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Showing posts from January, 2026

Elecraft K3, rear mic jack not working

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Elecraft K3 – Rear mic jack not working I recently decided to upgrade the headset in my “modern” station. Although my Heil Pro headset has been working fine, it becomes uncomfortable during longer operating sessions. At Mike (SJ2W), Bose QC25 headphones combined with Antlion ModMics have been used for many years. After working a few contests there, I can confidently say they are much more comfortable than the Heil headset, and way cheaper, since these headphones and mics are widely used by gamers. I picked up a used Antlion ModMic and a pair of Bose QC25s, and with that I wanted to clean up the wiring a bit—specifically getting rid of the bulky Heil “K” adapter with its large 1/4″ ptt jack on the front panel.  Since I only use a footswitch for ptt I felt it was annoying to have it cluttering the desk. My plan was to use the rear connectors for audio on the Elecraft K3, since there are plenty of them. Line in, Line out, phones, mic, and speaker output.  Unfortunat...