In conjunction with the USCG Automatic Identification System (AIS) requirements for commercial vessels, Digital Antenna created a series of 4? AIS antennas that meet the exacting AIS frequency requirements. Designed with a low 1.5:1.0 SWR ratio from 159-162 MHz, Digital Antenna?s 4.5 dB gain AIS antennas offer unsurpassed durability and performance compatible with all AIS transponders. Color White

• Powerful brass radiators


• Soldered connections


• Power directing ferrite choke bead


• High gloss urethane finish


• 316 stainless steel ferrule


• 4.5dB gain


• Mount: Stainless steel double female ferrule for mounting 1"?14 threaded base


• Connector: Quality female SO-239 (UHF female)


• Cable: Not included ? use our VHF/AIS cables and two DA645 connectors