47 C.F.R. Subpart E—Technical Regulations
Title 47 - Telecommunication
Source: 53 FR 36789, Sept. 22, 1988, unless otherwise noted.
This section provides the technical standards to which each transmitter (apparatus that converts electrical energy received from a source into RF (radio frequency) energy capable of being radiated) used or intended to be used in a station authorized in any of the Personal Radio Services must comply. This section also provides requirements for obtaining certification for such transmitters. The Personal Radio Services are the GMRS (General Mobile Radio Service)—subpart A, the Family Radio Service (FRS)—subpart B, the R/C (Radio Control Radio Service)—subpart C, the CB (Citizens Band Radio Service)—subpart D, the Low Power Radio Service (LPRS)—subpart G, the Wireless Medical Telemetry Service (WMTS)—subpart H, the Medical Implants Communication Service (MICS)—subpart I, the Multi-Use Radio Service (MURS)—subpart J, and Dedicated Short-Range Communications Service On-Board Units (DSRCS-OBUs)—subpart L. [69 FR 46445, Aug. 3, 2004] (a) Each GMRS transmitter (a transmitter that operates or is intended to operate at a station authorized in the GMRS) must be certificated. (b) Each R/C transmitter (a transmitter that operates or is intended to operate at a station authorized in the R/C) must be certificated, except one that transmits only in the 26–27 MHz frequency band and is crystal controlled (where the transmitted frequency is established by a crystal (a quartz piezo-electric element)). (c) Each CB transmitter (a transmitter that operates or is intended to operate at a station authorized in the CB) must be certificated. No CB transmitter certificated pursuant to an application filed prior to September 10, 1976, shall be manufactured or marketed. (d) Each FRS unit (a transmitter that operates or is intended to operate in the FRS) must be certified for use in the FRS in accordance with Subpart J of Part 2 of this chapter. (e) Each Low Power Radio Service transmitter (a transmitter that operates or is intended to operate in the LPRS) must be certificated. (f) Each Medical Implant Communications Service transmitter (a transmitter that operates or is intended to operate in the MICS) must be certificated except for medical implant transmitters that are not marketed for use in the United States, but which otherwise comply with the MICS technical requirements and are operated in the United States by individuals who have traveled to the United States from abroad. Medical implant transmitters (as defined in appendix 1 to subpart E of part 95 of this chapter) are subject to the radiofrequency radiation exposure requirements specified in §§1.1307 and 2.1093 of this chapter, as appropriate. Applications for equipment authorization of devices operating under this section must contain a finite difference time domain (FDTD) computational modeling report showing compliance with these provisions for fundamental emissions. The Commission retains the discretion to request the submission of specific absorption rate measurement data. (g) Each Multi-Use Radio Service transmitter (a transmitter that operates or is intended to operate in the MURS) must be certificated in accordance with Subpart J of Part 2 of this chapter, Provided however, that those radio units certificated as of November 12, 2002 need not be recertificated. (h) Each Dedicated Short-Range Communications Service On-Board Unit (DSRCS-OBU) that operates or is intended to operate in the DSRCS (5.850–5.925 GHz) must be certified in accordance with subpart L of this part and subpart J of part 2 of this chapter. [53 FR 36789, Sept. 22, 1988, as amended at 61 FR 28769, June 6, 1996; 61 FR 46567, Sept. 4, 1996; 63 FR 36610, July 7, 1998; 64 FR 69929, Dec. 15, 1999; 65 FR 60877, Oct. 13, 2000; 67 FR 63289, Oct. 11, 2002; 69 FR 46446, Aug. 3, 2004] Any entity may request certification for its transmitter when the transmitter is used in the GMRS, FRS, R/C, CB, IVDS, LPRS, MURS, or MICS following the procedures in part 2 of this chapter. Medical implant transmitters shall be tested for emissions and EIRP limit compliance while enclosed in a medium that simulates human body tissue in accordance with the procedures in §95.639(g). Frequency stability testing for MICS transmitters shall be performed over the temperature range set forth in §95.628. Dedicated Short-Range Communications Service On-Board Units (DSRCS-OBUs) must be certified in accordance with subpart L of this part and subpart J of part 2 of this chapter. [69 FR 46446, Aug. 3, 2004] Only the holder of the grant of authorization of the particular certificated CB transmitter may make the modifications permitted under the provisions for certification (see part 2 of this chapter.) No grantee shall make any of the following modifications to the transmitter without prior written permission from the FCC (Federal Communications Commission): (a) The addition of any accessory or device not specified in the application for certification and authorized by the FCC in granting the certification; (b) The addition of any switch, control or external connection; (c) Any modification to provide for additional transmitting frequencies, increased modulation level, a different form of modulation, or increased TP (RF transmitter power expressed in W (watts), either mean power (TP averaged over at least 30 cycles of the lowest modulating frequency, typically 0.1 seconds at maximum power) or peak envelope power (TP averaged during 1 RF cycle at the highest crest of the modulation envelope), as measured at the transmitter output antenna terminals.) [53 FR 36789, Sept. 22, 1988, as amended at 63 FR 36610, July 7, 1998]
Title 47: Telecommunication
PART 95—PERSONAL RADIO SERVICES
Subpart E—Technical Regulations
General Provisions
§ 95.601 Basis and purpose.
§ 95.603 Certification required.
§ 95.605 Certification procedures.
§ 95.607 CB transmitter modification.
Technical Standards
§ 95.621 GMRS transmitter channel frequencies.
(a) The GMRS transmitter channel frequencies (reference frequencies from which the carrier frequency, suppressed or otherwise, may not deviate by more than the specified frequency tolerance) are 462.5500, 462.5625, 462.5750, 462.5875, 462.6000, 462.6125, 462.6250, 462.6375, 462.6500, 462.6625, 462.6750, 462.6875, 462.7000, 462.7125, 462.7250, 467.5500, 467.5750, 467.6000, 467.6250, 467.6500, 467.6750, 467.7000, and 467.7250.
Note: Certain GMRS transmitter channel frequencies are authorized only for certain station classes and station locations. See part 95, subpart A.
(b) Each GMRS transmitter for mobile station, small base station and control station operation must be maintained within a frequency tolerance of 0.0005%. Each GMRS transmitter for base station (except small base), mobile relay station or fixed station operation must be maintained within a frequency tolerance of 0.00025%.
[53 FR 47718, Nov. 25, 1988]
§ 95.623 R/C transmitter channel frequencies.
