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Description
em-trak B921 Class B AIS Transceiver - 2W CSTDMAB921 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
Manufacturer : em-trak
Manufacturer Part No : 430-0001
UPC : 672975210502
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4.7 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
Hustle is dumb; slowing down is smart
Format: Kindle
I very much liked the message of this book. I didn’t like the execution of providing the message very much. There were good and bad things about both the message and execution, but good ones carried much more weight.
But, I will traditionally start from some…
CONS
1. Jokes.
That’s the minor CON. Some of them were really lame. Dry like a desert. But some of them cracked me up too. I guess, you cannot win them all, right?
But there is an underlying issue here too. Check out CON #3.
2. Overly Spiritual.
That’s nitpicking, I know. This is a book written by a pastor for Christians. It should be spiritual and it serves this crowd.
However, I hate the fact that people who need this message the most, luke-warmed Christians and secular people, will miss out on this. The ruthless elimination of hurry helps you become a better human being, not just a better Christian.
I’m a Christian, and I always try to mix both spiritual and secular tips in my texts, so the majority of the population will not be left out.
On the other hand, I guess none of this makes deep sense if there is not a loving God who knows what’s good and bad for us. You can go through the motions, but if you don’t see the meaning, will you even bother to go through the motions?
As I said, pure nitpicking.
3. Language, Please!
But I fully agree with the current top review of The Ruthless Elimination of Hurry on Amazon: the language is dumbed down and this does the book a great disservice. Seriously, I love self-published books for the personal tone and personal stories. But if the personal tone becomes a colloquial one, especially tackling such a serious subject matter… Ouch.
That severely spoiled my reading experience. Still, I highlighted a lot of passages and devoured the book. It taught me something. It reinforced or articulated a lot of what I already knew. But the sour taste remained.
Definitely, The Ruthless Elimination of Hurry is not a perfect book. But it is a very good one. Here comes the plenty of…
PROS
1. The Origin Story.
For me, it set the stage for the whole book. But the advice from Comer’s mentor, repeated word by word, when asked about spiritual progress?
Plus, John’s struggles with keeping his sanity in the hurry of the everyday life made the whole book relatable for me.
It was a perfect way to start the book. Big kudos for that.
2. Sabbath.
I’m a guy who has been practicing Sabbath for 25 years (since I was 17 years old). I never grasped completely where it comes from. I was simply obedient.
Not zealous; my line of work (IT support of 24/7 systems) demanded attending some emergencies and scheduled maintenance on Sundays. But I always had the gut feeling it’s extremely important to stick to the Sabbath practice.
Even during my university studies, I must have been really pressed (the final attempt to pass an exam) to study on Sunday. When I had the chance to stray away from the projects that needed occasional work on Sundays, I jumped on it.
However, only by reading The Ruthless Elimination of Hurry did I realize what Sabbath really provides:
the Sabbath — just like an animal or a human being — has the life-giving capacity to procreate.”
I knew the Ten Commandments by heart, but the Catholic version of the Sabbath commandment (in teaching, not in the Bible) is severely abbreviated: Remember the Sabbath day and keep it holy. I never paid attention to the whole placement of the commandment.
What penetrated my awareness was probably quoting the percentages:
If you were to configure Ten Commandments as a pie chart, this one would take up over 30 percent of the pie.”
I’m a numbers freak. I know what they mean, like normal people know what words mean. The third commandment is utterly important. The author’s line of reasoning convinced me completely. I was ready to accept that the Sabbath is life-giving.
3. The Message.
Like most people nowadays, I stuffed way too many tasks into my days. Almost exactly two years ago, a friend challenged me to dedicate half an hour a day for physical activity.
I had to force myself to carve out those 30 minutes a day. It helped me immensely in keeping a sane mind among the multitude of things I do on a daily basis (writing, coaching, a day job, book advertising business, three masterminds, etc.). It saved my mind when I was in the thick of the COVID-induced brain fog for three months.
Also, around the same time I started tracking my work time. I had been working 4–6 hours a day (apart from Sundays, of course). And my income didn’t fluctuate much. Creating time for walks and bike rides also created a mind space for me.
I think this is a good illustration of what eliminating hurry out of your life does. Comparing to most corporate workers, I work at a leisurely pace. And I’m making more money than my director in PwC who has 60+ people under her chain of command.
I’m talking money here because that’s the main illusion in hurry’s favor — that by doing more and faster you can have more. Yes, you can, but it’s not a guarantee. You can have “much” by working 4–6 hours a day.
That’s just tackling the carnal part of things. When it comes to the spiritual realm, hurry gives zero return. In fact, it’s a hurdle.
I pray, meditate, read and journal for about two hours a day, and I’ve been doing that for years. This is the sole reason I could hustle for years and didn’t ever burn out. There were a few occasions where I was close to a breakdown, but I always had space in my days reserved for God and relationships; that saved me.
Oh, and I didn’t just survive. I made a lot of progress. And that’s my point. You don’t need to hurry up to grow. You need to slow down. Comer articulates it aptly in his book.
4. 20 Practices to Slow Down.
That was the best part of the book, in my opinion, because it was the most practical. I’m a down-to-earth kind of person. Deep philosophical ruminations are fine and good, but if they don’t translate into concrete daily actions, I just don’t hold them in high esteem.
