[Directional YAGI antenna]Frequency: UHF 400-470MHz; Maximum Power Input-watts: 100W; Gain:9dBi(430MHz); Connector: SL16/UHF Female; Impedance: 50Ω; VSWR: less than 1.5; Bandwidth:20MHz; Front To Back Ratio: >15 dB 5 Elements; Weight:0.4Kg; Size:725mm*280mm; Rated wind velocity 60 m/s; Mounting hardware:Ø30～Ø40 mm; Polarization: Horizontal 3dB Beam Width: 58° ; Vertical 3dB Beam Width: 40° [Simple construction,Easy Tuning and Assembly]The surface is made of aluminum alloy,Antioxidant,make the antenna bright and clean,sturdy and durable,good environmental adaptability.Lightweight,High strength,Waterproof,Corrosion resistant. The body of the Yagi Antenna makes it highly resilient to outdoor use. Strong wind resistance,Rated wind velocity 60 m/s.Securely attached to the mounting surface with the U-Bracket. High gain benefit,great front to back ratio;Strong directionality. Yagi Antenna greatly increase the signal strength of your radio,strong anti-jamming,provides stable signal,hit your repeater easily,get long distance communication. Yagi Antenna Widely used in various directional divice:For Baofeng Motorola Yaesu Kenwood amateur 2 Way Radio;GMRS Repeater Systems;police scanner;433mhz radio system;data radio;satellite work,ISS (international Space Station)contact;Digital Radio. Electrical Specifications Frequency range: UHF 400-470MHz Gain: 9dBi (430MHz) Maximum Power Input-watts: 100 W Impedance: 50Ω VSWR: less than 1.5 Connector: SL16 Female(UHF Female) Bandwidth:20MHz Polarization: Horizontal 3dB Beam Width: 58° Vertical 3dB Beam Width: 40° Front To Back Ratio: >15 dB Mechanical Specifications Material: Aluminium alloy Size:725mm(L)*280mm(W)*10mm(H) Weight: 0.4Kg Mounting hardware:Ø30～Ø40 mm Rated Wind Velocity:60 m/s Features: High gain Strong directionality Strong anti-jamming Realize long distance communication Simple construction and easy assembly and disassembly Packing inlcudes: 1x UHF 400-470MHz Yagi