<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>Customers and installers love the 500 GOLD Series easy installation connector system. The gold factory-attached mini-UHF female connector with PL-259 (UHF) adapter makes connecting to the AIS transponder easy, eliminating the need to solder connectors.<br><br>All of our antennas are made in the USA, assembled, tested and tuned by hand for maximum performance, quality and durability.<br><br><b>All 4' AIS Antennas Feature:</b><br><ul><li>Powerful brass radiators <br><li>Soldered connections <br><li>Power directing ferrite choke bead <br><li>High gloss urethane finish <br><li>316 stainless steel ferrule <br><li>4.5dB gain </li></ul><br><b>500 GOLD Series</b><br><ul><li>Mount: Standard 114 threaded base <br><li>Connector: Gold factory-attached mini-UHF female with mini-UHF male to UHF male (PL259) adapter <br><li>Cable: Includes 25 of our low-loss, tinned braid, foil shielded, UV stable RG-8X marine cable </li></ul><br><strong>This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.</strong> <!--- cis2:m2lumJ1t --->