SolderSmoke Podcast #117

http://www.soldersmoke.com

In SolderSmoke 117:

24 October 2009
Climbing Monte Calvo + Horseback riding + Piggy-backs = LOWER BACK PAIN
Visit of Bob, W8SX, Soldersmoke correspondent in Dayton
AA1TJ's point contact adventures -- Backwaves and Backwash
AF Collins on Kindle -- "William" Marconi
Hans Summers and Turkish Piracy
RSGB Convention via Skype
"Air and Space" Aurora Article
My new, old Pentium III with Ubuntu (Thanks Jorge!)
Roadkill computing
CQ interviews Joe Taylor, K1JT
New Spart and new Sprat CD
AA1TJ's voice-powered transmitter (and some advice from Italy)
QSOs from Ponticelli: DK1HW/P (SOTA) and UN9GD.
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"El Silbo": Michael Rainey's Amazing Voice-Powered DSB Transmitter

Oh man, the wizard of the Vermont hobbit hole has really outdone himself this time. Michael Rainey, AA1TJ, has posted a very interesting report on his experiments with voice-powered radio. I was, of course, delighted that he went with DSB. Check it out: http://mjrainey.googlepages.com/elsilbo

I don't mean to seem like I'm taking any credit for this, but I did provide Michael some technical advice on how to increase power output:

Michael: Obviously the Italian elements in the project were of critical importance. Some of them may have escaped your attention. I note that an olive can was involved... For further progress I think you should consider working in some of the other substances that help keep Italy going: cappuccino, Nutela, and perhaps some vino bianco...

Another thing: While you are shouting, be sure to use the proper gesticulations. I recommend that you go Neapolitan here -- they are the best. I'd say that before each CQ, you should put yourself in a Neapolitan frame of mind: imagine that someone has bumped into your car and that you and the other guy are arguing about who is at fault. This should generate at least 20 mW!

In boca a lupo! 73

Bill

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Great CQ Article on Joe Taylor, K1JT

The October 2009 issue of CQ magazine has a really interesting article on Joe Taylor, K1JT. Joe is a winner of the Nobel Prize in Physics. The article is by CQ magazine editor Rich Moseson, W2VU. I was particularly interested in the Joe's description of how his radio astronomy work led eventually to his creation of the WSJT and WSPR programs that many of us are now using. (Above you can see a WSPR report showing Joe's station in New Jersey receiving my 20 mW WSPR signal.)

CQ magazine has put a "Digging Deeper" article on Joe on its web site. It is not the full October 2008 magazine article, but the on-line article has much of the tech info from Rich's interview with Joe, and in some areas goes deeper. Great stuff! Here it is:
http://www.cq-amateur-radio.com/Joe_Taylor_webOct09.pdf
Thanks Rich! Thanks CQ! Thanks Joe!

Some Interesting QSLs from W7ZOI

Wes, W7ZOI, just put up on the web some QSLs from his collection. They are all very interesting. Take a look: http://w7zoi.net/qslcards/qsls.html I especially liked the "lemon QSO" card shown above.

While visiting the QSL page, I also came across the story of Wes's first encounter with homebrew ham radio. As a kid, he he would listen to a local 75 meter AM operator who was a hardcore homebrewer. On this guy's rig, "even the knobs were homebrew." Wes was listening with a crystal radio! What a great way to get started. More on this here: http://w7zoi.net/shack.html
Thanks Wes!

Duct Tape Repair of Lunar Rover

Hey, doesn't that mountain ("Shorty") on the moon look a bit like Mount Calvo (the one that Billy and I were climbing last weekend, see below)? But I digress. This is all about Duct tape. Apollo 17. The right rear fender on the moon buggy gets broken. Duct tape to the rescue!
http://science.nasa.gov/headlines/y2008/21apr_ducttape.htm

Monte Calvo and a Summit on the Air

We had kind of a mountain theme this weekend. We were out in the country again. After some horseback riding in the morning, Billy and I and some friends decided to hike up a little mountain in the area. It is part of Monte Calvo. We didn't make it to the summit (too much underbrush) but I managed to send an e-mail with the coordinates of our highest point. I put the location it on Google Earth --you can see how we did. On to the summit next time!
Speaking of summits, I only made two contacts with the HW-8 this weekend (from the house, not the mountain). The first was a contest station on 20 meters, UN9GD. But the second (also on 20) was a QRP "Summit on the Air" station. DK1HW/P was running four watts from a KX-1. It was nice to work another QRP station. (It was cold in the mountains this weekend -- my fist was not at its best!)

