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 band Bandwidth: (within 2.0:1 SWR): 5 MHz SWR: 1.5:1 at 156.8 MHz Impedance (Ohms): 50 Gain: 3 dB Max Input (Watts): 50 DC Ground: NO Termination: 15&'; RG-58 cable Height (feet): 5 Polarization: Vertical Radiation pattern: Omni-directional 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)