I have a Uniden Washington. I’ve had it for 15 years never had a problem with it. A month ago I started experiencing feedback and squealing when I key it up. Randomly mind you, but I don’t get it. I’ve been running a silver eagle on it from day one. I’m certain the radio doesn’t have talk back in it although running a power mic on it gives a hint of talk back. It will even feedback with the stock mic on it. Does anyone have any thoughts?