727
Public Mobile Services

§ 22.727 Power limits for conventional rural radiotelephone transmitters.
The transmitting power of transmitters operating on the channels listed in § 22.725 must not exceed the limits in
this section.

     (a) Maximum ERP. The effective radiated power (ERP) of central office and rural subscriber station
         transmitters must not exceed the applicable limits in this paragraph under any circumstances.

                           Frequency range (MHz)                             Maximum ERP (watts)
            152–153                                                                                        1400
            157–159                                                                                         150
            454–455                                                                                        3500
            459–460                                                                                         150

     (b) Basic power limit. Except as provided in paragraph (d) of this section, the ERP of central office station
         transmitters must not exceed 500 Watts.

     (c) Height-power limits. Except as provided in paragraph (d) of this section, the ERP of central office station
         transmitters must not exceed the amount that would result in an average distance to the “service contour”
         of 41.6 kilometers (26 miles) for VHF channels or 30.7 kilometers (19 miles) for UHF channels. The
         average distance to the “service contour” is calculated by taking the arithmetic mean of the distances
         determined using the procedures specified in § 22.567 for the eight cardinal radial directions, excluding
         cardinal radial directions for which 90% or more of the distance so calculated is over water.

     (d) Encompassed interfering contour areas. Central office station transmitters are exempt from the basic
         power and height-power limits of this section if the area within their interfering contours is totally
         encompassed by the interfering contours of operating co-channel central office station transmitters
         controlled by the same licensee. For the purpose of this paragraph, operating transmitters are authorized
         transmitters that are providing service to subscribers.

     (e) Adjacent channel protection. The ERP of central office station transmitters must not exceed 500 Watts if
         they transmit on channel 454.025 MHz and are located less than 7 kilometers (4.3 miles) from any Private
         Radio Services station receiving on adjacent channel 454.000 MHz.

[59 FR 59507, Nov. 17, 1994, as amended at 70 FR 19309, Apr. 13, 2005]

§ 22.731 Emission limitations.
Upon application for multichannel operation, the FCC may authorize emission bandwidths wider than those
specified in § 22.357, provided that spectrum utilization is equal to or better than that achieved by single channel
operation.

§ 22.733 Priority of service.
Within the Rural Radiotelephone Service, the channels listed in § 22.725 are intended primarily for use in rendition of
public message service between rural subscriber and central office stations and to provide radio trunking facilities
between central offices. The channels may also be used, however, for the rendition of private leased-line

47 CFR 22.733 (enhanced display)                                                                          page 81 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                           47 CFR 22.737
Public Mobile Services

communication service provided that such usage would not reduce or impair the extent or quality of communication
service that would be available, in the absence of private leased-line service, to the general public receiving or
subsequently requesting public message service from a central office.

§ 22.737 Temporary fixed stations.
The FCC may, upon proper application therefor, authorize the construction and operation of temporary fixed
stations. Temporary fixed stations are to be used as rural subscriber, interoffice, or central office stations when
those stations are unavailable or when service from those stations is disrupted by storms or emergencies.

     (a) Six month limitation. If it is necessary for a temporary fixed station to remain at the same location for
         more than six months, the licensee of that station must apply for authorization to operate the station at
         the specific location at least 30 days before the end of the six month period.

     (b) International communications. Communications between the United States and Canada or Mexico must
         not be carried using a temporary fixed station without prior authorization from the FCC. Licensees
         desiring to carry such communications should apply sufficiently in advance to allow for the time
         necessary to coordinate with Canada or Mexico.

                                      BASIC EXCHANGE TELEPHONE RADIO SYSTEMS

§ 22.757 Channels for basic exchange telephone radio systems.
The channels listed in § 22.725 are also allocated for paired assignment to transmitters in basic exchange
telephone radio systems.

[70 FR 19309, Apr. 13, 2005]

§ 22.759 Power limit for BETRS.
The effective radiated power of central office and rural subscriber station transmitters used in basic exchange
telephone radio systems must not exceed the limits in this section.

     (a) Maximum ERP. The effective radiated power (ERP) of central office and rural subscriber station
         transmitters in BETRS must not exceed the applicable limits in this paragraph under any circumstances.

                           Frequency range (MHz)                              Maximum ERP (watts)
            152–153                                                                                         1400
            157–159                                                                                          150
            454–455                                                                                         3500
            459–460                                                                                          150

     (b) Height-power limit. The ERP of central office stations in BETRS must not exceed the amount calculated as
         follows:

ERPw = 557,418 ÷ hm2

     where ERPw is the effective radiated power in Watts

47 CFR 22.759(b) (enhanced display)                                                                        page 82 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                          47 CFR 22.801
Public Mobile Services

     hm is the average (eight cardinal radial) antenna height above average terrain in meters

Subpart G—Air-Ground Radiotelephone Service
§ 22.801 Scope.
The rules in this subpart govern the licensing and operation of air-ground stations and systems. The licensing and
operation of these stations and systems is also subject to rules elsewhere in this part and in part 1 of this chapter
that generally apply to the Public Mobile Services. In case of conflict, however, the rules in this subpart govern.

[70 FR 19309, Apr. 13, 2005]

                                      GENERAL AVIATION AIR-GROUND STATIONS

§ 22.805 Channels for general aviation air-ground service.
The following channels are allocated for the provision of radiotelephone service to airborne mobile subscribers in
general aviation aircraft. These channels have a bandwidth of 20 kHz and are designated by their center frequencies
in MegaHertz.

                                      Signalling Channel Pair

                Ground                                       Airborne mobile
 454.675                                459.675

                                 Communication Channel Pairs

                Ground                                       Airborne mobile
 454.700                                459.700
 454.725                                459.725
 454.750                                459.750
 454.775                                459.775
 454.800                                459.800
 454.825                                459.825
 454.850                                459.850
 454.875                                459.875
 454.900                                459.900
 454.925                                459.925
 454.950                                459.950
 454.975                                459.975

     (a) Channel 454.675 MHz is assigned to each and every ground station, to be used only for automatically
         alerting airborne mobile stations of incoming calls.

     (b) All airborne mobile channels are assigned for use by each and every airborne mobile station.

47 CFR 22.805(b) (enhanced display)                                                                       page 83 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                47 CFR 22.807
Public Mobile Services

§ 22.807 General aviation air-ground application requirements.
In addition to the information required by subparts B and D of this part, FCC Form 601 applications for authorization
to operate a general aviation air-ground station must contain the applicable supplementary information described in
this section.

     (a) Administrative information. The following information is required by FCC Form 601.

           (1) The number of transmitter sites for which authorization is requested.

           (2) The call sign(s) of other facilities in the same area that are ultimately controlled by the real party in
               interest to the application.

     (b) Technical information required. For each transmitter in the Rural Radiotelephone Service, the following
         information is required by FCC Form 601:

           (1) Location description, city, county, state, geographic coordinates (NAD83) correct to ±1 second, site
               elevation above mean sea level, proximity to adjacent market boundaries and international borders;

           (2) Antenna height to tip above ground level, antenna gain in the maximum lobe, the electric field
               polarization of the wave emitted by the antenna when installed as proposed;

           (3) The center frequency of each channel requested, the maximum effective radiated power, any non-
               standard emission types to be used, including bandwidth and modulation type and the transmitter
               classification (e.g. ground or signaling).

[59 FR 59507, Nov. 17, 1994, as amended at 59 FR 59954, Nov. 21, 1994; 63 FR 68948, Dec. 14, 1998; 64 FR 53240, Oct. 1, 1999.
Redesignated and amended at 70 FR 19309, Apr. 13, 2005]

§ 22.809 Transmitting power limits.
The transmitting power of ground and airborne mobile transmitters operating on the channels listed in § 22.805
must not exceed the limits in this section.

     (a) Ground station transmitters. The effective radiated power of ground stations must not exceed 100 Watts
         and must not be less than 50 Watts, except as provided in § 22.811.

     (b) Airborne mobile transmitters. The transmitter power output of airborne mobile transmitters must not
         exceed 25 Watts and must not be less than 4 Watts.

§ 22.813 Technical channel pair assignment criteria.
The rules in this section establish technical assignment criteria for the channel pairs listed in § 22.805. These
criteria are intended to provide substantial service volumes over areas that have significant local and regional
general aviation activity, while maintaining the continuous nationwide in-route coverage of the original geographical
layout.

     (a) Distance separation for co-channel ground stations. The FCC may grant an application requesting
         assignment of a communication channel pair to a proposed ground transmitter only if the proposed
         antenna location is at least 800 kilometers (497 miles) from the antenna location of the nearest co-
         channel ground transmitter in the United States, its territories and possessions; and 1000 kilometers (621
         miles) from the antenna location of the nearest co-channel ground transmitter in Canada.

47 CFR 22.813(a) (enhanced display)                                                                              page 84 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                      47 CFR 22.813(b)
Public Mobile Services

     (b) Dispersion. The FCC may grant an application requesting assignment of a communication channel pair to
         a proposed ground transmitter only if there are no more than five different communication channel pairs
         already assigned to ground transmitters with antenna locations within a 320 kilometer (199 mile) radius
         of the proposed antenna location.

§ 22.815 Construction period for general aviation ground stations.
The construction period (see § 1.946 of this chapter) for general aviation ground stations is 12 months.

[70 FR 19310, Apr. 13, 2005]

§ 22.817 Additional channel policies.
The rules in this section govern the processing of applications for authority to operate a ground station transmitter
on any ground station communication channel listed in § 22.805 when the applicant has applied or been granted an
authorization for other ground station communication channels in the same area. The general policy of the FCC is
to assign one ground station communication channel in an area to a carrier per application cycle, up to a maximum
of six ground station communication channels per area. That is, a carrier must apply for one ground station
communication channel, receive the authorization, construct the station, and notify the FCC of commencement of
service before applying for an additional ground station communication channel in that area.

     (a) Air-ground transmitters in same area. Any transmitter on any of the ground station channels listed in §
         22.805 is considered to be in the same area as another transmitter on any ground station channel listed in
         § 22.805 if it is located less than 350 kilometers (217 miles) from that transmitter.

     (b) Initial channel. The FCC will not assign more than one ground station communication channel for new
         ground stations. Ground stations are considered to be new if there are no authorized ground station
         transmitters on any channel listed in § 22.805 controlled by the applicant in the same area.

     (c) Additional channel. Applications for ground transmitters to be located in the same area as an authorized
         ground station controlled by the applicant, but to operate on a different ground station communication
         channel, are considered as requesting an additional channel for the authorized station.

