This KJM AIS Marine Antenna builds on the success of the A430-AIS and includes 20' of low-loss RG-8/X cable permanently attached to the antenna and a high-quality solder-type PL-259 connector for a hassle-free, professional installation. The antenna features brass and copper elements for maximum range and efficiency. Specifications• Frequency Range: Marine VHF Band, 156-163 MHz, tuned to AIS frequency• Average Gain: 3 db• Housing: 4' White Fiberglass with Stainless Steel Ferrule• Impedance: 50 ohms• Max Input Power: 50 Watts• Polarization: Vertical• Elements: Copper and Brass• SWR: Nominally 1.5: 1 at 156.8 MHz• Cable Supplied: 20' RG-8/X• Connector: PL-259, solder type, not installed• DC Ground: Grounded: The antenna will read shorted on continuity test Features Commercial-Grade Fiberglass Construction, Brass & Copper Elements, High-Gloss, Polyurethane Finish, Stainless Steel Ferrule With 1""-14 Thread Includes 20' RG-8/X Cable PL-259 Connector | Camping World KJM AIS Marine Antenna in White