[grizzy]

I use XM radio in both our truck and in the Airstream. I got two "Car Kits", mounted on in the truck and simply put the antenna at the very front of the dash, where the dash meets the windshield. You might have to move it around to find the spot with the best reception, but once you find it there is no need to mount it outside the vehicle. The airstream is another story. I've been unable to get reliable reception with the antenna inside the trailer. I just ran it under the front window screen and out the window. When I'm driving I attach the magnetic base to the frame of the trailer. When we stop, I raise the front window protector and set the antenna on top of the now horizontal protector. It works great.