     (d) Amendment of pending application. If the FCC receives and accepts for filing an application for a ground
         station transmitter to be located in the same area as a ground station transmitter proposed in a pending
         application previously filed by the applicant, but on a different ground station communication channel, the
         subsequent application is treated as a major amendment to change the technical proposal of the prior
         application. The filing date of any application so amended is the date the FCC received the subsequent
         application.

     (e) Dismissal of premature applications for additional channel. If the FCC receives an application requesting
         an additional ground station communication channel for an authorized ground station prior to receiving
         notification that the station is providing service to subscribers on the authorized channel(s), the FCC may
         dismiss that application without prejudice.

     (f) Dismissal of applications for seventh channel. If the FCC receives an application requesting an additional
         ground station communication channel for an authorized ground station which would, if granted, result in
         that station being assigned more than six ground station communication channels in the same area, the
         FCC may dismiss that application without prejudice.

                                      COMMERCIAL AVIATION AIR-GROUND SYSTEMS

47 CFR 22.817(f) (enhanced display)                                                                        page 85 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                             47 CFR 22.853
Public Mobile Services

§ 22.853 Eligibility to hold interest in licenses limited to 3 MHz of spectrum.
No individual or entity may hold, directly or indirectly, a controlling interest in licenses authorizing the use of more
than three megahertz of spectrum (either shared or exclusive) in the 800 MHz commercial aviation Air-Ground
Radiotelephone Service frequency bands (see § 22.857). Individuals and entities with either de jure or de facto
control of a licensee in these bands will be considered to have a controlling interest in its license(s). For purposes of
this rule, the definitions of “controlling interests” and “affiliate” set forth in paragraphs (c)(2) and (c)(5) of § 1.2110
of this chapter shall apply.

[70 FR 19310, Apr. 13, 2005]

§ 22.857 Channel plan for commercial aviation air-ground systems.
The 849–851 MHz and 894–896 MHz frequency bands are designated for paired nationwide exclusive assignment
to the licensee or licensees of systems providing radio telecommunications service, including voice and/or data
service, to persons on board aircraft. Air-ground systems operating in these frequency bands are referred to in this
part as “commercial aviation” systems.

[70 FR 19310, Apr. 13, 2005]

§ 22.859 Incumbent commercial aviation air-ground systems.
This section contains rules concerning continued operation of commercial aviation air-ground systems that were
originally authorized prior to January 1, 2004 to provide radiotelephone service using narrowband (6 kHz) channels,
and that have been providing service continuously since the original commencement of service (hereinafter
“incumbent systems”).

     (a) An incumbent system may continue to operate under its authorization, for the remaining term of such
         authorization, subject to the terms and conditions attached thereto. Wherever such technical and
         operational conditions differ from technical and operational rules in this subpart, those conditions shall
         govern its operations.

     (b) Notwithstanding any other provision in this chapter, the licensee of an incumbent system shall not be
         entitled to an expectation of renewal of said authorization.

     (c) During the period that an incumbent system continues to operate and provide service pursuant to
         paragraph (a) of this section, air-ground systems of licensees holding a new authorization for the
         spectrum within which the incumbent system operates must not cause interference to the incumbent
         system. Protection from interference requires that the signals of the new systems must not exceed a
         ground station received power of −130 dBm within a 6 kHz receive bandwidth, calculated assuming a 0
         dBi vertically polarized receive antenna.

[70 FR 19310, Apr. 13, 2005]

§ 22.861 Emission limitations.
The rules in this section govern the spectral characteristics of emissions for commercial aviation systems in the Air-
Ground Radiotelephone Service. Commercial aviation air-ground systems may use any type of emission or
technology that complies with the technical rules in this subpart.

47 CFR 22.861 (enhanced display)                                                                             page 86 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.861(a)
Public Mobile Services

     (a) Out of band emissions. The power of any emission outside of the authorized operating frequency ranges
         must be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log (P) dB.

     (b) Measurement procedure. Compliance with these rules is based on the use of measurement
         instrumentation employing a resolution bandwidth of 100 kHz or greater. In the 1 MHz bands immediately
         outside and adjacent to the frequency block a resolution bandwidth of at least one percent of the
         emission bandwidth of the fundamental emission of the transmitter may be employed. A narrower
         resolution bandwidth is permitted in all cases to improve measurement accuracy provided the measured
         power is integrated over the full required measurement bandwidth (i.e., 100 kHz or 1 percent of emission
         bandwidth, as specified). The emission bandwidth is defined as the width of the signal between two
         points, one below the carrier center frequency and one above the carrier center frequency, outside of
         which all emissions are attenuated at least 26 dB below the transmitter power.

     (c) Alternative out of band emission limit. The licensee(s) of commercial aviation air-ground systems,
         together with affected licensees of Cellular Radiotelephone Service systems operating in the spectrum
         immediately below and adjacent to the commercial aviation air-ground bands, may establish an
         alternative out of band emission limit to be used at the 849 MHz and 894 MHz band edge(s) in specified
         geographical areas, in lieu of that set forth in this section, pursuant to a private contractual arrangement
         of all affected licensees and applicants. In this event, each party to such contract shall maintain a copy of
         the contract in their station files and disclose it to prospective assignees or transferees and, upon request,
         to the FCC.

     (d) Interference caused by out of band emissions. If any emission from a transmitter operating in this service
         results in interference to users of another radio service, the FCC may require a greater attenuation of that
         emission than specified in this section.

[70 FR 19310, Apr. 13, 2005]

§ 22.863 Frequency stability.
The frequency stability of equipment used under this subpart shall be sufficient to ensure that, after accounting for
Doppler frequency shifts, the occupied bandwidth of the fundamental emissions remains within the authorized
frequency bands of operation.

[70 FR 19310, Apr. 13, 2005]

§ 22.867 Effective radiated power limits.
The effective radiated power (ERP) of ground and airborne stations operating on the frequency ranges listed in §
22.857 must not exceed the limits in this section.

     (a) The peak ERP of airborne mobile station transmitters must not exceed 12 Watts.

     (b) The peak ERP of ground station transmitters must not exceed 500 Watts.

[70 FR 19310, Apr. 13, 2005]

47 CFR 22.867(b) (enhanced display)                                                                       page 87 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                            47 CFR 22.873
Public Mobile Services

§ 22.873 Construction requirements for commercial aviation air-ground systems.
Licensees authorized to use more than one megahertz (1 MHz) of the 800 MHz commercial aviation air-ground
spectrum allocation (see § 22.857) must make a showing of “substantial service” as set forth in this section. Failure
by any such licensee to meet this requirement will result in forfeiture of the license and the licensee will be ineligible
to regain it. Licensees authorized to use one megahertz or less of the 800 MHz commercial aviation air-ground
spectrum allocation are not subject to the requirements in this section.

     (a) “Substantial service” is defined as service that is sound, favorable, and substantially above a level of
         mediocre service that just might minimally warrant renewal.

     (b) Each commercial aviation air-ground system subject to the requirements of this section must
         demonstrate substantial service within 5 years after grant of the authorization. Substantial service may be
         demonstrated by, but is not limited to, either of the following “safe harbor” provisions:

           (1) Construction and operation of 20 ground stations, with at least one ground station located in each of
               the 10 Federal Aviation Administration regions; or,

           (2) Provision of service to the airspace of 25 of the 50 busiest airports (as measured by annual
               passenger boardings).

[70 FR 19310, Apr. 13, 2005]

§ 22.877 Unacceptable interference to part 90 non-cellular 800 MHz licensees from commercial
aviation air-ground systems.
The definition of unacceptable interference to non-cellular part 90 licensees in the 800 MHz band from commercial
aviation air-ground systems is the same as the definition set forth in § 22.970 which is applicable to Cellular
Radiotelephone Service systems.

[70 FR 19311, Apr. 13, 2005]

§ 22.878 Obligation to abate unacceptable interference.
This section applies only to commercial aviation ground stations transmitting in the 849–851 MHz band, other than
commercial aviation ground stations operating under the authority of a license originally granted prior to January 1,
2004.

     (a) Strict responsibility. Any licensee who, knowingly or unknowingly, directly or indirectly, causes or
         contributes to causing unacceptable interference to a non-cellular part 90 licensee in the 800 MHz band,
         as defined in § 22.877, 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 § 22.879. 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, whether in the commercial aviation air-ground
         radiotelephone service or in the Cellular Radiotelephone Service (see § 22.971), knowingly or
         unknowingly, directly or indirectly, cause or contribute to causing unacceptable interference to a non-

47 CFR 22.878(b) (enhanced display)                                                                         page 88 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                      47 CFR 22.878(b)(1)
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           cellular part 90 licensee in the 800 MHz band, as defined in § 22.877, such licensees shall be jointly and
           severally responsible for abating interference, with full cooperation and utmost diligence, in the shortest
           practicable time.

           (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 § 22.879(c). This joint and several responsibility rule
               applies to all forms of interference, including out-of-band emissions and intermodulation.

           (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 part 90 licensee in the 800 MHz band, as defined
               in § 22.877, 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 § 22.879.

[70 FR 19411, Apr. 13, 2005]

§ 22.879 Interference resolution procedures.
This section applies only to commercial aviation ground stations transmitting in the 849–851 MHz band, other than
commercial aviation ground stations operating under the authority of a license originally granted prior to January 1,
2004.

     (a) Initial notification. Commercial aviation air-ground system licensees may receive initial notification of
         interference from non-cellular part 90 licensees in the 800 MHz band pursuant to § 90.674(a) of this
         chapter.

           (1) Commercial aviation air-ground system licensees shall join with part 90 ESMR licensees and Cellular
               Radiotelephone Service licensees in utilizing an electronic means of receiving the initial notification
               described in § 90.674(a) of this chapter. See § 22.972.

           (2) Commercial aviation air-ground system licensees must respond to the initial notification described in
               § 90.674(a) of this chapter as soon as possible and no later than 24 hours after receipt of
               notification from a part 90 public safety/CII licensee. This response time may be extended to 48
               hours after receipt from other part 90 non-cellular licensees provided affected communications on
               these systems are not safety related.

     (b) Interference analysis. Commercial aviation air-ground system licensees—who receive an initial notification
         described in § 90.674(a) of this chapter—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 part 90 public safety/CII licensee. This response time may be extended to 96 hours after
         the initial complaint from other part 90 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. Any commercial aviation air-ground system that is responsible for causing unacceptable
         interference to non-cellular part 90 licensees in the 800 MHz band shall take affirmative measures to
         resolve such interference.

