Hi I have a 2011 Nitro Detonator with the 730N RER media center. The am/fm radio works great, dvd and jukebox all good. My phone pairs up fine but when I receive a call I can hear them but they can't hear me. It doesn't hear my voice commands either. The sirius isn't receiving a signal and my navigation doesn't show as seeing any satellite. I'm guessing a problem with the microphone and satellite antenae but I thought the antenae was with the am/fm together. Any suggestions on where I should start to find what the problem is. I think the microphone is supposed to be in the rearview mirror. Is there a way to check that out. I have a sirius subscription. I paid $150 for a cd to upgrade the navigation software. Didn't do a thing. HELP ME PLEASE!!!!!