em-trak B921 Class B AIS Transceiver - 2W CSTDMA [430-0001]
SKU: 25446621508

em-trak B921 Class B AIS Transceiver - 2W CSTDMA [430-0001]

Sale price$283.78 Regular price$315.31
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

em-trak B921 Class B AIS Transceiver - 2W CSTDMA [430-0001]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

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

Specifications:

  • AIS Class: B
  • Antenna Included: Yes
  • Display Included: No
  • Function: Receive/Transmit
  • GPS Included: Yes
  • Box Dimensions: 6"H x 7"W x 8"L WT: 1.55 lbs
  • UPC: 672975210502

Quick Guide (pdf)
Brochure (pdf)
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: 25446621508

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★★★★★ 5
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Price is right, no stuffing to pick up, dogs love them and just throw them out after they’re dirty and your dog got the squeaker out.
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Reviewed in the United States on October 3, 2025
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Waukegan, US
★★★★★ 5
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Style: Recharges, Size: Medium, Style: Recharges, Size: Medium
Great squeaky balls! Glow doesn’t last for a long time, but they go far in the Chuck it. Solid ball, my dog doesn’t seem to destroy them.
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Reviewed in the United States on February 11, 2026
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Jennifer Gugala
Boise, US
★★★★★ 5
Great ball!
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The dog loves chasing it! Walks around sqeeking it all the time. And bonus, I can see it in the middle of the floor when I get up in the middle of the night so I won't unknowing step on it.
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Fearless
Charlottesville, US
★★★★★ 5
Lil boy's favorite ball
Style: Recharges, Size: Medium
The squeak gets my little boy every time. The glow factor is under par. I mainly get it because he also enjoys the brighter colors. All of the others be trying to get his ball. Good product just wish it would glow better because our park times are right around sunset.
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Reviewed in the United States on January 20, 2026
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S. Ridgel
Omaha, US
★★★★★ 5
Chuck it!
Style: Recharges, Size: Medium
My Golden Doodle absolutely loves this ball. His new favorite!
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