Fixing LiFePO4 Batteries That Won’t Charge

As is the seemingly the craze in ham radio, I recently picked up several LiFePO4 batteries of varying capacities to use with my Yaesu FT-991a. I was able to get these as part of the Amazon Vine program, so there is no particular reason I chose the models in question:...
DIY Yaesu FH-2 Keypad

DIY Yaesu FH-2 Keypad

After buying my Yaesu FT-991a and using it for Field Day, I realized that some functions are a bit annoying to control. In particular, getting the voice keyer going requires the display to show the specific recording buttons for operation. This blocks the waterfall as...

Powering a Ham Radio with USB Power Delivery

A while back, I built a cable to power 12V devices (in my case a Kenwood TH-D74 HT) using the QuickCharge standard available in some USB power adapters. This allowed me to use a USB charger to charge my HT rather than bringing a dedicated wall wart which helped save...

VUCC Circle Checker Script

As a relatively active rover for satellite operations, I’m often looking to check whether a new location will be within my “VUCC circle” and be eligible to count for my home station VUCC certificate. Rule six of the ARRL’s  VHF/UHF Century Club...

Raspberry Pi METAR Ticker Display

When I was still in graduate school a few years ago, my office was in the center of a building which meant no windows and no way to quickly see the weather outside. This motivated me to make a project that would display the current weather on my desk. Being a pilot, I...