![em-trak B921 Class B AIS Transceiver - 2W CSTDMA [430-0001]](https://cdn.shopify.com/s/files/1/0855/3916/0358/files/98701XL.jpg?v=1706863115)
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Description
em-trak B921 Class B AIS Transceiver - 2W CSTDMA [430-0001]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.** Click here to download form. The B921 is a 2W CSTDMA Class B AIS transceiver, delivering em
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® bracket system to have you up and running in no time at all.
Features:
- Certified AIS Class B – 2W CSTDMA
- 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
- 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°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): 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™ 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 8"L WT: 1.55 lbs
- UPC: 672975210502
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 15 reviews
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Product Reviews
★★★★★ 5
Real steel pipe
Size: O Desk Unfinished 3/4-in and 1/2-in
This pipe table leg set was great. It's real steel pipe like from the hardware store. It does have a layer of oil on it so that must be stripped using dawn or some other degreaser before handleing and painting. It is also offset in the middle bar so if you use it as a desk you get more leg clearance. I used it as a table base so I bought matching middle braces to set the middle support in the center of the table. Once together it looks great. I highly recommend getting this if you want a good quality pipe base.
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Reviewed in the United States on May 11, 2023
★★★★★ 5
Price / Quality - Office Desk - Perfect
Size: H Desk Unfinished 3/4-in and 1/2-in
Purchased two sets to create a custom L shaped desk for the office. Placed a pine stained top. Perfect to handle a monitor, multiple laptops, normal office equipment. Extra benefit is the cross piece at the bottom as a foot rest. Very sturdy while sitting on carpet. Compared to normal pipe material purchased in large box store -- could not have asked for a better product for the price. Looking at other products for additional projects for around the house for the product and vendor. - Highly Recommend.
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Reviewed in the United States on April 27, 2021
★★★★★ 4
Fantastic style, good stability, customizable finish, and great customer service
Size: M Desk Unfinished 3/4-in and 1/2-in
Put this together in about April 2020 right about the crazy lockdown/quarantine/work-from-home timeframe. I knew that I wanted a simple hardwood desk with no drawers or stuff below the top. I have an ergonomic keyboard tray that I have attached to all my work desks for many years now, and it was too long for my old home desk, which was also made of MDF and was falling apart. Boo.
Enter this kit plus a butcher block top from the big box store. This kit went together easily. I had lost the instructions but a quick email to the JS Supplies company, and they hooked me up. By the time they sent it, I had actually figured out the part that was puzzling, which was what the all-thread pieces were for (the couplers between the elbows and the flanges on the top side).
I degreased all the parts with a simple Simple Green-type solution diluted in a 5 gallon bucket. I then sprayed the pieces with a satin nitrocellulose laqcuer (Minwax brand that I got from the home improvement big box). Worked great. I thought about doing a sealed rust finish using a science project volcano--vinegar and baking soda for a quick layer of rust on the outside--but I decided against it, as I wasn't sure of how stable the final product would be, even after a clear spray finish. The satin nitro finish looks great without even looking like a finish. I also coated the pieces with paste wax after the finish dried, just for good measure.
The one thing that is a bit disappointing is the stability... WITH MY TOP, mind you.I should be clear that the top that I'm using is a 1-3/4" thick monster piece of birch butcher block that is 60" x 30". I'm guessing that it's 40-50 pounds? Maybe more. This is probably WAY more weight than this leg set is made for. I also have the aforementioned keyboard tray that sticks out (torque equals force times lever arm) and causes even more torque. I get some shaking with the top with this setup. I have the desk on carpet; I was concerned that maybe the carpet and pad were not giving enough stability with the feet, so I made some plywood platforms for the feet. I also carefully leveled the feet to make sure it wasn't just uneven legs that was causing the instability. Still shakes no matter what I tried.
I think it's just that I have such a heavy top--more than this thing is spec'd for. That's totally fine, and I don't want to knock off a bunch of stars for that. I leave these comments more as a "don't do what I did" thing. Just be advised that you need to limit the weight of the top to something reasonable.
The design of one upright on each side of the desk with a pipe coupler in between is probably the weak spot with my heavy desktop; I'm thinking of either adding tension on either side (with some threaded rod and turnbuckles) or some extra supports with something like the Steel-Tek pieces from Lowe's.
Overall, I'm very satisfied with the product and the company!
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Reviewed in the United States on June 23, 2020
★★★★★ 5
So nice I bought twice!
Size: H Desk Unfinished 3/4-in and 1/2-in, Size: H Desk Unfinished 3/4-in and 1/2-in
For starters, this is a great buy if it is exactly what you want. For me that was the case and it would have cost me a good $40 or more to replicate it at a big box store. With that said, if you are not planning on using all of the pieces and want a different configuration, this may not be the kit for you. All of the parts inside are just like if you bought it at a local home improvement store. All the pipes need to be cleaned and protected. I personally found that dish soap (dry off immediately after you clean a piece) was the easiest to clean everything and I finished it with some wax. The kit is sturdy and easily supports the weight of my butcher block tops. I inverted the kit as it is designed as I intend on adding a shelf and am planning on using the support brace to aid in holding that shelf up for cable management. After cleaning and protecting, putting the kit together only took 5-10 minutes and that was with kid disruptions. I purchased 2 so that my wife and I could have matching desks in the office and I couldn't be happier.
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Reviewed in the United States on August 23, 2019
★★★★★ 5
Durable and sturdy. I bought two
Size: H Desk Unfinished 3/4-in and 1/2-in
Love the kit. I ordered two to make an L-shaped desk for my home office. Perfect height, looks cool, and sturdy. Slightly tricky to get two of them to the exact same height but you can adjust them buy loosing/tightning parts. Way cheaper than going to the hardware store and buying the same parts. I wiped each piece down as they are a bit dirty/greasy, but no big deal.
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Reviewed in the United States on August 9, 2021