em-trak B954 Class B AIS Transceiver - 5W SOTDMA w/WiFi, Bluetooth, VHF Antenna Splitter

The B954 Class B AIS Transceiver is the ultimate solution for mariners seeking reliable and high-performance Automatic Identification System (AIS) capabilities. With a powerful 5W SOTDMA transmission, integrated WiFi and Bluetooth, and an innovative VHF antenna splitter, the B954 ensures seamless connectivity and superior AIS data management for your vessel.

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 the programming form.

Key Features

• Certified AIS Class B – 5W SOTDMA: Ensures compliance with international AIS standards and provides robust transmission capabilities.
• Integrated WiFi and Bluetooth: Facilitates wireless connectivity and AIS data streaming to mobile devices, PCs, and wearables.
• VHF Antenna Splitter: Allows the transceiver to share your existing VHF antenna without compromising performance.
• Global Certification: Approved by USCG, FCC, Canadian, and European authorities for worldwide use.
• SRT-AIS™ Transceiver Engine: Delivers proven, high-performance AIS functionality.
• FLEXI-FIT™ Bracket System: Simplifies installation with an easy-to-use mounting solution.
• Integrated GPS Receiver: Features a next-generation GPS receiver and antenna, with optional external antenna support.
• Weatherproof Design: IPx6 and IPx7 certified to withstand harsh marine environments.
• Enhanced Durability: Resistant to vibration, shock, and extreme temperatures for reliable operation.
• Energy Efficient: Boasts ultra-low power consumption, making it the best in its class.
• Guaranteed Connectivity: Seamlessly interoperates with any app, chart plotter, smartphone, tablet, or PC.
• NMEA 0183 & NMEA 2000: Supports industry-standard marine data protocols.
• Automated Health Monitoring: Continuously monitors transceiver performance and health.
• Silent Mode: Features a transmit-off function for discreet operations.
• Advanced RF Protection: Enhanced screening against electromagnetic interference.
• Power Surge Protection: Built-in safeguards against electrical surges.
• Fail-safe VHF Operation: Ensures reliable VHF radio functionality at all times.

Physical & Environmental Specifications

Electrical Specifications

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
• Wi-Fi: IEEE 802.11 (a/b/g), supports client and access point modes with up to 2 connections in access point mode
• Bluetooth: BT Classic 4.0, supports up to 7 concurrent connections

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 Capabilities

• Supported Systems: GPS, GLONASS, BeiDou, Galileo (any two combinations, or three including GPS and Galileo)
• Channels: 72
• Antenna: Built-in GPS receiver and antenna with an option for an external antenna
• Time to First Fix (Cold Start): 26 seconds

VHF Transceiver Details

• VDL Access Scheme: SOTDMA
• Operating Frequency: 156.025 MHz - 162.025 MHz
• Channel Bandwidth: 25 kHz
• Receivers/Transmitters: 2 x Receivers, 1 x Transmitter
• AIS Receiver Sensitivity (20% PER): -111 dBm
• AIS Transmitter Power: 5 W (+37 dBm)

User Interface

• Power Indicator
• Transmit Timeout Indicator
• Error Indicator
• Silent Mode Indicator

What's Included

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

Additional Specifications

Download the Quick Guide (PDF)

Download the Brochure (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.