SKU: 24632169577

em-trak B953 Class B AIS Transceiver - 5W SOTDMA w/VHF Antenna Splitter [430-0013]

Sale price$425.90 Regular price$473.22
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Description

em-trak B953 Class B AIS Transceiver - 5W SOTDMA w/VHF Antenna Splitter [430-0013]B953 Class B AIS Transceiver 5W SOTDMA with VHF Antenna Splitter **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 the 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. The B953 is a high transmit power (5W

B953 Class B AIS Transceiver - 5W SOTDMA with VHF Antenna Splitter

**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 the 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.

The B953 is a high transmit power (5W SOTDMA) AIS Class B transceiver that is small, and lightweight, 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 B953 has an 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.

Features:

  • Certified AIS Class B – 5W SOTDMA
  • Integrated VHF antenna splitter
  • Global certification - USCG / FCC / Canada / Europe
  • SRT-AIS™ Transceiver Engine for superlative proven performance
  • FLEXI-FIT™ bracket system for easy, convenient, and secure installation
  • Internal high-performance GPS receiver and antenna (external antenna optional)
  • Water, pressure spray, and damp proof (IPx6, IPx7 certified)
  • Protected from vibration, shock, and extreme temperatures
  • Small and lightweight
  • Ultra-low power consumption – best in class
  • Guaranteed connectivity and interoperability with any chart plotter or PC
  • NMEA 0183 & NMEA 2000
  • Automated health and performance monitoring
  • Silent mode (transmit-off) function
  • Enhanced RF screening to protect against electromagnetic interference
  • Built-in power surge protection
  • Fail-safe VHF radio operation

Physical & Environmental Specifications:

  • Size (H x W x D): 150 x 115 x 45mm
  • Weight: 415kg
  • Operating temperature: -25°C to +55°C
  • Storage temperature: -25°C to +70°C
  • Ingress protection: IPx6 and IPx7

Electrical Specifications:

  • Supply voltage: 12V or 24V DC
  • Supply voltage range: 9.6V - 31.2V DC
  • Average current (at 12V): 245mA
  • Peak current: 2.5A
  • Average power consumption (at 12V): 2.9W
  • Galvanic isolation: NMEA 0183 inputs only, NMEA 2000, VHF antenna port

Connectors:

  • VHF antenna: SO-239
  • GNSS: TNC
  • Power: 12-way circular multipole
  • NMEA 2000: 5-way Micro-C connector
  • USB: USB Micro-B

Data Interfaces:

  • NMEA 0183: 2 x bi-directional ports
  • NMEA 2000: NMEA 2000 Ed 3.101, LEN=1
  • USB: PC virtual com port for NMEA 0183 data

Standards Compliance:

  • AIS standards: IEC 62287-2 Ed. 2, ITU-R M.1371.5
  • Product safety standards: EN60950-1 2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013 EN62311:2008
  • Environmental standards: IEC 60945 Ed. 4
  • Serial data interface standards: IEC 61162-1 Ed 5.0, IEC 61162-2 Ed 1.0
  • NMEA 2000: NMEA 2000 Ed 3.101
  • GNSS performance standards: IEC 61108-1 Ed 2.0, IEC 61108-02 Ed 1.0

GNSS:

  • Systems supported: GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo)
  • Channels: 72
  • Internal/external antenna: Internal or optional external antenna
  • Time to first fix from the cold start: 26s

VHF Transceiver:

  • VDL access scheme: SOTDMA
  • Operating frequency: 156.025MHz - 162.025MHz
  • Channel bandwidth: 25kHz
  • Receivers/transmitters: 2 x receivers, 1 x transmitter
  • AIS receiver sensitivity (20% PER): -111dBm
  • AIS transmitter power: 5W (+37dBm)

User Interface:

  • Indicators: Power, transmit timeout, error, silent mode

In the Box:

  • 1 x AIS transceiver
  • 1 x Power and data cable (2M)
  • 1 x VHF radio accessory cable
  • 1 x FLEXI-FIT™ mounting bracket
  • Complete with screws & optional fixing tape
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Specifications:

  • AIS Class: B
  • Antenna Included: Yes
  • Display Included: No
  • Function: Receive/Transmit
  • GPS Included: Yes
  • Box Dimensions: 5"H x 7"W x 8"L WT: 1.9 lbs
  • UPC: 672975210564

Quick Guide (pdf)
Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 24632169577

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4.2 ★★★★★
Based on 27 reviews
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Rebecca Parker
Lowell, US
★★★★★ 5
#1 Tire Repair
Size: 16 oz
This stuff is Fantastic. I have a riding lawn mower and one of the front tires, which is small, had been running low for a couple of years, we took it off. to fill it with the liquiTube and you could see cracks all around the outside of the tire. The liquid tube oozed out of one of the cracks and sealed , immediately. My brother rolled the tire around real good before we put it back on the track lawn mower. It has been 3 days now and today I mowed for 1 1/2 hrs and the tire as full as it was the day we put in the LiquiTube. This stuff is fantastic, it really, really works!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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Jana
Natrona Heights, US
★★★★★ 4
Awesome
Size: 32 oz
Works as advertised. Just don't scrimp... give it the full recommended amount in each tire
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Reviewed in the United States on May 27, 2026
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kevin weir
Pawtucket, US
★★★★★ 5
This tire sealant works very well
Size: 16 oz
So far so good. Cheaper and easier that tubing a leaking tire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
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Jerry D
Whiting, US
★★★★★ 3
Hard to install as instructed.
Size: 32 oz
Nearly impossible to get it in the tire through the valve. Yes I removed the valve core. Broke the bead on the tire and dumped it in. That worked great! So far no leaks. They should definitely redesign the installation method.
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Reviewed in the United States on April 28, 2026
B
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bsync
Fort Morgan, US
★★★★★ 5
Been using it for 15 years! Not sure where the Neg reviews come from?
Size: 16 oz
I've been using Liquitube since around 2010. I use it religiously in my ATVs and lawn tractor tires. Since I've been using this stuff, I've never had a flat before. I've pulled out nails and slivers of steel out of my ATV tires but yet none of them lose air or go flat. I think some of the negative reviews come from improper use of the product or not enough of the product is being used in the tires. I think this come from variance in formula charts that Liquitube has had in the past on their bottles and on their website. The chart on their website wouldn't match the formula that was provided on the bottle. So I think alot of people get mixed up and not knowing the correct amount to add to each tire. Now Liquitube just puts pictures on the side of the bottle with an ounce measurement below each picture to tell people how to use it. But even that can be confusing. For instance, take the picture of the ATV that they show. Below the ATV it says 32oz. Now some people probably think the 32oz is for the entire ATV. Well that isn't the case. They want you to use 32oz Per Tire! Years ago Liquitube even used to say on the bottle to use 32oz per tire on an ATV. Now they just show a picture with an amount below it. Now you'll come to find out that the 32oz they recommend doesn't match up to the formula they tell you to use to calculate how much each tire is supposed to get. So if you use the formula provided, you come to find that it calculates out to use less product per tire than what the bottle tells you to use. So that's very confusing as well. So if you use it long enough, you'll be able to know how much each tire will need from experience. Just make sure there's enough on the inside of the tire to coat the entire inside as well as leaving a bit left over to circulate in the tire so it can be ready for a large puncture if that ever happens. All in all, it's a good product that does what it claims. It lasts for as long as the tire does and it doesn't freeze up in the cold either! 5 stars!
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Reviewed in the United States on February 13, 2026

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