em-trak B953 Class B AIS Transceiver - 5W SOTDMA w/VHF Antenna Splitter

The B953 Class B AIS Transceiver is a top-tier solution for marine communication, offering high transmit power and exceptional performance in a compact and lightweight design. Engineered for boating enthusiasts, this transceiver ensures you stay connected with superior AIS reception and transmission capabilities, all while maintaining minimal power consumption.

Easy Compliance and Setup

As the FCC requires all units sold in the US to be programmed by a qualified technician, please submit the form below at the time of purchase. A copy of the MMSI registration or FCC Ship Station License, along with the vessel master or owner's signature on the completed programming form, is required.

Click here to download the programming form.

Advanced Features for Optimal Performance

• Certified AIS Class B – 5W SOTDMA: Ensures reliable and efficient communication with a high transmit power of 5W.
• Integrated VHF Antenna Splitter: Share your existing VHF antenna without compromising performance.
• Global Certification: Compliant with USCG, FCC, Canada, and European standards.
• SRT-AIS™ Transceiver Engine: Delivers proven, superior AIS performance.
• FLEXI-FIT™ Bracket System: Facilitates easy, secure, and convenient installation.
• High-Performance GPS: Integrated GPS receiver and antenna with an option for an external antenna.
• Durable and Reliable: Water, pressure spray, and damp-proof (IPx6, IPx7 certified), and protected from vibration, shock, and extreme temperatures.
• Compact Design: Small and lightweight for easy integration into your vessel.
• Energy Efficient: Ultra-low power consumption, best in class.
• Seamless Connectivity: Guaranteed interoperability with any chart plotter or PC via NMEA 0183 & NMEA 2000.
• Smart Monitoring: Automated health and performance monitoring ensures optimal operation.
• Enhanced Safety Features: Includes silent mode, RF screening, power surge protection, and fail-safe VHF radio operation.

Technical Specifications

Physical & Environmental

Electrical Specifications

Connectors

• VHF antenna: 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 62287-2 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 (two of any combination, three including GPS, Galileo)
• Channels: 72
• Antenna Options: Internal or optional external antenna
• Time to First Fix (Cold Start): 26 seconds

VHF Transceiver Specifications

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

User Interface

• Indicators: Power, transmit timeout, error, silent mode

What's in the Box

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

Product Specifications

Additional Resources

Quick Guide (PDF)

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.