(a) The R/C transmitter channel frequencies are:
MHz
27.045
27.095
27.145
27.195
27.255
72.01
72.03
72.05
72.07
72.09
72.11
72.13
72.15
72.17
72.19
72.21
72.23
72.25
72.27
72.29
72.31
72.33
72.35
72.37
72.39
72.41
72.43
72.45
72.47
72.49
72.51
72.53
72.55
72.57
72.59
72.61
72.63
72.65
72.67
72.69
72.71
72.73
72.75
72.77
72.79
72.81
72.83
72.85
72.87
72.89
72.91
72.93
72.95
72.97
72.99
75.41
75.43
75.45
75.47
75.49
75.51
75.53
75.55
75.57
75.59
75.61
75.63
75.65
75.67
75.69
75.71
75.73
75.75
75.77
75.79
75.81
75.83
75.85
75.87
75.89
75.91
75.93
75.95
75.97
75.99
Note: Certain R/C transmitter channel frequencies are authorized to operate only certain kinds of devices (see part 95, subpart C.)
(b) Each R/C transmitter that transmits in the 26–27 MHz frequency band with a mean TP of 2.5 W or less and that is used solely by the operator to turn on and/or off a device at a remote location, other than a device used solely to attract attention, must be maintained within a fequency tolerance of 0.01%. All other R/C transmitters that transmit in the 26–27 MHz frequency band must be maintained within a frequency tolerance of 0.005%. Except as noted in paragraph (c) of this section, R/C transmitters capable of operation in the 72–76 MHz band must be maintained within a frequency tolerance of 0.005%.
(c) All R/C transmitters capable of operation in the 72–76 MHz band that are manufactured in or imported into the United States, on or after March 1, 1992, or are marketed on or after March 1, 1993, must be maintained within a frequency tolerance of 0.002%. R/C transmitters operating in the 72–76 MHz band and marketed before March 1, 1993, may continue to be operated with a frequency tolerance of 0.005% until March 1, 1998.
[53 FR 36789, Sept. 22, 1988; 53 FR 52713, Dec. 29, 1988; 56 FR 15837, Apr. 18, 1991]
§ 95.625 CB transmitter channel frequencies.
(a) The CB transmitter channel frequencies are:
------------------------------------------------------------------------ Channel No. (MHz)------------------------------------------------------------------------1.............................................................. 26.9652.............................................................. 26.9753.............................................................. 26.9854.............................................................. 27.0055.............................................................. 27.0156.............................................................. 27.0257.............................................................. 27.0358.............................................................. 27.0559.............................................................. 27.06510............................................................. 27.07511............................................................. 27.08512............................................................. 27.10513............................................................. 27.11514............................................................. 27.12515............................................................. 27.13516............................................................. 27.15517............................................................. 27.16518............................................................. 27.17519............................................................. 27.18520............................................................. 27.20521............................................................. 27.21522............................................................. 27.22523............................................................. 27.25524............................................................. 27.23525............................................................. 27.24526............................................................. 27.26527............................................................. 27.27528............................................................. 27.28529............................................................. 27.29530............................................................. 27.30531............................................................. 27.31532............................................................. 27.32533............................................................. 27.33534............................................................. 27.34535............................................................. 27.35536............................................................. 27.36537............................................................. 27.37538............................................................. 27.38539............................................................. 27.39540............................................................. 27.405------------------------------------------------------------------------
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(b) Each CB transmitter must be maintained within a frequency tolerance of 0.005%. § 95.627 FRS unit channel frequencies.(a) The FRS unit channel frequencies are: |
------------------------------------------------------------------------ Channel No. (MHz)------------------------------------------------------------------------1....................................................... 462.56252....................................................... 462.58753....................................................... 462.61254....................................................... 462.63755....................................................... 462.66256....................................................... 462.68757....................................................... 462.71258....................................................... 467.56259....................................................... 467.587510...................................................... 467.612511...................................................... 467.637512...................................................... 467.662513...................................................... 467.687514...................................................... 467.7125------------------------------------------------------------------------
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(b) Each FRS unit must be maintained within a frequency tolerance of 0.00025%. [61 FR 28769, June 6, 1996] § 95.628 MICS transmitter.(a) Frequency monitoring. Medical implant programmer/control transmitters must incorporate a mechanism for monitoring the channel or channels that the MICS system devices intend to occupy. The monitoring system antenna shall be the antenna normally used by the programmer/control transmitter for a communications session. Before a medical implant programmer/control transmitter initiates a MICS communications session, the following access criteria must be met: (1) The monitoring system bandwidth measured at its 20 dB down points must be equal to or greater than the emission bandwidth of the intended transmission. (2) Within 5 seconds prior to initiating a communications session, circuitry associated with a medical implant programmer/control transmitter must monitor the channel or channels the MICS system devices intend to occupy for a minimum of 10 milliseconds per channel. (3) Based on use of an isotropic monitoring system antenna, the monitoring threshold power level must not be more than 10logB(Hz) − 150 (dBm/Hz) + G(dBi) where B is the emission bandwidth of the MICS communication session transmitter having the widest emission and G is the medical implant programmer/control transmitter monitoring system antenna gain relative to an isotropic antenna. For purposes of showing compliance with the above provision, the above calculated threshold power level must be increased or decreased by an amount equal to the monitoring system antenna gain above or below the gain of an isotropic antenna, respectively. (4) If no signal in a MICS channel above the monitoring threshold power level is detected, the medical implant programmer/control transmitter may initiate a MICS communications session involving transmissions to and from a medical implant device on that channel. The MICS communications session may continue as long as any silent period between consecutive data transmission bursts does not exceed 5 seconds. If a channel meeting the criteria in paragraph (a)(3) of this section is unavailable, the channel with the lowest ambient power level may be accessed. (5) When a channel is selected prior to a MICS communications session, it is permissible to select an alternate channel for use if communications is interrupted, provided that the alternate channel selected is the next best choice using the above criteria. The alternate channel may be accessed in the event a communications session is interrupted by interference. The following criteria must be met: (i) Before transmitting on the alternate channel, the channel must be monitored for a period of at least 10 milliseconds. (ii) The detected power level during this 10 millisecond or greater monitoring period must be no higher than 6 dB above the power level detected when the channel was chosen as the alternate channel. (iii) In the event that this alternate channel provision is not used by the MICS system or if the criteria in (i) and (ii) are not met, a channel must be selected using the access criteria specified in paragraphs (a)(1) through (a)(4) of this section. (6) As used in this section, the following definitions apply: (i) Emission bandwidth—Measured as the width of the signal between the points on either side of carrier center frequency that are 20 dB down relative to the maximum level of the modulated carrier. Compliance will be determined using instrumentation employing a peak detector function and a resolution bandwidth approximately equal to 1% of the emission bandwidth of the device under test. (ii) MICS channel—Any continuous segment of spectrum that is equal to the emission bandwidth of the device with the largest bandwidth that is to participate in a MICS communications session. (Note: The rules do not specify a channeling scheme for use by MICS systems.) (iii) MICS communications session—A collection of transmissions, that may or may not be continuous, between MICS system devices. (b) MICS communications sessions initiated by a medical implant event are not required to use the access criteria set forth in paragraph (a) of this section. (c) Stations may operate on any of the frequencies in the band 402–405 MHz, provided that the out-of-band emissions are attenuated in accordance with §95.635. (d) The authorized bandwidth of the emission from a MICS station shall not exceed 300 kHz, and no communications session involving MICS stations shall use more than a total of 300 kHz of bandwidth during such a session. Note: This provision does not preclude full duplex or half duplex communications provided that the total amount of bandwidth utilized by all of the MICS channels employed in such a MICS communications session does not exceed 300 kHz. (e) Each transmitter in the MICS service must maintain a frequency stability of ±100 ppm of the operating frequency over the range: (1) 25°C to 45°C in the case of medical implant transmitters; and (2) 0°C to 55°C in the case of medical implant programmer/control transmitters. (f) The provisions of this section shall not be used to extend the range of spectrum occupied over space or time for the purpose denying fair access to spectrum for other MICS systems. [64 FR 69930, Dec. 15, 1999] § 95.629 LPRS transmitter frequencies.(a) LPRS transmitters may operate on any frequency listed in paragraphs (b), (c), and (d) of this section. Channels 19, 20, 50, and 151–160 are available exclusively for law enforcement tracking purposes. AMTS transmissions are limited to the 216.750–217.000 MHz band for low power point-to-point network control communications by AMTS coast stations. Other AMTS transmissions in the 216–217 MHz band are prohibited. (b) Standard band channels. (1) The following table indicates standard band frequencies. The channel bandwidth is 25 kHz. |
