Taurus D1000 Scanner/Ham/General Coverage Discone Antenna, 25-1300 MHz Wide-band receive: 25 to 1300mhz, specific transmit freq 144,220,440,900,1290 MHz 55" vertical element frequency extender for low band operation Rust free all stainless steel structure, SWR 1.5:1 max Max power: 200 watts , 1-3/8"(35m/m) maximum mast diameter Connector: so-239 fits standard PL-259