Sec.  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 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 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 resolution bandwidth.

   [ 57 FR 8275 , Mar. 9, 1992, as amended at  63 FR 36611 , July 7, 1998]