em-trak B954 Class B SOTDMA AIS Transponder with Integrated Splitter, Wi-Fi and Bluetooth

Your Price: $1,400.00
Retail Price:$1,550.00
Your Savings:$150.00(10%)
In Stock
Part Number:ET-430-0015

Quick & Easy Online Form

Free Class B AIS Programming

FCC regulations require Class B AIS units to be programmed with MMSI and vessel information before shipping to US addresses. Milltech Marine provides this service free of charge.

Common Questions About MMSI

To make it more convenient for you to provide vessel information, we have prepared this quick and easy online form. Please complete and submit at time of order.
We are required to have proof of valid MMSI, so please also send a copy of the issuing document.
If you do not have a copy of your MMSI assignment, contact the issuing authority or organization. To search the FCC licensing database, click here. For BoatUS information, click here.
Go here if you do not have an FCC Ships Station License and MMSI and wish to obtain one.
The B954 is a high transmit power (5W SOTDMA) AIS Class B transceiver that is small, light-weight, yet delivers the very best AIS receive and transmit performance so you see more AIS information and targets at maximum range – all achieved with the least power consumption.

The B954 combines WiFi & Bluetooth for seamless wireless connectivity and AIS data streaming to any mobile device or PC as well as a high performance integrated VHF antenna splitter which enables the transceiver to share your existing VHF antenna without any loss of performance. With built in intelligent connectivity, integrated next generation GPS receiver & antenna and a unique FLEXI-FIT bracket system, safe and secure installation is simple.
  • High transmit power AIS Class B Transceivers
  • Delivering the very best AIS performance and connectivity 
  • Built-in Intelligent Connectivity 
  • Integrated VHF Antenna Splitter 
  • Integrated next-generation GPS
  • Integrated Wi-Fi and Bluetooth support 
  • Unique FLEXI-FIT® bracket system, safe and secure installation could not be easier.


Core technology continuously developed and proven over many years guarantees you the very best AIS receive and transmit and GPS performance, coupled with the lowest power consumption of any comparable AIS transceiver.


Quality engineered and manufactured with the best components to provide years of continuous, maintenance free operation in even the most extreme environments – impervious and protected against the long-term effects of water, damp, shock, vibration and extreme cold and heat.

PLUG & PLAY | Connectivity

Guaranteed connectivity to any chart-plotter and PC/Phone/Tablet/Watch and navigation app. This ensures you are not limited to any display device or navigation application now or in the future and can maximize AIS related functionality such as weather, MOB, anti-collision, anchor safety, vessel tracking and more.


With features such as FLEXI-FIT bracket, integrated GPS antenna, VHF antenna splitter and unlimited connectivity options such as NMEA2000 & 0183. em-trak AIS transceivers are easy to configure and install on any boat.


em-trak transceivers are rigorously tested and certified for global regulatory compliance. This includes FCC, USCG, Canada and EU test and certification.

24/7 CUSTOMER SUPPORT | Warranty & support

em-trak transceivers are designed and engineered for a life time of reliable operation in even the most extreme environments. This is supported by our best in class global warranty program with 24/7 customer support.
5 Stars
Top of the line
This AIS transponder has all the bells and whistles and performs very well. I typically track pleasure boats at 20 miles, commercial traffic at 30 miles, AToNs at 60 miles, and the record is a oil rig at 178 miles! It puts out a strong SOTDMA signal and have observed large ships alter course to avoid us when we were barely in visual range at night. I use the built-in GPS, have it mounted just below deck, and have not had any GPS issues. Installation was easy, the only issue is that there are multiple cables that plug into opposite ends of the unit, so finding a good mounting location was problematic. Also the wifi didn't work out of the box, I had to plug it into a laptop and use the utility program to re-enable it.
Did you find this helpful?  12 of 12 Found Helpful
Reviewed by: (Verified Buyer)  from Galveston, TX. on 8/5/2020
5 Stars
Great unit, but some installation issues
Good accuracy and signal quality, GPS feed was solid. Since the Milltech folks did the configuration it was a "plug in and go" process. Overall I am very pleased, but encountered similar fit issues as reported by the other reviewer. Some is due to the small available space on my boat, so check this on yours before ordering to avoid disappointment. The cables will stick out straight from the box so you will need to allow at least a couple of extra inches on each side, even if you can use right-angle connectors. However, the provided NMEA 0183 cable has a connector (which also has the power leads built in as a secondary cable) that sticks out 3". I looked for a right angle connector version or just one for the power leads (I am using a NMEA 2000 network) but no luck.
Did you find this helpful?  9 of 9 Found Helpful
Reviewed by: (Verified Buyer)  from Chesapeake Bay, MD. on 10/15/2020
4 Stars
I like the transponder and it works great. I am disappointed that the Bluetooth does not work on my iPad.
Did you find this helpful?  7 of 7 Found Helpful
Reviewed by: (Verified Buyer)  from Lancaster Virginia. on 12/28/2020
5 Stars
I've installed this in the "e-box" below the fiberglass top on a center console. The built-in GPS antenna works fine in that location. I like the splitter because I didn't want to install a second antenna. It is literally plug and play. There is an iphone app (connects via WiFi - the bluetooth does work with iOS) that allows you to switch the transmit on and off, so if that function is of interest, there is no need to install a physical switch. My only complaint is the size and length of the 12-wire power/data cable. I would have preferred a 2 or 4-wire power cable that I could shorten, as I don't need NMEA 0183 capability. But that would require a bigger box, and I really like the small size of this box. Literally every other piece of electronic equipment on my boat is Simrad (2 MFDs, VHF, sat. compass, auto pilot, radar), but the Simrad box is just too big and this is a more capable unit. It integrates perfectly with the MFDs over NMEA 2000, and targets show up on the charts. This has been a great unit so far, and I would highly recommend it. Milltech was great to deal with. They followed up with me by email right after I placed the order and explained when I would receive it. Highly responsive! I highly recommend them, as well. The only downside for me is that they are on the West Coast, and I'm on the East, so shipping takes a few days. But I would order from Milltech again in a heartbeat.
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Chesapeake Bay, MD. on 6/27/2021
5 Stars
Great Product
Shortly after ordering I was contacted to provide information so they could start programming, I was impressed by how quickly this happened and with all communication from Mill Tech. While shipping did take longer than expected it was Detroit's USPS fault and plenty of sources to back that up. No fault of Mill Tech's. The B954 was easy to install and get going. Bonus is that if you use a Chromebook you can then integrate AIS with Navionics and you get AIS plus GPS location. GPS location on a Chromebook is something that I have found extremely problematic. So having this solve my GPS Chromebook problem was a very nice plus. I would highly recommend this product and would purchase from Mill Tech again.
Did you find this helpful?  5 of 6 Found Helpful
Reviewed by: (Verified Buyer)  from Oriental, NC. on 1/12/2021
5 Stars
Easy to install, works well with Standard Horizon GX2000 and INavX on an Ipad. Iphone app allows for managing settings. Perfect.
Did you find this helpful?  4 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Muskegon. on 6/1/2021


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