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 1-14 thread; Includes 15' RG-58 cable and a PL-259 connector; Suggested mount: Style 4187 Ratchet Mount; One section; Technical 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 - cis2:mm5mnJlm -Specifications: Antenna Band: VHF; Color: White; Construction: Fiberglass; Ferrule Type: Chrome Plated; Length (Inches): 60"; Box Dimensions: 3"H x 3"W x 63"L WT: 2.9 lbs; UPC: 719441100018; Quick Guide (pdf)