------------------------------------------------------------------------ Center Channel No. frequency (MHz)------------------------------------------------------------------------ 1......................................................... 216.0125 2......................................................... 216.0375 3......................................................... 216.0625 4......................................................... 216.0875 5......................................................... 216.1125 6......................................................... 216.1375 7......................................................... 216.1625 8......................................................... 216.1875 9......................................................... 216.212510......................................................... 216.237511......................................................... 216.262512......................................................... 216.287513......................................................... 216.312514......................................................... 216.337515......................................................... 216.362516......................................................... 216.387517......................................................... 216.412518......................................................... 216.437519......................................................... 216.462520......................................................... 216.487521......................................................... 216.512522......................................................... 216.537523......................................................... 216.562524......................................................... 216.587525......................................................... 216.612526......................................................... 216.637527......................................................... 216.662528......................................................... 216.687529......................................................... 216.712530......................................................... 216.737531......................................................... 216.762532......................................................... 216.787533......................................................... 216.812534......................................................... 216.837535......................................................... 216.862536......................................................... 216.887537......................................................... 216.912538......................................................... 216.937539......................................................... 216.962540......................................................... 216.9875------------------------------------------------------------------------
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(2) LPRS transmitters operating on standard band channels must be maintained within a frequency stability of 50 parts per million. (c) Extra band channels. (1) The following table indicates extra band frequencies. The channel bandwidth is 50 kHz. |
------------------------------------------------------------------------ Center Channel No. frequency (MHz)------------------------------------------------------------------------41......................................................... 216.02542......................................................... 216.07543......................................................... 216.12544......................................................... 216.17545......................................................... 216.22546......................................................... 216.27547......................................................... 216.32548......................................................... 216.37549......................................................... 216.42550......................................................... 216.47551......................................................... 216.52552......................................................... 216.57553......................................................... 216.62554......................................................... 216.67555......................................................... 216.72556......................................................... 216.77557......................................................... 216.82558......................................................... 216.87559......................................................... 216.92560......................................................... 216.975------------------------------------------------------------------------
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(2) LPRS transmitters operating on extra band channels must be maintained within a frequency stability of 50 parts per million. (d) Narrowband channels. (1) The following table indicates narrowband frequencies. The channel bandwidth is 5 kHz and the authorized bandwidth is 4 kHz. |
------------------------------------------------------------------------ Center Channel No. frequency (MHz)------------------------------------------------------------------------ 61........................................................ 216.0025 62........................................................ 216.0075 63........................................................ 216.0125 64........................................................ 216.0175 65........................................................ 216.0225 66........................................................ 216.0275 67........................................................ 216.0325 68........................................................ 216.0375 69........................................................ 216.0425 70........................................................ 216.0475 71........................................................ 216.0525 72........................................................ 216.0575 73........................................................ 216.0625 74........................................................ 216.0675 75........................................................ 216.0725 76........................................................ 216.0775 77........................................................ 216.0825 78........................................................ 216.0875 79........................................................ 216.0925 80........................................................ 216.0975 81........................................................ 216.1025 82........................................................ 216.1075 83........................................................ 216.1125 84........................................................ 216.1175 85........................................................ 216.1225 86........................................................ 216.1275 87........................................................ 216.1325 88........................................................ 216.1375 89........................................................ 216.1425 90........................................................ 216.1475 91........................................................ 216.1525 92........................................................ 216.1575 93........................................................ 216.1625 94........................................................ 216.1675 95........................................................ 216.1725 96........................................................ 216.1775 97........................................................ 216.1825 98........................................................ 216.1875 99........................................................ 216.1925100........................................................ 216.1975101........................................................ 216.2025102........................................................ 216.2075103........................................................ 216.2125104........................................................ 216.2175105........................................................ 216.2225106........................................................ 216.2275107........................................................ 216.2325108........................................................ 216.2375109........................................................ 216.2425110........................................................ 216.2475111........................................................ 216.2525112........................................................ 216.2575113........................................................ 216.2625114........................................................ 216.2675115........................................................ 216.2725116........................................................ 216.2775117........................................................ 216.2825118........................................................ 216.2875119........................................................ 216.2925120........................................................ 216.2975121........................................................ 216.3025122........................................................ 216.3075123........................................................ 216.3125124........................................................ 216.3175125........................................................ 216.3225126........................................................ 216.3275127........................................................ 216.3325128........................................................ 