K6JCA
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Saturday, May 23, 2026
Replacement Power Switch for an HP Agilent 3101-2124 DPDT Push-Button Power Switch
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I hadn't used one of my HP 3335A generators for a while, and when I turned it on a few weeks ago, the power-switch wouldn't stay lat...
Friday, January 2, 2026
Tektronix DC 509: Simple Mod for Adding an External Reference Clock
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I recently needed a portable counter for some measurement work. Looking at my shelf of test gear, I found a Tektronix DC 509 Counter Modu...
Friday, October 17, 2025
GPS Clocks: Automatic Daylight Savings Time and Baudrate Configuration
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Third K6JCA GPS Clock Third GPS Clock: For my third GPS clock (the second one to use the PCB I designed and had fab'd in China), I chose...
Friday, October 10, 2025
ChatGPT Agonies (or...Jeff Agonistes)
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(Image generated by ChatGPT) Below is a recent conversation I had with ChatGPT. My goal was to add automat...
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