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           (1) Commercial aviation air-ground system licensees found to contribute to unacceptable interference,
               as defined in § 22.877, shall resolve such interference in the shortest time practicable. Commercial
               aviation air-ground system 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 technical parameters that may need to be adjusted is left to the discretion of the
               commercial aviation air-ground system licensee, whose affirmative measures may include, but not
               be limited to, the following techniques:

                 (i)   Increasing the desired power of the public safety/CII signal;

                 (ii) Decreasing the power of the commercial aviation air-ground system signal;

                (iii) Modifying the commercial aviation air-ground system antenna height;

                (iv) Modifying the commercial aviation air-ground system antenna characteristics;

                 (v) Incorporating filters into the commercial aviation air-ground system transmission equipment;

                (vi) Changing commercial aviation air-ground system frequencies; and

                (vii) Supplying interference-resistant receivers to the affected public safety/CII licensee(s). If this
                      technique is used, in all circumstances, commercial aviation air-ground system licensees shall
                      be responsible for all costs thereof.

           (2) Whenever short-term interference abatement measures prove inadequate, the affected part 90 non-
               cellular licensee shall, consistent with but not compromising safety, make all necessary concessions
               to accepting interference until a longer-term remedy can be implemented.

           (3) When a part 90 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.

[70 FR 19311, Apr. 13, 2005, as amended at 71 FR 69038, Nov. 29, 2006]

47 CFR 22.879(c)(3)(v) (enhanced display)                                                                     page 90 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                               47 CFR 22.880
Public Mobile Services

§ 22.880 Information exchange.
     (a) Prior notification. Public safety/CII licensees may notify a commercial aviation air-ground system licensee
         that they wish to receive prior notification of the activation or modification of a commercial aviation air-
         ground system ground station site in their area. Thereafter, the commercial aviation air-ground system
         licensee must provide the following information to the public safety/CII licensee at least 10 business days
         before a new ground station is activated or an existing ground station is modified:

           (1) Location;

           (2) Effective radiated power;

           (3) Antenna manufacturer, model number, height above ground level and up tilt angle, as installed;

           (4) Channels available for use.

     (b) Purpose of prior notification. The prior notification of ground station activation or modification is for
         informational purposes only: public safety/CII licensees are not afforded the right to accept or reject the
         activation of a proposed ground station or to unilaterally require changes in its operating parameters. The
         principal purposes of prior notification are to:

           (1) Allow a public safety licensee to advise the commercial aviation air-ground system licensee whether
               it believes a proposed ground station will generate unacceptable interference;

           (2) Permit commercial aviation air-ground system licensee(s) to make voluntary changes in ground
               station parameters when a public safety licensee alerts them to possible interference; and

           (3) Rapidly identify the source if interference is encountered when the ground station is activated.

[70 FR 19312, Apr. 13, 2005]

§ 22.881 Air-Ground Radiotelephone Service subject to competitive bidding.
Mutually exclusive initial applications for general aviation Air-Ground Radiotelephone Service licenses and mutually
exclusive initial applications for commercial Air-Ground Radiotelephone 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.

[70 FR 76417, Dec. 27, 2005]

§ 22.882 Designated entities.
     (a) Eligibility for small business provisions in the commercial Air-Ground Radiotelephone Service.

           (1) A small business is an entity that, together with its affiliates, its controlling interests and the affiliates
               of its controlling interests, has average gross revenues that are not more than $40 million for the
               preceding three years.

           (2) A very small business is an entity that, together with its affiliates, its controlling interests and the
               affiliates of its controlling interests, has average gross revenues that are not more than $15 million
               for the preceding three years.

     (b) Bidding credits in the commercial Air-Ground Radiotelephone Service.

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           (1) A winning bidder that qualifies as a small business, as defined in this section, or a consortium of
               small businesses may use a bidding credit of 15 percent, as specified in § 1.2110(f)(2)(iii) of this
               chapter, to lower the cost of its winning bid on a commercial Air-Ground Radiotelephone Service
               license.

           (2) A winning bidder that qualifies as a very small business, as defined in this section, or a consortium of
               very small businesses may use a bidding credit of 25 percent, as specified in § 1.2110(f)(2)(ii) of this
               chapter, to lower the cost of its winning bid on a commercial Air-Ground Radiotelephone Service
               license.

[70 FR 76417, Dec. 27, 2005]

Subpart H—Cellular Radiotelephone Service
§ 22.900 Scope.
The rules in this subpart govern the licensing and operation of cellular radiotelephone systems. Licensing and
operation of these systems are also subject to rules elsewhere in this part that apply generally to the Public Mobile
Services. In case of conflict, however, the rules in this subpart govern.

§ 22.901 Cellular service requirements and limitations.
The licensee of each Cellular system is responsible for ensuring that its Cellular system operates in compliance
with this section. Each Cellular system must provide either mobile service, fixed service, or a combination of mobile
and fixed service, subject to the requirements, limitations and exceptions in this section. Mobile service provided
may be of any type, including two-way radiotelephone, dispatch, one-way or two-way paging, and personal
communications services (as defined in part 24 of this chapter). Fixed service is considered to be primary service,
as is mobile service. When both mobile and fixed services are provided, they are considered to be co-primary
services. In providing Cellular service, each Cellular system may incorporate any technology that meets all
applicable technical requirements in this part.

[79 FR 72151, Dec. 5, 2014]

§ 22.905 Channels for cellular service.
The following frequency bands are allocated for assignment to service providers in the Cellular Radiotelephone
Service.

     (a) Channel Block A: 869–880 MHz paired with 824–835 MHz, and 890–891.5 MHz paired with 845–846.5
         MHz.

     (b) Channel Block B: 880–890 MHz paired with 835–845 MHz, and 891.5–894 MHz paired with 846.5–849
         MHz.

[67 FR 77191, Dec. 17, 2002]

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                                                                                                          47 CFR 22.907
Public Mobile Services

§ 22.907 Coordination of channel usage.
Licensees in the Cellular Radiotelephone Service must coordinate, with the appropriate parties, channel usage at
each transmitter location within 121 kilometers (75 miles) of any transmitter locations authorized to other licensees
or proposed by other applicants, except those with mutually exclusive applications. Licensees utilizing systems
employing a frequency re-use factor of 1 (universal re-use) are exempt from this requirement.

     (a) Licensees must cooperate and make reasonable efforts to resolve technical problems that may inhibit
         effective and efficient use of the cellular radio spectrum; however, licensees are not obligated to suggest
         extensive changes to or redesign other licensees' cellular systems. Licensees must make reasonable
         efforts to avoid blocking the growth of other cellular systems that are likely to need additional capacity in
         the future.

     (b) If technical problems are addressed by an agreement or operating agreement between the licensees that
         would result in a reduction of quality or capacity of either system, the licensees must notify the
         Commission by updating FCC Form 601.

[59 FR 59507, Nov. 17, 1994, as amended at 63 FR 68951, Dec. 14, 1998; 82 FR 17582, Apr. 12, 2017]

§ 22.909 Cellular markets.
Cellular Market Areas (CMAs) are standard geographic areas used by the FCC for administrative convenience in the
licensing of Cellular systems. CMAs comprise Metropolitan Statistical Areas (MSAs) and Rural Service Areas
(RSAs). All CMAs and the counties they comprise are listed in: “Common Carrier Public Mobile Services Information,
Cellular MSA/RSA Markets and Counties,” Public Notice, Rep. No. CL–92–40, 7 FCC Rcd 742 (1992).

     (a) MSAs. Metropolitan Statistical Areas are 306 areas, including New England County Metropolitan Areas
         and the Gulf of Mexico Service Area (water area of the Gulf of Mexico, border is the coastline), defined by
         the Office of Management and Budget, as modified by the FCC.

     (b) RSAs. Rural Service Areas are 428 areas, other than MSAs, established by the FCC.

[59 FR 59507, Nov. 17, 1994, as amended at 79 FR 72151, Dec. 5, 2014]

§ 22.911 Cellular geographic service area.
The Cellular Geographic Service Area (CGSA) of a Cellular system is the geographic area considered by the FCC to
be served by the Cellular system and is the area within which cellular systems are entitled to protection and adverse
effects for the purpose of determining whether a petitioner has standing are recognized. The CGSA is the
composite of the service areas of all of the cells in the system, excluding any Unserved Area (even if it is served on
a secondary basis) or area within the CGSA of another Cellular system. The service area of a cell is the area within
its service area boundary (SAB). Licensees that use power spectral density (PSD) at cell sites within their licensed
geographic area are subject to paragraph (c) of this section; all other licensees are subject to paragraph (a) (or, as
applicable, paragraph (b)) of this section. If the calculation under paragraph (a), (b), or (c) of this section (as
applicable) yields an SAB extension comprising at least 130 contiguous square kilometers (50 contiguous square
miles), the licensee must submit an application for major modification of the CGSA using FCC Form 601. See also
§§ 22.912, 22.949, and 22.953.

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     (a) CGSA determination (non-PSD). For the purpose of calculating the SABs for cell sites and determining
         CGSA expansion areas for Cellular base stations that do not operate using PSD (as permitted under §
         22.913), the distance to the SAB is calculated as a function of effective radiated power (ERP) and antenna
         center of radiation height above average terrain (HAAT), height above sea level (HASL), or height above
         mean sea level (HAMSL).

           (1) Except as provided in paragraphs (a)(2) and (b) of this section, the distance from a cell transmitting
               antenna to its SAB along each cardinal radial is calculated as follows:

                d = 2.531 × h0.34 × p0.17
          where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

           (2) The distance from a cell transmitting antenna located in the Gulf of Mexico Service Area (GMSA) to
               its SAB along each cardinal radial is calculated as follows:

           d = 6.895 × h0.30 × p0.15

          Where:

          d is the radial distance in kilometers

          h is the radial antenna HAAT in meters

          p is the radial ERP in Watts

           (3) The value used for h in the formula in paragraph (a)(2) of this section must not be less than 8 meters
               (26 feet) HASL (or HAMSL, as appropriate for the support structure). The value used for h in the
               formula in paragraph (a)(1) of this section must not be less than 30 meters (98 feet) HAAT, except
               that for unserved area applications proposing a cell with an ERP not exceeding 10 Watts, the value
               for h used in the formula in paragraph (a)(1) of this section to determine the service area boundary
               for that cell may be less than 30 meters (98 feet) HAAT, but not less than 3 meters (10 feet) HAAT.

           (4) The value used for p in the formulas in paragraphs (a)(1) and (a)(2) of this section must not be less
               than 0.1 Watt or 27 dB less than (1/500 of) the maximum ERP in any direction, whichever is more.

           (5) Whenever use of the formula in paragraph (a)(1) of this section pursuant to the exception contained
               in paragraph (a)(3) of this section results in a calculated distance that is less than 5.4 kilometers
               (3.4 miles), the radial distance to the service area boundary is deemed to be 5.4 kilometers (3.4
               miles).

