My experience has actually been the opposite. Most of the FPV pilots I've met are running their video TX at a power output that should require them to be an amature radio operator, whereas most of the guys controlling stuff on long range UHF actually know what they're doing and do so within spec.
Heh, yes, that's true about the FPV pilots. I'm pretty sure I've got an FPV camera kicking around here from China that actually transmits on the amateur bands, although it definitely wasn't marketed as a ham transmitter :). I also suspect that it'd be way out of spec, but I haven't actually hooked it up to the spectrum analyzer, nor do I use it. It's a curiosity that came in a kit a long time ago.
And I suspect the reason the people on long range UHF do so within spec is because, in my experience anyway, the ham guys get more and more grumpy as you go down in frequency. That video transmitter above operates in the 1.2GHz/23cm band, and no one (around here at least) seems to particularly care too much about it. Going downwards, the UHF (440MHz/70cm) band and the VHF (146MHz/2m) band are used pretty frequently for voice communication, so someone splatting all over the band would have people enraged. Going lower into the HF (<30MHz) bands, you've got people worldwide using those for communication, and they're more than happy to get the FCC or Industry Canada or whatever your local regulatory body is on your ass for breaking the rules.