The practices John enumerated are clear, precise and taken from his experience. You can take them and apply immediately.
And they are so challenging! Seriously, remember this comes from a guy who spends over 2.5 hours a day on intentional slowing down. I’m on the same page as the author, yet I found most of those disciplines extremely challenging. Also, several of them apply directly to mobile phones. I thought I made a good job of using my smartphone as a tool, but reading through those tips, my complacency evaporated.
Anyway, I think this one chapter is worth the book’s price.
5. Deep and Profound.
Despite “dumbing down” the language, The Ruthless Elimination of Hurry is still a very deep book. And from time to time, some sentence would hit me like a ton of bricks. A few reflections:
It’s wise to regularly deny ourselves from getting what we want, whether through a practice as intense as fasting or as minor as picking the longest checkout line. That way, when somebody else denies us from getting what we want, we don’t respond with anger.”
Well, John is more of a saint than me. Too often, I do respond with anger. But he is right that asceticism builds barriers between the impulse and the automatic reactions. I’ve never thought of my ascetic practices that way, but I agree 100% with the above passage.
We achieve inner peace when our schedules are aligned with our values.”
Well said, indeed! We regret doing things or not doing them exactly because they are out of sync with our values.
I like cleaning a kitchen from time to time to express my love for my wife. But I cannot fully replace her in this task because then I would scramble to find time for writing. Putting bread on the table is as important as cleaning, and it is my task in our household.
When I regret that I binge-watched a TV series or YT channel, it’s because I didn’t align my actions with my values.
Now, I seriously think I should have a closer look at my schedule and determine what’s aligned with my values in it and what is not.
Life is right under our noses, waiting to be enjoyed.”
Hurry literally robs me of my life. If I don’t take time to enjoy my life, but chase the next shiny object, how would I ever enjoy my life? Pausing the race is a necessary prerequisite for enjoyment.
SUMMARY
The Ruthless Elimination of Hurry is not perfect. It’s too often snarky and ironic. Yet, it’s profound and mmarydeep at the same time. Writing a book with all of those characteristics is an art I appreciate.
The ‘youth’ language and lame jokes spoiled my reading experience a bit, but just a bit.
The Bible analysis? Superb. I’ve been studying the Bible for decades, and still I learned something new.
The how-to of slowing down the modern life? Superb. Challenging even for a guy like me who uses the technology as a tool, not an entertainment.
Overall impression? Superb.
Read this book.
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Reviewed in the United States on October 3, 2021
★★★★★ 5
Slowing Down to Unlock the Power of Spiritual Discipline
Format: Kindle
In his compelling book, "The Ruthless Elimination of Hurry," John Mark Comer presents a powerful case for slowing down and embracing spiritual disciplines as a means to access the transformative power of the Holy Spirit. As a fellow Jesus follower, I found Comer's insights to be both convicting and inspiring, urging me to reevaluate my own priorities and pursue a deeper connection with God.
One of the book's central themes is the idea that spiritual disciplines like prayer and fasting require great intentionality and commitment, but they also unlock a source of power that is otherwise inaccessible to us. Comer argues that by creating space for these practices in our lives, we open ourselves up to the work of the Holy Spirit, who empowers us to live with greater purpose, peace, and spiritual vitality.
This message struck a chord with me, as I have often struggled to maintain a consistent rhythm of spiritual disciplines amidst the demands of my roles as a CEO, dad, and technology enthusiast. Comer's words serve as a timely reminder that neglecting these practices can lead to a sense of disconnection from God and a lack of spiritual power in our lives.
As I reflected on the book's content, I was reminded of Jesus' teaching that some demons can only be cast out through prayer and fasting (Mark 9:29). While Comer does not specifically reference this passage, I believe it affirms the book's underlying premise—that there is real spiritual power to be found in the disciplines of prayer and fasting, power that enables us to overcome the challenges and obstacles we face in our lives.
"The Ruthless Elimination of Hurry" is more than just a call to slow down; it is an invitation to pursue a life of deep intimacy with God and to experience the transformative power of the Holy Spirit. For anyone who has ever felt too busy to prioritize their spiritual growth, this book offers a compelling vision of what is possible when we ruthlessly eliminate hurry and make space for the things that truly matter.
If you are looking for a book that will challenge you to reconsider your priorities, deepen your faith, and experience the power of spiritual discipline in new ways, "The Ruthless Elimination of Hurry" is a must-read. Comer's insights and practical guidance will help you cultivate a life marked by greater purpose, peace, and spiritual vitality.
Sources
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Reviewed in the United States on April 24, 2024
★★★★★ 5
Christian thoughts on reducing worry. Very Good.
Format: Hardcover
Beautifully written for the common person. Christ-based.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
YES YES YES ...
Format: Hardcover
The message and encouragement in these pages are for a thoughtful read and read-again. It has helped me understand and pursue an unhurried being, care for my soul enriching my relationwith with God, others and myself. Hint: It's not about time management or eliminating calendar commitments; can be but it's more than that, it is care of one's soul before God. This book has focused me .... as I said, it's a read and listen once twice thrice kind of book. Much to savor.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Excelente
Era lo que esperaba
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Reviewed in the United States on April 5, 2026
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