           (6) The distance from a cell transmitting antenna to the SAB along any radial other than the eight
               cardinal radials is calculated by linear interpolation of distance as a function of angle.

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                                                                                                           47 CFR 22.911(b)
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     (b) Alternative CGSA determination (non-PSD). If a carrier believes that the method described in paragraph (a)
         of this section produces a CGSA that departs significantly (±20% in the service area of any cell) from the
         geographic area where reliable cellular service is actually provided, the carrier may submit, as an exhibit to
         an application for modification of the CGSA using FCC Form 601, a depiction of what the carrier believes
         the CGSA should be. Such submissions must be accompanied by one or more supporting propagation
         studies using methods appropriate for the 800–900 MHz frequency range, including all supporting data
         and calculations, and/or by extensive field strength measurement data. For the purpose of such
         submissions, cellular service is considered to be provided in all areas, including “dead spots”, between the
         transmitter location and the locus of points where the predicted or measured median field strength finally
         drops to 32 dBµV/m (i.e. does not exceed 32 dBµV/m further out). If, after consideration of such
         submissions, the FCC finds that adjustment to a CGSA is warranted, the FCC may grant the application.

           (1) The alternative CGSA determination must define the CGSA in terms of distances from the cell sites
               to the 32 dBµV/m contour along the eight cardinal radials, with points in other azimuthal directions
               determined by the method given in paragraph (a)(6) of this section. The distances used must be
               representative of the coverage within the eight cardinal radials, as depicted by the alternative CGSA
               determination.

           (2) If an uncalibrated predictive model is used to depict the CGSA, the alternative CGSA determination
               must identify factors (e.g. terrain roughness or features) that could plausibly account for the
               difference between actual coverage and that defined by the formula in paragraph (a)(1) of this
               section. If actual measurements or a measurement-calibrated predictive model are used to depict
               the CGSA, and this fact is disclosed in the alternative CGSA determination, it is not necessary to
               offer an explanation of the difference between actual coverage and that defined by the formula in
               paragraph (a)(1) of this section. If the formula in paragraph (a)(1) of this section is clearly
               inapplicable for the cell(s) in question (e.g. for microcells), this should be disclosed in the alternative
               CGSA determination.

           (3) The provision for alternative CGSA determinations was made in recognition that the formula in
               paragraph (a)(1) of this section is a general model that provides a reasonable approximation of
               coverage in most land areas, but may under-predict or over-predict coverage in specific areas with
               unusual terrain roughness or features, and may be inapplicable for certain purposes, e.g., cells with a
               coverage radius of less than 8 kilometers (5 miles). In such cases, alternative methods that utilize
               more specific models are appropriate. Accordingly, the FCC does not consider use of the formula in
               paragraph (a)(1) of this section with parameters outside of the limits in paragraphs (a)(3), (a)(4) and
               (a)(5) of this section or with data for radials other than the cardinal radials to be a valid alternative
               method for determining the CGSA of a cellular system.

     (c) CGSA determination (PSD).

           (1) For the purpose of calculating the SABs for cell sites and determining CGSA expansion areas for
               Cellular base stations that operate using PSD (as permitted under § 22.913), the licensee must use a
               predictive propagation model that is appropriate for the service provided, taking into account terrain
               and local conditions. The SAB and CGSA boundary must be defined in terms of distances from the
               cell site to the 32 dBµV/m contour along the eight cardinal radials, with points in other azimuthal
               directions determined by the method set forth in paragraph (a)(6) of this section. The distances used
               must be representative of the coverage within the eight cardinal radials.

           (2) An application for major modification of the CGSA under this paragraph (c) must include, as an
               exhibit, a depiction of the CGSA accompanied by one or more supporting propagation studies using
               methods appropriate for the 800–900 MHz frequency range, including all supporting data and
47 CFR 22.911(c)(2) (enhanced display)                                                                       page 95 of 117
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                                                                                                              47 CFR 22.911(d)
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                calculations, and/or by extensive field strength measurement data. For the purpose of such
                submissions, Cellular service is considered to be provided in all areas, including “dead spots,”
                between the transmitter location and the locus of points where the predicted or measured median
                field strength finally drops to 32 dBµV/m (i.e., does not exceed 32 dBµV/m further out). If, after
                consideration of such submissions, the FCC finds that adjustment to a CGSA is warranted, the FCC
                may grant the application.

     (d) Protection afforded. Cellular systems are entitled to protection only within the CGSA (as determined in
         accordance with this section) from co-channel and first-adjacent channel interference (see § 22.983).
         Licensees must cooperate in resolving co-channel and first-adjacent channel interference by changing
         channels used at specific cells or by other technical means.

     (e) [Reserved]

[59 FR 59507, Nov. 17, 1994, as amended at 59 FR 59954, Nov. 21, 1994; 63 FR 68951, Dec. 14, 1998; 67 FR 9609, Mar. 4, 2002;
67 FR 77191, Dec. 17, 2002; 68 FR 42295, July 17, 2003; 79 FR 72151, Dec. 5, 2014; 82 FR 17582, Apr. 12, 2017]

§ 22.912 Service area boundary extensions.
This section contains rules governing service area boundary (SAB) extensions. SAB extensions are areas
(calculated using the methodology of § 22.911) that extend outside of the licensee's Cellular Geographic Service
Area (CGSA) boundary into Unserved Area or into the CGSA of a neighboring co-channel licensee. Service within
SAB extensions is not protected from interference or capture under § 22.911(d) unless and until the area within the
SAB extension becomes part of the CGSA in compliance with all applicable rules.

     (a) Extensions into Unserved Area. Subject to paragraph (c) of this section, the licensee of a Cellular system
         may, at any time, extend its SAB into Unserved Area and provide service on a secondary basis only,
         provided that the extension area comprises less than 130 contiguous square kilometers (50 contiguous
         square miles). If more than one licensee of a Cellular system extends into all or a portion of the same
         Unserved Area under this section, all such licensees may provide service in such Unserved Area on a
         shared secondary (unprotected) basis only.

     (b) Contract extensions. The licensee of any Cellular system may, at any time, enter into a contract with an
         applicant for, or a licensee of, a Cellular system on the same channel block to allow one or more SAB
         extensions into its CGSA (not into Unserved Area).

     (c) Gulf of Mexico Service Area. Land-based Cellular system licensees may not extend their SABs into the
         Gulf of Mexico Exclusive Zone (GMEZ) absent written contractual consent of the co-channel GMEZ
         licensee. GMEZ licensees may not extend their SABs into the CGSA of a licensee on the same channel
         block in an adjacent CMA or the Gulf of Mexico Coastal Zone absent written contractual consent of the
         co-channel licensee.

[79 FR 72151, Dec. 5, 2014]

§ 22.913 Effective radiated power limits.
Licensees in the Cellular Radiotelephone Service are subject to the effective radiated power (ERP) limits and other
requirements in this Section. See also § 22.169.

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                                                                                                       47 CFR 22.913(a)
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     (a) Maximum ERP. The ERP of transmitters in the Cellular Radiotelephone Service must not exceed the limits
         in this section.

           (1) Except as described in paragraphs (a)(2), (3), and (4) of this section, the ERP of base stations and
               repeaters must not exceed—

                 (i)   500 watts per emission; or

                 (ii) 400 watts/MHz (PSD) per sector.

           (2) Except as described in paragraphs (a)(3) and (4) of this section, for systems operating in areas more
               than 72 kilometers (45 miles) from international borders that:

                 (i)   Are located in counties with population densities of 100 persons or fewer per square mile,
                       based upon the most recently available population statistics from the Bureau of the Census; or

                 (ii) Extend coverage into Unserved Area on a secondary basis (see § 22.949), the ERP of base
                      transmitters and repeaters must not exceed—

                       (A) 1000 watts per emission; or

                       (B) 800 watts/MHz (PSD) per sector.

           (3) Provided that they also comply with paragraphs (b) and (c) of this section, licensees are permitted to
               operate their base transmitters and repeaters with an ERP greater than 400 watts/MHz (PSD) per
               sector, up to a maximum ERP of 1000 watts/MHz (PSD) per sector unless they meet the conditions
               in paragraph (a)(4) of this section.

           (4) Provided that they also comply with paragraphs (b) and (c) of this section, licensees of systems
               operating in areas more than 72 kilometers (45 miles) from international borders that:

                 (i)   Are located in counties with population densities of 100 persons or fewer per square mile,
                       based upon the most recently available population statistics from the Bureau of the Census; or

                 (ii) Extend coverage into Unserved Area on a secondary basis (see § 22.949), are permitted to
                      operate base transmitters and repeaters with an ERP greater than 800 watts/MHz (PSD) per
                      sector, up to a maximum of 2000 watts/MHz (PSD) per sector.

           (5) The ERP of mobile transmitters and auxiliary test transmitters must not exceed 7 watts.

     (b) Power flux density (PFD). Until May 12, 2024, each Cellular base station that operates at the higher ERP
         limits permitted under paragraphs (a)(3) and (4) of this section must be designed and deployed so as not
         to exceed a modeled PFD of 3000 microwatts/m2/MHz over at least 98% of the area within 1 km of the
         base station antenna, at 1.6 meters above ground level. To ensure its compliance with this requirement,
         the licensee must perform predictive modeling of the PFD values within at least 1 km of each base station
         antenna prior to commencing such operations and, thereafter, prior to making any site modifications that
         may increase the PFD levels around the base station. The modeling tools must take into consideration
         terrain and other local conditions and must use good engineering practices for the 800 MHz band.

     (c) Advance notification requirement. At least 30 days but not more than 90 days prior to activating a base
         station at the higher ERP limits permitted under paragraphs (a)(3) and (4) of this section, the Cellular
         licensee must provide written advance notice to any public safety licensee authorized in the frequency
         range 806–816 MHz/851–861 MHz with a base station located within a radius of 113 km of the Cellular
         base station to be deployed. The written notice shall be required only one time for each such cell site and
         is for informational purposes only; the public safety licensees are not afforded the right to accept or reject

47 CFR 22.913(c) (enhanced display)                                                                       page 97 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.913(d)
Public Mobile Services

           the activation or to unilaterally require changes in the operating parameters. The written notification must
           include the base station's location, ERP level, height of the transmitting antenna's center of radiation
           above ground level, and the timeframe for activation, as well as the Cellular licensee's contact
           information. Additional information shall be provided by the Cellular licensee upon request of a public
           safety licensee required to be notified under this paragraph (c). See also §§ 22.970 through 22.973.

