After several itterations I am happy to share my version of a small microphone for the KX2/3.
Fully aware that Adam @K6ARK has shared something very similar just some month back.
But I wanted to my own take on this matter.
Skills that I developed was simple PCB design using a well know Chinese PCB supplier with various error in planning and execution but here we are:
The “handle” on the left side is used with some shrininking tube as strain relief.
I use a 4 ping TRRS connector on the radio side. On the mic cable I add a ferrite choke - who knows it might help hi. It is a 90° angled extention cable that I just cut to about 80 cm lenght.
The mic capsule is not placed like shown but pointing to the side. This perfectly centers it.
Audio tests via the monitor function on my KX2 sound excellent.
All SMT parts (so without the capsule) can be ordered already assembled on the pcb. I hand soldered them in this version.
The 3D printed case is fixed with 2 shrinking tube pieces so in case it is needed one can open up the case.
I am not planning a mass production but will work on the documentation and will share so that everyone can make their own version.
If enough interest is shown I will organize a small group buy. Contact me via private message here on the Reflector. Thank you.
I have to say I’m very impressed. Today on OE/ST-190 I made over 90 QSO’s with your microphone and it worked like a charm. Received several statements from chasers that the audio was nice and clear … thanks for the hard work and for sharing this with the SOTA community.
Don’t know how I missed this thread before! That’s a neat looking microphone!
My attempt at making a microphone isn’t quite so elegant but I get reports of ‘DX audio’ which suits me fine. I got a bag of mic capsules from overseas very cheaply. I used a piece of black plastic pipe stuffed with cotton wool to contain the capsule, along with a momentary switch.
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