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by fapjacks 3927 days ago
There seems to be some incredibly bizarre idea floating around here that it is illegal to MONITOR using the equipment (id est "listen") and that is simply not true, except for listening to cell frequencies. That is in American law, but here's the thing: They will not be able to determine that you're listening on those frequencies without looking at your equipment. You can possess and operate your equipment in monitor mode without a license. One must simply get a license (in most countries) to transmit using the equipment. Now, the other thing I want to mention is that the parent comment is right that the FCC has dogs of war that will chase you down and put you in jail (or levy heavy fines) for operating without a license. And they do chase people down with location equipment. I'm not advocating operating a station without a license, but if you keep the power very low and use it sparsely for testing, you have a very, very small chance of being caught by the FCCs enforcement arm. And in most of these cases of nerds transmitting without a license, they are satisfied with merely confiscating your equipment.
1 comments

I've seen some of the enforcement actions - on a first offense they often just give you a stern warning unless it's clear you were doing it willfully and maliciously (interfering with a company's communications because you have a bone to pick, for instance).

Amusingly, there's been a few cases local law enforcement has asked the ham community to RDF people using their frequencies - at least here most law enforcement uses APCO-25 without encryption, so is easy to monitor and mess with by and large - because it's easier than having FCC get involved.

My favorite mistaken transmission was when a friend noted spurs coming off the strategic command in Omaha that were ending up on ham frequencies. We reported it, an hour later all their spurs were gone.

In any event - yes - monitor mode stuff they won't be able to detect unless they see your equipment, but most equipment is required to restrict the cell frequencies in such a way it's not easy to modify to detect. Most other equipment you have a jumper to enable "everything but cell" TX/RX (Looking at you Yaesu VX-9).

RDF = Radio Direction Finder