I was having issues with the XM cuttin in and out and the reception bar going from 1 to 3 to 0 to 3 etc
Took the bike into the dealer for this issue as I had heard there were a few issues with the 09 radios.
They took the bike for a ride and verified what I was telling them. They then called Tech Services and they were told the new pretty Chrome window strip on our 09 Ultra's is getting in the way of the signal.

I asked them if we can move the XM antenna down on top of the XM box on top of the radio as that is not in the way and we did (remember to remove the magnets from the bottom of the antenna and leave them on the original mount)
Have about a 100 miles since the simple fix and no more issues.
If you remove the chrome strip the problem also goes away. Would have thought the MoCo would have field tested something like this.
Side note: paid the 4 dollars a month to get the reprogramming on the bike to now pick up the Sirius Football and Nascar Channels they internally programmed at XM

so my channels 118,119,120 - 124 are now the games.