retrotechnologist.blogspot.com
Retrotechnologist: September 2013
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Monday, September 16, 2013. A BRILLIANT SET BUILDER, A BRILLIANT KIT DESIGNER. Big Nick," KC9KEP, does amazing work. He's been building classic late-1930s/early-'40s ARRL Handbook. Receivers (plus some others) and good-looking as the League originals were, his are even better. If you like building your own ham gear, he's a inspiration. On the other side of the Atlantic and a generation or two more recent in technology, the clever Tim Walford ( Walford Electronics. Links to this post. Coker at left, QU-AX...
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Retrotechnologist: TELEGRAPH KEYS AT 2014 DAYTON HAMVENTION
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Saturday, May 17, 2014. TELEGRAPH KEYS AT 2014 DAYTON HAMVENTION. A selection of old keys - and one new one - from the Dayton Hamvention:. Pendograph," with a base-supported vertical pendulum for forming dits. Pendograph close-up. The owner let me try it - very nice feel. It's a "release of tension" design like the Mecograph: the reed is flexed at rest, and released to vibrate when you work the left paddle. This is a Mecograph, one of two versions. Labels: HORACE G. MARTIN AND OTHERS. Im kinda sick that ...
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Retrotechnologist: May 2014
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Thursday, May 29, 2014. OLD-STYLE COVER FOR A MODERN LOG. It is modeled after one published by Bud in the 1930s:. I'm not too unhappy with how it came out. Links to this post. Wednesday, May 28, 2014. PORTABLE-MOBILE LOGBOOKS FOR AMATEUR RADIO. Any more, hams are not required to keep logs - but it is nice to have a record of who you heard from, and when. Here are a couple for portable and mobile operation - Field Day is coming up! Links to this post. Saturday, May 17, 2014. You see these in old photos of...
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Retrotechnologist: CARBON MICROPHONE CHECKING
http://retrotechnologist.blogspot.com/2015/06/carbom-microphone-checking.html
Monday, June 1, 2015. I went through most of my collection of carbon mics tonight. The old ones are nearly always non-working when found: they pick up humidity, the carbon packs solid, and that's it; or the carbon granules dribble out over time. Not all of them. I found several that still work, and a couple that I'd thought were dead (a Shure Brothers 3-A and a 3-B) aren't. Here are the working ones:. Labels: IN THE WORKSHOP. June 1, 2015 at 6:45 PM. Seems like we did that with the mike in an old telepho...
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Retrotechnologist: STANCOR 10P TRANSMITTER: UPDATE 12
http://retrotechnologist.blogspot.com/2015/03/stancor-10p-update-12.html
Thursday, March 26, 2015. STANCOR 10P TRANSMITTER: UPDATE 12. A very long time in coming, I did make progress on the Stancor 10P, getting as far as power supply:. Rectifier heaters and HV, filter caps, filter choke and bleeder. It's a little crowded and I struggled to solder the capacitor and resistor to the chassis, even with the big iron. That work had it almost done, so tonight I added a few more things:. Installed output feedthroughs and connected the output, wired up the primary power and the meter.
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Retrotechnologist: February 2014
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Sunday, February 16, 2014. Links to this post. Subscribe to: Posts (Atom). I KNEW THE LOSS WAS SERIOUS WHEN I SAW. JUNK THEIR OLD PRINTING PRESSES. Seeing it myself made it real. Ripped the heart right out of that building and that paper. It's not why newspapers are dying but it is one reason why they die largely unmourned. Typewriters, Dial Telephones, Hand Tools, Old Amateur Radio Gear, Telegraph Keys, Analog Volt Ohmmeters, Vacuumatic Coffeemakers, Slide Rules. PRACTICIONERS OF THE ART:. I'm *mindless...
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Retrotechnologist: November 2013
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Friday, November 15, 2013. W9BSP: A HAM'S HAM, A TEACHER'S TEACHER. His name was Marshall H. Ensor. He was a shop teacher in Olathe, Kansas; except for a stint traning radiomen during WW II, he spent most of his life there. He spent it talking to the world and not just idle chatter, either - Marshall Ensor (and his sister Loretta) spent evenings sending code practice and "teaching radio by radio," a free-for-the-listening lecture course over the powerful W9BSP - W9UA transmitter. Links to this post.
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Retrotechnologist: July 2013
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Wednesday, July 31, 2013. ELECTRO-VOICE V-1 RIBBON MICROPHONE. Is there any mellower microphone than a good ribbon? These velocity mics are strikingly different to most other transducers - for one thing, the ribbon is operating above its resonant frequency, rather than below it. No other microphone works that way and it's part of their warmth and lack of. A long time ago, I owned an RCA 44BX. After" The base is not original. Of course it was dead. Responded slightly to a fingernail tapped on the fram...
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Retrotechnologist: July 2015
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Sunday, July 12, 2015. INDIANAPOLIS HAMFEST, 2015. I had to go solo this year, while Tam stayed home to meet the AT&T tech. This meant, of course, that I lacked even the modicum of restraint she sometimes adds-. The two large devices are a 1940s Meissner Analyst. Other neat stuff: a pair of vintage binoculars in good shape - didn't have anything but toy versions, so for $35, why not? Found but missed a nice balanced antenna tuner. I should have purchased it at first sight! When I returned home, the phone...
