My XM radio has quit working on my GPS. I'm not sure if the problem is with my antennae or the GPS unit itself. I was hoping there might be someone in the Madison area with an XM antennae that would be willing to meet up with me somewhere. Basically I'm just looking to hook another antennae up to my GPS or my antennae to another GPS so I can pinpoint where the problem is. Any afternoon after 5 pm is good for me. Thanks for the help.