Installed our 700bt about 3 weeks ago and love it. That being said, I can't get any AM station unless I'm very close to the transmission tower... used to be able to pull in the Tampa 620 feed from upto 50 to 60 miles away... now it's very faint even within 20 miles of the transmission tower. FM works great.

I have the same problem. I had an F700BT. The AM reception was fine. I returned in to Pioneer because of problems with the IPOD connection. They sent me a different unit and there was almost zero AM reception. I returned it again and was upgraded to a X710BT. I still have no AM reception. WTF?