Sec.  22.861   Emission limitations.

   

   Link to an amendment published at  70 FR 19310 , Apr. 13, 2005.

   Any appropriate emission type may be used to provide air-ground
   radiotelephone service on the channels listed in Sec. 22.857, provided
   that the emission limitations of this section are met.

   (a) Emission mask. The emission mask described in this paragraph
   applies instead of those in Sec. 22.359. The power of any emission in each
   of the adjacent channels must be at least 30 dB below the power of the
   total emission. The power of any emission in any of the channels other
   than the one being used and the adjacent channels must be at least 50
   dB below the power of the total emission.

   (b) Airborne mobile transmitters. The power of any emission in each of
   the adjacent channels must not exceed -130 dBm at any ground station
   receiver, assuming a 0 dBi receive antenna. The power of any emission
   in any of the channels other than the one being used and the adjacent
   channels must not exceed -148 dBm at any ground station receiver,
   assuming a 0 dBi receive antenna.

   (c) Ground station transmitters. The effective radiated power (ERP) of
   any emission outside of the frequency ranges set forth in Sec. 22.857 must
   not exceed -10 dBm. The ERP of any emission in each of the adjacent
   channels must not exceed +10 dBm. The ERP of any emission in any of
   the channels other than the one being used and the adjacent channels
   must not exceed -5 dBm.

   (d) If an emission on any frequency outside of the authorized
   bandwidth causes harmful interference, the FCC may require greater
   attenuation of that emission than required in paragraph (a) of this
   section.