[nvelty]

It's actually a pretty common use case, if employed properly. For example, I've heard that the Cuban expat community in Florida and their cohort still in-country will use HF radio to pass information. During the recent protests there was reports of the Cuban government employing signal jamming on frequencies associated with this. It gets harder to DF a signal if you use directional antennas and low power, short transmissions. Digital protocols help a lot with this. If you have a communications schedule with the receiving end and perhaps have exchanged one time pads, then setting up a temporary station at a pre-set time to transmit a message then book it, it'll be quite hard for anyone to catch you. And, of course, if you fall into this use case then laws concerning encryption are probably of lesser concern to you.

[generalizations]

That's pretty cool. Though, again, that use case is viable because of encryption.