Technical details (from Elk Antennas) - 2M Gain 6.6 dbd (8.7 dBi) - 440 Gain 7 dBd (9 dBi) - 20 +dB Front to Back Ratio - 24 Inch Boom Length - 1:1 SWR 144-148 Mhz, 430-450 Mhz - 200W Max Power 2M, 100W 440 - Weighs 1.5 lbs. - Corrosion resistant aluminum alloy boom - Anodized aluminum elements - Stainless steel hardware - Designed for long life - Super fast and easy assembly/disassembly (three minutes). - Color-coded elements screw onto studs on the color-coded boom- just match the colors! - Two bands with one coax fitting (N-Type). Use your dual band HT for satellite contacts. - No duplexer required, no duplexer loss,no duplexer power limit, no duplexer cost! - Use all portions of the band without retuning. - Change polarity easily, just twist the mounting assembly to change from vertical to horizontal polarity. - Designed with the latest synthesis software to achieve highest gain and highest front to back ratio for its size. - Now with "soft touch" handle for handheld satellite applications - Supplied with a specially designed carrying bag for the antenna.