![em-trak B924 Class B AIS Transceiver w/WiFi, Bluetooth VHF Antenna Splitter - 2W CSTDMA [430-0007]](https://cdn.shopify.com/s/files/1/0538/9769/1296/products/98704XL.jpg?v=1678770128)
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Description
em-trak B924 Class B AIS Transceiver w/WiFi, Bluetooth VHF Antenna Splitter - 2W CSTDMA [430-0007]B924 Class B AIS Transceiver with WiFi, Bluetooth & VHF Antenna Splitter 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 most feature rich
B924 Class B AIS Transceiver with WiFi, Bluetooth & VHF Antenna Splitter - 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 most feature-rich 2W CSTDMA AIS transceiver in the B900 range. The B924 includes WiFi & Bluetooth for seamless wireless connectivity and AIS data streaming to any mobile device, PC, or wearable, with an integrated VHF antenna splitter to enable your transceiver to share your existing VHF antenna without any loss of performance. Like all B900 transceivers, it also includes an integrated next-generation GPS receiver and antenna and is designed for em-trak's unique FLEXI-FIT® bracket system to make installation as easy as possible.
Exceptionally lightweight and completely weatherproof, the B924 delivers the very best (2W) AIS receive and transmit performance, so you see all AIS information and targets, even at maximum range. Your transceiver will also work with our CONNECT-AIS mobile phone app to make programming, configuration, and transceiver health monitoring simple and convenient.
Features:
- Certified AIS Class B – 2W CSTDMA
- Integrated WiFi and Bluetooth
- Integrated VHF antenna splitter
- 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
- Guaranteed connectivity and interoperability with any app, chart plotter, smartphone, tablet, or PC
- 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: 425kg
- 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): 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: 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
- WiFi: 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 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 VHF radio accessory cable
- 1 x FLEXI-FIT™ mounting bracket
- Complete with screws & optional fixing tape
Specifications:
- AIS Class: B
- Antenna Included: Yes
- Display Included: No
- Function: Receive/Transmit
- GPS Included: Yes
- Box Dimensions: 6"H x 7"W x 7"L WT: 2.25 lbs
- UPC: 672975210533
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:
- 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
4.6 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
All in all, it's great value.
Color: A-Brushed Silver, Color: A-Brushed Silver
This coffee machine exceeded my expectations in every way. The stainless steel construction makes it sturdy and durable. It heats up quickly, brewing coffee at the perfect temperature for a smooth and balanced taste. I love that it runs quietly and doesn't take up much space. The water tank is easy to refill, and the filtration system is highly efficient. Cleaning is also simple, which is very important to me. It's an excellent choice for both coffee beginners and experienced coffee lovers.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Actual espresso! Great as a backup or for vacation home or hotel room.
Color: Anti-Fingerprint Silver
I'm an experienced (20+ years) home barista. But my Italian "prosumer" machine (Andreja Premium) is in the shop for new gaskets & gauges, and I have no real backup. Nespresso is easy to use but not true espresso--looks good but not espresso flavor; adequate with Aeroccino to make fake cappuccino. Tried the "inverted Aeropress" hack. Nope--strong black coffee but still not espresso. My old camping Handpresso+Illy pod? My arms ache from pumping and barely any crema till end of brew--spewed all over the sink.
This java junkie needs her 'spro! Found myself standing in Target staring at a Breville Bambino...for $200? $50 steam toys? Been there, done that. Saw this surfing Amazon, and thought "for just one Benjamin, why not?"
Arrived overnight. Surprisingly sturdy, easy setup. Not used to tiny (51mm) portafilter (which the manual calls a "funnel" and is taller than my pro 58mm portafilters) but I also have a good wood&steel tamper I bought for my first Krups pump machine 40 yrs ago. (The plastic one with the scoop at the end in the box makes a great cat toy). Filled it, did a cleansing steam wand "purge" per the easy to follow instructions on a sticker on the side of the machine. Ground some Metropolis "Red Line Blend" espresso beans. First try "choked" the machine so I ground a bit coarser. Hit the button and...OMG! Real espresso! Flowed out in rusty brown "monkey tails!" Medium brown crema! Piping hot! Tasted it and OMFG! It's the real thing!
Noisy, but so are all true vibe-pump espresso machines. Only reason to remove a star was that the puck is wet and takes several slams against the bar of my knockbox to dislodge the grounds. The espresso it makes is nearly as good as what came out of my Andreja Premium (which demands careful dialing-in, WDT stirring, leveling and calibrated tamping). Certainly better than what Starbucks serves (much less the superautomatic machines in gas station convenience stores). Haven't tried the steam wand yet, but I bet it'll make finer pourable microfoam than the stiff stuff from my Aeroccino. Maybe not latte art quality, so what? But the espresso is good enough that you'll likely want to drink it straight.