When all else fails... THE KNACK

Kurt, N3JTW, alerted me to an excellent article on the blog site of the Dutch magazine Elektor. It is about a major flood in the Netherlands in 1953. Cut off from the mainland and without communication gear, OM Hossfeld whipped up the transmitter pictured above and set up a vitally important communications link. He used an 807 tube in the final. 10 Watts out on 15 meters. Note the coil wound on the bottle. The call was PA0ZRK. FB!
Here's the link: http://theelectronicball.blogspot.com/2009/10/radio-to-rescue.html

A REALLY Different Kind of Construction Problem

OK, so you're building a Large Hadron Collider, hoping to conjure up the elusive Higgs-Boson particle. But somehow, every time you try, smoke gets released. Here is one recent theory (reported in the New York Times) about what is going on:

"I'm talking about the notion that the troubled collider is being sabotaged by its own future. A pair of otherwise distinguished physicists have suggested that the hypothesized Higgs boson, which physicists hope to produce with the collider, might be so abhorrent to nature that its creation would ripple backward through time and stop the collider before it could make one, like a time traveler who goes back in time to kill his grandfather."

Wow! This is really useful troubleshooting information! Who among us hasn't been working on something that could be considered "abhorrent to nature"? We are, after all, the "ugly" construction guys. Perhaps if things get a little too ugly, a WHOLE DIFFERENT set of problems kick in. No wonder I couldn't get that 440 Mhz transverter working!!!

Micro Men on the BBC: Sinclairs, Acorns, and the Knack

Now these guys look like some proper British boffins!
Tony Fishpool, G4WIF, sent me this link to a wonderful new BBC program about the early days of home computing: http://www.guardian.co.uk/technology/gamesblog/2009/oct/08/armstrong-freeman-micro-men-bbc

Tony also sent me his own story of computer derring-do in the early days. Here Tony once again marks himself as a true Knack victim, and a true wizard. Commenting on the BBC show, Tony wrote:

...I enjoyed a huge dose of nostalgia. I owned both Sinclair and Acorn computers back then and I suppose they launched me on a geek career that's put food on the table ever since.

One of the first Christmas's of my early married life tested my new bride's
patience with a knack victim for a husband.

A long awaited Acorn Atom kit computer finally arrived on Christmas Eve. All during Christmas day I was hunched over a steaming soldering iron installing every capacitor, resistor and semiconductor in the computer's printed circuit board.

That evening after the last component was installed I applied power and
there was a beep and the TV (which should have been showing Christmas
movies) displayed :-

Acorn Computers

Ready>

Wow!

How I managed to get that computer working first time still amazes me to
this day. How I am still married amazes me even more - but I was "in the
zone" and that computer just had to be built.

The TV show is called "Micro Men" so look out for it.

Kind regards
Tony G4WIF

RSGB Convention... via Skype

The fellows running the RSGB convention asked me to come up to the UK and speak at this year's event. I couldn't make the trip, but we decided to try to set up a virtual appearance via Skype video. Brian, G8OSN, put it all together, and the link worked like a charm. It was really a lot of fun, and I didn't have to be away from the family.
As noted below, you can see a video of one version of my talk by clicking on the video links off to the sides of this blog page. Thanks again to RSGB, and especially to Brian, for giving me the chance to do this.

Video Smoke

There is a special SolderSmoke video on YouTube today. Look for the
M0HBR channel. Or use the SS Video link to the right on this blog 73
from Ponticelli
Bill