3dBd gain ; Antenna can be removed or replaced from mount without having to remove the cable from the boat after being installed ; Heavy-duty fiberglass construction ; Covers all marine band frequencies ; Complete with nylon ratchet mount for easy lay-down ; Coaxial cable is built in to ratchet mount ; 20ft RG58/U low-loss premium coaxial cable; Easy screw-off PL-259 connector for small hole installation;