>>771362Not about listening on the output, thats fine.
Repeaters listen on one frequency, and retransmit that signal on another frequency. That difference is called a "split". Amateur, that split is usually 600kHz for VHF, 5MHz for UHF. Commercial can be wider or narrower based on band plans and allocations, but since combiners/duplexers are typically set up for 600k/5meg, the splits are usually around there.
Important thing here is that the repeater doesn't transmit on the same frequency it listens on.
Repeaters are set up in locations for good coverage. Put a good antenna on it and they've got real good ears.
Your handheld isn't set up for good coverage, nor is the antenna real great.
So you're parked on one frequency that happens to be the input to a local sheriffs analog repeater. You listen, but since all the officers are on their handhelds, you can't hear them directly, but the repeater can.
Your radio isn't set for PL/DPL tones (sort of an "access key" for the repeater input), so the repeater's not going to repeat your signal. But there's a phenomenon known as the "capture effect", where the receiver (on the repeater) can't lock into an allowed signal (officer's radio) with another source of interference (your radio) on the same frequency. The receiver either drowns out one signal entirely, or "picket-fences" between the two (more common with mobiles).
That interference, deliberate or not, is what the FCC frowns upon. Commercial enforcement does happen. Amateurs call it "foxhunting". Fines are often levied against offenders.
Don't just "pick a channel that's quiet" and use it. Know the band plans and use a frequency you're licensed for and allowed to use.
>Select all images with trees 
