§ 73.1520   Operation for tests and maintenance.

   (a) Broadcast stations may be operated for tests and maintenance of their
   transmitting systems on their assigned frequencies using their licensed
   operating power and antennas during their authorized hours of operation
   without specific authorization from the FCC.

   (b) Licensees of AM stations may operate for tests and maintenance during
   the hours from 12 midnight local time to local sunrise, if no interference
   is caused to other stations maintaining a regular operating schedule within
   such period. No AM station licensed for “daytime” or “specified hours” of
   operation may broadcast any regular or scheduled programs during this period
   of test and maintenance operation.

   (c) Licensees of AM stations may obtain special antenna test authorizations,
   and operate under the provisions described in § 73.157, to operate with
   nighttime facilities during daytime hours in conducting directional antenna
   field strength and antenna proof of performance measurements.

   [ 43 FR 32783 , July 28, 1978, as amended at  45 FR 6401 , Jan. 28, 1980]

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