216.3375129........................................................ 216.3425130........................................................ 216.3475131........................................................ 216.3525132........................................................ 216.3575133........................................................ 216.3625134........................................................ 216.3675135........................................................ 216.3725136........................................................ 216.3775137........................................................ 216.3825138........................................................ 216.3875139........................................................ 216.3925140........................................................ 216.3975141........................................................ 216.4025142........................................................ 216.4075143........................................................ 216.4125144........................................................ 216.4175145........................................................ 216.4225146........................................................ 216.4275147........................................................ 216.4325148........................................................ 216.4375149........................................................ 216.4425150........................................................ 216.4475151........................................................ 216.4525152........................................................ 216.4575153........................................................ 216.4625154........................................................ 216.4675155........................................................ 216.4725156........................................................ 216.4775157........................................................ 216.4825158........................................................ 216.4875159........................................................ 216.4925160........................................................ 216.4975161........................................................ 216.5025162........................................................ 216.5075163........................................................ 216.5125164........................................................ 216.5175165........................................................ 216.5225166........................................................ 216.5275167........................................................ 216.5325168........................................................ 216.5375169........................................................ 216.5425170........................................................ 216.5475171........................................................ 216.5525172........................................................ 216.5575173........................................................ 216.5625174........................................................ 216.5675175........................................................ 216.5725176........................................................ 216.5775177........................................................ 216.5825178........................................................ 216.5875179........................................................ 216.5925180........................................................ 216.5975181........................................................ 216.6025182........................................................ 216.6075183........................................................ 216.6125184........................................................ 216.6175185........................................................ 216.6225186........................................................ 216.6275187........................................................ 216.6325188........................................................ 216.6375189........................................................ 216.6425190........................................................ 216.6475191........................................................ 216.6525192........................................................ 216.6575193........................................................ 216.6625194........................................................ 216.6675195........................................................ 216.6725196........................................................ 216.6775197........................................................ 216.6825198........................................................ 216.6875199........................................................ 216.6925200........................................................ 216.6975201........................................................ 216.7025202........................................................ 216.7075203........................................................ 216.7125204........................................................ 216.7175205........................................................ 216.7225206........................................................ 216.7275207........................................................ 216.7325208........................................................ 216.7375209........................................................ 216.7425210........................................................ 216.7475211........................................................ 216.7525212........................................................ 216.7575213........................................................ 216.7625214........................................................ 216.7675215........................................................ 216.7725216........................................................ 216.7775217........................................................ 216.7825218........................................................ 216.7875219........................................................ 216.7925220........................................................ 216.7975221........................................................ 216.8025222........................................................ 216.8075223........................................................ 216.8125224........................................................ 216.8175225........................................................ 216.8225226........................................................ 216.8275227........................................................ 216.8325228........................................................ 216.8375229........................................................ 216.8425230........................................................ 216.8475231........................................................ 216.8525232........................................................ 216.8575233........................................................ 216.8625234........................................................ 216.8675235........................................................ 216.8725236........................................................ 216.8775237........................................................ 216.8825238........................................................ 216.8875239........................................................ 216.8925240........................................................ 216.8975241........................................................ 216.9025242........................................................ 216.9075243........................................................ 216.9125244........................................................ 216.9175245........................................................ 216.9225246........................................................ 216.9275247........................................................ 216.9325248........................................................ 216.9375249........................................................ 216.9425250........................................................ 216.9475251........................................................ 216.9525252........................................................ 216.9575253........................................................ 216.9625254........................................................ 216.9675255........................................................ 216.9725256........................................................ 216.9775257........................................................ 216.9825258........................................................ 216.9875259........................................................ 216.9925260........................................................ 216.9975------------------------------------------------------------------------
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(2) LPRS transmitters operating on narrowband channels must be maintained within a frequency stability of 1.5 parts per million. [61 FR 46567, Sept. 4, 1996] § 95.630 WMTS Transmitter frequencies.WMTS transmitters may operate in the frequency bands specified as follows: 608–614 MHz 1395–1400 MHz 1427–1429.5 MHz except at the locations listed in §90.259(b)(4) where WMTS may operate in the 1429–1431.5 MHz band. [69 FR 39868, July 1, 2004] § 95.631 Emission types.(a) A GMRS transmitter must transmit only emission types A1D, F1D, G1D, H1D, J1D, R1D, A3E, F3E, G3E, H3E, J3E or R3E. A non-voice emission is limited to selective calling or tone-operated squelch tones to establish or continue voice communications. See §95.181 (g) and (h). (b) An R/C transmitter may transmit any appropriate non-voice emission which meets the emission limitations of §95.633. (c) A CB transmitter may transmit only emission types A1D, H1D, J1D, R1D, A3E, H3E, J3E, R3E. A non-voice emission is limited to selective calling or tone-operated squelch tones to establish or continue voice communications. See §95.412 (b) and (c). (d) An FRS unit may transmit only emission type F3E or F2D. A non-voice emission is limited to selective calling or tone-operated squelch tones to establish or continue voice communications, digital data transmission of location information or text messaging. (e) No GMRS or CB transmitter shall employ a digital modulation or emission. (f) No GMRS, CB or R/C transmitter shall transmit non-voice data. (g) An LPRS station may transmit any emission type appropriate for communications in this service. Two-way voice communications, however, are prohibited. (h) A MICS station may transmit any emission type appropriate for communications in this service. Voice communications, however, are prohibited. (i) A WMTS station may transmit any emission type appropriate for communications in this service, except for video and voice. Waveforms such as electrocardiograms (ECGs) are not considered video. (j) A MURS transmitter must transmit only emission types A1D, A2B, A2D, A3E, F2B, F1D, F2D, F3E, G3E. Emission types A3E, F3E and G3E include selective calling or tone-operated squelch tones to establish or continue voice communications. MURS transmitters are prohibited from transmitting in the continuous carrier mode. (k) DSRCS-OBUs are governed under subpart L of this part. [53 FR 36789, Sept. 22, 1988. Redesignated and amended at 61 FR 28769, June 6, 1996, and further redesignated and amended at 61 FR 46567, 46568, Sept. 4, 1996; 64 FR 69930, Dec. 15, 1999; 65 FR 44008, July 17, 2000; 65 FR 53190, Sept. 1, 2000; 65 FR 60877, Oct. 13, 2000; 67 FR 63289, Oct. 11, 2002; 68 FR 9901, Mar. 3, 2003; 69 FR 46446, Aug. 3, 2004] § 95.632 MURS transmitter frequencies.