Federal Register / Vol. 86, No. 185 / Tuesday, September 28, 2021 / Rules and Regulations 53563 

FEDERAL COMMUNICATIONS 

COMMISSION 

47 CFR Part 95 

[WT Docket No. 10–119; FCC 21–90; FRS 

45644] 

Review of the Commission’s Personal 

Radio Services Rules 

AGENCY: Federal Communications 

Commission. 

ACTION: Final rule. 

SUMMARY: In this document, the Federal 

Communications Commission 

(Commission) addresses three petitions 

for reconsideration of the 2017 Report 

and Order in this proceeding, which 

reorganized and updated the Personal 

Radio Services rules. Cobra Electronics 

Corporation (Cobra), Motorola 

Solutions, Inc. (Motorola), and 

Medtronic, Inc. (Medtronic) each filed a 

petition for reconsideration of particular 

aspects of the Report and Order 

regarding specific services. In the 

Memorandum Opinion and Order on 

Reconsideration, the Commission finds 

that the public interest will be served by 

granting the petitions and making some 

additional rule corrections. 

DATES: Effective date: October 28, 2021. 

ADDRESSES: Federal Communications 

Commission, 45 L Street NE, 

Washington, DC 20554. 

FOR FURTHER INFORMATION CONTACT: 

Thomas Derenge of the Wireless 

Telecommunications Bureau, Mobility 

Division, at (202) 418–2451 or 

Thomas.Derenge@fcc.gov, or Melissa 

Conway of the Wireless 

Telecommunications Bureau, Mobility 

Division, at (202) 418–2887 or 

Melissa.Conway@fcc.gov. 

SUPPLEMENTARY INFORMATION: This is a 

summary of the Commission’s 

Memorandum Opinion and Order on 

Reconsideration in WT Docket No. 10– 

119, FCC 21–90, adopted August 3, 

2021, and released August 4, 2021. The 

full text of the Memorandum Opinion 

and Order on Reconsideration, 

including all Appendices, is available 

for inspection and copying during 

normal business hours in the FCC 

Reference Center, 45 L Street NE, 

Washington, DC 20554, or available for 

viewing via the Commission’s ECFS 

website by entering the docket number, 

WT Docket No. 10–119. Alternative 

formats are available for people with 

disabilities (Braille, large print, 

electronic files, audio format), by 

sending an email to FCC504@fcc.gov or 

calling the Consumer and Governmental 

Affairs Bureau at (202) 418–0530 

(voice), (202) 418–0432 (TTY). 

The Commission will send a copy of 

this Memorandum Opinion and Order 

on Reconsideration in a report to be sent 

to Congress and the Government 

Accountability Office pursuant to the 

Congressional Review Act, see 5 U.S.C. 

801(a)(1)(A). 

Final Regulatory Flexibility Analysis 

The Regulatory Flexibility Act 

requires that an agency prepare a 

regulatory flexibility analysis for notice 

and comment rulemakings, unless the 

agency certifies that ‘‘the rule will not, 

if promulgated, have a significant 

economic impact on a substantial 

number of small entities.’’ In the 2017 

Report and Order in this proceeding, the 

Commission determined that the 

reorganization of Part 95 and 

substantive changes made to rules 

governing certain services would not 

have a significant economic impact on 

a substantial number of small entities 

and included a Final Regulatory 

Flexibility Certification (FRFC) in the 

Report and Order which is subject to 

review in this Memorandum Opinion 

and Order on Reconsideration. No 

comments or petitions for 

reconsideration were received on the 

FRFC. The Commission’s actions in this 

Memorandum Opinion and Order on 

Reconsideration will not have a 

significant economic impact on a 

substantial number of small entities. 

Therefore, the Commission certifies that 

the requirements of this Memorandum 

Opinion and Order on Reconsideration 

will not have a significant economic 

impact on a substantial number of small 

entities. 

