Category: Hacks

uSDX (SSB with a QCX) Update

Earlier this year I wrote about a modification/hack to the the QRP Labs QCX called uSDX that turns a normal CW only QCX into a SSB capable radio. It uses the Atmega 328p chip as an SDR, and uses a high end technology call EER to modulate SSB out of an amplifier made for CW. …

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Salvaging old CB’s for QRP Parts: Part 4

In the previous three installments, we tore down two old CB’s and an even older tube based CB linear amplifier. Those teardowns were a lot of fun and a great way to look at the way things used to be done before frequency synthesis took over. In this final CB teardown, we’re going to look …

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Salvaging old CB’s for QRP Parts: Part 2

Welcome to the second installment of “Salvaging old CB’s for QRP Parts”! In part 1 of this series, we described how we found a bin of CB radios and accessories at an estate sale some time back. The first radio we salvaged for parts was a Pace CB 145. The radio was disassembled to see …

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Project Brownie is Complete!

It’s complete, and it’s for sale! Details in the video below Last year I introduced Project Brownie: The quest to imagine what a spy radio, made with technology that wouldn’t emerge for another half century, would have looked like in the 1960’s. To do this, I”d need some parts, some creativity, and some tools. A …

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DSB Digital: Friend, or Foe?

I recently became aware that there are companies selling Double Side Band radios for use on digital HF frequencies (FT8 specifically) on 40m, 30m, and 20m. In this post we’re going to take a look at what these rigs are, what they were originally designed for, and then you can decide whether these should be …

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CurlyTP: Every Web Server is a Dead Drop

Wikipedia says that a dead drop is “a method of espionage tradecraft used to pass items or information between two individuals (e.g., a case officer and an agent, or two agents) using a secret location, thus not requiring them to meet directly and thereby maintaining operational security.“ How is it that every web server is …

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MiscDotGeek Welder Update and a New Project Launch!

Last year I posted about a small hobby welder that I’d picked up for only $15. In That Post I showed how nasty and gnarly it was, and a bit about what needed to be done to make it a working welder. Now, hold that thought! In another post I also wrote about how I …

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The Canon Powershot Camera: A Hackers Paradise

Imagine programming your thrift store point and shoot camera to do things no other inexpensive camera can do. Take time lapses, star trail photos, and far more. I’m not talking about raspberry pi’s or arduinos. Instead, I thought it would be neat to show you all my favorite camera in the world. It’s not a …

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Project Brownie Begins

One of my greatest joys of ham radio is repurposing things. It doesn’t matter if it’s a fishing pole for an antenna or stripping out old CAT5 cable for experimental wire antenna, or using fittings from old CBs. Earlier this year I found an old AM/FM clock radio that I stuffed my DC40 project into. …

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AF5HD’s L-Match Tuner Build

A fun project for every QRP enthusiast is an L-match tuner. We’ve built a couple here at MiscDotGeek and our latest build (shown here) inspired Billy Dunn (AF5HD) to build a similar tuner. We have to say, this one turned out better than ours did! The only trouble he ran into was that one of …

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