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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.**

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\u00c3\u0082\u00c2\u00ae bracket system to have you up and running in no time at all.

Features:

Certified AIS Class B \u00c3\u00a2\u00c2\u0080\u00c2\u0093 2W CSTDMA
Global certification - USCG / FCC / Canada / Europe
SRT-AIS\u00c3\u00a2\u00c2\u0084\u00c2\u00a2 Transceiver Engine for superlative proven performance
FLEXI-FIT\u00c3\u00a2\u00c2\u0084\u00c2\u00a2 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 \u00c3\u00a2\u00c2\u0080\u00c2\u0093 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\u00c3\u0082\u00c2\u00b0C to +55\u00c3\u0082\u00c2\u00b0C
Storage temperature: -25\u00c3\u0082\u00c2\u00b0C to +70\u00c3\u0082\u00c2\u00b0C
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\u00c3\u00a2\u00c2\u0084\u00c2\u00a2 mounting bracket
Complete with screws & optional fixing tape

Condition:	New
Brand:	em-trak
Manufacturer Part Number:	430-0001