out of range

Hello, I'm new to radio maintenance. I have a Motorola XPR 7550e that when it turns out, it flashes "out of range" and has a none stop steady almost like two radios stepping on each other. I also can't change the channels, zones, etc. I tried swapping out the antennas with no luck. I wanted to...

Hey everyone, So I have an XTS 3000 and I get the out of range tone on the trunking system only when its in the housing (like it should be for normal use). When I remove the housing the radio works no problem - i can hear the traffic on the talkgroup. I am only keeping the radio connected by...