I just recently got my psp-290 setup up and running. As with almost everyone else, I am a little bit disappointed in the number of satellites I can "lock on" to. What I would like to do is some how mount and external antenna on to the top of my car. Has anyone take apart the psp290, or would it even be possible to connect to an external antenna. Any help is appreciated.

http://www.crutchfield.com/S-9FyWfP6...p?i=150GA25MCX