3' AIS Antenna 236-SW In conjunction with the USCG Automatic Identification System AIS requirements for commercial vessels, Digital Antenna created a slim, low profile AIS antenna that meets the exacting AIS frequency requirements. Designed with a low 1.5 1.0 SWR ratio from 159-162 MHz for use with AIS transceivers, Digital Antenna's low profile AIS antenna features a durable stainless steel whip and completely sealed coil base. The 236-SW antenna offers easy and versatile mounting with the included 15' cable and L bracket or it can be U-bolted, bulkhead or thru-hole mounted. Its compact design makes this antenna compatible for use on any boat. All of our antennas are made in the USA, assembled, tested and tuned by hand for maximum performance, quality and durability. Features Durable stainless steel antenna mast Versatile low profile mounting Wide bandwidth for AIS requirements Quick disconnect antenna mast Completely sealed coil base 3dB gain 200 Series 236-SW Mount Stainless steel L-bracket for side mounting Connector UHF female SO239 Cable Includes 15' of RG-58 cable with attached PL259 connectors