em-trak B951 Class B AIS Transceiver - 5W SOTDMA [430-0009]
em-trak B951 Class B AIS Transceiver - 5W SOTDMA [430-0009]
B951 Class B AIS Transceiver - 5W SOTDMA: **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.
In stock — ships today if ordered by 2 PM ET
About the ais system.
B951 Class B AIS Transceiver - 5W SOTDMA: **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 B951 is a high-power (5W SOTDMA) Class B transceiver, delivering advanced performance and ultimate reliability through em-trak's next-gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real-time, with increased range and transmission priority so you always have the complete picture and the time to respond, even in the busiest waters. em-trak's flexible, intelligent connectivity means the B951 can be paired to any chart-plotter and its next-gen GPS receiver and the antenna are already integrated inside the device to provide best-in-class, ultra-low power consumption, and performance. em-trak's unique FLEXI-FIT® bracket system completes the package and ensures easy installation. Features:: Physical & Environmental Specifications:: Electrical Specifications:: Connectors:: Data Interfaces:: Standards Compliance:: GNSS:: VHF Transceiver:: User Interface:: In the Box:: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.: Specifications:: Quick Guide (pdf) Brochure (pdf)
- Certified AIS Class B – 5W SOTDMA
- 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)
Product specifications
Full specifications are being added. Call the Field Desk at (704) 709-5290 for details on this item.
Certified AIS Class B – 5W SOTDMA
Engineered and field-tested with em-trak. em-trak gear, chosen and stocked by the Bucks & Bass Field Desk.
Global certification - USCG / FCC / Canada / Europe
Engineered and field-tested with em-trak. em-trak gear, chosen and stocked by the Bucks & Bass Field Desk.
SRT-AIS™ Transceiver Engine for superlative proven performance
Engineered and field-tested with em-trak. em-trak gear, chosen and stocked by the Bucks & Bass Field Desk.
Fit notes
Runs true to size with room for a midweight layer underneath. If you are between sizes and plan to layer heavily, size up. Field Desk staff can confirm fit by phone or chat before you order.
Size chart
| Size | Chest | Waist | Sleeve |
|---|---|---|---|
| S | 35–37 | 29–31 | 32.5 |
| M | 38–40 | 32–34 | 33.5 |
| L | 41–43 | 35–37 | 34.5 |
| XL | 44–46 | 38–40 | 35.5 |
| 2XL | 47–49 | 41–43 | 36.5 |
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“Exactly as described. Quiet, well built and the fit is right. Second season with it and no complaints.”
Mark T.Verified buyer • Whitetail“Bought this on a Field Desk recommendation and it was the right call. Shipping was fast.”
Jenna R.Verified buyer • Weekend trips“Solid gear for the money. Would like one more color option but performance is there.”
Cody B.Verified buyer • BassFree standard shipping
Orders over $75 ship free in 3–5 business days. Orders placed before 2 PM ET ship the same day.
Easy 30-day returns
Unused gear in original packaging can be returned within 30 days for a full refund. We email a prepaid label.
Warranty handled for you
Full em-trak manufacturer warranty. Our Warranty Center manages the claim so you do not have to chase the brand.
Recommended with it.
Add the two most-paired items and save 10%.
em-trak B951 Class B AIS Transceiver - 5W SOTDMA [430-0009] + Digital Yacht AIS100 AIS Receiver [ZDIGAIS100] + Digital Yacht AISnet AIS Base Station [ZDIGAISNET]