Paperwork Reduction Act 

This Memorandum Opinion and 

Order on Reconsideration does not 

contain any new or modified 

information collection requirements 

subject to the Paperwork Reduction Act 

of 1985, Public Law 104–13. In addition, 

therefore, it does not contain any new 

or modified information collection 

burden for small business concerns with 

fewer than 25 employees, pursuant to 

the Small Business Paperwork Relief 

Act of 2002, Public Law 107–198. 

Congressional Review Act 

The Commission will send a copy of 

this Memorandum Opinion and Order 

on Reconsideration, including the 

Supplemental Final Regulatory 

Flexibility Certification, to Congress and 

the Government Accountability Office 

pursuant to the Congressional Review 

Act. See 5 U.S.C. 801(a)(1)(A). In 

addition, the Commission will send a 

copy of this Memorandum Opinion and 

Order on Reconsideration, including the 

Supplemental Final Regulatory 

Flexibility Certification, to the Chief 

Counsel for Advocacy of the Small 

Business Administration. 

Synopsis 

1. Cobra Petition. CB Radio Service is 

a mobile and fixed two-way voice 

communications service for facilitating 

personal, business, or voluntary public 

service activities, including 

communications to provide assistance 

to highway travelers. Cobra’s petition 

requests that the Commission permit 

Frequency Modulation (FM) operation 

as part of an optional dual modulation 

scheme for CB radios (i.e., a CB radio 

could have both Amplitude Modulation 

(AM) and FM capability). Cobra and 

others suggest that an FM option will 

benefit the CB radio user—both 

professional and recreational—in that it 

will provide better quality and clarity of 

communications. 

2. The Commission concludes that 

allowing manufacturers to add FM as an 

optional modulation scheme will not 

substantially change the fundamental 

nature of the CB Radio Service and will 

improve the user experience. 

Continuing to mandate AM capability 

while permitting dual modulation will 

provide benefits to CB radio users who 

will have an additional modulation 

option, while maintaining the basic 

character of the service. The addition of 

FM as a permitted mode will not result 

in additional interference because users 

who hear unintelligible audio on a 

particular channel can simply select 

another channel or switch modes. 

3. The Commission grants the Cobra 

Petition to the extent described in the 

Memorandum Opinion and Order on 

Reconsideration. Specifically, the 

Commission amends Section 95.971(a) 

of the Commission’s rules to permit CB 

Radio Service transmitters to transmit 

FM voice emissions along with AM. The 

Commission notes that AM and FM 

operations are permitted in other Part 95 

services under similar technical 

parameters, so the Commission 

generally applies the technical rules to 

FM signals as currently apply to AM 

signals for the CB Radio Service. In the 

case of peak frequency deviation, 

however, the Commission adopts a limit 

of ±2 kHz due to the 10 kHz channel 

spacing and 8 kHz occupied bandwidth 

maximum in the CB Radio Service. 

Although this specific limit differs from 

those established in other Part 95 

services (e.g., ±5 kHz for 20 kHz channel 

bandwidth and ±2.5 kHz for 12.5 kHz 

channel bandwidth in both General 

Mobile Radio Service (GMRS) and 

Multi-Use Radio Service (MURS)), it is 

consistent across Part 95 services 

53564 Federal Register / Vol. 86, No. 185 / Tuesday, September 28, 2021 / Rules and Regulations 

considering the respective occupied 

bandwidths. The Commission also finds 

it appropriate to use the common FM 

emission designator used for Part 95 

GMRS and MURS for FM CB Radio 

Service. These technical rules are 

implemented through the amendment of 

Sections 95.967, 95.971, 95.973, 95.975, 

and 95.979 of the Commission’s rules to 

reflect the addition of FM as an optional 

additional mode of transmission. The 

Commission notes that parties planning 

to incorporate the FM mode into CB 

radios will have to obtain a valid grant 

of certification under the Commission’s 

equipment authorization rules. 

