Style 396-1 VHF 3dBCenter-fed 1/2-wave coaxial sleeveOutstanding, basic 3dB antenna designed to reduce signal fading in rough seas. This is probably the most widely used antenna on Coast Guard vessels.Brass and copper elements Chrome-plated brass ferrule with standard 1&qout;-14 thread Includes 15' RG-58 cable and a PL-259 connector Suggested mount: Style 4187 Ratchet Mount One sectionTechnical Specifications:Frequency:VHF Marine bandBandwidth:(within 2.0:1 SWR): 5 MHzSWR:1.5:1 at 156.8 MHzImpedance(Ohms): 50Gain:3 dBMax Input (Watts):50DC Ground:NOTermination:15' RG-58 cableHeight (feet):5Polarization:VerticalRadiation pattern:Omni-directional