While I haven't dug deep in to the black arts that is RF and MW, it would indeed hide it better (the hopping), but because the noise floor would have 'more ener

While I haven't dug deep in to the black arts that is RF and MW, it would indeed hide it better (the hopping), but because the noise floor would have 'more energy' during an active transmitter they would either always have to be transmitting or be so close to each other that they can keep the energy low. I think the analysis appliances are capable of finding hopping transmissions, even in the lower range (still expensive) spectrum analysers. It does of course depend on how fast they can scan the whole range and how wide the range is. But Hanlon's razor applies, and indeed, it is more likely incompetence.