Category Archives: Photos

Would you look at that!

Posted on August 9, 2016 by jwk

It’s pretty, but this 12BA6 tube has amplified for the last time. Vacuum failure has led to a gas intruding into the vacuum, and it makes a great light show when it’s being tested! As cool as it looks, this would cause … Continue reading →

Posted in Photos, Radios and Tubes, Vintage | Tagged , , , | 1 Comment

New Bench Storage

Posted on February 26, 2016 by jwk

Some pegboards, and wall mounting some parts bins, really cleaned up the benchtop!

Posted in Commentary, Photos | Tagged , , | 2 Comments

Antique Radio Shop near Kunming, Yunan, China

Posted on February 22, 2016 by jwk

My friends over at Crimson Lotus Tea sent me this photo of an antique radio shop near Kunming, Yunan in China they ran into during a recent trip. They’re stacked to the ceiling in the shadows. Looks like a fun … Continue reading →

Posted in Collections, Photos | Tagged , , , , | 2 Comments

The Hewlett-Packard 5451A Fourier Analyzer

Posted on July 27, 2015 by jwk

1972: the year launching the Space Shuttle program, the completion of the monument at Stone Mountain, Watergate, the first female FBI agents to join the force….and the new HP 5451A Fourier Analyzer, bringing unparalleled performance to the worlds of acoustic … Continue reading →

Posted in Electronics, Photos, Test Equipment, Vintage | Tagged , , , , , , , , | 1 Comment

Vintage Engineering is Beautiful

Posted on October 30, 2014 by jwk

EL84 output tubes in an EICO HF-81 integrated stereo amplifier.

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Marantz 2270 Stereophonic Receiver Overhaul

Posted on October 26, 2014 by jwk

I just had a great stereo receiver through the shop for repairs, the Marantz 2270. It’s the big brother to the Marantz 2245 I had through the shop a little while ago – mostly the same front-end circuitry, but with … Continue reading →

Posted in Commentary, Photos, Vintage | Tagged , , , , , , | 1 Comment

Wherever you go – you’re headed for FUN with Motorola Portables

Posted on October 1, 2014 by jwk

No matter where you’re going, you’re headed for more Fun with a Motorola Portable! They play anywhere – on their own batteries or on house current. You’ll like the dependable performance that comes from the ruggedly built chassis and shock-resistant … Continue reading →

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Steampunk USB Vacuum Tube Flash Drives

Posted on September 26, 2014 by jwk

I ran across these very cool steampunk-inspired USB flash drives drives built around a vacuum tube while looking for some tube shields. They look like they’re really well built and are a clever use of an old vacuum tube. I … Continue reading →

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Parts of a Vintage Radio – Middle Tube Era

Posted on September 8, 2014 by jwk

Photos with parts diagrams of a vintage tube radio – the Crosley 10-139, from about the middle of the tube era. Click each photo for full size.  

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HP 1405A Plug-In Mystery: Which Is It?

Posted on September 1, 2014 by jwk

I’m fixing up an HP 143A Wide-Screen Mainframe Oscilloscope, which has a very big selection of plug-ins to provide a variety of functions. The oscilloscope has symmetrical vertical and horizontal circuits, so it can be used as an X-Y amplifier … Continue reading →

Posted in Electronics, Gadgets, Photos, Test Equipment, Vintage | Tagged , , , , , , , , , , | 16 Comments