§  23.13   Types of emission.

   Stations in the international fixed public radiocommunication services
   may be authorized to use any of the types of emission or combinations
   thereof, described in part 2 of this chapter, as well as new types
   which may be developed: Provided, That harmful interference to adjacent
   operations is not caused thereby, And provided further, That the
   intelligence to be transmitted will use the bandwidth requested to a
   degree of efficiency compatible with the current state of the art. A
   determination of the possibilities of interference will be made as
   outlined in § 23.20. In certain cases frequencies or emissions may be
   authorized on a temporary basis to determine if interference will
   occur. During normal operations, emissions shall be centered about an
   assigned frequency. Non-centered emissions may be employed for short
   periods of time as needed to avoid interfering signals or meet
   fluctuating traffic loading: Provided, That the occupied bandwidth of
   these emissions be contained within the authorized bandwidth, And
   provided further , That prior to any such use, the Commission be
   notified of the reference frequency or frequencies proposed to be used
   in lieu of the assigned frequency.

   [ 38 FR 22479 , Aug. 21, 1973]