For the toughest of the tough jobs, the GalaxyA(R) VHF Marine Band 6dB Antenna is a maximum range antenna built in a Shakespeare extra tough fiberglass radome. It&';s designed to withstand the wind forces and high speeds when used, and adds extended performance for extra reliable communications when your out on the water. Maximum Power Input: 100 watts SWR Nominally: 1.5:1 at 156.8 MHz Bandwidth: 3 MHz within 2.0:1 VSWR Frequency: VHF Marine Band Antenna Gain: 6dB Ferrule: Stainless Steel with a standard 1"-14 Thread Coax Supplied: 20 ft of RG-8/X low-loss cable Connector Supplied: PL-259 (Not installed) Polarity: Vertical Impedance: 50 Ohms No DC Ground. The antenna will read Shorted on continuity test Suggested mount: 4187 or 5187 (Not Included) Brass and copper elements for maximum range and efficiency Black finish One Section