[wormik]

Umm, you make it look like a trivial problem to solve, which IMHO is not the case when you take the fact you can risk life in prison or death in to the account. I'm from ex-communism country - where a lot of successful broadcastings happened, nevertheless, they got always identified at the end of the day - and then, guess what happened. When you are facing such restrictive conditions, even signal itself is good cause to get you in trouble - no matter whether the information carried is understood/sniffed or not, bounced or not. Anti-triangulation measures you are talking about have IMHO no practical use as long as anyone on the other side is using mobile radio signal detectors. Or if you know about real world application - I'd love to learn about it. Cheers

[bwarp]

It's not trivial - but it's not unsurmountable.

Regarding triangulation, it's about finding the source. The source is hard to track reliably if it moves, especially away from the detection devices or rapidly out of range. Try tracking a broadcast source from a vehicle driving around you in a circle. If it's omnidirectional you'd have to be in the line of sight. If there is interference across the band, selectivity of the RDF recievers is compromised. Radio direction finding is surprisingly painful.

Hint: The anti-triangulation measures are actively used on Clansman radio sets.