K6JCA

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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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