Ok so I'm really new to the repeater world and I have mine setup on 462.675 pl141.3 and the last two days after you release the ptt button there is a loud squeal during the short tail. It's not every time but most. It's only done it since it's gotten real cold outside. The rptr it's self is indoors so that's warm. I had a audio file but I can't upload it.. Any ideas? Bill Wqtk732