em-trak B923 Class B AIS Transceiver with Integrated VHF Splitter, 2W CSTDMA

B923 Class B AIS Transceiver with VHF Splitter – 2W CSTDMA

**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.

Get the most from your on-the-water experience with the B923, a 2W CSTDMA AIS Class B transceiver. Small and lightweight, it delivers em-trak’s advanced AIS performance to ensure you see all information and targets, even at maximum range, and with the lowest power consumption in its class.

The B923 is equipped with an integrated VHF antenna splitter, which enables your transceiver to share your existing VHF antenna without any loss of performance. It offers quick and simple installation, with built-in intelligent connectivity, including an integrated next-generation GPS receiver and antenna and em-trak’s unique FLEXI-FIT bracket system to get you up and running in no time at all. The dual NMEA2000 0183, coupled with serial ports, USB, optional Wi-Fi, and Bluetooth also make connecting to all your tablets, PCs, display, and navigation devices easy and simple.

Features:

• Certified AIS Class B 2W CSTDMA
• 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: -25C to +55C
• Storage temperature: -25C to +70C
• 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: 2A
• Average power consumption (at 12V): 2.9 W
• Galvanic isolation: NMEA 0183 inputs only, NMEA 2000, VHF antenna port

Connectors:

• VHF antenna: SO-239
• VHF radio: 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 62287-1 Ed. 3, 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: CSTDMA
• 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: 2W (+33dBm)

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 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.

em-trak B923 Class B AIS Transceiver with VHF Splitter delivers reliable automatic identification system (AIS) tracking for recreational and commercial vessels that need clear target information and flexible connectivity. Using 2W CSTDMA technology and an integrated VHF antenna splitter, the B923 allows the transceiver to share an existing VHF antenna without loss of performance, supporting a streamlined installation on boats with compatible navigation systems.

Built around em-traks SRT-AIS transceiver engine, the B923 combines an integrated GPS receiver and antenna with NMEA 0183, NMEA 2000, USB, serial, optional Wi-Fi, and Bluetooth connectivity. This makes it easier to connect AIS data to chart plotters, PCs, tablets, and other navigation displays. Its FLEXI-FIT mounting bracket supports convenient, secure installation, while automated health monitoring, silent mode, enhanced RF screening, power surge protection, and fail-safe VHF radio operation support dependable onboard use.

The B923 is designed for demanding marine environments, with IPX6 and IPX7 protection and resistance to vibration, shock, and extreme temperatures. It supports GPS, GLONASS, BeiDou, and Galileo satellite systems and operates on 12- or 24-volt DC power systems. FCC requirements state that units sold in the United States must be programmed by a qualified technician. A completed programming form, MMSI registration or FCC Ship Station License, and the vessel master or owners signature are required. Download the programming form.

Key Features:

• Certified AIS Class B 2W CSTDMA transceiver for vessel identification and target tracking.
• Integrated VHF antenna splitter enables use of an existing VHF antenna.
• Integrated GPS receiver and antenna with support for GPS, GLONASS, BeiDou, and Galileo.
• NMEA 0183, NMEA 2000, USB, serial, optional Wi-Fi, and Bluetooth connectivity for compatible navigation equipment.
• IPX6 and IPX7 protection with resistance to vibration, shock, and extreme temperatures.
• FLEXI-FIT mounting bracket, automated health monitoring, silent mode, and built-in power surge protection.

Product Details:

• Brand: em-trak
• Model: B923
• Part number: 430-0005
• VDL access scheme: CSTDMA
• AIS transmitter power: 2W (+33 dBm)
• Operating frequency: 156.025 MHz162.025 MHz
• Supply voltage: 12V or 24V DC; range 9.6V31.2V DC
• Dimensions: approximately 7 inches high by 7 inches wide by 6 inches deep
• Weight: approximately 0.8 pounds
• Connectors: SO-239 VHF antenna and radio ports, TNC GNSS port, 12-way power and data connector, NMEA 2000 Micro-C, and USB Micro-B
• Included: AIS transceiver, 6.6-foot power and data cable, FLEXI-FIT mounting bracket, screws, and optional fixing tape
• Programming: FCC-required qualified-technician programming applies to units sold in the United States

Important: This product may not be returned to the original point of purchase. Contact the manufacturer directly with any issues or concerns.

Choose the em-trak B923 for integrated AIS tracking, VHF antenna sharing, and versatile marine connectivity in a compact Class B transceiver.