§ 95.1957   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
   radiation.

   (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
   kHz;

   (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
   1250 kHz;

   (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 reference 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 reference 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
   reference bandwidth.

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