A052T 5W SOTDMA Class B+ WiFi & NMEA 0183/2000 AIS Transponder
$739.99
Enhance your safety and visibility with our Class B+ AIS transceiver—ideal for recreational boats, yachts, and fishing vessels. Featuring next-generation AIS technology for reliable collision avoidance and vessel tracking.
- Receives and processes all AIS message types
- Automatically transmits position, speed, and heading to other vessels
- Monitors position, speed, and heading of AIS-equipped vessels
- Combines NMEA0183 input data and outputs it via NMEA0183, WiFi, USB and NMEA2000
- Silent mode for power saving, privacy, or security
- Supports WiFi connections for up to four devices
- Connects to NMEA2000 networks for AIS and GNSS position data sharing
- Programmable Transmission power for enhanced safety
- Supports web-based configuration via WiFi
- Water resistance rated to IP67
In stock (can be backordered)
- Description
- Downloads
- Technical Info
- What's in the box?
- MMSI Notice
- Installation and Connectivity
- Pre-configuration service
- Product Videos
- FAQ
Description
The A052T Class B+ AIS Transponder is the perfect solution for broadcasting your vessel’s details — including location, name, dimensions, speed, and more.
Compact and reliable, the A052T not only meets your local Class B+ AIS compliance requirements, but also offers enhanced safety and project tracking capabilities.
In addition to transmitting your AIS data to nearby vessels and shore stations, the A052T also receives and decodes incoming AIS messages — just like our dedicated AIS receivers. It integrates GPS data with AIS signals, allowing you to accurately track your own position and see other vessels in your vicinity in real-time.
Display your AIS and GPS data on:
-
Chart plotters via NMEA 0183 or NMEA 2000 connections
-
Laptops, computers, or tablets via USB OTG (compatible with Android and Linux)
-
Up to four WiFi-enabled devices simultaneously
Whether for safety, compliance, or enhanced situational awareness, the A052T is the all-in-one AIS transponder you can rely on.
Features
| Feature | Description |
|---|---|
| Vessel data transmission | Sends vessel position, speed, heading, and other data to nearby vessels and AIS receiving stations within VHF range |
| AIS & GPS reception | Receives and processes all AIS message types and GPS data |
| Monitoring other vessels | Monitors position, speed, and heading of AIS-equipped vessels within VHF range |
| Real-time vessel tracking | Displays movement, course, speed, and heading changes of nearby AIS vessels on PC, chart plotter, or wireless device |
| Collision-avoidance solution | Provides a cost-effective system for maritime monitoring and safety |
| Compliance | Fully compliant with European RF & TTE directive requirements |
| LED status indicators | LEDs confirm successful AIS message transmission and reception |
| WiFi configuration | Supports web-based configuration via WiFi |
Find out whether you need a Class A or Class B+ transceiver here.
Perfect for use in all Class B+ boats (under 300 tonnes etc.): sailing boats or yachts, small fishing boats, etc..
Available to add to your order
VHF?AIS Antenna:
GPS Antenna:
VHF/AIS Antenna Splitter:
| Document Type | Link |
|---|---|
| Set Up Guide |  |
| User Manual | |
| Firmware |  |
| Configuration Tool | |
Technical Specification
| Feature | Description |
|---|---|
| Standard | IEC 62287,ITU-RM.1371,IEC 60945,IEC 61162 |
| NMEA Output | NMEA 0183 RS422 -38400 bps |
| Sensitivity | -110 dBm |
| Power (TX) | 5 W |
| Channel A | CH87B(161.975MHz) |
| Channel B | CH88B(162.025MHz) |
| Transmit Mode | SOTDMA |
| Bandwidth | 25 kHz |
| Bit Rate | 9600 bps |
| Power Consumption | < 4 W |
Environmental Factors
| Condition | Description |
|---|---|
| Working Temperature | -15℃~55℃ |
| Storage Temperature | -25℃ to 70℃ |
| Humidity | 0–95% RH at 40℃ |
| Water Resistance | IP67 |
Additional Specification
| Feature | Description |
|---|---|
| AIS Transmission Rate | 5 Watts, SOTDMA protocol; programmable to 1, 2, or 5 Watts (default 5W) |
| AIS Receiving Range | 40 nm |
| VHF Connector Port | Standard SO239/UHF female connector; connects to external VHF/AIS antenna (requires PL-259/UHF male plug) |
| GPS Connector | TNC female bulkhead connector for external GPS antenna; built-in GPS module included (only antenna connection required) |
| Power Connector | 12-pin POWER/NMEA connector |
| Power Supply Range | 12V – 35V |
| NMEA 0183 Output | For chart plotters and other NMEA 0183-compatible equipment |
| USB | USB Type-C for PC/laptop connection for configuration and data viewing (full configuration via Windows PC; vessel info configurable via Wi-Fi) |
| WiFi Output | Transmits NMEA 0183 sentences over Wi-Fi; supports Ad-hoc and Station modes (with or without router); no config required for Ad-hoc |
| NMEA 2000 Output | Connects to NMEA 2000 networks for AIS and position-data sharing |
| LED Indicators | LEDs confirm AIS message TX/RX, GPS, Wi-Fi, and power status |
What’s included?
