Not sure why everyone is linking me articles on the CFRs, long abandoned listening posts too far from anything to matter at all, and the few one off cases where someone did something dumb enough, long enough, that it got the FCCs attention, which is newsworthy because they usually don't pay any attention.
You can fuck with RF as much as you want, as long as you A: don't do it constantly, B: don't do it in the same location every time (at home), and C: don't do it in a band belonging to someone who has their FCC field office's number on a post-it note and has paid the FCC lots of money.
The FCC told the police they didn't care, it took a bunch of HAMs running around to find the source and politely ask them to maybe fix it or at least consider turning it off if someone else complains again.
You can fuck with RF as much as you want, as long as you A: don't do it constantly, B: don't do it in the same location every time (at home), and C: don't do it in a band belonging to someone who has their FCC field office's number on a post-it note and has paid the FCC lots of money.