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B953 CLASS B

B953 CLASS B
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B953 CLASS B

Product catalog summary
Product Overview: The B953 is a high transmit power (5W SOTDMA) Class B AIS transceiver designed for optimal AIS receive and transmit performance with ultra-low power consumption. It features a compact and lightweight design, making it suitable for various marine applications.
Key Features:
  • Certified AIS Class B with 5W SOTDMA for superior performance.
  • Integrated VHF antenna splitter for shared use without performance loss.
  • Global certifications including USCG, FCC, Canada, and Europe.
  • FLEXI-FIT™ bracket system for easy installation.
  • Internal high-performance GPS receiver and antenna, with an option for an external antenna.
  • Waterproof and resistant to pressure spray and damp conditions (IPx6, IPx7 certified).
  • Protected against vibration, shock, and extreme temperatures.
  • Guaranteed connectivity with any chart plotter or PC via NMEA 0183 & NMEA 2000.
  • Automated health and performance monitoring with silent mode function.
  • Enhanced RF screening and built-in power surge protection.
Physical & Environmental Specifications:
  • Dimensions: 150 x 115 x 45mm; Weight: 415g.
  • Operating temperature: -25°C to +55°C; Storage temperature: -25°C to +70°C.
  • Ingress protection: IPx6 and IPx7.
Electrical Specifications:
  • Supply voltage: 12V or 24V DC; Range: 9.6V - 31.2V DC.
  • Average current at 12V: 245mA; Peak current: 2.5A.
  • Average power consumption at 12V: 2.9W.
Data Interfaces:
  • NMEA 0183: 2 x bi-directional ports.
  • 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.
  • GNSS performance standards: IEC 61108-1 Ed 2.0, IEC 61108-02 Ed 1.0.
GNSS Specifications:
  • Supports GPS, GLONASS, BeiDou, Galileo.
  • 72 channels with internal or optional external antenna.
  • Time to first fix from cold start: 26s.
VHF Transceiver Specifications:
  • VDL access scheme: SOTDMA.
  • Operating frequency: 156.025MHz - 162.025MHz.
  • Channel bandwidth: 25kHz.
  • Receivers/transmitters: 2 x receivers, 1 x transmitter.
  • AIS receiver sensitivity: -111dBm; AIS transmitter power: 5W (+37dBm).
User Interface:
  • Indicators for power, transmit timeout, error, and silent mode.
Package Contents:
  • 1 x AIS transceiver, 1 x Power and data cable (2M), 1 x VHF radio accessory cable, 1 x FLEXI-FIT™ mounting bracket with screws & optional fixing tape.
Warranty: The product comes with a three-year global warranty. Returns are accepted within two days of receipt if the product is complete and undamaged. Contact Customer Support for issues.
Installation Guide: Includes connections for power, NMEA 2000, chartplotter, VHF antenna, VHF radio, USB, NMEA 0183 device, and optional GNSS antenna.
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Catalog excerpts

B953 CLASS B-1

HIGH TRANSMIT POWER (5W SOTDMA) The B953 is a high transmit power (5W SOTDMA) I Certified AIS Class B – 5W SOTDMA Class B AIS transceiver that is small and lightweight, I Integrated VHF antenna splitter yet delivers the very best AIS receive and transmit I Global certification - USCG / FCC / Canada / Europe performance so you see more AIS information and targets at maximum range – all achieved with the lowest power consumption. The integrated high performance VHF antenna splitter of the B953 enables the transceiver to share I SRT-AIS™ Transceiver Engine for superlative proven performance I FLEXI-FIT™ bracket system for easy, convenient and secure installation I Internal high-performance GPS receiver and antenna (external antenna optional) of performance and fail safe reliability. With built-in I Water, pressure spray and damp proof (IPx6, IPx7 certified) intelligent connectivity, integrated next generation I Protected from vibration, shock and extreme temperatures your existing VHF radio antenna without any loss GPS receiver & antenna and a unique FLEXI-FIT™ bracket system, safe and secure installation is simple. I Ultra-low power consumption – best in class I uaranteed connectivity and interoperability with any G chart plotter or PC I NMEA 0183 & NMEA 2000 I Automated health and performance monitoring I Silent mode (transmit-off) function I Enhanced RF screening to protect against electromagnetic interference I Built-in power surge protection I Fail safe VHF radio operation

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B953 CLASS B-2

PHYSICAL & ENVIRONMENTAL SPECIFICATION Size (H x W x D) Operating temperature Storage temperature Ingress protection GNSS Systems supported Supply voltage Supply voltage range Peak current Average power consumption (at 12V) Galvanic isolation NMEA 0183 inputs only, NMEA 2000, VHF antenna port Internal/external antenna Internal or optional external antenna Time to first fix from cold start ELECTRICAL SPECIFICATION GPS, GLONASS, BeiDou, Galileo (two of any combination, three including GPS, Galileo) Operating frequency Channel bandwidth USER INTERFACE 1 x Power and data cable (2M) Power, transmit...

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B953 CLASS B-3

INSTALLATION GUIDE VHF radio GNSS antenna (Optional)

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.