I got this goddamn thing for Christmas, and it's supposed to be "portable", I.E. like a walkman. It doesnt work ANYWHERE. It barely keeps the signal in my house, where the antenna is right in the goddamn window. If I take it outdoors or anywhere where there's those pesky "walls" involved, it gets no reception or signal whatsoever. Anyone else have this problem? Am I doing something wrong, or is this just another shit fucking overpriced item relying on awful satellite technology which is anything but reliable anywhere? I tried using the "antenna aiming" thingie in the preferences menu, and I called XM service for help and they refreshed my antenna or something, but it still doesnt work worth a shit. Help.