     (d) Power measurement. Measurement of the ERP of Cellular base transmitters and repeaters must be made
         using an average power measurement technique. The peak-to-average ratio (PAR) of the transmission
         must not exceed 13 dB. Power measurements for base transmitters and repeaters must be made in
         accordance with either of the following:

           (1) A Commission-approved average power technique (see FCC Laboratory's Knowledge Database); or

           (2) For purposes of this section, peak transmit power must be measured over an interval of continuous
               transmission using instrumentation calibrated in terms of an 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,
               sensitivity, etc., so as to obtain a true peak measurement for the emission in question over the full
               bandwidth of the channel.

     (e) Height-power limit. The ERP of base transmitters must not exceed the amount that would result in an
         average distance to the service area boundary of 79.1 kilometers (49 miles) for Cellular systems
         authorized to serve the Gulf of Mexico MSA and 40.2 kilometers (25 miles) for all other Cellular systems.
         The average distance to the service area boundary is calculated by taking the arithmetic mean of the
         distances determined using the procedures specified in § 22.911 for the eight cardinal radial directions.

     (f) Exemptions from height-power limit. Licensees need not comply with the height-power limit in paragraph
         (e) of this section if either of the following conditions is met:

           (1) The proposed operation is coordinated with the licensees of all affected Cellular systems on the
               same channel block within 121 kilometers (75 miles) and concurrence is obtained; or

           (2) The licensee's base transmitter or repeater is operated at the ERP limits (W/MHz) specified above in
               paragraph (a)(1)(ii), (a)(2)(ii), (a)(3), or (a)(4) of this section.

[82 FR 17582, Apr. 12, 2017]

§ 22.917 Emission limitations for cellular equipment.
The rules in this section govern the spectral characteristics of emissions in the Cellular Radiotelephone Service.

     (a) Out of band emissions. The power of any emission outside of the authorized operating frequency ranges
         must be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log(P) dB.

     (b) Measurement procedure. Compliance with these rules is based on the use of measurement
         instrumentation employing a reference bandwidth as follows:

           (1) In the spectrum below 1 GHz, instrumentation should employ a reference bandwidth of 100 kHz or
               greater. In the 1 MHz bands immediately outside and adjacent to the frequency block, a resolution
               bandwidth of at least one percent of the emission bandwidth of the fundamental emission of the
               transmitter may be employed. A narrower resolution bandwidth is permitted in all cases to improve
               measurement accuracy, provided that the measured power is integrated over the full required

47 CFR 22.917(b)(1) (enhanced display)                                                                    page 98 of 117
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                                                                                                        47 CFR 22.917(b)(2)
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                reference bandwidth (i.e., 100 kHz or 1 percent of emission bandwidth, as specified). The emission
                bandwidth is defined as the width of the signal between two points, one below the carrier center
                frequency and one above the carrier center frequency, outside of which all emissions are attenuated
                at least 26 dB below the transmitter power.

           (2) In the spectrum above 1 GHz, instrumentation should employ a reference bandwidth of 1 MHz.

     (c) Alternative out of band emission limit. Licensees in this service may establish an alternative out of band
         emission limit to be used at specified band edge(s) in specified geographical areas, in lieu of that set forth
         in this section, pursuant to a private contractual arrangement of all affected licensees and applicants. In
         this event, each party to such contract shall maintain a copy of the contract in their station files and
         disclose it to prospective assignees or transferees and, upon request, to the FCC.

     (d) Interference caused by out of band emissions. If any emission from a transmitter operating in this service
         results in interference to users of another radio service, the FCC may require a greater attenuation of that
         emission than specified in this section.

[67 FR 77191, Dec. 17, 2002, as amended at 82 FR 17583, Apr. 12, 2017]

§ 22.921 [Reserved]
§ 22.923 Cellular system configuration.
Mobile stations communicate with and through base transmitters only. Base transmitters communicate with mobile
stations directly or through cellular repeaters. Auxiliary test stations may communicate with base or mobile stations
for the purpose of testing equipment.

§ 22.925 Prohibition on airborne operation of cellular telephones.
Cellular telephones installed in or carried aboard airplanes, balloons or any other type of aircraft must not be
operated while such aircraft are airborne (not touching the ground). When any aircraft leaves the ground, all cellular
telephones on board that aircraft must be turned off. The following notice must be posted on or near each cellular
telephone installed in any aircraft:

“The use of cellular telephones while this aircraft is airborne is prohibited by FCC rules, and the violation of this rule
could result in suspension of service and/or a fine. The use of cellular telephones while this aircraft is on the ground
is subject to FAA regulations.”

§§ 22.927-22.943 [Reserved]
§ 22.946 Construction period for Unserved Area authorizations.
The construction period applicable to new or modified Cellular facilities for which an authorization is granted
pursuant to the Unserved Area process is one year, beginning on the date the authorization is granted. To satisfy
this requirement, a Cellular system must be providing service to mobile stations operated by subscribers and
roamers. The licensee must notify the FCC (FCC Form 601) after the requirements of this section are met. See §
1.946 of this chapter. See also § 22.949.

[79 FR 72151, Dec. 5, 2014]

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                                                                                                         47 CFR 22.948
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§ 22.948 Geographic partitioning and spectrum disaggregation; spectrum leasing.
Cellular licensees may apply to partition any portion of their licensed Cellular Geographic Service Area (CGSA) or to
disaggregate their licensed spectrum at any time following the grant of their authorization(s). Parties seeking
approval for partitioning and disaggregation shall request from the FCC an authorization for partial assignment of a
license pursuant to § 1.948 of this chapter. See also paragraph (d) of this section regarding spectrum leasing.

     (a) Partitioning, disaggregation, or combined partitioning and disaggregation. Applicants must file FCC Form
         603 (“Assignment of Authorization and Transfer of Control”) pursuant to § 1.948 of this chapter, as well
         as GIS map files and a reduced-size PDF map pursuant to § 22.953 for both the assignor and assignee.

     (b) Field strength limit. For purposes of partitioning and disaggregation, Cellular systems must be designed
         so as to comply with § 22.983.

     (c) License term. The license term for a partitioned license area and for disaggregated spectrum will be the
         remainder of the original license term.

     (d) Spectrum leasing. Cellular spectrum leasing is subject to all applicable provisions of subpart X of part 1 of
         this chapter as well as the provisions of paragraph (a) of this section, except that applicants must file FCC
         Form 608 (“Application or Notification for Spectrum Leasing Arrangement or Private Commons
         Arrangement”), not FCC Form 603.

[79 FR 72152, Dec. 5, 2014]

§ 22.949 Unserved Area licensing; minimum coverage requirements.
     (a) The Unserved Area licensing process described in this section is on-going and applications may be filed at
         any time, subject to the following coverage requirements:

           (1) Applicants for authority to operate a new Cellular system or expand an existing Cellular Geographic
               Service Area (CGSA) in Unserved Area must propose a CGSA or CGSA expansion of at least 130
               contiguous square kilometers (50 contiguous square miles) using the methodology of § 22.911.

           (2) Applicants for authority to operate a new Cellular system must not propose coverage of water areas
               only (or water areas and uninhabited islands or reefs only), except for Unserved Area in the Gulf of
               Mexico Service Area.

     (b) There is no limit to the number of Unserved Area applications that may be granted on each channel block
         of each CMA that is subject to the procedures of this section. Consequently, Unserved Area applications
         are mutually exclusive only if the proposed CGSAs would overlap. Mutually exclusive applications are
         processed using the general procedures under § 22.131.

     (c) Unserved Area applications under this section may propose a CGSA covering more than one CMA. Each
         Unserved Area application must request authorization for only one CGSA and must not propose a CGSA
         overlap with an existing CGSA.

     (d) Settlements among some, but not all, applicants with mutually exclusive applications for Unserved Area
         (partial settlements) under this section are prohibited. Settlements among all applicants with mutually
         exclusive applications under this section (full settlements) are allowed and must be filed no later than the
         date that the FCC Form 175 (short-form) is filed.

[79 FR 72152, Dec. 5, 2014]

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                                                                                                          47 CFR 22.950
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§ 22.950 Provision of service in the Gulf of Mexico Service Area (GMSA).
The GMSA has been divided into two areas for licensing purposes, the Gulf of Mexico Exclusive Zone (GMEZ) and
the Gulf of Mexico Coastal Zone (GMCZ). This section describes these areas and sets forth the process for
licensing facilities in these two respective areas within the GMSA.

     (a) The GMEZ and GMCZ are defined as follows:

           (1) Gulf of Mexico Exclusive Zone. The geographical area within the Gulf of Mexico Service Area that lies
               between the coastline line and the southern demarcation line of the Gulf of Mexico Service Area,
               excluding the area comprising the Gulf of Mexico Coastal Zone.

           (2) Gulf of Mexico Coastal Zone. The geographical area within the Gulf of Mexico Service Area that lies
               between the coast line of Florida and a line extending approximately twelve nautical miles due south
               from the coastline boundary of the States of Florida and Alabama, and continuing along the west
               coast of Florida at a distance of twelve nautical miles from the shoreline. The line is defined by Great
               Circle arcs connecting the following points (geographical coordinates listed as North Latitude, West
               Longitude) consecutively in the order listed:

                 (i)   30°16′49″ N 87°31′06″ W

                 (ii) 30°04′35″ N 87°31′06″ W

                (iii) 30°10′56″ N 86°26′53″ W

                (iv) 30°03′00″ N 86°00′29″ W

                 (v) 29°33′00″ N 85°32′49″ W

                (vi) 29°23′21″ N 85°02′06″ W

                (vii) 29°49′44″ N 83°59′02″ W

                (viii) 28°54′00″ N 83°05′33″ W

                (ix) 28°34′41″ N 82°53′38″ W

                 (x) 27°50′39″ N 83°04′27″ W

                (xi) 26°24′22″ N 82°23′22″ W

                (xii) 25°41′39″ N 81°49′40″ W

                (xiii) 24°59′02″ N 81°15′04″ W

                (xiv) 24°44′23″ N 81°57′04″ W

                (xv) 24°32′37″ N 82°02′01″ W

     (b) Service Area Boundary Calculation. The service area boundary of a cell site located within the Gulf of
         Mexico Service Area is calculated pursuant to § 22.911(a)(2). Otherwise, the service area boundary is
         calculated pursuant to § 22.911(a)(1) or § 22.911(b).

     (c) Gulf of Mexico Exclusive Zone (GMEZ). GMEZ licensees have an exclusive right to provide Cellular service
         in the GMEZ, and may add, modify, or remove facilities anywhere within the GMEZ without prior FCC
         approval. There is no Unserved Area licensing procedure for the GMEZ.