TIPS:
1. RTFM ("Read the Friendly Manual")! Keep the nice illustrated quick-start card close by.
2. Use the 2, not the 1-cup basket. Unless you're an absolute newbie, don't rely on the automatic "1-2 cup" button; rather, use the power switch (has a little "hand" icon signifying "manual") to start and stop the extraction before "blonding" (pale crema) occurs.
3. Don't grind as finely as you would for a prosumer machine, especially not a heat exchanger with an e61 grouphead. You might find that the cheaper burr grinder you use for drip or press, on its second-or-third-click-from-finest setting, works better than a commercial grinder. (Mine's a 2-yr-pld Baratza Encore, not even advertised as for espresso). A pricy hand grinder is overkill.
4. Don't tamp as hard as you would for a prosumer machine either. In a pinch, the plastic "cat toy" in the box is fine.
5. Run a couple oz. of water, w/o the portafilter in place, after you brew your shot and knock out the puck; then wipe the group screen dry.
6. To turn the machine off, press the power/manual-brew button for at least 2 seconds till the light turns off (otherwise you'll be releasing water through the group screen).
7. Use fresh beans less than 3 wks old (preferably 7-10 days post-roast date). Grind for each shot, or at least each brew session. Keep them in an opaque canister, preferably one that lets the air out but not in (the expensive mechanical twist vacuum ones are not necessary). For the love of everything holy, NOT the fridge or freezer!
THINGS YOU MIGHT WANT TO BUY: Knockbox--doesn't have to be a pricy one. (You don't want to accidentally dump your portafilter's basket into the sink or worse, the trash can or compost pail). Spend $10 or so for a good tamper. (But let its weight do the work, and don't try to spin it). WDT needle and weighted leveler tools are overkill--as is a dosing funnel if you aren't using a Mazzer grinder with a doser (Newbies--if that sounds like gibberish, you aren't using one). The manual advises against using a blade grinder (that cheap "whirly" kind better suited to spices), and recommends a "grind type mill" (i.e., a burr grinder).
Don't get me wrong--this espresso won't be "God shots," nor "Third Wave" barista champ quality, no matter how mad your skilz. But pair it with fresh beans, filtered water and a good burr grinder (Baratza Encore or better) and with a little practice you will be rewarded with the real thing! For $99--just a little more than those "steam toys" that brew into glass carafes--if it lasts me a year, I'll be delighted. I won't be giving it heavy use once my prosumer machine comes home, but it will more than just "do."
EDIT 3/23/26: Decided to try steaming milk, to see if it’s controllable for microfoam. (My Andreja Premium is too powerful—heats the milk too fast after stretching (and even 2 seconds is too long to stretch before getting thick foam). Well, it will take a little patience to wait and then bleed off some water. But it is quite gentle and controllable. Do I want to use two machines (at opposite ends of the room) to make a drink with latte art? After all its shots are not as good as from my prosumer machine, which steams too powerfully. But it DOES what it’s supposed to.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Good coffee machine
Color: A-Brushed Silver, Color: A-Brushed Silver
☕️ Very stylish and compact coffee machine!
The coffee comes out aromatic and tasty, and the milk foam is delicate and airy, like in a coffee shop. The machine is easy to use, heats up quickly and does not take up much space in the kitchen. I really like the modern design and high-quality materials. Perfect for homemade lattes and cappuccinos 🤍
✨ I use it every day and am very satisfied!
The coffee machine looks expensive and minimalistic, fits perfectly into the kitchen. The coffee is rich, and the cappuccino is just perfect. Easy to care for and convenient to use. For lovers of homemade coffee - a great purchase ☕️
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Great Coffee, Tiny Footprint!
Color: A-Brushed Silver
I love this compact espresso maker! The 20-bar pressure pulls a rich shot with excellent crema every time. The milk frother is powerful and creates perfect foam for lattes and cappuccinos. It heats up very fast, looks sleek in stainless steel, and doesn't take up much counter space. The 44oz tank holds plenty of water for multiple drinks. Highly recommend for the price
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Great espresso maker
Color: A-Brushed Silver, Color: A-Brushed Silver
I’ve been using this espresso machine for a little while now, and honestly it’s become part of my daily routine. It heats up quickly, the espresso comes out rich and smooth, and it’s nice being able to make coffee at home instead of spending money at cafés all the time. I also love how easy the steam wand is to use when I want to make lattes. Overall, it feels really sturdy and looks great in my kitchen too.
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Reviewed in the United States on May 27, 2026
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