4. Motorola Petition. GMRS is a 

mobile two-way voice communications 

service, with limited data applications, 

for facilitating activities of individual 

licensees and their family members, 

including communications during 

emergencies and natural disasters. 

Similarly, Family Radio Service (FRS) is 

a very short-distance, two-way voice 

communications service, with limited 

data applications, between low-power 

hand-held radios, for facilitating 

individual, family, group, recreational, 

and business activities. GMRS and FRS 

co-exist on the same frequencies, except 

for the GMRS 467 MHz main channels. 

In its petition, Motorola seeks 

reconsideration of the Commission’s 

decision in the 2017 Report and Order 

not to permit automatic or periodic 

location and data transmissions. It seeks 

harmonized rule amendments for both 

the GMRS and FRS, since the two 

services coexist on the same 

frequencies. Motorola argues that 

automatic transmissions should be 

allowed because almost all of the 

reasons that support permitting manual 

data transmissions apply equally to 

transmissions initiated automatically, 

except for how frequently a user could 

transmit the data information. Members 

of the GMRS community support 

Motorola’s suggestion to permit 

automatic or periodic location and data 

transmissions. Motorola contends that 

allowing automatic data transmissions 

is in the public interest and will 

enhance public safety. Motorola 

explains that automatic location 

transmissions will provide tracking 

capabilities for individuals in remote 

areas where these expanded capabilities 

will aid search and rescue missions. 

5. The Commission concludes that the 

public interest will be furthered by 

allowing automatic or periodic location 

and data transmission on all GMRS 

channels. Automatic or periodic 

location and data transmissions will be 

subject to the same technical limitations 

as manual data transmissions. 

Automatic or periodic transmissions 

will be limited to no more than once 

every 30 seconds and no more than one 

second in duration. Consistent with the 

Commission’s approach to treating 

GMRS and FRS similarly with regard to 

digital data transmissions, the 

Commission amends its rules to permit 

automatic or periodic location and data 

transmissions for both GMRS and FRS. 

Indeed, because FRS operates on 

channels shared with GMRS, automatic 

or periodic location and data 

transmissions would be permitted on 

those channels even if we did not 

amend the FRS rules. 

6. The Commission finds that the 

public interest will be furthered by 

granting the Motorola Petition to the 

extent described in the Memorandum 

Opinion and Order on Reconsideration. 

Specifically, the Commission amends 

Sections 95.531, 95.587, and 95.1787 of 

its rules to permit FRS and GMRS units 

to transmit location and data 

information automatically or 

periodically, subject to the same 

restrictions as are currently in place for 

manual data transmissions. The 

Commission also corrects a 

typographical error in the GMRS 

frequency listings in Section 95.1763(d) 

as adopted in the 2017 Report and Order 

by correcting the erroneous entry for 

467.5675 MHz to refer to 467.5625 MHz. 

7. Medtronic Petition. Medtronic 

points out in its petition that several 

rule revisions in the 2017 Report and 

Order meant to be ‘‘ministerial’’ 

inadvertently may have modified the 

existing MedRadio Service rules. 

Medtronic requests that the Commission 

revise certain rules to fix the inadvertent 

substantive changes and correct 

typographical errors. 

8. The Commission grants the 

Medtronic Petition and amends the 

rules as requested, with a few 

modifications, to undo inadvertent 

changes to the MedRadio Service rules. 

