Satellite Radio - XM, Sirius?
Well, the answer to your question is dependent upon two things. First of which is as mentioned programing. Second is a bit more complicated. As a commercial shipping engineer, we use the XM brand radio and believe it or not with some re-adjusting and trial and error (using satellite position plots) you can find the location of the satalite and with some continual adjustment have reception almost to the english channel (10 west to be exact), although you do loose the Fm buffer signal of course just a few miles off shore. This will never be published due to fcc licienses etc... So in short you have a tremendous range with Xm on the east coast, not sure about the west coast. Hope this helps your search for tunes offshore.