Em-trak B924 AIS with splitter, WiFi, and Bluetooth (2W CSTDMA) and integrated GPS. The B923's integrated high-performance VHF antenna splitter can share the transceiver from your existing marine radio without loss of power. This AIS is robust—protected against vibration, shock, and extreme temperatures. Global certification - USCG, FCC, Canada, and Europe. Improved RF screening to protect against electromagnetic interference and built-in surge protection. The B923 has NMEA0183 and NMEA2000 connections.
Em-trak B924 AIS transponder specifications:
Dimensions 150 mm x 110 mm
Weight - 370 g
Power supply - 12-24V DC
Max. power consumption - 3.35 W (280 mA at 12V)
Access scheme - CSTDMA
Operating frequency range - 156 MHz to 163 MHz
AIS receiver sensitivity - -111dBm
AIS transmit power - 2 W (+ 33 dBm)
AIS standards - IEC62287-1 Ed 3
72 channels
GPS / Galileo + GLONASS or BEIDOU
Plug & play connectivity - WiFi and Bluetooth
VHF antenna output - S0239
VHF radio input - N/A
GPS antenna - TNC
NMEA2000 - Standard 5-way Micro-C connector
Power / NMEA0183 - 12-way circular multipole
Micro USB
IPx6 & IPx7
Operating temperature - -25 °C to + 55 °C




