[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.