(a) The MURS transmitter channel frequencies are 151.820 MHz, 151.880 MHz, 151.940 MHz, 154.570 MHz, 154.600 MHz. (b) The authorized bandwidth is 11.25 kHz on frequencies 151.820 MHz, 151.880 MHz and 151.940 MHz. The authorized bandwidth is 20.0 kHz on frequencies 154.570 and 154.600 MHz. (c) MURS transmitters must maintain a frequency stability of 5.0 ppm, or 2.0 ppm if designed to operate with a 6.25 kHz bandwidth. [65 FR 60877, Oct. 13, 2000, as amended at 67 FR 63289, Oct. 11, 2002] § 95.633 Emission bandwidth.(a) The authorized bandwidth (maximum permissible bandwidth of a transmission) for emission type H1D, J1D, R1D, H3E, J3E or R3E is 4 kHz. The authorized bandwidth for emission type A1D or A3E is 8 kHz. The authorized bandwidth for emission type F1D, G1D, F3E or G3E is 20 kHz. (b) The authorized bandwidth for any emission type transmitted by an R/C transmitter is 8 kHz. (c) The authorized bandwidth for emission type F3E or F2D transmitted by a FRS unit is 12.5 kHz. (d) For transmitters in the LPRS: (1) The authorized bandwidth for narrowband frequencies is 4 kHz and the channel bandwidth is 5 kHz (2) The channel bandwidth for standard band frequencies is 25 kHz. (3) The channel bandwidth for extra band frequencies is 50 kHz. (4) AMTS stations may use the 216.750–217.000 MHz band as a single 250 kHz channel so long as the signal is attenuated as specified in §95.635(c). (e) For transmitters in the MICS: (1) The maximum authorized emission bandwidth is 300 kHz. (2) Lesser authorized emission bandwidths may be employed, provided that the unwanted emissions are attenuated as provided in §95.635 and that the power radiated in any 300 kHz bandwidth does not exceed 25 microwatts EIRP. See §§95.605 and 95.639(g) regarding power measurement procedures. (3) Emission bandwidth will be determined by measuring the width of the signal between two points, one below the carrier center frequency and one above the carrier center frequency, that are 20 dB down relative to the maximum level of the modulated carrier. Compliance with the emission bandwidth limit is based on the use of measurement instrumentation employing a peak detector function with an instrument resolution bandwidth approximately equal to 1.0 percent of the emission bandwidth of the device under measurement. (f) The authorized bandwidth for any emission type transmitted by a MURS transmitter is specified as follows: (1) Emissions on frequencies 151.820 MHz, 151.880 MHz, and 151.940 MHz are limited to 11.25 kHz. (2) Emissions on frequencies 154.570 and 154.600 MHz are limited to 20.0 kHz. (3) Provided, however, that all A3E emissions are limited to 8 kHz. (g) DSRCS-OBUs are governed under subpart L of this part. [53 FR 36789, Sept. 22, 1988. Redesignated and amended at 61 FR 28769, June 6, 1996, and further redesignated and amended at 61 FR 46567, 46568, Sept. 4, 1996; 64 FR 69930, Dec. 15, 1999; 65 FR 60878, Oct. 13, 2000; 67 FR 63289, Oct. 11, 2002; 68 FR 9902, Mar. 3, 2003; 69 FR 46446, Aug. 3, 2004] § 95.635 Unwanted radiation.(a) In addition to the procedures in part 2, the following requirements apply to each transmitter both with and without the connection of all attachments acceptable for use with the transmitter, such as an external speaker, microphone, power cord, antenna, etc. (b) The power of each unwanted emission shall be less than TP as specified in the applicable paragraphs listed in the following table: |
------------------------------------------------------------------------ Applicable Transmitter Emission type paragraphs (b)------------------------------------------------------------------------GMRS.......................... A1D, A3E, F1D, G1D, (1), (3), (7). F3E, G3E with filtering. A1D, A3E, F1D, G1D, (5), (6), (7). F3E, G3E without filtering. H1D, J1D, R1D, H3E, (2), (4), (7). J3E, R3E.FRS........................... F3E with filtering.... (1), (3), (7).R/C: 27 MHz.................... As specified in § (1), (3), (7). 95.631(b). 72-76 MHz................. As specified in § (1), (3), (7), 95.631(b). (10), (11), (12).CB............................ A1D, A3E.............. (1), (3), (8), (9). H1D, J1D, R1D, H3E, (2), (4), (8), J3E, R3E. (9). A1D, A3E type accepted (1), (3), (7). before September 10, 1976. H1D,J1D, R1D, H3E, (2), (4), (7). J3E, R3E type accepted before September 10, 1986.LPRS.......................... As specified in ................ paragraph (c)..MICS.......................... As specified in ................ paragraph (d)..DSRCS-OBU..................... As specified in paragraph (f) of this section..------------------------------------------------------------------------Note 1_Filtering noted for GMRS and FRS transmitters refers to the requirement in § 95.637(b).Note 2_Unwanted R radiation may be stated in mean power or in peak envelope power, provided it is stated in the same parameter as T.Note 3_Paragraphs (b)(1), (b)(10), (b)(11), and (b)(12) of this section apply to transmitters operating in the 72-76 MHz band that are manufactured or imported into the United States on or after March 1, 1992, or marketed or sold on or after March 1, 1993. Paragraphs (b)(1), (b)(3), and (b)(7) of this section apply to transmitters operating in the 72-76 MHz band manufactured or imported into the United States before March 1, 1992, or marketed before March 1, 1993.Note 4_If spurious or harmonic emissions result in harmful interference (any transmission, radiation or induction that endangers the functioning of a radionavigation or other safety service or seriously degrades, obstructs or repeatedly interrupts a radiocommunication service operating in accordance with applicable laws, treaties and regulations), the FCC may, at its discretion, require appropriate technical changes in the station equipment to alleviate the interference, including the use of a low pass filter between the transmitter antenna terminals and the antenna feed line.
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(1) At least 25 dB (decibels) on any frequency removed from the center of the authorized bandwidth by more than 50% up to and including 100% of the authorized bandwidth. (2) At least 25 dB on any frequency removed from the center of the authorized bandwidth by more than 50% up to and including 150% of the authorized bandwidth. (3) At least 35 dB on any frequency removed from the center of the authorized bandwidth by more than 100% up to and including 250% of the authorized bandwidth. (4) At least 35 dB on any frequency removed from the center of the authorized bandwidth by more than 150% up to and including 250% of the authorized bandwidth. (5) At least 83 log10 (fd/5) dB on any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz), of more than 5 kHz up to and including 10 kHz. (6) At least 116 log10 (fd/6.1) dB, or if less, 50 + 10 log10 (T) dB, on any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz), of more than 10 kHz up to and including 250% of the authorized bandwidth. (7) At least 43 + 10 log10 (T) dB on any frequency removed from the center of the authorized bandwidth by more than 250%. (8) At least 53 + 10 log10 (T) dB on any frequency removed from the center of the authorized bandwidth by more than 250%. (9) At least 60 dB on any frequency twice or greater than twice the fundamental frequency. (10) At least 45 dB on any frequency removed from the center of the authorized bandwidth by more than 100% up to and including 125% of the authorized bandwidth. (11) At least 55 dB on any frequency removed from the center of the authorized bandwidth by more than 125% up to and including 250% of the authorized bandwidth. (12) At least 56 + 10 log10 (T) dB on any frequency removed from the center of the authorized bandwidth by more than 250%. (c) For transmitters designed to operate in the LPRS, emissions shall be attenuated in accordance with the following: (1) Emissions for LPRS transmitters operating on standard band channels (25 kHz) shall be attenuated below the unmodulated carrier in accordance with the following: (i) Emissions 12.5 kHz to 22.5 kHz away from the channel center frequency: at least 30 dB; and (ii) Emissions more than 22.5 kHz away from the channel center frequency: at least 43 + 10log(carrier power in watts) dB. (2) Emissions for LPRS transmitters operating on extra band channels (50 kHz) shall be attenuated below the unmodulated carrier in accordance with the following: (i) Emissions 25 kHz to 35 kHz from the channel center frequency: at least 30 dB; and (ii) Emissions more than 35 kHz away from the channel center frequency: at least 43 + 10log(carrier power in watts) dB. (3) Emissions for LPRS transmitters operating on narrowband channels (5 kHz) shall be attenuated below the power (P) of the highest emission, measured in peak values, contained within the authorized bandwidth (4 kHz) in accordance with the following: (i) On any frequency within the authorized bandwidth: Zero dB; (ii) On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 2 kHz up to and including 3.75 kHz: The lesser of 30 + 20(fd-2) dB, or 55 + 10 log(P), or 65 dB; and (iii) On any frequency beyond 3.75 kHz removed from the center of the authorized bandwidth: At least 55 + 10 log(P) dB. (4) Emissions from AMTS transmitters using a single 250 kHz channel shall be attenuated below the unmodulated carrier in accordance with the following: (i) Emissions from 125 kHz to 135 kHz away from the channel center frequency; at least 30 dB; and (ii) Emissions more than 135 kHz away from the channel center frequency; at least 43 + 10log(carrier power in watts) dB. (d) For transmitters designed to operate in the MICS, emissions shall be attenuated in accordance with the following: (1) Emissions more than 250 kHz outside of the MICS band (402–405 MHz) shall be attenuated to a level no greater than the following field strength limits: |
------------------------------------------------------------------------ Field strength Measurement Frequency (MHz) (µV/ distance m) (m)------------------------------------------------------------------------30-88......................................... 100 388-216........................................ 150 3216-960....................................... 200 3960 and above................................. 500 3------------------------------------------------------------------------Note_At band edges, the tighter limit applies.
