[Code of Federal Regulations]
[Title 47, Volume 5, Parts 80 to End]
[Revised as of October 1, 1999]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR95.635]
[Page 541-542]
TITLE 47--TELECOMMUNICATION
PART 95--PERSONAL RADIO SERVICES--Table of Contents
Subpart E--Technical Regulations
Sec. 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 paragraph:
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Transmitter Emission type Applicable paragraphs
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GMRS.................................... A1D, A3E, F1D, G1D, F3E, G3E (1), (3), (7)
with filtering.
A1D, A3E, F1D, G1D, F3E, G3E (5), (6), (7)
without filtering.
H1D, J1D, R1D, H3E, J3E, R3E... (2), (4), (7)
FRS..................................... F3E with filtering............. (1), (3), (7)
Note: Filtering refers to the requirement in Sec. 95.635(b) R/C:
27 MHz band............................. As specified in Sec. 95.629(b) (1), (3), (7)
[[Page 542]]
72-76 MHz band.......................... As specified in Sec. 95.629(b) (1), (3), (7), (10), (11), (12)
CB...................................... A1D, A3E....................... (1), (3), (8), (9)
H1D, J1D, R1D, H3E, J3E, R3E... (2), (4), (8), (9)
A1D, A3E authorized before (1), (3), (7)
September 10, 1976.
H1D, J1D, R1D, H3E, J3E, R3E (2), (4), (7)
authorized before September
10, 1986.
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(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.
[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]