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     (d) Gulf of Mexico Coastal Zone (GMCZ). The GMCZ is subject to the Unserved Area licensing procedures set
         forth in § 22.949.

[67 FR 9610, Mar. 4, 2002, as amended at 79 FR 72152, Dec. 5, 2014]

§ 22.951 [Reserved]
§ 22.953 Content and form of applications for Cellular Unserved Area authorizations.
Applications for authority to operate a new Cellular system or to modify an existing Cellular system must comply
with the specifications in this section.

     (a) New Systems. In addition to information required by subpart B of this part and by FCC Form 601,
         applications for an Unserved Area authorization to operate a Cellular system must comply with all
         applicable requirements set forth in part 1 of this chapter, including the requirements specified in §§
         1.913, 1.923, and 1.924, and must include the information listed below. Geographical coordinates must be
         correct to ±1 second using the NAD 83 datum.

           (1) Exhibit I—Geographic Information System (GIS) map files. Geographic Information System (GIS) map
               files must be submitted showing the entire proposed CGSA, the new cell sites (transmitting antenna
               locations), and the service area boundaries of additional and modified cell sites that extend into
               Unserved Area being claimed as CGSA. See § 22.911. The FCC will specify the file format required
               for the GIS map files, which are to be submitted electronically via the Universal Licensing System
               (ULS).

           (2) Exhibit II—Reduced-size PDF map. This map must be 81⁄2 × 11 inches (if possible, a proportional
               reduction of a 1:500,000 scale map). The map must have a legend, a distance scale, and correctly
               labeled latitude and longitude lines. The map must be clear and legible. The map must accurately
               show the entire proposed CGSA, the new cell sites (transmitting antenna locations), the service area
               boundaries of additional and modified cell sites that extend beyond the CGSA, and the relevant
               portions of the CMA boundary. See § 22.911.

           (3) Exhibit III—Technical Information. In addition, upon request by an applicant, licensee, or the FCC, a
               Cellular applicant or licensee of whom the request is made shall furnish the antenna type, model, the
               name of the antenna manufacturer, antenna gain in the maximum lobe, the beam width of the
               maximum lobe of the antenna, a polar plot of the horizontal gain pattern of the antenna, antenna
               height to tip above ground level, the height of the center of radiation of the antenna above the
               average terrain, the maximum effective radiated power, and the electric field polarization of the wave
               emitted by the antenna when installed as proposed to the requesting party within ten (10) days of
               receiving written notification.

         (4)–(10) [Reserved]

          (11) Additional information. The FCC may request information not specified in FCC Form 601 or in
               paragraphs (a)(1) through (a)(3) of this section as necessary to process an application.

     (b) Existing systems—major modifications. Licensees making major modifications pursuant to § 1.929(a) and
         (b) of this chapter must file FCC Form 601 and comply with the requirements of paragraph (a) of this
         section.

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                                                                                                        47 CFR 22.953(c)
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     (c) Existing systems—minor modifications. Licensees making minor modifications pursuant to § 1.929(k) of
         this chapter must file FCC Form 601 or FCC Form 603, provided, however, that a resulting reduction in
         coverage within the CGSA is not subject to this requirement. See § 1.947(b). See also § 22.169. If the
         modification involves a contract SAB extension into or from the Gulf of Mexico Exclusive Zone, it must
         include a certification that the required written consent has been obtained. See §§ 22.912(c) and 22.950.

[79 FR 72152, Dec. 5, 2014, as amended at 82 FR 17584, Apr. 12, 2017]

§§ 22.955-22.957 [Reserved]
§ 22.959 Rules governing processing of applications for initial systems.
Pending applications for authority to operate the first cellular system on a channel block in an MSA or RSA market
continue to be processed under the rules governing the processing of such applications that were in effect when
those applications were filed, unless the Commission determines otherwise in a particular case.

§ 22.960 Cellular operations in the Chambers, TX CMA (CMA672–A).
This section applies only to Cellular systems operating on channel block A of the Chambers, Texas CMA
(CMA672–A).

     (a) The geographic boundary of CMA672–A is deemed to be the Cellular Geographic Service Area (CGSA)
         boundary. This CGSA boundary is not determined using the methodology of § 22.911. The licensee of
         CMA672–A may not propose an expansion of this CGSA into another CMA unless and until it meets the
         construction requirement set forth in paragraph (b)(2) of this section.

     (b) A licensee that holds the license for CMA672–A must be providing signal coverage and offering service
         as follows (and in applying these geographic construction benchmarks, the licensee is to count total land
         area):

           (1) To at least 35% of the geographic area of CMA672–A within four years of the grant of such
               authorization; and

           (2) To at least 70% of the geographic area of its license authorization by the end of the license term.

     (c) After it has met each of the requirements of paragraphs (b)(1) and (b)(2), respectively, of this section, the
         licensee that holds the license for CMA672–A must notify the FCC that it has met the requirement by
         submitting FCC Form 601, including GIS map files and other supporting documents showing compliance
         with the requirement. See § 1.946 of this chapter. See also § 22.953.

     (d) Failure to meet the construction requirements set forth in paragraphs (b)(1) and (b)(2) of this section by
         each of the applicable deadlines will result in automatic termination of the license for CMA672–A and its
         return to the Commission for future re-licensing subject to competitive bidding procedures. The licensee
         that fails to meet each requirement of this section by the applicable deadline set forth in paragraphs
         (b)(1) and (b)(2) shall be ineligible to regain the license for CMA672–A.

[79 FR 72153, Dec. 5, 2014]

§ 22.961 Cellular licenses subject to competitive bidding.
     (a) The following applications for Cellular licensed area authorizations are subject to competitive bidding:

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                                                                                                        47 CFR 22.961(a)(1)
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           (1) Mutually exclusive applications for Unserved Area filed after July 26, 1993; and

           (2) Mutually exclusive applications for the initial authorization for CMA672–A (Chambers, TX).

     (b) The competitive bidding procedures set forth in § 22.229 and the general competitive bidding procedures
         set forth in subpart Q of part 1 of this chapter will apply.

[79 FR 72153, Dec. 5, 2014]

§§ 22.962-22.969 [Reserved]
§ 22.970 Unacceptable interference to part 90 non-cellular 800 MHz licensees from cellular
radiotelephone or part 90–800 MHz cellular systems.
     (a) Definition. Except as provided in 47 CFR 90.617(k), unacceptable interference to non-cellular part 90
         licensees in the 800 MHz band from cellular radiotelephone or part 90–800 MHz cellular systems 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) A median desired signal of −104 dBm or higher, as measured at the R.F. input of the
                           receiver of a mobile unit; or

                       (B) A median desired signal of −101 dBm or higher, 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, below; 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, 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
               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 paragraphs
               (a)(1)(i) of this section at which the licensee using such non-compliant transceiver is entitled to
               interference protection.

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                                                                                                        47 CFR 22.970(b)
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     (b) Minimum receiver requirements. Voice transceivers capable of operating in the 806–824 MHz portion of
         the 800 MHz band 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.

[69 FR 67834, Nov. 22, 2004, as amended at 70 FR 76707, Dec. 28, 2005]

§ 22.971 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 part 90 of this chapter licensee in the
         800 MHz band, as defined in § 22.970, 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 § 22.972(c). 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 part 90 of this chapter licensee
         in the 800 MHz band, as defined in § 22.970, such licensees shall be jointly and severally responsible for
         abating interference, with full cooperation and utmost diligence, in the shortest practicable time.

           (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 § 22.972(c). This joint and several responsibility rule
               applies to all forms of interference, including out-of-band emissions and intermodulation.

           (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 part 90 of this chapter 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 67834, Nov. 22, 2004, as amended at 70 FR 76707, Dec. 28, 2005]

§ 22.972 Interference resolution procedures.
     (a) Initial notification.

           (1) Cellular Radiotelephone licensees may receive initial notification of interference from non-cellular
               part 90 of this chapter licensees in the 800 MHz band pursuant to § 90.674(a) of this chapter.

           (2) Cellular Radiotelephone licensees, in conjunction with part 90 ESMR licensees, shall establish an
               electronic means of receiving the initial notification described in § 90.674(a) of this chapter. The
               electronic system must be designed so that all appropriate Cellular Radiotelephone licensees and
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                                                                                                      47 CFR 22.972(a)(3)
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                part 90 ESMR 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) Cellular Radiotelephone licensees must respond to the initial notification described in § 90.674(a) of
               this chapter, as soon as possible and no later than 24 hours after receipt of notification from a part
               90 public safety/CII licensee. This response time may be extended to 48 hours after receipt from
               other part 90 non-cellular licensees provided affected communications on these systems are not
               safety related.

     (b) Interference analysis. Cellular Radiotelephone licensees—who receive an initial notification described in §
         90.674(a) of this chapter—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 part 90 of this chapter public safety/CII licensee. This response time may be extended
         to 96 hours after the initial complaint from other part 90 of this chapter 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 Cellular Radiotelephone and part 90 of this chapter—800 MHz cellular system licensees who are
               responsible for causing unacceptable interference shall take all affirmative measures to resolve such
               interference. Cellular Radiotelephone licensees found to contribute to unacceptable interference, as
               defined in § 22.970, shall resolve such interference in the shortest time practicable. Cellular
               Radiotelephone licensees and part 90 of this chapter—800 MHz cellular system 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 the Cellular Radiotelephone and/or part 90 of this
               chapter—800 MHz cellular system licensees, whose affirmative measures may include, but not be
               limited to, the following techniques:

                 (i)   Increasing the desired power of the public safety/CII signal;

                 (ii) Decreasing the power of the part 90 ESMR and/or Cellular Radiotelephone system signal;

                (iii) Modifying the part 90 ESMR and/or Cellular Radiotelephone system antenna height;

                (iv) Modifying the part 90 ESMR and/or Cellular Radiotelephone system antenna characteristics;

                 (v) Incorporating filters into part 90 ESMR and/or Cellular Radiotelephone transmission equipment;

                (vi) Permanently changing part 90 ESMR and/or Cellular Radiotelephone frequencies; and

                (vii) Supplying interference-resistant receivers to the affected public safety/CII licensee(s). If this
                      technique is used, in all circumstances, Cellular Radiotelephone and/or part 90 of this chapter
                      ESMR licensees shall be responsible for all costs thereof.

           (2) Whenever short-term interference abatement measures prove inadequate, the affected part 90 of
               this chapter non-cellular licensee shall, consistent with but not compromising safety, make all
               necessary concessions to accepting interference until a longer-term remedy can be implemented.