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(2) The emission limits shown in the above table are based on measurements employing a CISPR quasi-peak detector except that above 1 GHz, the limit is based on measurements employing an average detector. Measurements above 1 GHz shall be performed using a minimum resolution bandwidth of 1 MHz. See also §95.605. (3) The emissions from a MICS transmitter must be measured to at least the tenth harmonic of the highest fundamental frequency designed to be emitted by the transmitter. (4) Emissions within the MICS band (402–405 MHz) more than 150 kHz away from the center frequency of the spectrum the transmission is intended to occupy, will be attenuated below the transmitter output power by at least 20 dB. Compliance with this limit is based on the use of measurement instrumentation employing a peak detector function with an instrument resolution bandwidth approximately equal to 1.0 percent of the emission bandwidth of the device under measurement. (5) Emissions 250 kHz or less that are above and below the MICS band (402–405 MHz) will be attenuated below the maximum permitted output power by at least 20 dB. Compliance with this limit is based on the use of measurement instrumentation employing a peak detector function with an instrument resolution bandwidth approximately equal to 1.0 percent of the emission bandwidth of the device under measurement. (e) For transmitters designed to operate in the MURS, transmitters shall comply with the following: |
------------------------------------------------------------------------ Mask with Mask without Frequency audio low audio low pass filter pass filter------------------------------------------------------------------------151.820 MHz, 151.880 MHz and 151.940 MHz.... (1) (1)154.570 MHz and 154.600 MHz................. (2) (3)------------------------------------------------------------------------
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(1) Emission Mask 1—For transmitters designed to operate with a 12.5 kHz channel bandwidth, any emission must be attenuated below the power (P) of the highest emission contained within the authorized bandwidth as follows: (i) On any frequency from the center of the authorized bandwidth fo to 5.625 kHz removed from fo: Zero dB. (ii) On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 5.625 kHz but no more than 12.5 kHz: at least 7.27(fd−2.88 kHz) dB. (iii) On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 12.5 kHz: at least 50 + 10 log (P) dB or 70 dB, whichever is the lesser attenuation. (2) Emission Mask 2—For transmitters designed to operate with a 25 kHz channel bandwidth that are equipped with an audio low-pass filter, the power of any emission must be below the unmodulated carrier power (P) as follows: (i) On any frequency removed from the assigned frequency by more than 50 percent, but not more than 100 percent of the authorized bandwidth: at least 25 dB. (ii) On any frequency removed from the assigned frequency by more than 100 percent, but not more than 250 percent of the authorized bandwidth: at least 35 dB. (iii) On any frequency removed from the assigned frequency by more than 250 percent of the authorized bandwidth: at least 43 + 10 log (P) dB. (3) Emission Mask 3—For transmitters designed to operate with a 25 kHz channel bandwidth that are not equipped with an audio low-pass filter, the power of any emission must be attenuated below the unmodulated carrier output power (P) as follows: (i) On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 5 kHz, but not more than 10 kHz: at least 83 log (fd/5) dB. (ii) On any frequency removed from the center of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 10 kHz, but not more than 250 percent of the authorized bandwidth: at least 29 log (fd2 /11) dB or 50 dB, whichever is the lesser attenuation. (iii) On any frequency removed from the center of the authorized bandwidth by more than 250 percent of the authorized bandwidth: at least 43 + 10 log (P) dB. (f) DSRCS-OBUs are governed under subpart L of this part. [53 FR 36789, Sept. 22, 1988, as amended at 56 FR 15837, Apr. 18, 1991. Redesignated and amended at 61 FR 28769, 28770, June 6, 1996, and further redesignated and amended at 61 FR 46567, 46568, Sept. 4, 1996; 63 FR 36610, July 7, 1998; 64 FR 69931, Dec. 15, 1999; 65 FR 60878, Oct. 13, 2000; 67 FR 63289, Oct. 11, 2002; 69 FR 46446, Aug. 3, 2004] § 95.637 Modulation standards.(a) A GMRS transmitter that transmits emission types F1D, G1D, or G3E must not exceed a peak frequency deviation of plus or minus 5 kHz. A GMRS transmitter that transmits emission type F3E must not exceed a peak frequency deviation of plus or minus 5 kHz. A FRS unit that transmits emission type F3E must not exceed a peak frequency deviation of plus or minus 2.5 kHz, and the audio frequency response must not exceed 3.125 kHz . (b) Each GMRS transmitter, except a mobile station transmitter with a power output of 2.5 W or less, must automatically prevent a greater than normal audio level from causing overmodulation. The transmitter also must include audio frequency low pass filtering, unless it complies with the applicable paragraphs of §95.631 (without filtering.) The filter must be between the modulation limiter and the modulated stage of the transmitter. At any frequency (f in kHz) between 3 and 20 kHz, the filter must have an attenuation of at least 60 log10 (f/3) dB greater than the attenuation at 1 kHz. Above 20 kHz, it must have an attenuation of at least 50 dB greater than the attenuation at 1 kHz. (c) When emission type A3E is transmitted, the modulation must be greater than 85% but must not exceed 100%. Simultaneous amplitude modulation and frequency or phase modulation of a transmitter are not permitted. (d) When emission type A3E is transmitted by a CB transmitter having a TP of greater than 2.5 W, the CB transmitter must automatically prevent the modulation from exceeding 100%. (e) Each CB transmitter that transmits emission type H3E, J3E or R3E must be capable of transmitting the upper sideband. The capability of also transmitting the lower sideband is permitted. (f) DSRCS-OBUs are governed under subpart L of this part. [53 FR 36789, Sept. 22, 1988. Redesignated and amended at 61 FR 28769, 28770, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996; 69 FR 46446, Aug. 3, 2004] § 95.639 Maximum transmitter power.