AV100/2BI 2-Piece VHF Antenna - 23' (cable sold separately)**This item must ship via truck freight**BI Series Antennas have a BNC connector at the base and cable is center-fed.The AV100 series antenna is a high gain antenna designed for the maritime VHF radio telephone service. It is a high quality antenna with a durable construction and a beautiful finish for installation on all kinds of vessels.Specifications: Design:Phased 1/2 ? elements in a collinear array with a coaxial choking sleeve to suppress cable radiation.Radiating elements completely enclosed in polyurethane foam within a fiberglass tube Height: 23' (7m) Weight: 5 kg Wind rating: 55m/s = 125mph Finish: Polyurethane lacquer, white Power rating: 100W Gain: 10dB Polarization: Vertical DC-grounded: Yes Nominal impedance: 50 ohm Includes AV-CV2 adapter to allow for side cable feed