Jupiter In the Morning

Jupiter is high in the early morning sky now, and the weather is starting to cool off a bit here. Here is the configuration of the Galilean moons that I saw on September 11. This is from the Sky&Telescope on-line Jovian moon display.

I've even been able to do some "sidewalk astronomy" in the style of guru John Dobson: I have the telescope set up on my driveway, and I offer the pre-dawn dog walkers a look at Jupiter and Galileo's moons. They are always very pleased. It is a nice way to start the day!

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SolderSmoke Podcast #137

http://soldersmoke.com/soldersmoke137.mp3

10 September 2011

Earthquake! Hurricane! Tropical Storm!
The Heathkit HW-7 -- An Undeserved Bad Reputation
Over-the-counter saltpeter
Movie review: Green Hornet, Captain America
How many 2-Bs? (11,571)
Ubuntifying dead laptops
Get the SolderSmoke blog by e-mail
Replacing a diode ring mixer with a diode...
...then trying the NT7S MOSFET detector
Where is boatanchor wizard Walt Hutchins KJ4JV ?
GREAT NAMES IN RADIO: MCMURDO SILVER
Sputnik update
Lew McCoy wrote about one of my projects
MAILBAG (with mail from Farhan and Wes)

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Some Encouraging Graffiti

Spotted on a picnic bench in Falls Church, Virginia. Billy's eighth grade science course is focused on physics, so we took this as a good sign.

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Pale Blue Dot

I'm reading Carl Sagan's "Pale Blue Dot." I found this beautiful video:
http://www.youtube.com/watch?v=2pfwY2TNehw

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Take a look through the Chromoscope!

On this site you start out with a 360 degree image of the Earth's night sky. You move around using the mouse and you can zoom in and out. (I've zoomed in a bit on Orion in the image above.) Then the fun begins: You can look at the sky in different frequency ranges -- from radio to gamma ray. Very nice: http://www.chromoscope.net/

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Climbing a REALLY Tall Tower

This is the kind of thing that causes me to stick with sling shots and wire antennas. The comments added to the YouTube video were kind of funny -- most were in the vein of "Dude, not for a billion dollars!"

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Carl Sagan on Ham Radio and Extraterrestrial Communication

"Stars" by M.C. Escher

I read this on the train this morning and immediately wanted to share it with my fellow radio amateurs:

"And what if we receive a message? Is there any reason to think that the transmitting beings -- evolved over billions of years of geological time in an environment vastly different from our own -- would be sufficiently similar to us for the message to be understood? I think the answer must be yes. A civilization transmitting radio messages must at least know about radio. The frequency, time constant, and bandpass of the message are common to transmitting and receiving civilizations. The situation may be a little like that of amateur or ham radio operators. Except for occasional emergencies, their conversations seem almost exclusively concerned with the mechanics of their instruments: it is the one aspect of their lives they are certain to have in common."

From "The Dragons of Eden" by Carl Sagan.

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The Oldest 2-B? (I say it's a 10!)

Harv: Wow, that's a beautiful 2-B OM. I give it a 10. If you compare it to mine, it's a 20! I checked our collection point for 2-B serial numbers and see that we have a couple that may be rivals in the title "Senior 2-B." Thanks for pointing out that they started at #2000.

................................

Hi Bill,

What makes a radio a 10 out of 10?

Good question. A real 10 to me means the radio is flawless, clean, not repainted and the best example possible based upon age and general appearance.

Here is one of my Drake 2B Communication Receivers with the matching Speaker/Q Multiplier.

This one has the S/N 2532 which, places the production of this radio close to early Spring 1961. The radio is not flawless. It has very minor metal edge dings in the paint.

I have the original Owners Manual and lots of special notes. At best my pictured radio above is a 9.5.

In my collection is also; S/N 4226 which was built near the end of 1961. I rate S/N 4226 as a 9.8 radio.

I’m impressed with the AVG recovery, general receiver sensitivity and the combination selectivity afforded by the Q-Multiplier.

I believe the Drake web site is spot on with the dating of the production runs for Drake equipment.

From talking to other Hams, it looks like the 2B started with S/N 2000 on their first full run of production in early April 1961.

It would be interesting to see if others find radios with a serial number less than mine still out there pulling duty.

I’m sure some pilot radios are out there in private collections. Let me know if someone finds an earlier serial number.

Keep up the great work Bill!!!

ENJOY

HARV -=WA3EIB=-

Albuquerque, NM.

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Another Treasure Trove Discovered

Our man in Ankara, Grayson, KJ7UM, sent me links to the truly amazing web site of Dr. J.B. Calvert, Professor Emeritus of Engineering at the University of Denver. Great stuff!
Sorry about the Istanbul/Ankara mix-up Grayson. I must say, Istanbul sounds cooler and more exotic. Good luck with the beer OM.

...............................................

Hi Bill,

Thought I would pass along the web site of quite an amazing fellow. While not a ham, he is a homebrewer, experimenter, and total scientist.
Guys like this amaze me!
http://mysite.du.edu/~jcalvert/index.htm

This is the site of Dr. James Calvert. On his site are hundreds of "papers" (articles?) on hundreds of scientific topics, history optics, astronomy, etc. I have read quite a few and I am damn impressed with the guys style, and curiosity.
Check out his paper on vacuum tubes. I learned a hell of a lot from this about a subject I though I know pretty well.

Check out this link
http://mysite.du.edu/~etuttle/electron/elecindx.htm
and the section on tubes:
http://mysite.du.edu/~etuttle/electron/elect27.htm
It is excellent. Enough to keep me reading for years.

Thanks for the plug in your last podcast.
BTW, I live in Ankara (the capital). If i did live in Istanbul, parts would be much easier to get. Actually I have found a source of parts, but what I REALLY need is a good source of decent beer! TUrkey only has one beer and it sucks. Anyone want to send me a good beer I would be most appreciative (then I can homebrew much better!)!

Take care and keep poding

Grayson
KJ7UM/TA2 - Ankara, Turkey

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Russia, Vermont, Sputnik, Old Parts

When I heard of the terrible floods in Vermont, I thought immediately of OM Michael, AA1TJ (aka Comrade Mikhail, the Chief Designer) and his underground hamshack. I heard this morning that Michael is high and dry, up at his mountain top lair (the TV transmitter). Here is an update on the Sputnik project:

Fellas,

This morning DL3PB was kind enough to bring Peter, DL3JIN's recent work to my attention.

http://dl3jin.de/sputnik1_tx.htm

I think you will agree that Peter has made a beautiful job of it! He not only used Russian tubes (valves), he even had a 21.060MHz Russian-made quartz crystal on-hand. Many of the passive components appear to be ex-Soviet surplus as well. His front panel really shows great spirit. With 96Vdc on the PA anode he's seeing an RF output power of 650mW.

It should be great fun come October 4!

73/72,

Mike, AA1TJ

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