Class B AIS Transponders
Class B AIS Transponders are mainly used by recreational vessels and smaller commercial vessels.
Information transmitted by Class B transponders can be "seen" by all AIS receiving equipment. Class B transponders also receive all Class A and Class B AIS transmissions.
All of our Class B transponders are built to high quality, commercial standards and mainly differ in the options available for connecting to other devices.
There are two types of Class B AIS Transponders:
Class B CSTDMA 2-watt: These transponders are the traditional Class B units, have a transmit range of 5-7 miles and use the carrier sense system for getting a transmission slot.
Class B SOTDMA 5-watt: This is a new type of Class B transponder. These units transmit with 5 watts of power and typical transmit 10-15 miles. These use the same self-organized slot management system as the commercial Class A transponders.
For more information on the different classes of AIS transponders, visit the US Coast Guard page here.
Also be sure to check out our AIS Transponder Comparison Guide.
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