Digital Antenna 578-SW 4 AIS Antenna [578-SW ] Marine Hardware | Deck Plates Backed by nearly 40 years

Backed by nearly 40 years of trim tab

These and other innovations make it one of the brightest and most efficient LED light bars on the market

Gold plated

Use an upper support bracket (sold seperately) if the lengt of antenna and mast total more than eight feet

Digital Antenna 578-SW 4 AIS Antenna [578-SW ] Marine Hardware | Deck Plates Backed by nearly 40 yearsAIS Antennas 4' Length, 4. 5dB Gain 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. Customers and installers