K6ARK Mini Mic for IC705

Equipment
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I built two K6ARK Mini Mics recently.
One for the KX3 which was very simple to make, following Adams’ instructions.
Then I wanted one for my IC705 as well, but that was rather complicated, given that Icom uses a separate pin for the 8V DC, and the PTT is not just grounding a pin, but putting a resistor over the MIC line.

And to make things worse, I wanted to add the “A” button to send the first voice memory, to call “CQ SOTA … etc”. All in the little 3D printed case … but I got it all in ! :grinning_face:

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See the result on my blog, pictures and circuit diagram included:

73,
Luc - ON7DQ

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Nicely done. I built two of these recently. One for my KX2 which works. A second I built for my QMX, which doesn’t. I even went so far as to build another one with all-new components and it still didn’t work so I’m a bit flummoxed.

Love that additional A button you squeezed in, those mics are a tight fit so kudos on packing that all in there.

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It’s wired differently, just in case you were unaware. There’s a diagram in the latest QMX manual.

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Yep, and I triple checked my (sub-par) solder work and even swapped out to the suggested alternate mic component. Still no dice. Even re-flashed the QMX fw and nothing.

Not sure what I did wrong. Definitely have the right components but the QMX on-board tests won’t pick up the mic.

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Maybe a stupid suggestion, but have you set SSB input to mic, not USB? Happened to me, forgetting to switch to mic after using Winlink.

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Yep tried all that too. I can only imagine I got two lots of dodgy components, but the chances of that happening are on par with Rushden and Diamonds winning the Champions League.

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Well done Luc,thats quite a bit of wiring stuffed into that tiny case.

I’ve got one of those for my Trusdx,works quite well.

Can’t imagine using one for my 705 :sweat_smile:

73 Karlo

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