SUPERGAIN NOMAD 12V TV Antenna. Supergain Nomade is a 24.5 dB omnidirectional TV DVBT / TNT and HDTV aerial. Compact and lightweight, The Nomade's aerodynamic design and built-in low-noise amplifier make it an ideal choice for TV's on caravans, Motorhomes and boats. An integrated adjustable mount makes installation very easy on flat or inclined surfaces. Dimensions: H 80mm diam 245mm. weight 200g.