Digital 578SW 4' AIS Antenna

In line with the USCG Automatic Identification System (AIS) requirements for commercial vessels, Digital Antenna has developed a 4' AIS antenna series that precisely meets AIS frequency needs. With a low 1.5:1.0 SWR ratio from 159 - 162 MHz and a 4.5 dB gain, these antennas offer unmatched durability and performance, working well with all AIS transponders. The 500 GOLD Series features an easy - to - install connector system. The gold factory - attached mini - UHF female connector with a PL - 259 (UHF) adapter simplifies the connection to the AIS transponder, eliminating soldering. All Digital antennas are made in the USA, hand - assembled, tested, and tuned for top - notch performance, quality, and durability. Key features include powerful brass radiators, soldered connections, a power - directing ferrite choke bead, a high - gloss urethane finish, a 316 stainless steel ferrule, and a 4.5dB gain. The 578 - SW belongs to the 500 GOLD Series. It has a standard 1'-14 threaded base, a gold factory - attached mini - UHF female connector with a mini - UHF male to UHF male (PL259) adapter, and comes with 25' of low - loss, tinned braid, foil - shielded, UV - stable RG - 8X marine cable.

Using this AIS antenna is easy. First, find a suitable place on your vessel to mount it using the standard 1'-14 threaded base. Then, connect the antenna to your AIS transponder with the provided gold factory - attached mini - UHF female connector and the PL - 259 (UHF) adapter. There's no need to solder. When it comes to maintenance, keep the antenna clean. Check the cable regularly for any signs of wear or damage, especially the tinned braid and foil shield. Since it has a high - gloss urethane finish, it can withstand some wear, but avoid harsh chemicals. Also, make sure the 316 stainless steel ferrule stays tight. And remember, this antenna is made in the USA with great care, so treat it well for long - lasting performance.