Milltech Marine News

June 2023

Any questions about what AIS you should get?

Our AIS Comparison guide is an quick and easy way to sort through the marketing fluff and find the unit that fits your needs best. It has been updated for 2023 and can be found on the AIS Transponder product page or link directly here.

March 2023

Vesper Marine Cortex Gets Long Awaited Software Update

Cortex just got even better. Introducing the new and improved Cortex 2.0 software update. There's a new sleek user interface for Cortex handsets and some big improvements to core VHF functions to ensure you never miss a word. Cortex software 2.0 features new Squelch EQ

automated squelch with manual fine-tuning, omni watch multichannel scanning, and VHF audio recording and playback. Find out more here.

Same-day Shipping
If placed by 3:00PM EST, Monday through Friday, most orders ship same-day (excluding domestic Class B AIS which must be programmed before shipping).

We Ship Internationally
Use our online Shopping Cart to make sure your location is served and to check shipping options and costs. For more information, click here. Please call or email with any questions.

em-trak B924 Class B CSTDMA AIS Transponder with Integrated Splitter, Wi-Fi and Bluetooth

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Your Price: $1,070.00

Retail Price:$1,189.00

Your Savings:$119.00(10%)

The B924 is standard transmit power (2W CSTDMA) AIS Class B transceiver, with integrated GPS receiver, antenna splitter plus Wi-Fi and Bluetooth support. Each transceiver is ruggedized, water and weather proof (IPx6 & IPx7) and include a FLEXI-FIT bracket system for quick and secure installation. Integrated VHF antenna splitter. Wi-Fi and Bluetooth support

Questions about this item? Ask here.

Part Number: ET-430-0007

Availability: In Stock

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Customer Reviews
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Quick & Easy Online Form

Free Class B AIS Programming

FCC regulations require Class B AIS units to be programmed with MMSI and vessel information before shipping to US addresses. Milltech Marine provides this service free of charge.

Common Questions About MMSI

To make it more convenient for you to provide vessel information, we have prepared this quick and easy online form. Please complete and submit at time of order.
We are required to have proof of valid MMSI, so please also send a copy of the issuing document.
If you do not have a copy of your MMSI assignment, contact the issuing authority or organization. To search the FCC licensing database, click here. For BoatUS information, click here.
Go here if you do not have an FCC Ships Station License and MMSI and wish to obtain one.

The B924 is a standard transmit power (2W CSTDMA) AIS Class B transceiver that is small, light-weight, yet delivers the very best AIS receive and transmit performance so you see more AIS information and targets at maximum range – all achieved with the least power consumption.

The B924 combines WiFi & Bluetooth for seamless wireless connectivity and AIS data streaming to any mobile device or PC as well as an integrated VHF antenna splitter which enables the transceiver to share your existing VHF antenna without any loss of performance. With built in intelligent connectivity, integrated next-generation GPS receiver and antenna and a unique FLEXI-FIT® bracket system, safe and secure installation is simple.

Standard transmit power AIS Class B Transceiver
Delivering the very best AIS performance and connectivity
Built-in Intelligent Connectivity
Integrated VHF Antenna Splitter
Integrated next-generation GPS
Integrated Wi-Fi and Bluetooth support
Unique FLEXI-FIT® bracket system, safe and secure installation could not be easier.

CORE TECHNOLOGY | Performance

Core technology continuously developed and proven over many years guarantees you the very best AIS receive and transmit and GPS performance, coupled with the lowest power consumption of any comparable AIS transceiver.

QUALITY ENGINEERED | Reliability

Quality engineered and manufactured with the best components to provide years of continuous, maintenance free operation in even the most extreme environments – impervious and protected against the long-term effects of water, damp, shock, vibration and extreme cold and heat.

PLUG & PLAY | Connectivity

Guaranteed connectivity to any chart-plotter and PC/Phone/Tablet/Watch and navigation app. This ensures you are not limited to any display device or navigation application now or in the future and can maximize AIS related functionality such as weather, MOB, anti-collision, anchor safety, vessel tracking and more.