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47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.972(c)(3)
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           (3) Discontinuing operations when clear imminent danger exists. When a part 90 of this chapter 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 67834, Nov. 22, 2004, as amended at 70 FR 76707, Dec. 28, 2005; 71 FR 69038, Nov. 29, 2006]

§ 22.973 Information exchange.
     (a) Prior notification. Public safety/CII licensees may notify a part 90 ESMR or cellular radiotelephone
         licensee that they wish to receive prior notification of the activation or modification of part 90 ESMR or
         cellular radiotelephone cell sites in their area. Thereafter, the part 90 ESMR or 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 notification. The prior 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 licensee to advise the part 90 of this chapter ESMR or Cellular Radiotelephone
               licensee whether it believes a proposed cell will generate unacceptable interference;

           (2) Permit Cellular Radiotelephone or part 90 of this chapter ESMR 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.

[69 FR 67834, Nov. 22, 2004]

47 CFR 22.973(b)(3) (enhanced display)                                                                       page 107 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.983
Public Mobile Services

§ 22.983 Field strength limit.
     (a) Subject to paragraphs (b) and (c) of this section, a licensee's predicted or measured median field strength
         limit must not exceed 40 dBµV/m at any given point along the Cellular Geographic Service Area (CGSA)
         boundary of a neighboring licensee on the same channel block, unless the affected licensee of the
         neighboring CGSA on the same channel block agrees to a different field strength. This also applies to
         CGSAs partitioned pursuant to § 22.948.

     (b) Gulf of Mexico Service Area. Notwithstanding the field strength limit provision set forth in paragraph (a) of
         this section, licensees in or adjacent to the Gulf of Mexico Exclusive Zone are subject to § 22.912(c)
         regarding service area boundary extensions. See § 22.912(c).

     (c) Cellular licensees shall be subject to all applicable provisions and requirements of treaties and other
         international agreements between the United States government and the governments of Canada and
         Mexico, notwithstanding paragraphs (a) and (b) of this section.

[79 FR 72153, Dec. 5, 2014]

Subpart I—Offshore Radiotelephone Service
§ 22.1001 Scope.
The rules in this subpart govern the licensing and operation of offshore radiotelephone stations. The licensing and
operation of these stations and systems is also subject to rules elsewhere in this part that apply generally to the
public mobile services. However, in case of conflict, the rules in this subpart govern.

§ 22.1003 Eligibility.
Any eligible entity (see § 22.7) may apply for central station license(s) and/or offshore subscriber licenses under
this subpart.

[70 FR 19312, Apr. 13, 2005]

§ 22.1005 Priority of service.
Facilities in the Offshore Radiotelephone Service are intended primarily for rendition of public message service
between offshore subscriber and central stations. However, they may also be used to render private leased line
communication service, provided that such usage does not reduce or impair the extent or quality of communication
service which would be available, in the absence of private leased line service, to the general public receiving or
subsequently requesting public message service from an offshore central station.

§ 22.1007 Channels for offshore radiotelephone systems.
The channels listed in this section are allocated for paired assignment to transmitters located in the specified
geographical zones that provide offshore radiotelephone service. All channels have a bandwidth of 20 kHz and are
designated by their center frequencies in MegaHertz.

     (a) Zone A—Southern Louisiana. The geographical area in Zone A is bounded as follows:

     From longitude W.87°45′ on the East to longitude W.94°00′ on the West and from the 4.8 kilometer (3 mile) limit
     along the Gulf of Mexico shoreline on the North to the limit of the Outer Continental Shelf on the South.

47 CFR 22.1007(a) (enhanced display)                                                                    page 108 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                 47 CFR 22.1007(a)(1)
Public Mobile Services

           (1) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for voice-grade general
               communications:

                         Central                    Subscriber          Central                 Subscriber
                 488.025                  491.025                488.225              491.225
                 488.050                  491.050                488.250              491.250
                 488.075                  491.075                488.275              491.275
                 488.100                  491.100                488.300              491.300
                 488.125                  491.125                488.325              491.325
                 488.150                  491.150                488.350              491.350
                 488.175                  491.175                488.375              491.375
                 488.200                  491.200                488.400              491.400

           (2) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for voice-grade general
               communications and private line service:

                         Central                    Subscriber          Central                 Subscriber
                 488.425                  491.425                488.575              491.575
                 488.450                  491.450                488.600              491.600
                 488.475                  491.475                488.625              491.625
                 488.500                  491.500                488.650              491.650
                 488.525                  491.525                488.675              491.675
                 488.550                  491.550                488.700              491.700

           (3) These channels may be assigned for use by relay stations in systems where it would be impractical
               to provide offshore radiotelephone service without the use of relay stations.

                         Central                    Subscriber          Central                 Subscriber
                 488.725                  491.725                488.775              491.775
                 488.750                  491.750                488.800              491.800

           (4) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for emergency
               communications involving protection of life and property.

                         Central                    Subscriber          Central                 Subscriber
                 488.825                  491.825                488.875              491.875
                 488.850                  491.850                488.900              491.900

47 CFR 22.1007(a)(4) (enhanced display)                                                               page 109 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                      47 CFR 22.1007(a)(5)
Public Mobile Services

           (5) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for emergency auto alarm and
               voice transmission pertaining to emergency conditions only.

                                         Central                                  Subscriber
                          488.950                               491.950

           (6) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for emergency shut-off remote
               control telemetry, environmental data acquisition and disseminations, or facsimile transmissions.

                         Central                   Subscriber               Central                  Subscriber
                 489.000                 492.000                     489.200               492.200
                 489.025                 492.025                     489.225               492.225
                 489.050                 492.050                     489.250               492.250
                 489.075                 492.075                     489.275               492.275
                 489.100                 492.100                     489.300               492.300
                 489.125                 492.125                     489.325               492.325
                 489.150                 492.150                     489.350               492.350
                 489.175                 492.175                     489.375               492.375

           (7) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for private line service:

                         Central                   Subscriber               Central                  Subscriber
                 489.400                 492.400                     489.725               492.725
                 489.425                 492.425                     489.750               492.750
                 489.450                 492.450                     489.775               492.775
                 489.475                 492.475                     489.800               492.800
                 489.500                 492.500                     489.825               492.825
                 489.525                 492.525                     489.850               492.850
                 489.550                 492.550                     489.875               492.875
                 489.575                 492.575                     489.900               492.900
                 489.600                 492.600                     489.925               492.925
                 489.625                 492.625                     489.950               492.950
                 489.650                 492.650                     489.975               492.975
                 489.675                 492.675                     490.000               493.000
                 489.700                 492.700

           (8) Interstitial channels. Interstitial channels are those with center frequencies offset by ±12.5 kHz from
               the listed center frequencies. The FCC may assign interstitial channels to offshore stations in Zone A
               subject to the following conditions:

                 (i)   Offshore stations transmitting on interstitial channels must be located east of W.92° longitude.

47 CFR 22.1007(a)(8)(i) (enhanced display)                                                                 page 110 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                 47 CFR 22.1007(a)(8)(ii)
Public Mobile Services

                 (ii) Operations on interstitial channels are considered to be secondary to operations on channels
                      with the listed center frequencies.

                (iii) Offshore stations operating on interstitial channels must be used only for voice grade general
                      communications or to provide for private line service.

                      Note to paragraph (a) of § 22.1007: These channels are contained in UHF TV Channel
                      17.

     (b) Zone B—Southern Louisiana—Texas.

           (1) The geographical area in Zone B is bounded as follows:

          From longitude W.87°45′ on the East to longitude W.95°00′ on the West and from the 4.8 kilometer (3 mile)
          limit along the Gulf of Mexico shoreline on the North to the limit of the Outer Continental Shelf on the
          South.

           (2) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for voice-grade general
               communications and private line service:

                         Central                    Subscriber            Central                   Subscriber
                 485.025                  482.025                  486.025                483.025
                 485.050                  482.050                  486.050                483.050
                 485.075                  482.075                  486.075                483.075
                 485.100                  482.100                  486.100                483.100
                 485.125                  482.125                  486.125                483.125
                 485.150                  482.150                  485.150                483.150
                 485.175                  482.175                  486.175                483.175
                 485.200                  482.200                  486.200                483.200
                 485.225                  482.225                  486.225                483.225
                 485.250                  482.250                  486.250                483.250
                 485.275                  482.275                  486.275                483.275
                 485.300                  482.300                  486.300                483.300
                 485.325                  482.325                  486.325                483.325
                 485.350                  482.350                  486.350                483.350
                 485.375                  482.375                  486.375                483.375
                 485.400                  482.400                  486.400                483.400
                 485.425                  482.425                  486.425                483.425
                 485.450                  482.450                  486.450                483.450
                 485.475                  482.475                  486.475                483.475
                 485.500                  482.500                  486.500                483.500
                 485.525                  482.525                  486.525                483.525
                 485.550                  482.550                  484.550                483.550
                 485.575                  482.575                  486.575                483.575

47 CFR 22.1007(b)(2) (enhanced display)                                                                    page 111 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.1007(c)
Public Mobile Services

                         Central                    Subscriber              Central                 Subscriber
                 485.600                  482.600                     486.600             483.600
                 485.625                  482.625                     486.625             483.625
                 485.650                  482.650                     486.650             483.650
                 485.675                  482.675                     486.675             483.675
                 485.700                  482.700                     486.700             483.700
                 485.725                  482.725                     486.725             483.725
                 485.750                  482.750                     486.750             483.750
                 485.775                  482.775                     486.775             483.775
                 485.800                  482.800                     486.800             483.800
                 485.825                  482.825                     486.825             483.825
                 485.850                  482.850                     486.850             483.850
                 485.875                  482.875                     486.875             483.875
                 485.900                  482.900                     486.900             483.900
                 485.925                  482.925                     486.925             483.925
                 485.950                  482.950                     486.950             483.950
                 485.975                  482.975                     486.975             483.975
                 486.000                  483.000                     487.050             480.050

           Note to paragraph (b) of § 22.1007: These channels are contained in UHF TV Channel 16.

     (c) Zone C—Southern Texas. The geographical area in Zone C is bounded as follows:

     Longitude W.94°00′ on the East, the 4.8 kilometer (3 mile) limit on the North and West, a 282 kilometer (175
     mile) radius from the reference point at Linares, N.L., Mexico on the Southwest, latitude N.26°00′ on the South,
     and the limits of the outer continental shelf on the Southeast.

           (1) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for emergency auto alarm and
               voice transmission pertaining to emergency conditions only.

