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March 2023 S M T W T F S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Meta
Category Archives: Test Equipment
1951 EMC 211 Service Tube Tester Refurbish
From Rain City Audio: I don’t often work on test equipment, but sometimes I take a tube tester or similar for service. This one in particular is a 1951 EMC Model 211 tube tester, a quick and simple emissions tester … Continue reading
Posted in Electronics, Projects, Test Equipment, Vintage
Tagged 1951, EMC, EMC 211, repair, tube tester
3 Comments
Bad Caps in Everything
I just had a bit of a scare with my Audio Precision analyzer. The 2004-era Dell OptiPlex GX270 which drives the AP hardware decided it would refuse to power up – just flashing the “ON” light for a fraction of … Continue reading
Posted in Computers, DIY, Electronics, Test Equipment
Tagged audio precision, capacitors, motherboard, system one, windows 98
3 Comments
Bose® Active Equalizer Test Platform
This project is going to take a while since I’m slammed in the shop, but I’m in the process of converting a Bose® 901 Series I Active Equalizer to a test platform. With sockets for the transistors, and clip connections … Continue reading
Posted in Audio, Bose, DIY, Electronics, Stereo, Test Equipment
Tagged Bose, conversion, Equalizer, sockets, test platform, transistor
3 Comments
Retro 1956 Cyclometer VTVM – Hycon Model 615
A pretty cool, very rare piece of test equipment turned up on eBay recently: a 1956 Hycon model 615 AC/DC VTVM. This was a precursor of today’s digital, using analog servo circuitry to drive the numeric digit display. These were … Continue reading
Posted in Electronics, Gadgets, Test Equipment, Vintage
Tagged bench meter, cyclometer, hycon, model 615, voltmeter, VTVM
2 Comments
Collector or Bargain-Hunter? There are Craigslist deals out there.
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 4c250, ghz oscilloscope, kilomegacycle, oscilloscope, tektronix, tektronix 519
7 Comments
Mailbag: What’s the best multitester for vintage radios?
I recently got this question in the mailbag, and it seemed like a good one to answer: What’s the best multitester for vintage radio repair? That’s actually a tougher question than it seems. The short answer? Well…it depends a bit, but … Continue reading
Posted in Commentary, DIY, Electronics, Gadgets, Test Equipment
Tagged chanalyst, multitester, signal tracer, test equipment, vintage radio repair
2 Comments
Hands On with the FLIR One for Android
Several months ago I ordered a FLIR One for Android, a small attachment which adds infrared thermal vision capabilities to most Android smartphones and tablets. After the backlog of pre-orders finally cleared out, I got my hands on mine today! … Continue reading
Posted in Electronics, Gadgets, Technology, Test Equipment
Tagged android, camera, FLIR, FLIR One, infrared, night vision, Thermal Imaging, thermal sensor
1 Comment
Adding Capture to a Vintage Scanning Electron Microscope
Applied Science over at YouTube has a great video about adding a capture capabilities to a vintage scanning electron microscope, including some great videos of that instrument in action. Check it out:
Posted in Commentary, DIY, Electronics, Test Equipment
Tagged repair, scanning electron microscope, upgrade, vintage
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New Test Equipment Day!
I’ve added a new analysis system to my stereo bench…the Audio Precision System One. Amplifier measurements just got a whole lot more precise.
Posted in Commentary, Test Equipment, Tools, Toys
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What’s On Your Workbench?
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 →