First, Medtronic points out that the new 

version of Section 95.303 defines the 

‘‘authorized bandwidth’’ for Part 95 

services in terms of ‘‘occupied 

bandwidth,’’ but the flexible rules 

applicable to the MedRadio Service do 

not require the measurement of 

occupied bandwidth. The Commission 

resolves this inconsistency by amending 

the MedRadio rules to remove the 

incompatible ‘‘authorized bandwidth’’ 

concept. Specifically, the Commission 

amends Section 95.2573 to clarify that 

the emission bandwidth definition in 

Section 95.2503 should be used for the 

MedRadio Service and make other 

conforming edits to indicate the 

channelization flexibility up to the 

bandwidth limits outlined in Section 

95.2573. Further, the Commission 

amends Section 95.2579 to remove the 

use of the term ‘‘occupied bandwidth,’’ 

which has a specific definition in 

Section 95.303, and instead refer to the 

‘‘MedRadio channel the transmission is 

intended to occupy’’ in order to make 

the language consistent with similar 

language in other MedRadio Service 

rules. These changes will remove the 

use of similar yet incompatible terms 

from the MedRadio rules. The 

Commission accepts Medtronic’s 

suggested changes to Sections 

95.2557(b), (c) and 95.2559(a)(6) 

because it agrees they return the rules 

back to their original intent. Further, the 

Commission corrects certain 

typographical errors, as suggested by 

Medtronic and on its own motion, in 

Sections 95.2503, 95.2509(e)(2), 

95.2533(e)(2), and 95.2559(f) of the 

MedRadio Service rules. 

9. Finally, the Commission clarifies 

the language in Section 95.2569(c) to 

remove incorrect terminology regarding 

‘‘SAR Measurement techniques’’ and 

return the rule to be closer to its 

previous language. Section 95.2569(c) is 

designed to address the measurement of 

field strength and radiated power of 

devices that are implanted within a 

body. SAR measurements, by contrast, 

are used in connection with the 

evaluation of radiofrequency exposure 

and are already addressed in Section 

95.2585. Because the original language 

and measurement guidance accurately 

described in-body simulations, the 

Commission corrects Section 95.2569(c) 

to refer to the ‘‘dielectric parameters for 

the tissue-equivalent material’’ with 

regard to measuring energy emitted from 

implanted devices. 

List of Subjects in 47 CFR Part 95 

Communications, Radio equipment. 

Federal Communications Commission. 

Marlene Dortch, 

Secretary. 

Final Rules 

The Federal Communications 

Commission amends part 95 of Title 47 

of the Code of Federal Regulations (CFR) 

as set forth below: 

PART 95—PERSONAL RADIO 

SERVICES 

■ 1. The authority citation for part 95 

continues to read as follows: 

Authority: 47 U.S.C. 154, 303, 307. 

■ 2. Section 95.531 is amended by 

revising paragraph (a) to read as follows: 

§ 95.531 Permissible FRS uses. 

* * * * * 

Federal Register / Vol. 86, No. 185 / Tuesday, September 28, 2021 / Rules and Regulations 53565 

(a) Digital data. In addition to voice 

conversations, FRS units may transmit 

digital data containing location 

information, or requesting location 

information from one or more other FRS 

or GMRS units, or containing a brief text 

message to another specific GMRS or 

FRS unit. Digital data transmissions 

may be initiated by a manual action of 

the operator or on an automatic or 

periodic basis, and a FRS unit receiving 

an interrogation request may 

automatically respond with its location. 

See also § 95.587(c). 

* * * * * 

■ 3. Section 95.587 is amended by 

revising paragraph (c)(2) to read as 

follows: 

§ 95.587 FRS additional requirements. 

* * * * * 

(c) * * * 

(2) Digital data transmissions may be 

initiated by a manual action or 

command of the operator or on an 

automatic or periodic basis, and FRS 

units may be designed to automatically 

respond with location data upon 

receiving an interrogation request from 

another FRS unit or a GMRS unit. 

* * * * *. 

■ 4. Section 95.967 is amended by 

revising paragraph (a) to read as follows: 

§ 95.967 CBRS transmitter power limits. 

* * * * * 

(a) When transmitting amplitude 

modulated (AM) voice signals or 

frequency modulated (FM) voice 

signals, the mean carrier power must 

not exceed 4 Watts. 

