"Mewilsie", I ended up putting my stock XM antenna outside on the window sill this weekend. Coincidentally, I started getting even worse reception the last few days; I guess some people have been complaining about this, ever since the programming merge. Anyhow the manual says the antenna is OK for outdoor use, so I just used some of that foam double-sided tape and put it on the sill. The cable is thin enough that I can still close the window no problem, but if yours won't close tight enough you could buy some foam gasket at Lowe's or HomeDepot etc. It might be worth a shot to double check your manual, and see if your can be used outside.