A051T Class B WiFi & NMEA 0183/2000 AIS Transponder
$499.99
Enhance your safety and visibility on the water with our Class B AIS transceiver—perfect for recreational boats, yachts, and fishing vessels
- Low-cost anti-collision and monitoring system
- Receives and processes all AIS message types
- Automatically transmits position, speed, and heading to other vessels
- Silent mode for power saving, privacy, or security
- Supports WiFi connections for up to four devices
- Connects to NMEA 2000 networks for AIS and position data sharing
- Multiplexing additional NMEA 0183 input
- Built-in NMEA 0183 to NMEA 2000 Converter
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
Searching for a must have and essential piece of kit? If yes, then look no further!
The A051T Class B AIS Transponder is the ideal solution to transmit your ship’s information, including; location, name, vessel dimensions, speed etc..
The ideal transponder to fulfil your local Class B legal requirements, as well as for peace of mind and project tracking,
This is the ideal, compact AIS transponder.
In addition to transmitting your AIS information to local boats and receiving stations, the A051T will also convert incoming AIS messages (In the same fashion as our AIS Receivers).
The A051T will receive and decode your GPS location as well as the AIS messages from local ships. Combining the AIS and GPS data, you will be able to view which other boats and ships are around and your position compared to them and the coastline.
You can view your AIS and GPS data on:
- Chart plotters via NMEA 0183 or NMEA 2000 backbone
- your laptop, computer or tablet through USB OTG(Android or Linux compatible)
- up to 4 WiFi enabled devices
Features
| Feature | Description |
|---|---|
| Vessel data transmission | Sends vessel’s own position, speed, heading, etc. to other vessels and receiving stations within VHF range |
| GPS & AIS message reception | Receives and processes GPS data and all AIS message types |
| Monitoring other vessels | Allows monitoring of the position, speed, and heading of other AIS-equipped vessels within VHF range |
| Plotting vessel movement | Enables plotting the progress and heading/speed changes of AIS vessels on a PC, chart plotter, or wireless device |
| AIS transmitter standby | Includes a “Standby” mode to conserve power or provide privacy |
| Anti-collision system | Provides a low-cost anti-collision and monitoring solution |
| Compliance | Meets all required European R&TTE Article standards |
| LED feedback | LED lights provide real-time feedback; LEDs flash when a message is successfully transmitted or received |
| Raw AIS message viewing | Option to view raw AIS messages using the free OceanCom application |
Available to add to your order
VHF?AIS Antenna:
GPS Anetnna:
VHF/AIS Antenna Splitter:
| Document Type | Link |
|---|---|
| Set Up Guide |  |
| User Manual | |
| Firmware |  |
| Configuration Tool | |
Technical Specification
| Feature | Description |
|---|---|
| Standard | IEC 62287, ITU-R M.1371, IEC 60945, IEC 61162 |
| NMEA Output | NMEA 0183, RS422, 38400 bps |
| Sensitivity | -109 dBm |
| Power (TX) | 2 W |
| Channel A | CH87B (161.975 MHz) |
| Channel B | CH88B (162.025 MHz) |
| Input Level | 12V–24V |
| Transmit Mode | CSTDMA |
| Bandwidth | 25 kHz |
| Bit Rate | 9600 bps |
| Power Consumption | < 4 W |
Environmental Factors
| Condition | Description |
|---|---|
| Working Temperature | -15℃ to 55℃ |
| Storage Temperature | -25℃ to 70℃ |
| Humidity | 0–95% RH at 40℃ |
| Water Resistance | IPx2 |
Additional Specification
| Feature | Description |
|---|---|
| AIS Transmission Rate | 2 Watts, CSTDMA protocol |
| AIS Receiving Range | 40 nm |
| VHF Connector Port | SO239 / UHF Female (requires PL-259/UHF Male plug) |
| GPS Connector | TNC Female bulkhead; unit contains internal GPS module |
| Power Connector | 12-pin POWER/NMEA connector |
| Power Supply Range | 12V–35V |
| NMEA 0183 Output | Connects to chart plotters and compatible equipment |
| USB | Type-B USB for configuration (Windows needed initially) |
| WiFi Output | Broadcasts NMEA 0183; supports Ad-hoc & Station modes |
| NMEA 2000 Output | Connects to NMEA 2000 networks for AIS & position data |
| LED Indicators | Shows AIS TX/RX, GPS, WiFi, Power |
What’s included?
- A051T AIS Transponder (class B)
- 1x WiFi antenna
- 1 x 12 pin POWER/NMEA cable
- 1 x USB 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 A051T 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 A051T, compared to most other transponders.
Step 2 – Choose your power source
The A051T 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 A051T 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 accuate 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 the Mute button on the device itself. A red ring will be illuminated on the button when active.
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 A051T 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. See chapter in manual on Mobile Maritime Service Identity.
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.)
IMO – International Maritime Organization number should be entered into this section, if relevant. This can be found on the hull and certificates for the ship.
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
Introduction
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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