B954 Class B 5W SOTDMA WiFi & Bluetooth VHF Antenna Splitter

B953 B954 Class B 5W SOTDMA high performance VHF Antenna Splitter WiFi & Bluetooth b950 B923 B294 Class B AIS Transceiver 2W CSTDMA with Integrated Splitter

B954 Class B 5W SOTDMA WiFi & Bluetooth VHF Antenna Splitter

B953 B954 Class B 5W SOTDMA high performance VHF Antenna SplitterThis 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.


b954The 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.


  • Certified AIS Class B – 5W CSTDMA
  • Plug & play connectivity – WiFi and Bluetooth
  • Integrated high performance 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
  • Integrated high-performance GPS receiver & antenna (external antenna optional)
  • Water, pressure spray and damp proof (IPx6 & IPx7 Certified)
  • Ruggedized – protected from vibration, shock and extreme temperatures
  • Small and lightweight
  • Ultra-low power consumption – best in class
  • NMEA0183 & NMEA2000
  • Automated health and performance monitoring
  • Silent Mode (transmit-off) function
  • Enhanced RF screening to protect against electromagnetic interference
  • Built-in power surge protection

Technical specification

Size – 150mm x 110mm
Weight – 330g

Power Supply – 12-24V DC
Power Consumption
WiFi & Bluetooth on – 3.35W (280mA @ 12V)
WiFi & Bluetooth off – 2.95W (245mA @ 12V)

VHF Antenna Output – SO239
VHF Radio Input – SO239
GPS Antenna – TNC
NMEA2000 – Standard 5 Way Micro-C Connector
Power/NMEA0183 – 12 Way Circular Multipole
USB – Micro USB

Physical Data Interfaces
NMEA 0183
NMEA 2000

AIS Standards – IEC62287-2 Ed 2
Product Safety Standards – EN60950-1
Environmental Standard – IEC60945 Ed 4

Access Scheme – SOTDMA
Operating Frequency Range – 156MHz to 163MHz
AIS Receiver Sensitivity – -111dBm

AIS Transmit Power – 5W (+37dBm)

Channels – 72
GPS Type & Performance – GPS/Galileo + GLONASS or BEIDOU

Category – Exposed
Water Proofing – IPx6 & IPx7
Operating Temperature – -25°C to +55°C

VHF Radio Transmit Path Loss – <1dB
Receive Path Loss – 0dB
Path Switching Time – < 10us VHF Radio Path Rating > 25W
Path on Power Failure – VHF to Antenna
Antenna Fault Detection – Yes
Switch Type – Solid state

B954 Class B 5W SOTDMA

In The Box

  • 1 x AIS Transceiver
  • 1 x Power and Data Cable (2m)
  • 1 x VHF Radio Accessory Cable (1m)
  • 1 x FLEXI-FIT Mounting Bracket – Complete with Screws & Optional Fixing Tape


Full EM Trak Range : Em-trak Brochure

Product Brochure:  Em-trak Product_Datasheet

External Links

EM TRAK Home Page: www.em-trak.com

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Weight1000 g
Dimensions20 × 20 × 20 mm


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