(a) No GMRS transmitter, under any condition of modulation, shall exceed: (1) 50 W Carrier power (average TP during one unmodulated RF cycle) when transmitting emission type A1D, F1D, G1D, A3E, F3E or G3E. (2) 50 W peak envelope TP when transmitting emission type H1D, J1D, R1D, H3E, J3E or R3E. (b) No R/C transmitter, under any condition of modulation, shall exceed a carrier power or peak envelope TP (single-sideband only) of: (1) 4 W in the 26–27 MHz frequency band, except on channel frequency 27.255 MHz; (2) 25 W on channel frequency 27.255 MHz; (3) 0.75 W in the 72–76 MHz frequency band. (c) No CB transmitter, under any condition of modulation, shall exceed: (1) 4 W Carrier power when transmitting emission type A1D or A3E; (2) 12 W peak envelope TP when transmitting emission type H1D, J1D, R1D, H3E, J3E or R3E. Each CB transmitter which transmits emission type H3E, J3E or R3E must automatically prevent the TP from exceeding 12 W peak envelope TP or the manufacturer's rated peak envelope TP, whichever is less. (d) No FRS unit, under any condition of modulation, shall exceed 0.500 W effective radiated power (ERP). (e) The maximum transmitter output power authorized for LPRS stations is 100 mW. (f) In the MICS the following limits apply: (1) The maximum EIRP for MICS transmitter stations is 25 microwatts. The antenna associated with any MICS transmitter must be supplied with the transmitter and shall be considered part of the transmitter subject to equipment authorization. Compliance of any MICS transmitter with the 25 microwatts EIRP limit may be determined by measuring the radiated field from the equipment under test at 3 meters and calculating the EIRP. The equivalent radiated field strength at 3 meters for 25 microwatts EIRP is 18.2 mV/meter when measured on an open area test site, or 9.1 mV/meter when measured on a test site equivalent to free space such as a fully anechoic test chamber. In either case, compliance is based on measurements using a peak detector function and measured over an interval of time when transmission is continuous and at its maximum power level. In lieu of using a peak detector function, instrumentation techniques set forth in ANSI C63.17–1998, Section 6.1.2.2.1 or Section 6.1.2.2.2 may be used in determining compliance with the above specifications. (2) For a transmitter intended to be implanted in a human body, the following test fixture must be used to simulate operation of the implant under actual operating conditions. See §95.605. (i) For measurement purposes to determine compliance with emission limits, the radiating characteristics of an implant transmitter placed in a test fixture should approximate those of an implant transmitter placed in a human body. An appropriate human torso simulator for testing medical implant transmitters consists of a cylindrical Plexiglas container with a size of 30 cm by 76 cm with a sidewall thickness of 0.635 cm. It must be completely filled with a material that is sufficiently fluidic that it will flow around the implant without any voids. The dielectric and conductivity properties of this material must match the dielectric and conductivity properties of human muscle tissue at 403.5 MHz. All emissions measurements will be made using the above specification at a nominal temperature of 20–25°C. Simple saline solutions do not meet the above criteria. A mounting grid for the implant inside the container must be provided that permits the radiating element or elements of the implant to be positioned vertically and horizontally. The grid should also support any additional implant leads associated with the therapeutic function in a fixed repeatable manner. The implant must be mounted 6 cm from the sidewall and centered vertically within the container. The above fixture shall be placed on a turntable such that the implant transmitter will be located at a nominal 1.5-meter height above ground and at a 3-meter distance from the measurement antenna. Radiated emissions measurements shall then be performed to insure compliance with the applicable technical specifications. (ii) A formula for a suitable tissue substitute material is defined in the paper “Simulated Biological Materials for Electromagnetic Radiation Absorption Studies” by G. Hartsgrove, A. Kraszewski, and A. Surowiec as published in “Bioelectromagnetics 8:29–36 (1987)”. (3) The power radiated in any 300 kHz bandwidth shall not exceed 25 microwatts EIRP. See §§95.633(e) and 95.639(g). (g) The maximum field strength authorized for WMTS stations in the 608–614 MHz band is 200 mV/m, measured at 3 meters. For stations in the 1395–1400 MHz and 1427–1429.5 MHz bands, the maximum field strength is 740 mV/m, measured at 3 meters. (h) No MURS unit, under any condition of modulation, shall exceed 2 Watts transmitter power output. (i) DSRCS-OBUs are governed under subpart L of this part, except the maximum output power for portable DSRCS-OBUs is 1.0 mW. For purposes of this paragraph, a portable is a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. [53 FR 36789, Sept. 22, 1988; 53 FR 44144, Nov. 1, 1988. Redesignated and amended at 61 FR 28769, 28770, June 6, 1996, and further redesignated and amended at 61 FR 46567, 46569, Sept. 4, 1996; 64 FR 69932, Dec. 15, 1999; 65 FR 44008, July 17, 2000; 65 FR 53190, Sept. 1, 2000; 65 FR 60878, Oct. 13, 2000; 67 FR 6193, Feb. 11, 2002; 67 FR 8579, Feb. 25, 2002; 67 FR 63290, Oct. 11, 2002; 69 FR 46446, Aug. 3, 2004] Certification Requirements§ 95.643 DSRCS-OBU certification.Sections 95.645 through 95.655 do not apply to certification of DSRCS-OBUs. DSRCS-OBUs must be certified in accordance with subpart L of this part and subpart J of part 2 of this chapter. [69 FR 46446, Aug. 3, 2004] § 95.645 Control accessibility.(a) No control, switch or other type of adjustment which, when manipulated, can result in a violation of the rules shall be accessible from the transmitter operating panel or from exterior of the transmitter enclosure. (b) An R/C transmitter which incorporates plug-in frequency determining modules which are changed by the user must be certificated with the modules. Each module must contain all of the frequency determining circuitry including the oscillator. Plug-in crystals are not considered modules and must not be accessible to the user. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996; 63 FR 36610, July 7, 1998] § 95.647 FRS unit and R/C transmitter antennas.The antenna of each FRS unit, and the antenna of each R/C station transmitting in the 72–76 MHz band, must be an integral part of the transmitter. The antenna must have no gain (as compared to a half-wave dipole) and must be vertically polarized. [61 FR 28770, June 6, 1996. Redesignated at 61 FR 46567, Sept. 4, 1996] § 95.649 Power capability.No CB, R/C, LPRS, FRS, MICS, MURS or WMTS unit shall incorporate provisions for increasing its transmitter power to any level in excess of the limits specified in §95.639. [65 FR 60878, Oct. 13, 2000] § 95.651 Crystal control required.All transmitters used in the Personal Radio Services must be crystal controlled, except an R/C station that transmits in the 26–27 MHz frequency band, a FRS unit, a LPRS unit, a MURS unit, a MICS transmitter, or a WMTS unit. [65 FR 60878, Oct. 13, 2000] § 95.653 Instructions and warnings.(a) A user's instruction manual must be supplied with each transmitter marketed, and one copy (a draft or preliminary copy is acceptable provided a final copy is provided when completed) must be forwarded to the FCC with each request for certification. (b) The instruction manual must contain all information necessary for the proper installation and operation of the transmitter including: (1) Instructions concerning all controls, adjustments and switches that may be operated or adjusted without resulting in a violation of the rules. (2) Warnings concerning any adjustment that could result in a violation of the rules or that is recommended to be performed by or under the immediate supervision and responsibility of a person certified as technically qualified to perform transmitter maintenance and repair duties in the private land mobile services and fixed services by an organization or committee representative of users of those services. (3) Warnings concerning the replacement of any transmitter component (crystal, semiconductor, etc.) that could result in a violation of the rules. (4) For a CMRS transmitter, warnings concerning licensing requirements and information concerning license application procedures. