![Digital Antenna 578-SW 4 AIS Antenna [578-SW ] Boat Navigation Tools Multi-zone control lets you tune](https://cdn.shopify.com/s/files/1/0350/0497/3196/files/16968XL.jpg?v=1682636225)
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Multi-zone control lets you tune four audio zones
Note: Not for Freedom HF or Freedom SW Series
# 01-0343-01
Base Material is PBT UL94 V0
DC Positions: Main +15
Digital Antenna 578-SW 4 AIS Antenna [578-SW ] Boat Navigation Tools Multi-zone control lets you tuneAIS 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