ZDIGAIT2500 - Digital Yacht AIT2500 Class B+ 5W SOTDMA AIS w/GPS | Aztek Computers
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SKU: MDZS44CNHV |  Mfg. Part: ZDIGAIT2500  | UPC: 081159830830  | 
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ZDIGAIT2500 - Digital Yacht AIT2500 Class B+ 5W SOTDMA AIS w/GPS

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$830.63  $1,121.35
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Product Overview

**As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at time of purchase. A copy of the MMSI Registration or FCC Ship Station License is required along with the vessel master or owner's signature on the completed programming form. **

Click here to download form.

AIT2500 Class B+ 5W SOTDMA AIS with GPS

Digital Yacht have a range of Class B+ AIS transponders. Class B+, a standard, utilizes SOTDMA format transmissions which offer a 5W power output (2.5x more powerful than a regular Class B), a guaranteed time slot for transmission in busy traffic areas and faster update rates depending upon the speed of the vessel. It’s ideal for ocean sailors requiring the best possible performance and future proof satellite tracking applications, fast power boats and smaller non-mandated commercial vessels. It still inter-operates with existing Class B and Class A systems.

The AIT2500 is a full function SOTDMA AIS transponder with NMEA 0183, NMEA 2000 and USB data outputs. It is supplied with a GPS antenna and requires connection to a VHF antenna or suitable VHF-AIS antenna splitter.

The AIT2500 has the option of an AIS SART alarm which is great for use with personal AIS MOB devices.

Specifications:

  • Class B+ 5W transponder with GPS/GLONASS positioning
  • Multiple NMEA 0183 in/out and multiplex capability
  • NMEA 2000 connectivity
  • USB connectivity for PC/MAC
  • Remote TX silence switch option
  • Supplied with GPS antenna
  • Options include VHF-AIS antenna splitter, wireless interface (WLN10SM) and AIS SART Alarm (AIS Lifeguard)

Note On SOTDMA Technology

Class B+ is a generation of AIS functionality based on SOTDMA (self organised TMDA) messaging rather than the simpler CSTDMA (carrier sense TDMA).  It guarantees your AIS transmission will get a time slot, even in areas of very high traffic density.  It also specifies a 5W transmission power (compared with 2W for Class B) and a transmission rate that increases as the vessel moves faster.  With regular Class B protocol, the transmission rate is fixed at every 30 seconds when the vessel is moving. It is ideal for ocean sailors requiring the best possible performance and future proof satellite tracking applications, fast power boats and smaller non-mandated commercial vessels.

Expert Overview

The Digital Yacht AIT2500 Class B+ 5W SOTDMA AIS with GPS is a marine transponder designed for enhanced vessel identification and tracking. This unit utilizes SOTDMA (self-organized TDMA) technology, providing a 5W power output, which is 2.5 times more powerful than standard Class B systems. This technology also ensures a guaranteed transmission time slot in high-traffic areas and offers faster update rates that adjust with vessel speed, unlike the fixed rates of regular Class B. The ZDIGAIT2500 is suitable for ocean sailors needing reliable performance, fast power boats, and smaller non-mandated commercial vessels. It includes NMEA 0183, NMEA 2000, and USB data outputs for integration with existing marine electronics and is supplied with a GPS antenna. A VHF antenna or suitable VHF-AIS antenna splitter is required for operation. This system addresses the need for improved visibility and collision avoidance in various marine environments.

Technical Specifications

**As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at time of purchase. A copy of the MMSI Registration or FCC Ship Station License is required along with the vessel master or owner's signature on the completed programming form. **

Click here to download form.

AIT2500 Class B+ 5W SOTDMA AIS with GPS

Digital Yacht have a range of Class B+ AIS transponders. Class B+, a standard, utilizes SOTDMA format transmissions which offer a 5W power output (2.5x more powerful than a regular Class B), a guaranteed time slot for transmission in busy traffic areas and faster update rates depending upon the speed of the vessel. It’s ideal for ocean sailors requiring the best possible performance and future proof satellite tracking applications, fast power boats and smaller non-mandated commercial vessels. It still inter-operates with existi

Product Details

  • Manufacturer:
  • Model Number:
  • ASIN:
  • UPC:
  • Condition:
  • Weight:
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  • Updated:
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  • Digital Yacht
  • ZDIGAIT2500
  • B0812DL4P4
  • 081159830830
  • New
  • 3.9 lbs
  • 13 X 4 X 9
  • Aug 02, 2026
  • Apr 15, 2021
Product Identifiers: Brand: Digital Yacht • Part #: ZDIGAIT2500 • UPC: 081159830830 • ASIN: B0812DL4P4 • Category: Marine Audio

Frequently Asked Questions

What is SOTDMA technology and how does it benefit the user?

SOTDMA (self-organized TDMA) is a messaging protocol used by Class B+ AIS transponders. It guarantees a transmission time slot, even in high-density traffic, and provides a 5W transmission power, which is 2.5 times greater than regular Class B. This results in more reliable and faster update rates, especially for vessels moving at higher speeds.

What connectivity options does the AIT2500 offer for integration with other systems?

The AIT2500 features multiple NMEA 0183 in/out ports with multiplex capability, NMEA 2000 connectivity, and a USB port. These options allow for versatile integration with various marine navigation and communication systems, including PCs and Macs.

What is included with the AIT2500 transponder upon purchase?

The AIT2500 Class B+ 5W SOTDMA AIS transponder is supplied with a GPS antenna. Users will need to provide a VHF antenna or a suitable VHF-AIS antenna splitter for full functionality.

Is the AIT2500 compatible with existing Class A and Class B AIS systems?

Yes, the AIT2500 Class B+ transponder is designed to inter-operate with existing Class B and Class A AIS systems, ensuring compatibility within a diverse marine traffic environment.

ZDIGAIT2500 - Digital Yacht AIT2500 Class B+ 5W SOTDMA AIS w/GPS

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$830.63