Communications Support Forums

I've got an XPR6550 that has me scratching my head a little bit regarding it's mic volume. If I set the radio to digital AGC (yes, I know.. it sucks) the received audio on other radios is so faint you can hardly hear it. If I attach an RSM the audio booms through, loud and clear. If I turn AGC off I have to adjust the mic gain to +20 just to make it 'ok'. With this setting both the on board mic and RSM come thru at basically the same level. So... I was sort of thinking that maybe it was a problem with the mic itself, but I've tried rehousing the radio with the same results. I've dealt with lots of 6350/6550's and I've never had one with soft audio like this... Anyone have any suggestions? Radio is running the latest firmware (1.12.13).

Thanks!