The FoxSniffer Chronicles - Chapter 1

August 8, 2026
r0 prototype, ugly and non-functional.

The FoxSniffer has finally shipped, all preorders are on their way, and I can finally take moment to finish this post. This project has been almost two years in the making (and ended up about eight months behind schedule).

The latest FoxSniffer design is in stock at the time of writing and available for sale on my store.

Assembled FoxSniffer RDF receiver.
FoxSniffer - Open Source Radio Direction Finder
$199.00

Let’s get into the development of this project, how it works, and what took so darn long. Spoiler - this is going to be a series.

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SMA to Whatever v2

March 20, 2026
Panel of 100 SMA:StdH v2 boards.

I made this board because I kept having a simple problem - I had a header (or less) where I needed a coax connection. The cost to make the board was nothing compared to the cost of shipping so I made a bunch of extras. Back then there wasn’t much in my store so I added kits for $3 and fully assembled boards for $4.

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New Blog, Less Bull$#!^

March 4, 2026
Figure 1: My thoughts on PHP and WordPress

You may have noticed I moved the store to Shopify about a month ago. Now I’ve also moved the blog. This is a purely static site rendered by Hugo, hosted on a server I manage. Let me know what you think.

tl;dr

Store is now on Shopify. Blog is now static and self-hosted. WordPress sucks. For now there’s no comment system (I’m open to suggestions) and some content hasn’t been moved yet - find it on the old blog for now.

If the trivia of administering this project doesn’t interest you feel free to stop reading now. The rest of this post is mostly me complaining.

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The Picofox Saga: Chapter 2 - Revenge of the Spurs

February 6, 2026
A fox, next to another fox.

This post was supposed to be short, just a quick update to say “I made a better PicoFox”. It was supposed to be a marketing piece driving sales, expressing gratitude to the community for great feedback, etc, etc, etc. What foolish thoughts I had!

Instead this post is a 1,691 word discussion of dumb decisions and the frustrations of engineering tradeoffs. Also, I made a better PicoFox.

Assembled PicoFox fox transmitter.
PicoFox - Open Source Fox Transmitter
$79.00

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Show Your Work – Especially When It’s Wrong

September 13, 2025
Figure 1: Bits of cured urethane that were supposed to be buttons.

I was the type that hated showing my work in math class. Who cares how I got to the answer, it’s correct isn’t it? Math always came easily to me so I’d often combine two or three steps in my head. Being told to show my work felt like an arbitrary and meaningless requirement, or maybe an accusation that I was cheating.

That’s not how I see things today. In my last post, The PicoFox Saga, I showed my process. Dumb ideas, wrong turns, and outright failures; if I left anything out it was for brevity. I did that while trying to market the PicoFox as a product. (I still am – you should buy one.)

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The PicoFox Saga

August 16, 2025
Figure 1: PicoFox r2 PCB up close.

Have you ever had an idea so spectacularly dumb you had to make it happen?

After seeing several SI5351 based transmitters for HF I had the idea that maybe this chip could be pushed to do frequency modulation on VHF bands. It does glitchless frequency changes, it can generate VHF clocks, it even claims a 0 PPM error. We all know that last part is nonsense but the error is so low that we can pretend that it’s zero and just select an appropriate input oscillator.

This is a spectacularly dumb idea. There are a hundred better ways to implement frequency modulation from simple analog circuits to full software defined radio. This is a middle ground that no one asked for but the idea was just so tempting to me and I couldn’t find a single technical reason not to do it.

I won’t bury the lede – I built the darn thing and it’s a great fox transmitter. Easy to configure just by editing a text file, extra GPIO for adding external devices, open source hardware and software so you can tinker to your heart’s content. It’s great, you should buy one. They’re in stock and shipping right now.

Assembled PicoFox fox transmitter.
PicoFox - Open Source Fox Transmitter
$79.00

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Digi-POTA with a Battery Powered QDX and an iPhone

August 2, 2025
QDX installed in its case with the battery and USB power supply.

The QRP-Labs QDX is a five band, five watt, digital mode HF transceiver. It’s highly efficient, easy to operate, and configurable for bands from 2200 meter through 4 meter. As usual, Hans has created a very clever bit of kit for the homebrew-minded ham.

For my QDX build I added a rechargeable LiPo battery pack, charge circuit, and a USB power supply. I packed the build into an inexpensive extruded aluminum enclosure that I sloppily machined for access to the various connectors. The result is a very lightweight and nearly self contained digital rig that can be operated with nothing more than my iPhone and a simple wire antenna.

For details on the kit check out QRP-Labs.com.

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Field Day in Review - 2025

July 19, 2025
Figure 1: Antennas don't work, but the sunset was pretty.

This year’s field day was an adventure. Great times were had by all but I could not have created more technical difficulties if I had been trying for the record.

Let’s back up. After last year’s field day, fueled by excitement and more than a little hubris, I volunteered to build and captain a VHF/UHF station this year. I’d seen some early success building rotators and antennas for satellite operations. With nearly a year of prep time I knew I could build an amazing station.

I did not.

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It Transmits Too! T41-EP v12 First POTA!

December 25, 2024
View from Martial Cottle Park (US-3473).

My T41 v12 build and I made it out to Martial Cottle Park (US-3473) for a quick Parks-On-The-Air activation on Saturday. There’s still some bugs to work out, both in my own build and in the T41 software, but I was successful with 26 FT8 contacts in a little over an hour!

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