The Shakespeare SeaWatch series of TV antennas are omni directional over the air digital HDTV solutions that bring sleek lines and 360 high performance coverage to your watercraft or RV Designed to accept common 1 14 threaded mounts the antennas are well suited to fit virtually any application Features . Omnidirectional flat panel antenna with 20 RG 59 cable. Mounts on standard 1 14 antenna mount. Low noise amplifier. Multi directional. Recieves ALL local HD broadcast signals. AC power adapter included Specifications . Size 8 H x 4 Dia . Voltage 12VDC 110 AC. Weight 2 5 lbs