Digital Yacht AIT2500 Class B+ 5W AIS Transponder w/GPS

The Digital Yacht AIT2500 Class B+ 5W AIS Transponder with GPS runs SOTDMA transmission, delivering 5 watts of output, 2.5 times more powerful than a standard Class B unit, along with a guaranteed transmission time slot even in busy shipping lanes and faster update rates that scale with vessel speed.

This makes it a strong fit for ocean sailors who want the best realistic performance and future-proof satellite tracking compatibility, along with fast powerboats and smaller commercial vessels that don't fall under mandatory Class A requirements. It still interoperates fully with existing Class A and Class B systems already out there, so a boat running this transponder is never isolated from the broader AIS network. Data outputs cover NMEA 0183, NMEA 2000, and USB, and the unit ships with a GPS antenna, though it still needs connection to a VHF antenna or a compatible VHF-AIS splitter.

Important: Federal rules mandate that every unit sold domestically gets set up by a certified technician rather than the end user. Buyers need to have their MMSI registration or FCC Ship Station License on hand, plus a signed programming form from the boat's owner or captain, before the unit can be activated.

A separate VHF antenna or VHF-AIS splitter is needed to complete the install. As noted above, US buyers must have this unit set up by a certified technician before use.

Have a look at the rest of our AIS equipment.

• 5W SOTDMA transmission, 2.5x the power of standard Class B
• Guaranteed transmission time slot in busy traffic
• Full interoperability with Class A and Class B systems
• NMEA 0183, NMEA 2000, and USB data outputs
• Includes GPS antenna