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Ocean Signal Class B SOTDMA AIS Transceiver


Stay safe – see and be seen with Ocean Signal’s ATB1

Increased visibility to other vessels (SOTDMA). Simple to install and use. FREE user-friendly mobile app for set up. Superior internal 99 channel GPS receiver. WiFi, USB, NMEA 0183 and NMEA 2000®. Supplied with external mount GPS antenna.

The Ocean Signal ATB1 Class B AIS Transceiver incorporating the superior SOTDMA access scheme provides increased visibility and safety at sea.

Designed as an aid to collision-avoidance, it provides a significant advantage in navigational safety giving you the peace of mind that your vessel will be seen day or night, no matter the weather, on today’s busy waterways.

Your vessel information such as position, speed, course and heading is ascertained automatically and continuously using the impressive internal multi-GPS receiver for accurate global positioning. Boasting 99 acquisition channels and 33 tracking channels, this advanced technology ensures that the AIS transmissions provide the most accurate indication of your vessel’s position at all times.

It is quick and simple to install and comes complete with an external GPS antenna, meaning that all you need is the use of a suitable device (mobile phone, tablet or PC) to upload your vessel information, and you can begin transmitting your AIS messages within minutes.

A leader in life-saving maritime products for the professional and leisure markets, Ocean Signal yet again provides the ultimate in safety and peace of mind with the ATB1 Class B Transceiver.


This Antenna Splitter is intended to be used with any Class B or B+ AIS Receiver/Transmitter to enable your existing boat VHF antenna to be used for receiving and transmitting AIS data.

Installation is quick and simple with supplied interconnecting cables to link the AIS Receiver, or Transceiver, and the boat VHF. Reception on the AIS Receiver and the VHF Radio happens simultaneously. AIS reception is blocked when the VHF Radio is transmitting.

  • Simple and quick to install, reducing installation time and cost.
  • FM connection to connect to your stereo radio system.
  • Fail safe operation ensures the VHF radio is connected to the antenna in the event of a power loss.
  • Operation from 12 or 24 VDC with built-in fuse.