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Class A & B AIS Transponders

An Automatic Identification System (AIS) transponder, also known as a transceiver, is a location and vessel information reporting system that makes use of Very High Frequency (VHF) digital transmissions. It is installed on boats and vessels to regularly share their location, position, course, and speed to other similarly equipped vessels. The data can also be used to avoid collisions and track other vessels.

Looking for transponders? At Tecomart, we provide many different types of Class A and B transponders from a range of brands, including em-trak, Samyung ENC, and Raymarine.

Choosing An Appropriate AIS Transponder

When choosing an appropriate AIS transponder for your vessel, it is important to consider the features that will best meet your specific needs.

Type of Transponder

Class A AIS transponders transmit at a higher VHF signal power and more frequently, allowing them to be received by more distant vessels. They are usually installed on large vessels, such as cargo ships and large passenger vessels due to regulatory requirements.

Meanwhile, Class B transponders transmit at a lower power and at a lower reporting rate than class A transponders. They are also typically lower in costs.


It is recommended to get AIS transponders that include at least a GPS antenna to help provide location and navigation capabilities. Some AIS transponders such as Emtrak’s B923 transponder also include an antenna splitter, allowing it to share an antenna with the VHF radio.

Compatibility with other equipment

Certain AIS transponders have special features that only work with other equipment from the same brand. For example, tracking features that allow ships to save AIS targets of interest with a special icon and name.

Shop AIS Transponders at Tecomart Today

As a leading provider of wholesale marine communication and marine navigation equipment, Teccomart is the place to shop for all your AIS transponders at wholesale prices. Other than transreceivers, we also carry a wide range of other equipment such as antenna rotator systems and Handheld Analog / Digital Mobile Radios. Feel free to contact us for more information or request for a quote to get started.

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