Thursday, December 11, 2025

Hm, I see Surly's having a sale.


If you're looking, Surly's got the older model (like mine) Stragglers on a 20% off sale:
Availability is short, so shop fast.  And of course, you can just get the newer model – you know, the one with the thru-axle hubs – for a tad more.  Worth it?  Eh, that's up to you.  The geometry on the older model is more road bikesque, but the newer one does have the thru-axles and hydraulic disc brakes.

Anyway, (a) you can't have mine!

and (b), the Specialized gravel bike is still up for sale.  I'll take $450; contact me in any of the usual ways.

I'm gonna go adjust my front brake now.  Mechanicals, they're cool and have a certain funk-factor, but yeesh.

Wednesday, December 10, 2025

A DIY 'News Cruiser' Radio Setup


Jock Elliot over at The SWLing Post has come up with the concept of having a set of pre-programmed news stations in one or more at-hand radios in this article for gray sky days.  Great idea!  You go read now; I'll wait.

OK, you're back.  Here's a list of links mentioned in the article and in the comments.
Because no blog post is truly complete without a graphic – oh, and I need a reminder to write some of this down – here's a map of the US's PEP stations:


Finally, while I was writing this post I had to look up the definitions of Blue Sky / Gray Sky conditions in the context of emergency management.  These in a nutshell correspond to "normal times" and "disaster conditions."  Along the way I stumbled across one more term, Black Sky Event.  Hoo boy.  Zero stars, would not recommend to friends.

Tuesday, December 9, 2025

Just Some Random Stuff


Random numbers have figured highly in my work for decades, but I've never had a really great random number generator at hand.  Oh, the ones out of Numerical Recipes have usually been more than adequate, but not provably adequate.  Now however, there's this...
  • CURBy – the University of Colorado Randomness Beacon project
  • Abstract on Bell-certified quantum random number generation
Probably more random than you bargained for!

Sunday, December 7, 2025

QRPer Interview on Hurricane Helene, Radios, & Muddling Through


In this radio show / podcast, Thomas Witherspoon from the QRPer blog discusses his family's experiences in Hurricane Helene, solar power at their home, and of course, the utility of ham radio, all in generally accessible terms.  Length is a little short of one hour, so it's an easy listen.

Saturday, December 6, 2025

Holman on Deep Tech – Pretty Wild Stuff


Back in September Jim Rutt posted an interview with Pablos Holman on the topic – and his new book – on what he terms deep tech.  Holman's central thesis is that we've gone too far down the software road, and while it's been a good road, we need to concentrate more on hardware and, you know, actually building cool stuff.  Autonomous shipping, mosquito-zapping lasers, safe nuclear reactors, high-speed rail, the list goes on.

And he does have a valid point.  In a 100 trillion dollar world economy, less than 5% is in the computer tech sector.  However it somehow vacuums up the lion's share of talent, venture capital, and press.  [Side note: I think a lot of reason tech has thrived over the last half-century is that it's largely immune to regulation and ignored by regulators.  Try to build a new computer operating system and The Man don't care; try to build a new type of trebuchet or nuclear reactor or choo-choo train and The Man will definitely inquire.  Close rant & back to the subject at hand.]

Some parts of both the interview and book come off as eccentric and out of touch with real developments in the real world these past few decades.  Take shipping for example.  Yes, cargo ships are still largely operated by humans.  However the number of crew required to run a ship is a fraction of what it was 75 years ago.  More importantly, containerized shipping has radically slashed port handling costs.  Overall cargo shipping costs have dropped by something like 90% since 1950.  Yes, there are always optimizations remaining, but come on, apply a generalized version of Amdhal's Law to the situation and give the industry another decade to catch its breath.  Dropping the remaining crew of ten to just one is insignificant when compared to what has just happened.

On the other hand, the guy was there at the start of Blue Origin, which just racked up a major success.  Furthermore, rocket boosters dropping out of the sky and landing on robotic barges has become something of an everyday occurrence.  Clearly it pays to think big, and especially in terms of making a profit.

Well, listen to the podcast interview (link above), read the guy's book, flip through the online footnotes for the book, then make up your own mind.  My take here is that, despite some weird twists and turns, the guy's onto something.

Friday, December 5, 2025

USB Port Color Code


Article over at ZDnet.  Huh, I did not know that there even was a code.

In case that link ever evaporates into the aether, here's the main part:

  • Black: Denoting USB 2.0, this is the second most common you'll see on devices of all types, supporting speeds of up to 480 Mbps.
  • White: These are first-generation devices -- USB 1.x -- with the slowest potential transfer speeds that don't typically exceed 12 Mbps. They're also some of the most common, found on devices that don't require data transfer or high power delivery.
  • Yellow: These ports can support either USB 2.0 or 3.0, and are "always on", meaning they can supply power even when the device they're connected to is off.
  • Orange: Like yellow, but with support for USB 3.0. Always on. You might see these on your pair of headphones.  
  • Blue: Supporting USB 3.0 SuperSpeed technology and above, blue ports identify a device capable of fast data transfer: up to 5 Gbps (that's 5,000 Mbps) -- a significant jump from previous generations. Besides laptops, you'll see blue ports on thumb drives and external storage.
  • Teal: Just like blue, but denoted as USB 3.1, supporting faster transfer speeds of up to 10 Gbps.
  • Red: These are the newest and fastest devices available, categorized as USB 3.1 Generation 2 and USB 3.2. They support another significant increase in data transfer speeds -- up to 10-20 Gbps. Red USB ports are also always on.
Yes, blogging has been light lately.  Working on that part.