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Em-trak Class B AIS Transceiver B350

Em-trak Class B AIS transceiver : B350

The B350 Em-trak Class B AIS transceiver is a weather & waterproof AIS with an integrated GPS antenna and increased range and reporting frequency with its high power 5W transmitter.   

The em-trak B350 Class B AIS transceiver has been certified to IP67 standards meaning it is suitable for mounting externally.  The built in GPS antenna is handy as it reduces install time and does not require the installation of another GPS antenna.  The Em-trak B350 does still include the ability to add an external GPS antenna if desired or required. 

It's 5W transmit power provides increased range and reporting frequency, ideal for offshore sailors or those sailing in busy transmit areas.  Standard Class B AIS transceivers only transmit at 2W meaning less range.  These units also transmit using the SOTDMA method, like Class A commercial units, this means a faster update frequency than class B units and ensures you are always seen! The unit is even compatible with satellite AIS systems.

The B350 Em-trak AIS transceiver includes both NMEA0183 and NMEA2000 interfaces so it is ready and able to be connected to all chartplotters.  The B350 includes stealth (silent) mode functionality also, allowing it to continually receive AIS messages, but not transmit.  We have a dash mounted AIS silent mode switch available as an accessory item.

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Product Overview

•  Weather & Waterproof to IP67 standards •  Designed for the harsh marine environment
•  Increased range and reporting frequency •  5W transmit power (instead of standard 2W)
•  Stealth mode (silent) ready •  Ready for connection to your chartplotter via NMEA0183 or NMEA2000
• Optional externally mounted 50ch GPS antenna  • Internal GPS antenna

Don't have an MMSI yet?  Download the application form here, its free to apply.

Looking for more information, or ready to buy? Contact us.


Not sure if your charplotter is compatible? Contact us to discuss your options.
For support and other associated downloads for the B350 please visit our FAQ


All em-trak products come with a comprehensive 3 year warranty. If you are having problems with your em-trak AIS hardware please visit our FAQ  first and then if you still require assistance, contact us for assistance.