Sec. 22.161  Application requirements for ASSB.

    Applications for base stations employing amplitude compandored 
single sideband modulation (ASSB) must contain the following 
information:
    (a) The application must describe fully the modulation 
characteristics, emission and occupied bandwidth, and specify the center 
frequency of the

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emission for each channel, carrier frequency, and pilot channels, if 
any. The emission must fall completely within a channel assignable for 
two-way operation in the Paging and Radiotelephone Service, Rural 
Radiotelephone Service or Offshore Radiotelephone Service.
    (b) The application must contain interference studies between 
stations within an authorized bandwidth, whether FM-to-ASSB, ASSB-to-FM, 
or ASSB-to-ASSB in accordance with the following: For ASSB stations, the 
transmitter nearest to the protected station must be used. The effective 
radiated power in the direction of the protected station must be the sum 
of the peak effective radiated power of all transmitters in the group, 
in the direction of the protected station. The antenna center of 
radiation height above average terrain must be the highest antenna 
center of radiation height of any transmitter in the group in the 
direction of the protected station. The channel of the group is assumed 
to be the same as that of the protected station (co-channel), and 
studies must be made in accordance with Sec. 22.567.