Whether you’ve been following Retrotechtacular for a while or have firsthand experience with the U.S. Army, you know that when they want to teach something to a someone, they’ll get the job done in spades with a side of style. The era between WWII and the Vietnam War was a golden age of clear, simple instruction that saw the Army use memorable material to teach a wide array of topics. And speaking of golden ages, the Army found success with comic book-style instructional magazines drawn chiefly by [Will Eisner] of Spirit fame.
The first of these rags was called Army Motors, which premiered in 1940. It introduced several memorable characters such as a Beetle Bailey-esque bumbling soldier named Private Joe Dope, and no-nonsense gal mechanic Connie Rodd, a sharp cookie who’s as brainy as she is buxom. Educational and entertaining in equal parts, the magazine was pretty well received.
Its successor, known simply as P.S. started its run around the beginning of the Korean War in June 1951. These magazines were intended as a postscript to the various equipment maintenance manuals that soldiers used. They offered all kinds of preventive maintenance procedures as well as protips for Army life. The eye-catching depictions of Connie Rodd demanded soldiers’ attention while the anthropomorphic equipment illustrations encouraged them to listen to what their equipment told them.
Additional artists including [Joe Kubert] and [Dan Spiegle] were brought in to produce P.S. on a monthly basis. As the years marched on, the magazine’s character base expanded to include representatives of other military branches solving specialized problems. The bumbling idiot types were 86’d pretty early on, but cheesecake was served well into the 1970s.
Did we mention that they’re still making P.S.? Here’s the February 2015 issue and a friendly PDF warning.
Thanks for the tip, [Itay]!
Retrotechtacular is a weekly column featuring hacks, technology, and kitsch from ages of yore. Help keep it fresh by sending in your ideas for future installments.
It’s hard to beat this vintage reel for learning about how vacuum tube amplifiers work. It was put together by the US Army in 1963 (if we’re reading the MCMLXIII in the title slide correctly). If you have a basic understanding of electronics you’ll appreciate at least the first half of the video, but even the most learned of radio enthusiasts will find something of interest as they make their way through the 30-minute presentation.
The instruction begins with a description of how a carbon microphone works, how that is fed to a transformer, and then into the amplifier. The first stage of the tube amp is a voltage amplifier and you’ll get a very thorough demo of the input voltage swing and how that affects the output. We really like it that the reel discusses getting data from the tube manual, but also shows how to measure cut-off and saturation voltage for yourself. From there it’s off to the races with the different tube applications used to make class A, B, and C amplifiers. This quickly moves onto a discussion of the pros and cons of each amplifier type. See for yourself after the jump.
Continue reading “Retrotechtacular: Tube Amplifiers”
We’re not sure if this is the first time, but here’s some pretty solid proof that Arduino has found its way into the weapons of war. The creators, [Derek Wales], [John Eischer], and [George Hopkins] are all Electronics Engineering majors at West Point. They came up with this idea after seeing video footage of a firefight in Afghanistan where combat soldiers were calling in artillery strikes using a compasses and GPS devices. It’s an all-in-one unit that can provide the same information quickly and accurately. The prototype above, which they call the DemonEye, contains a laser range finder, digital compass, and a GPS module. The article also states that it contains a mini-computer but we recognize that as an Arduino Mega (thanks to Miguel over at Areopago 21 for noticing this first and sending in the tip about it).
The prototype apparently comes in at $1000. Okay, it seems a bit high but not out of the ballpark. What we can’t understand is how the second generation of devices was billed out at $100,000 for five more units. What’s the going rate for laying out military-grade PCBs?