I REALLY WANT to love the GD-88. It is… I woke up this morning to no receive audio. I tested on another DMR repeater. No audio. I tested on an FM repeater. No audio. I checked other sounds the radio makes (like power on). No audio. I plug in a hand speaker/mic… AUDIO! Well in the speaker mic anyway. Huh… Turns out there is a setting on the radio to only use an external speaker. And it got switched on between me signing off last night, and turning the radio on this morning.