Monthly Archives: December 2015

HH Scott 233 Stereo Integrated Amplifier Overhaul

Posted on December 31, 2015 by jwk

From the Rain City Audio repair blog: I was lucky enough to get to work on a very nice Scott 233 stereo integrated amplifier. This example was wonderfully well preserved, coming out of a storage unit looking like it had … Continue reading →

Posted in Audio, Electronics, Radios and Tubes, Stereo, Vintage | Tagged , , , , , , | 5 Comments

Service Shortcuts December 1932

Posted on December 30, 2015 by jwk

Due to a technical problem, this post was initially published with no content on Tuesday, December 29th. Retrovoltage regrets this error. Hints for the service shop, from December 1932’s Radio Retailing: A.V.C. Accessory for Screen-Grid Sets by Joseph E. Soos A … Continue reading →

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Merry Christmas from Retrovoltage!

Posted on December 25, 2015 by jwk

Radio & Television News, December 1954

Posted in Collections, Commentary, Vintage | Tagged , , , , , , , | 4 Comments

What’s On Your Workbench?

Posted on December 20, 2015 by jwk

People ask me what kind of gear I use at Retrovoltage and at Rain City Audio for projects. So, here we go: While it’s by no means the best-equipped workbench out there, it has a good mix of lab- and service-grade … Continue reading →

Posted in Collections, Commentary, Test Equipment | Tagged , , , , , , , , , , | 6 Comments

Assembling Transistor Radios in 1955

Posted on December 18, 2015 by jwk

Here’s a great documentary short from 1955 showing how portable transistor radios were assembled. It’s super retro! (2:35) Want to learn more about transistors? Just a few years later the US Information Agency produced an 8-minute short film about the … Continue reading →

Posted in Collections, Electronics, Vintage | Tagged , , , , , , , , , , | 2 Comments

It’s Beginning To Look A Lot Like Christmas

Posted on December 16, 2015 by jwk

Bring the Sound of Christmas Into Your Home with RCA Victor Radio

Posted in Collections, Commentary, Vintage | Tagged , , , | 4 Comments

Tektronix 575 Mod 122C Curve Tracer Restoration Project – Part 1

Posted on December 15, 2015 by jwk

A while back I picked up a Tektronix 575 Mod 122C transistor curve tracer from Craigslist and just started digging into it. With some encouragement from reader petepdx, I’ve started actually looking into fixing it up. (Click the photos for a much larger … Continue reading →

Posted in Commentary, Electronics, Test Equipment, Vintage | Tagged , , , , , , , , , , , | 16 Comments

Collector or Bargain-Hunter? There are Craigslist deals out there.

Posted on December 12, 2015 by jwk

If you’re like me and have a liking for vintage electronics, you’ll know that they turn up in a lot of places. Craigslist tends to be a pretty good spot for radios and even piles of tubes from time to … Continue reading →

Posted in Commentary, Test Equipment, Vintage | Tagged , , , , , | 7 Comments

Bose® 901 Series IV Active Equalizer #269557 Repaired

Posted on December 10, 2015 by jwk

From the Rain City Audio Repair Blog: Another Bose® 901 Series IV Active Equalizer came in through the shop for an overhaul recently. This one was a bit unusual, and represents a fairly significant deviation from the published service manual. … Continue reading →

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Make Christmas Special This Year with Allied Radio!

Posted on December 9, 2015 by jwk
Posted in Collections, Commentary, Vintage | Tagged , , , | 3 Comments