- 1 x A052T AIS Transponder (class B+)
- 1 x 12 pin POWER/NMEA cable
- 1 x USB Type C cable
IMPORTANT: Class B+ Transponder
AIS transponders themselves don’t need to be registered, however, each requires a unique and official 9-digit Maritime Mobile Service Identity (MMSI) number assigned to the vessel and its owner.
To obtain an MMSI number, you should contact the relevant authority in your country. Different countries have different authorities responsible for this service. If you are not sure, search ‘how to apply for an MMSI in (country name)’
Please Note: The A052T Transceiver will allow you input an MMSI number only once.
Please make sure you input the correct MMSI number before clicking ‘config’, as changes are not permitted after confirming.
Installation and Connectivity
Step 1 – Decide where to mount your transponder
A key advantage of this Class B+ Transceiver is that we’ve encased it in aluminium – to minimize interference from other equipment. This opens up many more places you can install the A052T, compared to most other transponders.
Step 2 – Choose your power source
The A052T Class B+ Transponder can be powered by a power supply ranging from 12v to 24v. This covers most power sources used on boats, and is a distinct advantage over transponders that are powered only by a 12v power supply.
Step 3 – What do you want to see?
The Class B+ Transponder will of course broadcast your location – but in addition it also receives AIS signals from other ships in your area and receives your GPS location.
Your A052T transponder has input ports where you simply connect your aerials.
You will need to install two aerials:
- A VHF antenna – to collect and transmit the AIS data
- (If you want to use the same VHF aerial as your radio communication, simply use a splitter before connection.)
- A GPS antenna – used to pinpoint your accurate location
Step 4 – Transmitting your location (ON/OFF)
As this is a Class B+ transponder, you can decide when (or if) you want to transmit your location, using STANDBY mode in the Configuration software.
Step 5 – Choosing your Transmitting power
By default, the A052T is set to 5 Watts for the AIS Transmission power, however this can be changed down to either 1 or 2 Watts. This can help improve safety at sea. The higher the Watts, the further the signals transmit.
Step 6 – Which displays will you connect your A052T to?
- NMEA 0183 Chart plotter via NMEA 0183 output
- Windows or Linux laptop (using the USB input or WiFi)
- Up to 4 wireless devices (phones, tablets or laptops) in Ad-hoc mode WiFi
- Wireless devices through your Access point/router in Station mode WiFi
- NMEA 2000 chart plotter through NMEA 2000 backbone
This Transponder works in both WiFi modes, Ad-hoc and Station modes:
THE REQUIRED INFORMATION MUST BE ENTERED INTO THE RELVENT SECTION WITHIN THE CHECKOUT PAGE.
If you order the Pre-configuration service we will pre-configure your transponder with your MMSI number, ship type and any other required information (Particularly useful for customers who do not have access to a Windows system).
NOTE: Some of this information is required by law for CLASS B+ transponders. The customer is responsible to check what other fields are required in their location.
ALL FIELDS WITHIN THE SERVICE SECTION IN THE CHECKOUT PAGE ARE REQUIRED (failure to do so will result in delays n shipping the order)
The following data can be pre-configured.
MMSI – The Maritime Mobile Service Identity number is your unique 9 digit number that is assigned to a DSC (Digital Selective Calling) radio or a transponder unit. It is essential that the MMSI entered is a valid number issued by the national authority and corresponds to the MMSI assigned to your vessel. And it will only be allowed to input ONCE! If a change to the MMSI number is attempted, the A053T will operate only as an AIS receiver until the verification code provided by the Quark-elec compliance verification system has been entered on the device’s configuration webpage. Internet connectivity via WiFi is required to receive and input the verification code.
Ship type – This field should contain a number referring to the type of vessel you are using this transponder on. For example ‘36’ for vessels using sail propulsion. And ‘37’ for pleasure craft (Yacht powered by engine).
GPS (A, B, C, D)
A: Distance from bow to GPS antenna in metres
B: Distance from stern to GPS antenna in metres
C: Distance from port to GPS antenna in metres
D: Distance from Starboard to GPS antenna in metres
(The transponder must know where your GPS antenna is located to make accurate readings.
Be as accurate as possible when writing this information as it will impact on the accuracy of your GPS data.)
CALL SIGN – Your vessel’s call sign if relevant.
Draught – The vertical distance between the waterline and the bottom of the hull (keel), with the thickness of the hull included. Draft determines the minimum depth of water a ship or boat can safely navigate.
Name – Name of your vessel.
Message us your required information, either on the order page or via email to info@quark-elec.com.
For your security, ensure you email us from the same email address as you entered in your order.
Unboxing
How to Configure
Who will be able to see my transmitted AIS signals?
Nearby ships will be able to view your details using their AIS receiver, even in bad weather and poor visibility.
Around the world, AIS data from most ports, coastlines and internal waterways is uploaded to the internet by the local community. This means that, if you are in one of these areas; your teammates, partners and loved ones will be able to view your location, using one of the free online AIS websites, from anywhere in the world.
Whether for peace of mind or project tracking, this can be very useful. Find out more here.
Do I need a Receiver or Transceiver?
Find out whether you need a Class A or Class B transceiver here.
Perfect for use in all Class B boats (under 300 tonnes etc.): sailing boats or yachts, small fishing boats, etc..
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