The length of the beam: 45cm The length of the element: 35.5cm (the longest one) Weight: 0.2Kg Frequency range: UHF 400-470MHz Gain: 7dBi (430MHz) Max power: 100W Impedance: 50Ω VSWR: less than 1.5 Rated Wind Velocity: 60 m/s Connector: SL16 Female The diameter of mounting mast: Ø30～Ø40 mm ■Works for all kinds of UHF mobile radios and walkie-talkies which rated power under 100W. ■Works better when yagi antenna is installed in an open area such as an apartment balcony or rooftop. ■Most parts of yagi antenna are made of lightweight aluminum alloy, easy to assemble and install. When not in use, only need to fold the elements, which saves space and is easy to carry. ■Antenna works best when the element is perpendicular to the ground. ■This yagi antenna compatible for mobile radios such as Motorola, Kenwood, Yaesu, Icom, Hytera radios.