Technically encryption on amateur radio bands is illegal. However, in reality the FCC has been letting it happen for years and the ARRL has turned a blind eye to it. D-STAR uses a proprietary vocoder that takes an analog voice signal and converts it into a data bitstream.Any radio user - publc safety, ham, CBer - should be allowed to use encryption. Radio is for users to communicate with specific people who they've chosen to be in on the conversation. There is no right to eavesdrop or to be part of the conversation. 100% of law enforcement comms should be encrypted.
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