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996; 63 FR 36610, July 7, 1998] § 95.655 Frequency capability.(a) No transmitter will be certificated for use in the CB service if it is equipped with a frequency capability not listed in §95.625, and no transmitter will be certificated for use in the GMRS if it is equipped with a frequency capability not listed in §95.621, unless such transmitter is also certificated for use in another radio service for which the frequency is authorized and for which certification is also required. (Transmitters with frequency capability for the Amateur Radio Services and Military Affiliate Radio System will not be certificated.) (b) All frequency determining circuitry (including crystals) and programming controls in each CB transmitter and in each GMRS transmitter must be internal to the transmitter and must not be accessible from the exterior of the transmitter operating panel or from the exterior of the transmitter enclosure. (c) No add-on device, whether internal or external, the function of which is to extend the transmitting frequency capability of a CB transmitter beyond its original capability, shall be manufactured, sold or attached to any CB station transmitter. (d) No transmitter will be certificated for use in MURS if it is equipped with a frequency capability not listed in §95.632. [53 FR 47718, Nov. 25, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996 and amended at 63 FR 36611, July 7, 1998; 67 FR 63290, Oct. 11, 2002; 69 FR 32886, June 14, 2004] Additional Certification Requirements for CB Transmitters§ 95.665 [Reserved]§ 95.667 CB transmitter power.The dissipation rating of all the semiconductors or electron tubes which supply RF power to the antenna terminals of each CB transmitter must not exceed 10 W. For semiconductors, the dissipation rating is the greater of the collector or device dissipation value established by the manufacturer of the semiconductor. These values may be temperature de-rated by no more than 50 °C. For an electron tube, the dissipation rating is the Intermittent Commercial and Amateur Service plate dissipation value established by the manufacturer of the electron tube. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996] § 95.669 External controls.(a) Only the following external transmitter controls, connections or devices will normally be permitted in a CB transmitter: (1) Primary power connection. (Circuitry or devices such as rectifiers, transformers, or inverters which provide the nominal rated transmitter primary supply voltage may be used without voiding the transmitter certification.) (2) Microphone connection. (3) Antenna terminals. (4) Audio frequency power amplifier output connector and selector switch. (5) On-off switch for primary power to transmitter. This switch may be combined with receiver controls such as the receiver on-off switch and volume control. (6) Upper/lower sideband selector switch (for a transmitter that transmits emission type H3E, J3E or R3E). (7) Carrier level selector control (for a transmitter that transmits emission type H3E, J3E or R3E.) This control may be combined with the sideband selector switch. (8) Channel frequency selector switch. (9) Transmit/receive selector switch. (10) Meter(s) and selector switch(es) for monitoring transmitter performance. (11) Pilot lamp(s) or meter(s) to indicate the presence of RF output power or that the transmitter control circuits are activated to transmit. (b) The FCC may authorize additional controls, connections or devices after considering the functions to be performed by such additions. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996; 63 FR 36611, July 7, 1998] § 95.671 Serial number.The serial number of each CB transmitter must be engraved on the transmitter chassis. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996] § 95.673 Copy of rules.A copy of part 95, subpart D, of the FCC Rules, current at the time of packing of the transmitter, must be furnished with each CB transmitter marketed. [53 FR 36789, Sept. 22, 1988. Redesignated at 61 FR 28769, June 6, 1996, and further redesignated at 61 FR 46567, Sept. 4, 1996] Appendix 1 to Subpart E of Part 95—Glossary of TermsThe definitions used in this subpart E are: Authorized bandwidth. Maximum permissible bandwidth of a transmission. Carrier power. Average TP during one unmodulated RF cycle. CB. Citizens Band Radio Service. CB transmitter. A transmitter that operates or is intended to operate at a station authorized in the CB. Channel frequencies. Reference frequencies from which the carrier frequency, suppressed or otherwise, may not deviate by more than the specified frequency tolerance. Crystal. Quartz piezo-electric element. Crystal controlled. Use of a crystal to establish the transmitted frequency. dB. Decibels. EIRP. Effective Isotropic Radiated Power. Antenna input power times gain for free-space or in-tissue measurement configurations required by MICS, expressed in watts, where the gain is referenced to an isotropic radiator. FCC. Federal Communications Commission. Filtering. Refers to the requirement in §95.633(b). FRS. Family Radio Service. GMRS. General Mobile Radio Service. GMRS transmitter. A transmitter that operates or is intended to operate at a station authorized in the GMRS. Harmful interference. Any transmission, radiation or induction that endangers the functioning of a radionavigation or other safety service or seriously degrades, obstructs or repeatedly interrupts a radiocommunication service operating in accordance with applicable laws, treaties and regulations. Mean power. TP averaged over at least 30 cycles of the lowest modulating frequency, typically 0.1 seconds at maximum power. Medical Implant Communications Service (MICS) transmitter. A transmitter authorized to operated in the MICS. Medical implant device. Apparatus that is placed inside the human body for the purpose of performing diagnostic or therapeutic functions. Medical implant event. An occurrence or the lack of an occurrence recognized by a medical implant device, or a duly authorized health care professional, that requires the transmission of data from a medical implant transmitter in order to protect the safety or well-being of the person in whom the medical implant transmitter has been implanted. Medical implant programmer/control transmitter. A MICS transmitter that operates or is designed to operate outside of a human body for the purpose of communicating with a receiver connected to a medical implant device. Medical implant transmitter. A MICS transmitter that operates or is designed to operate within a human body for the purpose of facilitating communications from a medical implant device. MICS. Medical Implant Communications Service. MURS. Multi-Use Radio Service. Peak envelope power. TP averaged during one RF cycle at the highest crest of the modulation envelope. R/C. Radio Control Radio Service. R/C transmitter. A transmitter that operates or is intended to operate at a station authorized in the R/C. RF. Radio frequency. TP. RF transmitter power expressed in W, either mean or peak envelope, as measured at the transmitter output antenna terminals. Transmitter. Apparatus that converts electrical energy received from a source into RF energy capable of being radiated. W. Watts. [65 FR 60878, Oct. 13, 2000] Browse Previous | Browse Next
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