§ 80.92   Prevention of interference.

   (a) The station operator must determine that the frequency is not in
   use by monitoring the frequency before transmitting, except for
   transmission of signals of distress.

   (b) When a radiocommunication causes interference to a communication
   which is already in progress, the interfering station must cease
   transmitting at the request of either party to the existing
   communication. As between nondistress traffic seeking to commence use
   of a frequency, the priority is established under § 80.91.

   (c) Except in cases of distress, communications between ship stations
   or between ship and aircraft stations must not interfere with public
   coast stations. The ship or aircraft stations which cause interference
   must stop transmitting or change frequency upon the first request of
   the affected coast station.

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