BITX40 Hand Microphone

Hand microphone containing PTT button, speaker and microphone.

I had great fun with the BITX40 transceiver kit from hfsigs.com, but didn't like having the PTT and microphone case-mounted. Added a speaker as well, feels more comfortable than headphones. My build here connects to the BITX40 with cat5e ethernet cable and a DB9 connector pair, works well but the ethernet is keen on curling up.

You can tune the knobs at the start of the .scad file to your components. I used:
- the microphone f