We use 463.225 DCS 116 as our primary dispatch frequency here at Fairfield University. Funny thing about that frequency which I'm sure you have all noticed... if you listen to it without PL tones put in, you get constant interference. It sounds like someone is keying up for one second, then stopping, again and again and again. Regardless of the squelch setting, I get that. And not just here at FU, I get it everywhere in the state. If you're right on campus sometimes it stops, but when I'm home in South Windsor, it's bad. Any ideas as to what that is?