Ideal for professional truck drivers, the Tram 7754 Satellite Radio Trucker Mirror-Mount Antenna provides high-performance satellite radio service on the road. For versatile listening, the antenna is compatible with both XM and Sirius satellite radio service. It mounts easily to your truck mirror to extend radio range for clear, uninterrupted service and to help you avoid satellite dead zones. The 7754 antenna is 11" tall and features a sturdy, 3-way stainless steel mirror mount and bolts for secure installation. It comes with a premium 21' super-thick RG58/U coaxial cable that is replaceable for user convenience.