                                          Central                                 Subscriber
                         476.950                                  479.950

           (2) These channels may be assigned for use by offshore central (base/fixed) or subscriber stations
               (fixed, temporary fixed, surface and/or airborne mobile) as indicated, for voice-grade general
               communications and private line service:

 476.025                                                479.025
 476.050                                                479.050
 476.075                                                479.075
 476.100                                                479.100
 476.125                                                479.125

47 CFR 22.1007(c)(2) (enhanced display)                                                                    page 112 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                        47 CFR 22.1007(c)(2)
Public Mobile Services

 476.150                                      479.150
 476.175                                      479.175
 476.200                                      479.200
 476.225                                      479.225
 476.250                                      479.250
 476.275                                      479.275
 476.300                                      479.300
 476.325                                      479.325
 476.350                                      479.350
 476.375                                      479.375
 476.400                                      479.400
 476.425                                      479.425
 476.450                                      479.450
 476.475                                      479.475
 476.500                                      479.500
 476.525                                      479.525
 476.550                                      479.550
 476.575                                      479.575
 476.600                                      479.600
 476.625                                      479.625
 476.650                                      479.650
 476.675                                      479.675
 476.700                                      479.700
 476.725                                      479.725
 476.750                                      479.750
 476.775                                      479.775
 476.800                                      479.800
 476.825                                      479.825
 476.850                                      479.850
 476.875                                      479.875
 476.900                                      479.900
 477.000                                      480.000
 477.025                                      480.025
 477.075                                      480.075
 477.100                                      480.100
 477.125                                      480.125
 477.150                                      480.150
 477.175                                      480.175
 477.200                                      480.200
 477.225                                      480.225
 477.250                                      480.250

47 CFR 22.1007(c)(2) (enhanced display)                      page 113 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                       47 CFR 22.1009
Public Mobile Services

 477.275                                                  480.275
 477.300                                                  480.300
 477.325                                                  480.325
 477.350                                                  480.350
 477.375                                                  480.375
 477.400                                                  480.400
 477.425                                                  480.425
 477.450                                                  480.450
 477.475                                                  480.475
 477.500                                                  480.500
 477.525                                                  480.525
 477.550                                                  480.550
 477.575                                                  480.575
 477.600                                                  480.600
 477.625                                                  480.625
 477.650                                                  480.650
 477.675                                                  480.675
 477.700                                                  480.700
 477.725                                                  480.725
 477.750                                                  480.750
 477.775                                                  480.775
 477.800                                                  480.800
 477.825                                                  480.825
 477.850                                                  480.850
 477.875                                                  480.875
 477.900                                                  480.900
 477.925                                                  480.925
 477.950                                                  480.950
 477.975                                                  480.975

[59 FR 59507, Nov. 17, 1994; 60 FR 9891, Feb. 22, 1995]

§ 22.1009 Transmitter locations.
The rules in this section establish limitations on the locations from which stations in the Offshore Radiotelephone
Service may transmit.

     (a) All stations. Offshore stations must not transmit from locations outside the boundaries of the appropriate
         zones specified in § 22.1007. Offshore stations must not transmit from locations within 241 kilometers
         (150 miles) of any full-service television station that transmits on the TV channel containing the channel
         on which the offshore station transmits.

47 CFR 22.1009(a) (enhanced display)                                                                    page 114 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                        47 CFR 22.1009(b)
Public Mobile Services

     (b) Airborne subscriber stations. Airborne subscriber stations must not transmit from altitudes exceeding 305
         meters (1000 feet) above mean sea level. Airborne mobile stations in Zone A must not transmit from
         locations within 129 kilometers (80 miles) of Lake Charles, Louisiana. Airborne mobile stations in Zone B
         must not transmit from locations within 129 kilometers (80 miles) of Lafayette, Louisiana. Airborne
         mobile stations in Zone C must not transmit from locations within 129 kilometers (80 miles) of Corpus
         Christi or locations within 129 kilometers (80 miles) of Houston, Texas.

§ 22.1011 Antenna height limitations.
The antenna height of offshore stations must not exceed 61 meters (200 feet) above mean sea level. The antenna
height of offshore surface mobile stations must not exceed 10 meters (30 feet) above the waterline.

§ 22.1013 Effective radiated power limitations.
The effective radiated power (ERP) of transmitters in the Offshore Radiotelephone Service must not exceed the
limits in this section.

     (a) Maximum power. The ERP of transmitters in this service must not exceed 1000 Watts under any
         circumstances.

     (b) Mobile transmitters. The ERP of mobile transmitters must not exceed 100 Watts. The ERP of mobile
         transmitters, when located within 32 kilometers (20 miles) of the 4.8 kilometer (3 mile) limit, must not
         exceed 25 Watts. The ERP of airborne mobile stations must not exceed 1 Watt.

     (c) Protection for TV Reception. The ERP limitations in this paragraph are intended to reduce the likelihood
         that interference to television reception from offshore radiotelephone operations will occur.

           (1) Co-channel protection. The ERP of offshore stations must not exceed the limits in Table I–1 of this
               section. The limits depend upon the height above mean sea level of the offshore transmitting
               antenna and the distance between the antenna location of the offshore transmitter and the antenna
               location of the main transmitter of the nearest full-service television station that transmits on the TV
               channel containing the channel on which the offshore station transmits.

           (2) Adjacent channel protection. The ERP of offshore stations located within 128.8 kilometers (80 miles)
               of the main transmitter antenna of a full service TV station that transmits on a TV channel adjacent
               to the TV channel which contains the channel on which the offshore station transmits must not
               exceed the limits in the Table I–2 of § 22.1015. The limits depend upon the height above mean sea
               level of the offshore transmitting antenna and the distance between the location of the offshore
               transmitter and the 4.8 kilometer (3 mile) limit.

                              Table I–1—Maximum ERP (Watts)

       Distance            30 meters (100 feet)      45 meters (150 feet)      61 meters (200 feet)
 338 km (210 mi)                              1000                    1000                       1000
 330 km (205 mi)                              1000                      900                       800
 2 km (200 mi)                                 800                      710                       630
 314 km (195 mi)                               590                      520                       450
 306 km (190 mi)                               450                      400                       330
 298 km (185 mi)                               320                      280                       240

47 CFR 22.1013(c)(2) (enhanced display)                                                                    page 115 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                                47 CFR 22.1015
Public Mobile Services

       Distance            30 meters (100 feet)         45 meters (150 feet)        61 meters (200 feet)
 290 km (180 mi)                              250                             210                      175
 282 km (175 mi)                              180                             150                      130
 274 km (170 mi)                              175                             110                      100
 266 km (165 mi)                                  95                           80                          70
 258 km (160 mi)                                  65                           55                          50
 249 km (155 mi)                                  50                           40                          35
 241 km (150 mi)                                  35                           30                          25

§ 22.1015 Repeater operation.
Offshore central stations may be used as repeater stations provided that the licensee is able to maintain control of
the station, and in particular, to turn the transmitter off, regardless of whether associated subscriber stations are
transmitting at the time.

                              Table I–2—Maximum ERP (Watts)

      Distance from the 4.8 km (3 mi) limit            30 meters (100 feet)         61 meters (200 feet)
 6.4 km (4 mi)                                                                25                            6
 8.0 km (5 mi)                                                                40                           10
 9.7 km (6 mi)                                                                65                           15
 11.3 km (7 mi)                                                           100                              25
 12.9 km (8 mi)                                                           150                              35
 14.5 km (9 mi)                                                           215                              50
 16.1 km (10 mi)                                                          295                              70
 17.7 km (11 mi)                                                          400                          100
 19.3 km (12 mi)                                                          530                          130
 20.9 km (13 mi)                                                          685                          170
 22.5 km (14 mi)                                                          870                          215
 24.1 km (15 mi)                                                         1000                          270
 25.7 km (16 mi)                                                         1000                          415
 27.4 km (17 mi)                                                         1000                          505
 29.0 km (18 mi)                                                         1000                          610
 30.6 km (19 mi)                                                         1000                          730
 32.2 km (20 mi)                                                         1000                          865
 33.8 km (21 mi)                                                         1000                         1000

§ 22.1025 Permissible communications.
Offshore central stations must communicate only with subscriber stations (fixed, temporary-fixed, mobile and
airborne). Offshore subscriber stations must normally communicate only with and through offshore central
stations. Stations in the Offshore Radiotelephone Service may communicate through relay stations authorized in
this service.

47 CFR 22.1025 (enhanced display)                                                                               page 116 of 117
47 CFR Part 22 (up to date as of 2/20/2024)
                                                                                                         47 CFR 22.1031
Public Mobile Services

§ 22.1031 Temporary fixed stations.
The FCC may, upon proper application therefor, authorize the construction and operation of temporary fixed stations
in the Offshore Radiotelephone service to be used only when the service of permanent fixed stations is disrupted by
storms or emergencies or is otherwise unavailable.

     (a) Six month limitation. If it is necessary for a temporary fixed station to remain at the same location for
         more than six months, the licensee of that station must apply for authorization to operate the station at
         the specific location at least 30 days before the end of the six month period.

     (b) International communications. Communications between the United States and Mexico must not be
         carried using a temporary fixed station without prior authorization from the FCC. Licensees desiring to
         carry such communications should apply sufficiently in advance to allow for the time necessary to
         coordinate with Canada or Mexico.

§ 22.1035 Construction period.
The construction period (see § 22.142) for offshore stations is 18 months.

§ 22.1037 Application requirements for offshore stations.
Applications for new Offshore Radiotelephone Service stations must contain an exhibit showing that:

     (a) The applicant has notified all licensees of offshore stations located within 321.8 kilometers (200 miles) of
         the proposed offshore station, by providing the following data, at least 30 days before filing the
         application:

           (1) The name, business address, channel coordinator, and telephone number of the applicant;

           (2) The location and geographical coordinates of the proposed station;

           (3) The channel and type of emission;

           (4) The height and type of antenna;

           (5) The bearing of the main lobe of the antenna; and,

           (6) The effective radiated power.

     (b) The proposed station will not interfere with the primary ORS channels by compliance with the following
         separations:

           (1) Co-channel to a distance of 241.4 kilometers (150 miles).

           (2) If interstitial channels are used, adjacent channels (±12.5 kHz) to a distance of 80.5 kilometers (50
               miles).

           (3) Third order intermodulation channels (±12.5 kHz) to a distance of 32.2 kilometers (20 miles).

           (4) If the proposed transmitting antenna site is located west of longitude W.93°40′, and within 32.2
               kilometers (20 miles) of the shoreline, and proposed use of the channels listed in § 22.1007(b), no
               third-order intermodulation interference would be caused to any base or mobile station using the
               channels between 488 and 494 MHz.

47 CFR 22.1037(b)(4) (enhanced display)                                                                  page 117 of 117