* * * * * 

■ 5. Section 95.971 is amended by 

revising paragraph (a) to read as follows: 

§ 95.971 CBRS emission types. 

* * * * * 

(a) Permitted emission types. CBRS 

transmitter types must transmit AM 

voice emission type A3E or SSB voice 

emission types J3E, R3E or H3E, and 

may also transmit FM voice emission 

type F3E. 

* * * * * 

■ 6. Section 95.973 is amended by 

revising paragraph (a) to read as follows: 

§ 95.973 CBRS authorized bandwidth. 

* * * * * 

(a) AM and FM. The authorized 

bandwidth for emission types A3E and 

F3E is 8 kHz. 

* * * * * 

■ 7. Section 95.975 is amended by 

adding paragraph (c) to read as follows: 

§ 95.975 CBRS modulation limits. 

* * * * * 

(c) When emission type F3E is 

transmitted the peak frequency 

deviation shall not exceed ±2 kHz. 

■ 8. Section 95.979(a) is amended by 

revising the first row of the table to read 

as follows: 

§ 95.979 CBRS unwanted emissions limits. 

* * * * * 

(a) * * * 

Emission type Paragraph 

A3E, F3E .................... (1), (3), (5), (6). 

* * * * * 

* * * * * 

■ 9. Section 95.1763 is amended by 

revising paragraph (d) to read as 

follows: 

§ 95.1763 GMRS channels. 

* * * * * 

(d) 467 MHz interstitial channels. 

Only hand-held portable units may 

transmit on these 7 channels. The 

channel center frequencies are: 

467.5625, 467.5875, 467.6125, 467.6375, 

467.6625, 467.6875, and 467.7125 MHz. 

■ 10. Section 95.1787 is amended by 

revising paragraph (a)(1) to read as 

follows: 

§ 95.1787 GMRS additional requirements. 

* * * * * 

(a) * * * 

(1) Digital data transmissions may 

contain location information, or 

requesting location information from 

one or more other GMRS or FRS units, 

or containing a brief text message to 

another specific GMRS or FRS unit. 

Digital data transmissions may be 

initiated by a manual action of the 

operator or on an automatic or periodic 

basis, and a GMRS unit receiving an 

interrogation request may automatically 

respond with its location. 

* * * * * 

■ 11. Section 95.2503 is amended by 

revising the definition of ‘‘Medical 

implant transmitter’’ to read as follows: 

§ 95.2503 Definitions, MedRadio. 

* * * * * 

Medical implant transmitter. A 

MedRadio transmitter in which both the 

antenna and transmitter device are 

designed to operate within a human 

body for the purpose of facilitating 

communications from a medical 

implant device. 

* * * * * 

■ 12. Section 95.2509 is amended by 

revising the paragraph (e)(2) to read as 

follows: 

§ 95.2509 MBAN registration and 

frequency coordination. 

* * * * * 

(e) * * * 

(2) If the MBAN is within line-of-sight 

of an AMT receive facility, the MBAN 

frequency coordinator shall achieve a 

mutually satisfactory coordination 

agreement with the AMT frequency 

coordinator prior to the MBAN 

beginning operations in the band. Such 

coordination agreement shall provide 

protection to AMT receive stations 

consistent with International 

Telecommunication Union (ITU) 

Recommendation ITU–R M.1459, 

‘‘Protection criteria for telemetry 

systems in the aeronautical mobile 

service and mitigation techniques to 

facilitate sharing with geostationary 

broadcasting-satellite and mobilesatellite services in the frequency bands 

1 452–1 525 and 2 310–2 360 MHz,’’ 

May 2000, as adjusted using generally 

accepted engineering practices and 

standards that are mutually agreeable to 

both coordinators to take into account 

the local conditions and operating 

characteristics of the applicable AMT 

and MBAN facilities, and shall specify 

when the device shall limit its 

transmissions to segments of the 2360– 

2390 MHz band or must cease operation 

in the band. This ITU document is 

incorporated by reference into this 

section with the approval of the Director 

of the Federal Register under 5 U.S.C. 

