4' (1.2m) AIS/VHF 3dB Gain. Specially engineered for the extra bandwidth required by AIS transceivers, this Phase III(TM) antenna enables reliable communication over marine VHF frequencies. The ethafoam spacer system and silver-plated elements enhance the antenna's technical performance and longevity to meet your needs.

Silver-plated outer conductor, copper inner conductor.

Stainless steel mounting sleeve.

SO-239 connector inside mounting sleeve for easy mounting and dismounting for stowage.

Suggested mount: Shakespeare(R) Style 4187-HD Ratchet Mount