I have a radio shack pro 2096 scanner. And now all the sudden it will randomly stop on a channel and it's nothing but static. Also after someone talkes on a station and the transmission cuts out, it will stay on that channel and again there is nothing but static, I do not have a delay set. Last week it worked A ok like it should, now it's goofing up. I also noticed that if I put the squelch all the way to max, this will somewhat stop the static issue. When the radio wad working fine, I had the squelch set just past where it stops hissing. Anyone know whqt could be causing this?