B923 Class B AIS 2W/CS antenna splitter

B923 Class B AIS Transceiver 2W CSTDMA with Integrated Splitter

B923 Class B AIS Transceiver 2W CSTDMA with Integrated Splitter

B923 Class B AIS Transceiver 2W CSTDMA with Integrated SplitterThe B923 is a standard power (2W CSTDMA) 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.


B923 Class B AIS Transceiver 2W CSTDMA with Integrated SplitterThe B923 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 the unique FLEXI-FIT® bracket system, safe and secure installation is simple.

B923 Class B AIS Transceiver Features

  • Certified AIS Class B – 2W CSTDMA
  • Integrated high performance zero loss VHF antenna splitter
  • Global Certification – USCG / FCC / Canada / Europe
  • SRT-AIS™ transceiver engine for superlative proven performance
  • FLEXI-FIX™ 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
  • Ruggedized – protected from vibration, shock and extreme temperatures EM TRAK B923
  • Small and lightweight
  • Ultra-low power consumption – best in class
  • Guaranteed connectivity and interoperability with any app, chart plotter, smart phone, tablet or PC
  • NMEA0183 & NMEA2000
  • Automated health and performance monitoring
  • Silent Mode (transmit-off) function
  • Enhanced RF screening to protect against electromagnetic interference EM TRAK B923
  • Built-in power surge protection

B923 EM TRAK B923

B923 Class B AIS Transceiver Technical specification

Size – 150mm x 110mm
Weight – 360g

Power Supply – 12-24V DC
Power Consumption – 2.95W (245mA @ 12V)

Physical Data Interfaces
NMEA0183 (2)

VHF Antenna Output – SO239
VHF Radio Input – SO239
GPS Antenna – TNC EM TRAK B923
NMEA2000 – Standard 5 Way Micro-C Connector
Power/NMEA0183 – 12 Way Circular Multipole
USB – Micro USB

AIS Standards – IEC62287-1 Ed 3
Product Safety Standards – EN60950-1
Environmental Standard – IEC60945 Ed 4 EM TRAK B923

Access Scheme – CSTDMA
Operating Frequency Range – 156MHz to 163MHz
AIS Receiver Sensitivity – -111dBm
AIS Transmit Power – 2W (+33dBm)

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 B923
Antenna Fault Detection – Yes
Switch Type – Solid state

In the box

  • 1 x AIS Transceiver
  • 1 x Power and Data Cable (2m)
  • 1 x VHF Radio Accessory Cable (1m) EM TRAK B923
  • 1 x FLEXI-FIT Mounting Bracket – Complete with Screws & Optional Fixing Tape


Full EM Trak Range : Em-trak Brochure 2020

Product Brochure:  Em-trak Product_Datasheet_B923

External Links

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

Need more help then please contact us for advise and information regarding EM-TRAK B200 AIS or any other products. B923

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Weight1000 g
Dimensions20 × 20 × 20 mm


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