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Coast Guard (United States) Scanner Frequencies and Radio Frequency Reference... during a water rescue in Muskegon Michigan yesterday, My SDS100 got a few 1sec calls from USCG NET 127 that sounded encrypted / scrambled. Are these channels encrypted by chance? Note: Im aware that encrypted audio should not be audible, but I have had multiple "accidental decodes" on my SDS100 and SDRTrunk where encrypted audio was demodulated and audible, but not decrypted.)

Heres a screen recording of the audio... New video by Austin Hruskach