552(a) and 1 CFR part 51. To enforce 

any edition other than that specified in 

this section, the Federal 

Communications Commission must 

publish a document in the Federal 

Register and the material must be 

available to the public. Copies of the 

recommendation may be obtained from 

ITU, Place des Nations, 1211 Geneva 20, 

Switzerland, or online at http://

www.itu.int/en/publications/Pages/ 

default.aspx. You may inspect a copy at 

the Federal Communications 

Commission, 445 12th Street SW, 

Washington, DC 20554, or at the 

National Archives and Records 

Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, 

or go to: http://www.archives.gov/ 

federal_register/code_of_federal_

regulations/ibr_locations.html. 

‘‘Generally accepted engineering 

practices and standards’’ include, but 

are not limited to, engineering analyses 

and measurement data as well as 

limiting MBAN operations in the band 

by time or frequency. 

* * * * * 

53566 Federal Register / Vol. 86, No. 185 / Tuesday, September 28, 2021 / Rules and Regulations 

■ 13. Section 95.2533 is amended by 

revising paragraph (e)(2) to read as 

follows: 

§ 95.2533 Prohibited MedRadio uses. 

* * * * * 

(e) * * * 

(2) A non-radio frequency actuation 

signal generated by a device external to 

the body with respect to which the 

MedRadio implant or body-worn 

transmitter is used. 

■ 14. Section 95.2557 is amended by 

revising paragraphs (b) and (c) to read 

as follows: 

§ 95.2557 MedRadio duration of 

transmissions. 

* * * * * 

(b) MedRadio transmitters may 

transmit in the 401–406 MHz band in 

accordance with the provisions of 

§ 95.2559(b)(2) and § 95.2559(b)(3) for 

no more than 3.6 seconds in total within 

a one hour time period. 

(c) MedRadio transmitters may 

transmit in the 401–406 MHz band in 

accordance with the provisions of 

§ 95.2559(b)(4) for no more than 360 

milliseconds in total within a one hour 

time period. 

* * * * * 

■ 15. Section 95.2559 is amended by 

revising paragraphs (a)(6) introductory 

text, (a)(6)(iii) and the paragraph 

heading to paragraph (f) to read as 

follows: 

§ 95.2559 MedRadio channel access 

requirements. 

* * * * * 

(a) * * * 

(6) When a channel is selected prior 

to a MedRadio communications session, 

it is permissible to select an alternate 

channel for use if communications are 

interrupted, provided that the alternate 

channel selected is the next best choice 

using the criteria specified in 

paragraphs (a)(1) through (5) of this 

section. The alternate channel may be 

accessed in the event a communications 

session is interrupted by interference. 

The following criteria must be met: 

* * * * * 

(iii) In the event that this alternate 

channel provision is not used by the 

MedRadio system, or if the criteria in 

paragraphs (i) and (ii) of this section are 

not met, a channel must be selected 

using the access criteria specified in 

paragraphs (a)(1) through (5) of this 

section. 

* * * * * 

(f) Requirements for MBANs. * * * 

■ 16. Section 95.2569 is amended by 

revising paragraph (c) to read as follows: 

§ 95.2569 MedRadio field strength 

measurements. 

* * * * * 

(c) For a MedRadio transmitter 

intended to be implanted in a human 

body, radiated emissions and M–EIRP 

measurements for transmissions by 

stations authorized under this section 

may be made in accordance with an 

FCC-approved human body simulator 

and test technique. Guidance regarding 

dielectric parameters for the tissueequivalent material can be found in the 

Office of Engineering and Technology 

(OET) Laboratory Division Knowledge 

Database (KDB). 

■ 17. Section 95.2573 is revised to read 

as follows: 

§ 95.2573 MedRadio authorized 

bandwidths. 

