SKU: 53153888627

em-trak B921 Class B AIS Transceiver - 2W CSTDMA

Sale price$386.23 Regular price$429.14
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Description

em-trak B921 Class B AIS Transceiver - 2W CSTDMAB921 Class B AIS Transceiver 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. The B921 is a 2W CSTDMA Class B AIS transceiver, delivering em

B921 Class B AIS Transceiver - 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.

The B921 is a 2W CSTDMA Class B AIS transceiver, delivering em-trak's advanced performance and reliability through next-gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real-time, even at the range limit, so you always have the complete picture and the time to respond.

em-trak's intelligent connectivity means the B921 can be connected to any chart-plotter and comes equipped with integrated GPS technology and best-in-class, ultra-low power consumption. Installation is also simplified with our unique FLEXI-FIT® bracket system to have you up and running in no time at all.

Features:

  • Certified AIS Class B – 2W CSTDMA
  • 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
  • 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

Physical & Environmental Specifications:

  • Size (H x W x D): 150 x 115 x 45mm
  • Weight: 375kg
  • 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
  • Supply voltage range: 9.6V - 31.2V DC
  • Average current (at 12V): 135mA
  • Peak current: 2A
  • Average power consumption (at 12V): 1.6W
  • Galvanic isolation: NMEA 0183, NMEA 2000, VHF antenna port

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 62287-1 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

Manufacturer Part Numbers: 430-0001
Quick Guide (PDF)
Brochure Literature (PDF)
Installation Guide (PDF)
GRP:WRO
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 53153888627

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4.6 ★★★★★
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Verified Purchase
Benniel Brown
Charlottesville, US
★★★★★ 4
Perfect for limited space
Overall, I think these side tables are decent and work well for a small living room. They were easy to assemble and the size is perfect for limited space. The only minor issue I had was with the adjustable feet—on two of the legs, the plastic foot came off and wouldn’t stay attached. I tried pushing the plastic piece back onto the screw, but couldn’t get it to stay in place.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
D
Verified Purchase
DezisDiVa
Louisville, US
★★★★★ 5
I made a great choice purchasing this side table!
Color: Rustic Brown + Black, Item Package Quantity: 1, Color: Rustic Brown + Black, Item Package Quantity: 1
This is the perfect side table when space is limited. It was easy to assemble. The functionality to charge my tech is a major plus. A sturdy fabric basket, which is provided is a great way to store the little extras. A great value for the small price. It also arrived very quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2025
A
Verified Purchase
Amazon Customer
Draper, US
★★★★★ 3
Missing parts
Color: Rustic Brown + Black, Item Package Quantity: 1
The table is perfect for needs…unfortunately I only got 3 {instead of 4} feet for the legs. I’m not taking it apart for return. The instructions state “feel free to contact by email…”. Can’t find an email address. Really just want another foot…..please
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
K
Verified Purchase
KeyWest
Grantham, US
★★★★★ 5
Great for limited space where a small table is still needed or wanted!!
Color: Rustic Brown + Black, Item Package Quantity: 1, Color: Rustic Brown + Black, Item Package Quantity: 1
Excellent little bedside table for limited spaces!! Got the matching mini fridge table right next to it. Packaging was excellent, instructions straight forward and easy to follow. The stand itself is very sturdy and stable. Has a standard plug and one USB-A and one USB-C plugs as well which come in handy and work perfectly. Has a material cube type addition for the bottom shelf. It is not a drawer as it fits snuggly between the legs but does hold a good variety of items and has a hard bottom insert. I am very happy with this purchase and recommend this small size table!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
J
Verified Purchase
Jewelwing
Draper, US
★★★★★ 5
cute, functional side table
Color: Rustic Brown + Black, Item Package Quantity: 1
This table was pretty easy to put together, and all the pieces seem solid. I love that you can choose where to put the usb/outlet. I put it on the middle shelf to that if I happen to spill my coffee on the top shelf, it's less likely to get into the outlet. I chose to leave off the bottom feet because I wanted it a little shorter. In order to do that, I had to find my own screws to attach the bottom shelf to the legs above it, but once I did that, it's perfect. Since it's so narrow, it does seem a little wobbly on carpet, but I hope being right next to the couch arm will keep it from being bumped and falling over. It would probably be a little less wobbly if I'd chosen to keep the feet on the bottom, so that's on me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2024

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