Category: Electronics

A Custom VFO with a Custom PCB from PCBWay, and BITX Rebuild Update

As the BITX40 Rebuild gets closer to completion, I find myself wondering if I’ll ever be fully finished with it, or if it will continue as a years long project. I suspect the latter, but for the sake of completing other projects, I want to get it “finished” and leave it as-is for the time. …

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Prototyping with Corrugated Plastic and Hot Glue

While taking a look at the latest Solder Smoke Blog posts, I ran into This Post where Bill mentions how much he loves using a wood board- so much so that he might not even put the radio in a case! This got me thinking: What do I have around my shack that I could …

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BITX40 Rebuild Part 3: Back On The Air!

In the July 2020 update, I made mention that my BITX40 BITX’d the dust, so to speak. Receive worked, but transmit failed. In Part 1 of the BITX40 Rebuild series I talked about the history of my radio, some of the modifications I’ve made, and how badly I messed it up when troubleshooting the problem! …

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ATU-10 QRP Auto-Tuner emerges. And, a uSDX killer?

QRP Guys need tuners that are small,. portable, and low power. Can an Automatic Antenna Tuner do the job? Find out!

BITX40 Rebuild Progress Report, MiscDotNews

In this post we’re going to catch up with what’s been going on over here at MiscDotGeek and explain the gap in posts lately. We’ve been busy, and some of it hasn’t been all good, sad to say. I recently posted about a series of videos related to the BITX40 Rebuild project, which so far …

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BITX40 Rebuild Part 2: It Has Begun!

As I wrote in Part 1 of the BITX40 Rebuild Part 1, my own love affair with the BITX40 goes back to December 2016 when a gift from my wife arrived from India in the form of a BITX40v3 from HF Signals, Ashhar Farhan’s company that at the time produced just the BITX40v3. Also mentioned …

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Ununs, A new End Fed, and Homebrew Capacitors [YouTube]

Things have been pretty hectic here at Chez Geek, but I’ve made some time this month to work on a new project. Now that the QCX Mini 20 is all fixed up, and I’m making inroads in learning CW, it’s time for a dedicated “spare” antenna. My station has been single-antenna since I restarted radio …

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QCX Mini Troubleshooting and Repair Tips

If you’ve been keeping up on the MiscDotGeek YouTube channel or the QRP Labs Groups.io forum, then you’re likely aware that the QCX Mini has had some teething issues. We’ve already covered the C38 problem, and that’s been fully resolved. Instead we’re going to look at the issue that some builders are having: The inability …

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Critical QCX Mini Update and some Mini Tips

On 12/3/2020, Hans Summers of QRP Labs released the QCX Mini- a truly miniature 5W CW transceiver. By the December 7, all 997 units were sold! It was definitely exciting to see the response to this new product, and after having built most of my own QCX Mini, I can confirm- it’s an incredible little …

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QCX Mini: Winding and Installing T1

A lot of hams have expressed trepidation about winding and installing T1 on a QCX Mini, QCX+ or even the original QCX, since they’re all the same. T1 looks hard because there are four windings on one toroid. In this video, I wound T1 and installed it on the QCX Mini. All that’s left to …

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