20 July 2024

Look To The Sky

So, does anyone have a clear picture on what the root cause was with yesterday's cyber outage? Was it a bad update released by Microsoft, or was it a bad update developed by CrowdStrike to be applied specifically to their own Windows applications? The on-line 'experts' are real foggy on this. One thing's for sure - the lawyers are racking and stacking. 

Oops...

Whatever the cause, this was certainly a lesson in vulnerability and fragility. Nothing nefarious or criminal, just a few lines of 'bad' code applied during an update that shuts down the airline and banking industries (to name just two) around the globe. No explosions, no gunfire, no evil hackers sitting in a star chamber somewhere in China. Just a few lines of code, code that had probably been tested and approved on development servers before being deployed to production servers world-wide. 

With increased complexity and scale comes geometrically increased risk and vulnerabilities. There's little you or I can do to anticipate these kinds of global-level impacts. They will happen, and happen right out of the blue with no warning. But have you thought about how you would mitigate these impacts at the personal, family and community level? What is your list of must-haves? Here's a short list to consider: 
  • Reliable AC power to run things like refrigerators, home medical devices, security systems, to charge phones, computers, and power networking systems, etc.
  • Reliable phone service (cell or landline) to keep in touch with vulnerable family & friends and to issue 'safe & well' updates
  • Access to banking services, either on-line or at a local physical bank. Can you get to your money when you need it? (Although inflation chews away at it, experts recommend keeping a cash reserve on-hand to pay for things like food & fuel)
  • Internet. The internet is what ties most of what we need together. It is the backbone that powers the global economy, and it's what links you to things like local emergency services, your loved ones (via email, text and voice comms), and necessary commercial services. Just because the internet is out at your location doesn't mean it's out everywhere. The key is being able to reach beyond your internet provider's local or regional infrastructure to get to where the internet is working
My solution for many of these must-haves can be summed up in one short phrase: look to the sky!
 
We live in an era where we can easily provide for ourselves. Small scale 'shelter at home' equipment, infrastructure and services are a burgeoning business. Generators, water purification and storage systems, off-grid communications systems and more are just an Amazon mouse click away. 

The thing that concerns me the most in a grid down situation is communications. I've got generators, I've got water storage and purification, I've got security systems, I've got solar power, I've got stored food and medicine. What concerns me most is keeping in touch with my loved ones. I'm not worried  about point-to-point radio communications with other hams, I know I can do that. I'm talking about checking in with my daughters, their families, close friends and others, and the ability to reach out to emergency services. It takes some planning, but it can be done, and the answer to most of this is right over our heads. Don't think in terms of bars of signal strength, think in terms of satellite constellation coverage and radio wave propagation. Consider these options: 
  • Garmin in-Reach. Perhaps the most basic 'overhead' emergency communications system. It's a text messaging and alert system that is satellite based. Depending on the device you select (all made by Garmin) you can send and receive texts, send emergency signals (SOS), allow loved ones and emergency responders to track your location, and more. The in-Reach system has been in use for several decades now and has proven very reliable
  • Satellite Phones. More expensive than in-Reach, but the overall costs have come down quite a bit over the past decade. There are a large number of sat phone manufacturers and a wide number of service providers, but they all seem to provide the same features and functions. 
  • Satellite based internet. The big dog in this market space today is Elon Musk's Starlink. Starlink provides amazing performance, particularly when you consider service costs. It's not cheap like home internet (you have to factor in the hardware costs), but when you consider that it's an almost completely off-grid system (you still need AC to power the router and antenna) with high reliability and performance, for me it's a must-have.
  • Winlink. Winlink is really the only viable ham radio-based system that can link you with non-ham radio individuals or agencies. It allows you to send emails to anyone, anywhere, via ham radio. No license needed on their end. And it's a two-way system; email your family members regarding your status, and they can respond back using their own email provider (GMail, Outlook, etc.). While not interactive like a phone call or text message, it is still a very viable, reliable and well tested system. But to use it you need your General-class license and the right equipment, and practice, practice, practice.
The next time something like this happens (and it will happen again - we can't beat the odds) don't just stand there shouting at your cell phone that's showing zero bars of coverage. Be ready for it and...

Look to the sky!

W8BYH out

12 July 2024

NUCing Around

It's time for a computer switch-out. I needed to take one computer out of service, and that had a cascading effect. I found myself in need of a new computer that is well endowed with USB-B & C ports. Normally I'd tackle this job with a laptop and a USB port extender, but this time I decided to try something new. The concept of what Intel calls the Next Unit of Computing, or NUC, has interested me for quite a while. A NUC is essentially a mini-desktop computer. How mini? Many are small enough to be mounted directly to the rear of a stand-alone monitor. Intel didn't invent the form factor. I believe Apple was there first with their Mini Mac line, but Intel established the form factor in the Windows world. The best way to describe a NUC is that it's a laptop computer, but without the screen, keyboard, trackpad or battery - a single board computer in a small rectangular box that offers lots of ports. You bring your own monitor, keyboard and mouse to the game. A NUC is roughly 5" x 5" x 1.5", small enough to disappear on a ham shack desk, which is precisely what I was looking for. 

Interior of a NUC - a board, some memory, a cooling fan, lots of ports, and that's it!

Intel introduced the NUC back in 2012 and, as invariably happens, as soon as it gained market traction the clone manufacturers piled on. Everyone from Dell to 'China, Inc' got in the game. The competition got so fierce that Intel recently announced that they are selling off their NUC line to ASUS. Newly manufactured Intel NUCs are still widely available, but their pricing reveals a large part of why Intel got chased out of the market. The Intel units, while wonderfully made with top-tier (Intel) components, are roughly twice the price of a 'China, Inc' clone that offers better specs. Corporate America and the (dot)Gov world were OK with forking over $600 for a real Intel NUC with middling specs, but the mom & pop home owners, gamers and embedded system geeks were drawn to the far more reasonably priced clones. The price wars commenced, and the competition simply overwhelmed Intel.  

I can be heartless when it comes to computers. Like I've said before in this blog, I view computers the same way I view toasters; if it stops working it gets tossed and I get something else. However, it's rare I'll buy something new. I view buying computers the same as buying cars - I'm happy to let someone else eat the depreciation. That's why my ham shack is full of computers I've bought used. This allows me to explore the far edges of computing form factors without spending a fortune. And so it was with my new NUC. I found an eBay vendor selling used units with the specs I wanted, but for a fraction of the price of a new one.

There's really nothing much to talk about regarding the specs of this little computer. It's a run-of-the-mill Intel i5 processor unit with 8 GB or RAM and 512 GB of SSD storage. When it arrived I simply plugged in a Bluetooth keyboard and mouse, hooked it up to a monitor, re-loaded Windows 11 and loaded up some ham radio applications. No gaming, no video editing. Nothing fancy. It works just as well as the laptop computer it replaced, but frees up a LOT of desk space, allowing me to stack more ham radio junk there.

I really like this small form factor, and I'm thinking about getting a second unit for the other computer in my shack. This time I may violate my long standing rule about buying new. I'm watching some NUC clones for sale on Amazon (the brand is BeeLink), and I'm waiting to see if the price comes down at all during the upcoming Prime Day sale. That would free up an old Panasonic Toughbook for field use. Computers come and computers go here in the W8BYH shack. I think there was a song about that in a Disney movie once. Something about the circle of life...

W8BYH out