EASY INSTALLATION

With features such as FLEXI-FIT bracket, integrated GPS antenna, VHF antenna splitter and unlimited connectivity options such as NMEA2000 & 0183. em-trak AIS transceivers are easy to configure and install on any boat.

GLOBAL COMPLIANCE | Certification

em-trak transceivers are rigorously tested and certified for global regulatory compliance. This includes FCC, USCG, Canada and EU test and certification.

24/7 CUSTOMER SUPPORT | Warranty & support

em-trak transceivers are designed and engineered for a life time of reliable operation in even the most extreme environments. This is supported by our best in class global warranty program with 24/7 customer support.

Q: Will this provide the GPS signal needed for Navionics on a wifi-only iPad?

Asked by: Brent - 4/29/2021

A: Yes, once the iPad has has joined the B924 WiFi network and you have setup Navionics with the correct IP address and port, it will send both AIS and GPS data to the iPad. If there are issues, be sure to check that GPS sentence output is on.
Also see out article here: https://www.milltechmarine.com/Using-the-wireless-features-of-the-new-em-trak-B900-series_b_38.html

Was this answer helpful? 6 of 7 Customer(s) found this Answer helpful.

Answer provided by: Doug Miller (4/29/2021)

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Q: The pictures of the B924 only show ONE vhf coax antenna connector, and one for the GPS antenna. It seems to me for this unit to have an integral splitter it needs a second vhf coax connector... on to go to the antenna, and one to go to the vhf radio. Please explain. ?

Asked by: Ray Sirois - 5/17/2021

A: For the B900 units with integrated splitters, you are right. There are two SO239 connectors on the back. One for the inbound VHF antenna connection and the other connects to the short cable going to the radio. The picture is the generic B900 picture. The manual show this clearly.
https://www.milltechmarine.com/customer_center/B900-SERIES-USER-MANUAL.pdf

Was this answer helpful? 4 of 4 Customer(s) found this Answer helpful.

Answer provided by: Doug Miller (5/17/2021)

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Q: Can the B924 work with Furuno VX2-NavNet ethernet system? That is, can it be equipped with a cable that will plug into the ethernet hub? Thank you

Asked by: Tom - 8/15/2020

A: No the WiFi networking on the B924 cannot be used with the Furuno ethernet system to send AIS data. You would interface the two using the NMEA 2000 network or NMEA 0183 direct connection.

Was this answer helpful? 2 of 2 Customer(s) found this Answer helpful.

Answer provided by: Doug Miller (8/15/2020)

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Questions about this item? Ask here.

PHYSICAL AND ENVIRONMENTAL SPECIFICATION
Size (w x h x d mm) – 150 x 115 x 45
Weight – 425g
Operating temperature – -25°C to +55°C
Storage temperature – -25°C to +70°C
Ingress protection – IPx6 and IPx7

ELECTRICAL SPECIFICATION
Supply voltage – 12V or 24V DC
Supply voltage range – 9.6V – 31.2V DC
Average current (at 12V) – 280mA
Average current (at 12V) (wireless off) – 245mA
Peak current – 2A
Average power consumption (at 12V) – 3.4W
Average power consumption (at 12V) (wireless off) – 2.9W
Galvanic isolation – NMEA 0183 inputs only, NMEA 2000, VHF antenna port

CONNECTORS
VHF antenna – SO-239
VHF radio – SO-239
GNSS – TNC
Power/NMEA 0183/silent mode – 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 – NMEA2000 Ed 3.101, LEN=1
USB – PC virtual com port for NMEA0183 data
Wi-Fi – IEEE 802.11 (a/b/g), client and access point mode supported (2 connections in access point mode)
Bluetooth – BT Classic 4.0, 7 concurrent connections

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 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

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em-trak B924 Class B CSTDMA AIS Transponder with Integrated Splitter, Wi-Fi and Bluetooth

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