FCC 95.857 Revised as of December 4, 2012
Goto Year:2011 |
§ 95.857 Emission standards.
(a) All transmissions by each CTS and by each RTU shall use an emission
type that complies with the following standard for unnecessary
(b) All spurious and out-of-band emissions shall be attenuated:
(1) Zero dB on any frequency within the authorized frequency segment.
(2) At least 28 dB on any frequency removed from the midpoint of the
assigned frequency segment by more than 250 kHz up to and including 750
(3) At least 35 dB on any frequency removed from the midpoint of the
assigned frequency segment by more than 750 kHz up to and including
(4) At least 43 plus 10 log (base 10) (mean power in watts) dB on any
frequency removed from the midpoint of the assigned frequency segment
by more than 1250 kHz.
(c) When testing for certification, all measurements of unnecessary
radiation are performed using a carrier frequency as close to the edge
of the authorized frequency segment as the transmitter is designed to
be capable of operating.
(d) The resolution bandwidth of the instrumentation used to measure the
emission power shall be 100 Hz for measuring emissions up to and
including 250 kHz from the edge of the authorized frequency segment,
and 10 kHz for measuring emissions more than 250 kHz from the edge of
the authorized frequency segment. If a video filter is used, its
bandwidth shall not be less than the resolution bandwidth. The power
level of the highest emission within the frequency segment, to which
the attenuation is referenced, shall be remeasured for each change in
[ 57 FR 8275 , Mar. 9, 1992, as amended at 63 FR 36611 , July 7, 1998]
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