em-trak B951 Class B AIS Transceiver – 5W SOTDMA
Using 5-watt SOTDMA transmission, the em-trak B951 broadcasts Class B vessel data while receiving nearby AIS targets. Its higher-power reporting supports improved visibility to surrounding traffic, helping recreational and smaller commercial vessels share position information and make more informed navigation decisions.
EM-TRAK B951 Class B AIS Transceiver (5W SOTDMA) Specifications
| Communication Type | High-Power Class B+ AIS Transceiver |
| AIS Class/Protocol | SOTDMA (Class B+ High Speed) |
| Output Power | 5W Output Power |
| Frequency Range | 156.025 – 162.025 MHz |
| Reporting Rate | Up to Every 5 Seconds (Speed Dependent) |
| Operating Voltage | 12V / 24V DC Universal Support |
| Current Draw | < 2.5A Peak / 210mA Average |
| Interface/Networking | NMEA 2000, NMEA 0183, USB Interface |
| Internal GPS | 72-Channel Integrated GNSS Receiver |
| Display Type | Multi-Color LED Status System |
| Waterproof Rating | IP67 Fully Waterproof |
| Operating Temperature | -25°C to +55°C Performance Range |
| Length (Overall) | 150 mm (5.9") Profile |
| Width/Diameter | 110 mm (4.3") Body Width |
| Weight | 0.38 kg (0.84 lbs) |
| Included Accessories | Power/Data Cable, FLEXI-FIX Mounting Bracket |
| Key Mechanical Feature | Small footprint with high-speed SOTDMA connectivity |
Common Question of em-trak B951
What is the B951 transceiver?
The em-trak B951 is a Class B AIS transceiver with 5W SOTDMA according to the listing. It transmits and receives vessel information. Confirm GPS, antenna, display, power supply, wiring, programming, regional requirements, and marine AIS transceiver compatibility before installation.
What does 5W SOTDMA mean?
5W SOTDMA identifies the listed AIS transmission power and organized time-slot access method. Confirm the applicable regulatory classification, antenna installation, GPS source, display connection, vessel programming, and power supply before commissioning this Class B AIS transceiver.
Does it include an antenna?
Confirm package contents before purchase. The supplied title identifies the B951 transceiver but does not state that a GPS or VHF antenna is included. Verify antenna requirements, splitter, cable, display, battery, wiring, and programming before operation.
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