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distress frequency

American  

noun

  1. a radio frequency band reserved for emergency signals from aircraft or ships in distress.

Example Sentences

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Typically, personnel who man the Coast Guard�s existing VHF communication system listen to a number of radios tuned to channel 16, the international hailing and distress frequency, alert for a Mayday call among all of the routine traffic.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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