Tag Archives: projects

Building a Better Voltage Regulator

Posted on February 17, 2016 by jwk

Glancing through my feeds, I stumbled across a note on The Paleotechnologist describing a new replacement for the venerable LM7805 linear regulator IC. It turns up in a ton of devices, pretty much anything with a medium-current 5V rail including … Continue reading →

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First Look: 1934 Grunow 750 “World Cruiser”

Posted on October 10, 2012 by jwk

I’m getting ready to sell some of my radio collection to make room for new ones, but until that happens I’ve been under something of a self-imposed moratorium on new purchases. This one came up on eBay a little while … Continue reading →

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Shortwave Radio Reception with the RTL-SDR Dongle

Posted on August 6, 2012 by jwk

Need your own upconverter? Click here! I bought and did a quick setup on my RTLSDR dongle using SDR# a few weeks ago, where I used it to listen to FM radio stations around my area and a few public … Continue reading →

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Build Log and Review: Mable Audio VT-86PP Kit Hi-Fi Amp Project [Chinese Gear]

Posted on March 30, 2012 by jwk

About a year ago, someone left a comment that really looked like spam on one of my pages advertising a web store selling tube audio gear and parts for guitar and audio amplifiers. Against everything I’ve ever learned about behaving … Continue reading →

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October Projects

Posted on October 3, 2011 by jwk

September was a good month for projects. I accomplished all the things I set out to do and more: I’ve finished the Hornyphon radio for my customer Repaired and began using the Hallicrafters Got the broken ViewSonic monitor going again … Continue reading →

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YAMR [Yet Another Monitor Repair] ViewSonic VP191b

Posted on September 24, 2011 by jwk

A little while ago, I picked up a set of seven LCD monitors in various states of not working  to work on repairing and maybe eventually reselling. The first one was quite easy – it just needed a wire reconnected … Continue reading →

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