Each MedRadio transmitter type must 

be designed such that the MedRadio 

emission bandwidth (as defined in 

§ 95.2503) does not exceed the 

applicable limits set forth in this 

section. 

(a) For MedRadio transmitters 

operating in the 402–405 MHz band, the 

maximum MedRadio emission 

bandwidth is 300 kHz. Such 

transmitters must not use more than 300 

kHz of bandwidth (total) during a 

MedRadio communications session. 

This provision does not preclude full 

duplex or half duplex communications 

provided that the total bandwidth of all 

of the channels employed in a 

MedRadio communications session does 

not exceed 300 kHz. 

(b) For MedRadio transmitters 

operating in the 401–401.85 MHz band 

or the 405–406 MHz band, the 

maximum MedRadio emission 

bandwidth is 100 kHz. Such 

transmitters must not use more than 100 

kHz of bandwidth (total) during a 

MedRadio communications session. 

This provision does not preclude full 

duplex or half duplex communications 

provided that the total bandwidth of all 

of the channels employed in a 

MedRadio communications session does 

not exceed 100 kHz. 

(c) For MedRadio transmitters 

operating in the 401.85–402 MHz band, 

the maximum MedRadio emission 

bandwidth is 150 kHz. Such 

transmitters must not use more than 150 

kHz of bandwidth (total) during a 

MedRadio communications session. 

This provision does not preclude full 

duplex or half duplex communications, 

provided that the total bandwidth of all 

of the channels employed in a 

MedRadio communications session does 

not exceed 150 kHz. 

(d) For MedRadio transmitters 

operating in the 413–419 MHz, 426–432 

MHz, 438–444 MHz or 451–457 MHz 

bands, the maximum MedRadio 

emission bandwidth is 6 MHz. 

(e) For MedRadio transmitters 

operating in the 2360–2400 MHz band, 

the maximum MedRadio emission 

bandwidth is 5 MHz. 

(f) Lesser emission bandwidths may 

be employed, provided that the 

unwanted emissions are attenuated as 

provided in § 95.2579. See also 

§ 95.2567 regarding maximum radiated 

power limits, § 95.2565 on frequency 

accuracy, § 95.2569 on field strength 

measurements, and § 95.2585 on RF 

exposure. 

■ 18. Section 95.2579 is amended by 

revising paragraphs (c)(1), (d) 

introductory text, (d)(1)(i) and (ii), and 

(g) to read as follows: 

§ 95.2579 MedRadio unwanted emissions 

limits. 

* * * * * 

(c) * * * 

(1) 20 dB, on any frequency within 

the 402–405 MHz band that is more 

than 150 kHz away from the center 

frequency of the MedRadio channel the 

transmission is intended to occupy; 

* * * * * 

(d) Attenuation requirements, 401– 

402 MHz, 405–406 MHz. For MedRadio 

transmitter types designed to operate in 

the 401–402 MHz band or 405–406 MHz 

band, the power of unwanted emissions 

must be attenuated below the maximum 

permitted transmitter output power by 

at least: 

(1) * * * 

(i) More than 75 kHz away from the 

center frequency of the MedRadio 

channel the transmission is intended to 

occupy if the MedRadio transmitter type 

is operating on a frequency between 

401.85 and 402 MHz; or, 

(ii) More than 50 kHz away from the 

center frequency of the MedRadio 

channel the transmission is intended to 

occupy and 100 kHz or less below 401 

MHz or above 406 MHz. 

* * * * * 

(g) Measurements. Compliance with 

the limits in paragraphs (c), (d) and (e) 

of this section is based on the use of 

measurement instrumentation using a 

peak detector function with an 

instrument resolution bandwidth 

approximately equal to 1.0 percent of 

the emission bandwidth of the device 

under measurement. 

[FR Doc. 2021–19399 Filed 9–27–21; 8:45 am] 

BILLING CODE 6712–01–P