Review of the Commission's Personal Radio Services Rules

Published date28 September 2021
Citation86 FR 53563
Record Number2021-19399
SectionRules and Regulations
CourtFederal Communications Commission
Federal Register, Volume 86 Issue 185 (Tuesday, September 28, 2021)
[Federal Register Volume 86, Number 185 (Tuesday, September 28, 2021)]
                [Rules and Regulations]
                [Pages 53563-53566]
                From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
                [FR Doc No: 2021-19399]
                [[Page 53563]]
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                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
                [email protected], or Melissa Conway of the Wireless
                Telecommunications Bureau, Mobility Division, at (202) 418-2887 or
                [email protected].
                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 [email protected] 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
                [[Page 53564]]
                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
                0
                1. The authority citation for part 95 continues to read as follows:
                 Authority: 47 U.S.C. 154, 303, 307.
                0
                2. Section 95.531 is amended by revising paragraph (a) to read as
                follows:
                Sec. 95.531 Permissible FRS uses.
                * * * * *
                [[Page 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 Sec. 95.587(c).
                * * * * *
                0
                3. Section 95.587 is amended by revising paragraph (c)(2) to read as
                follows:
                Sec. 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.
                * * * * *
                0
                4. Section 95.967 is amended by revising paragraph (a) to read as
                follows:
                Sec. 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.
                * * * * *
                0
                5. Section 95.971 is amended by revising paragraph (a) to read as
                follows:
                Sec. 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.
                * * * * *
                0
                6. Section 95.973 is amended by revising paragraph (a) to read as
                follows:
                Sec. 95.973 CBRS authorized bandwidth.
                * * * * *
                 (a) AM and FM. The authorized bandwidth for emission types A3E and
                F3E is 8 kHz.
                * * * * *
                0
                7. Section 95.975 is amended by adding paragraph (c) to read as
                follows:
                Sec. 95.975 CBRS modulation limits.
                * * * * *
                 (c) When emission type F3E is transmitted the peak frequency
                deviation shall not exceed 2 kHz.
                0
                8. Section 95.979(a) is amended by revising the first row of the table
                to read as follows:
                Sec. 95.979 CBRS unwanted emissions limits.
                * * * * *
                 (a) * * *
                ------------------------------------------------------------------------
                 Emission type Paragraph
                ------------------------------------------------------------------------
                A3E, F3E............................. (1), (3), (5), (6).
                
                 * * * * *
                ------------------------------------------------------------------------
                * * * * *
                0
                9. Section 95.1763 is amended by revising paragraph (d) to read as
                follows:
                Sec. 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.
                0
                10. Section 95.1787 is amended by revising paragraph (a)(1) to read as
                follows:
                Sec. 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.
                * * * * *
                0
                11. Section 95.2503 is amended by revising the definition of ``Medical
                implant transmitter'' to read as follows:
                Sec. 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.
                * * * * *
                0
                12. Section 95.2509 is amended by revising the paragraph (e)(2) to read
                as follows:
                Sec. 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 mobile-satellite 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.
                * * * * *
                [[Page 53566]]
                0
                13. Section 95.2533 is amended by revising paragraph (e)(2) to read as
                follows:
                Sec. 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.
                0
                14. Section 95.2557 is amended by revising paragraphs (b) and (c) to
                read as follows:
                Sec. 95.2557 MedRadio duration of transmissions.
                * * * * *
                 (b) MedRadio transmitters may transmit in the 401-406 MHz band in
                accordance with the provisions of Sec. 95.2559(b)(2) and Sec.
                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 Sec. 95.2559(b)(4) for no more than
                360 milliseconds in total within a one hour time period.
                * * * * *
                0
                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:
                Sec. 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. * * *
                0
                16. Section 95.2569 is amended by revising paragraph (c) to read as
                follows:
                Sec. 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 tissue-equivalent material can
                be found in the Office of Engineering and Technology (OET) Laboratory
                Division Knowledge Database (KDB).
                0
                17. Section 95.2573 is revised to read as follows:
                Sec. 95.2573 MedRadio authorized bandwidths.
                 Each MedRadio transmitter type must be designed such that the
                MedRadio emission bandwidth (as defined in Sec. 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 Sec. 95.2579. See
                also Sec. 95.2567 regarding maximum radiated power limits, Sec.
                95.2565 on frequency accuracy, Sec. 95.2569 on field strength
                measurements, and Sec. 95.2585 on RF exposure.
                0
                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:
                Sec. 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
                

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