Sirio Antenna Sirio Tornado 50-60 Mhz Omni-Directional 6M Vertical Base Station Antenna Base station antenna, mono-band Low-gain, omnidirectional tunable by whip length adjust made of aluminum alloy 6063 T-832 High quality 6 meter band base antenna Gain: 1.2 dBd - 3.35 dBi Bandwidth @ SWR 2: 3.1 MHz @ 50 MHz SWR@ res. freq.: 1.2 Max. Power (CW) @ 30C: 1000 Watts Connector: UHF-female Materials: Aluminum, Brass, Nylon Wind load / resistance: 146 N @t 150 Km/h / 150 Km/h Wind surface: 0.13 m