b AIS Antennas b br 4 Length 4 5dB Gain br br 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 Antennas 4 5 dB gain AIS antennas offer unsurpassed durability and performance compatible with all AIS transponders br br All of our antennas are made in the USA assembled tested and tuned by hand for maximum performance quality and durability
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