1 - Sirius(R) Universal Outdoor Home Antenna, Compatible with single-input Sirius(R) home tuners & dock & play receivers, Mounts on a mast, roof or wall, SXHA1 Compatible with single-input Sirius(R) home tuners & dock & play receivers Mounts on a mast, roof or wall Durable, UV-coated, weather-resistant construction Adjustable design positions antenna for maximum signal reception