I was cleaning out my shop the other day and came across an old Connex 3600 hp radio. I tried hooking it up in my Jeep Wrangler and as soon as I push the push to talk button I get a loud squeal. Maybe this is the reason I wasn't using it. I hooked it up in my basement using an inverter and a short antenna and I talked to a guy 5 miles away. Anybody have any ideas what to do here?