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AIS transponders allow you to receive data from vessels close to you, but also to transmit your vessel’s identity, position, speed and heading as well as other relevant information to all other vessels equipped with an AIS system within your range. There are 3 types of AIS transponders: Class A, Class B and Class B+. They all interoperate.
Class A AIS are mandated for vessels over 300 tons, fishing vessels over 15m, passenger carrying vessels and for SOLAS Convention.
AIS Class B are for recreational craft installation and have a transmission power of 2W (range of about 10 miles).
AIS Class B+ (also called Class B SOTDMA) use the same SOTDMA technology as a AIS Class A transponders and therefore have the same priority when it comes to reserving a slot, thus ensuring that they will always be able to transmit, even in high traffic areas. They have a transmission power of 5W.
Showing all 9 resultsSorted by price: low to high
AIT2000 – Class B AIS Transponder with external GPS antenna
Original price was: £714.00.£571.20Current price is: £571.20.“Ultra-compact AIS Transponder Class B that uses the latest AIS transponder technology to squeeze more performance and interfacing options with half the size of our previous generation transponder.“
iAISTX Plus & GV30 Bundle (Combo VHF/GPS Antenna)
Original price was: £834.00.£599.95Current price is: £599.95.“This iAISTX Plus & GV30 bundle is ideal for all type of boat with NMEA 2000 MFDs, providing a single combination VHF+GPS antenna solution that makes installation easy and simple.”
iAISTX – AIS Transponder with Wi-Fi
£624.00“iAISTX is an AIS transponder with Wi-Fi interface designed specifically for the growing number of boaters who use a tablet for their navigation tasks.”
iAISTX Plus – AIS Transponder with Wi-Fi & NMEA 2000
£714.00“iAISTX Plus is an AIS transponder with Wi-Fi interface for tablet & PC navigation and also has a NMEA 2000 interface (with integral drop cable) to integrate with modern plotters, instruments and multi-function displays to provide AIS functionality.”
Nomad 2 – Portable AIS Transponder
Original price was: £834.00.£771.55Current price is: £771.55.“Nomad 2 is a portable AIS navigation solution from Digital Yacht. It is a class B AIS transponder with a wireless and USB interface built in for tablets and PCs. It ships with a compact combination VHF and GPS antenna.“
AIT2500 – Class B+ 5W AIS Transponder
£834.00“The AIT2500 is a full function Class B+ SOTDMA AIS transponder with NMEA 0183, NMEA 2000 and USB data outputs. It is supplied with a GPS antenna.”
AIB1000 – Self-contained AIS Transponder
£900.00“AIB1000 is a ruggedized, fully self-contained AIS Class B vessel tracking transponder – ideal for small vessel tracking and monitoring”.
AIT5000 – Class B+ AIS Transponder with Wi-Fi, NMEA & VHF Splitter
£1,194.00“The AIT5000 is a Class B+ AIS Transponder with a 5W power output, a Wi-Fi interface, a built-in VHF splitter and utilises SOTDMA format transmissions.”
CLA2000 – Class A AIS Transponder
£2,394.00“CLA2000 is the ultimate SOLAS and inland waterway globally approved Class A AIS transponder with a full integrated 5” hi-res colour display. “
Here is a table to help you choose between our current models:
| Features | iAISTX & iAISTX Plus | AIT2500 | AIT5000 | Nomad2 | AIB1000 | CLA2000 |
| Type of AIS & Transmit Power | 5W Class B+ | 5W Class B+ | 5W Class B+ | 2W Class B | 2W Class B | 12.5W Class A |
| Transmit Rate | Up to every 5 secs | Up to every 5 secs | Up to every 5 secs | Every 30secs | Every 30secs | Up to every 2secs |
| Guaranteed Time Slot Allocation | Yes | Yes | Yes | No | No | Yes |
| Voyage Data | No | No | No | No | No | Yes |
| Power Supply | 12/24V | 12/24V | 12/24V | USB | Internal Battery or 12/24V | 12/24V |
| External or Built-in GPS | External GPS | External GPS | External GPS | External GPS | Built-in GPS | External GPS |
| Built-in VHF Splitter | No | No | Yes | No | No | No |
| NMEA 2000 | Yes for Plus Version | Yes | Yes | No | No | Yes |
| NMEA 0183 | No | Yes | Yes | No | No | Yes |
| Wi-Fi | Yes | No | Yes | Yes | No | Yes |