Product Frequency Range:156-163 MHz Impedance:50Ohm; VSWR:less than 1.8 Gain :2 dBi(neglect the cable length); Polarization:Vertical Radiation:Omni; Lighting Protection:Direct Ground Maximum Power Input-watts:50 W; ;MECHANICAL SPECIFICATIONS Antenna length:1645 mm Antenna termination:PL259 Cable Length/Type: 5m/RG-58 VHF Marine antenna,made of high quality rubber with stainless steel bracket for an easy installation on mast top or other suitable mounting point. 5m RG-58 cable with PL259 connector make you more convenient for use. Waterproof and , for the marine environment. Suitable for ALL MARINE APPLICATIONS: Boat, Yacht, Sailboat, RV, , Trailer, , Go Kart and more. Color: As Shown Material: Stainless steel+plastic Package Contents: 1 x VHF Marine Antenna Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.