I built a Theremax from a kit about 7-8 years ago.  I recall the tuning of the coils to adjust the pitch frequencies to get a tone and match the antenna.  It was a bit tricky at first. 

I wish I had known more about what I was working with.  As many people I put it together more like a puzzle than a kit.



-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of David Van Horn
Sent: 30. marraskuuta 2005 22:08
To: Microcontroller discussion list - Public.
Subject: RE: [OT] Theremins


With the Theremax, the antenna coils were pretty much ignored, and it
wasn't clear to me how they should be designed from the information that
I've found  on the web. 

...

Since the pitch oscillator becomes unstable at the point where it hits
the antenna resonant frequency, this obviously would be a catastrophic
place to tune your pitch oscillator to. :) 



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