Some are internationally regulated, others locally. Check frequency bands.
It depends on where you live and what is allowed. Try the police band - that gives the fastest result. Or the spectral inspection work band. Or let airplanes crash.
Just a thought lyn some of the communication info requests we get here might be from person or persons who may wish to listen in on covert comms from the military if you get my drift.
requests seem to be coming from the right neck of the woods.
Years ago in yet another of my many jobs while working for a car alarm company i got a call from northern ireland the man wanted to know if it was possible to turn his car alarm on from half a mile ( the correct answer is yes,) but i told him no for obvious reasons.
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