This is unlikely. Amateur radio bands usage, for example, must very much not be encrypted, and my recollection is messages are supposed to be "of a personal or

This is unlikely. Amateur radio bands usage, for example, must very much not be encrypted, and my recollection is messages are supposed to be "of a personal or technical nature" according to ITU rules. i.e. there is regulation around not using radio for subverting states. Within CB might be another story, but it would be highly likely to annoy other CB users.