Hello everyone! Brand new to theremins, and I mostly got the hang of the pitch part, but the volume is being a pain. I have the following volume oscillator setup:
Followed by an LC tank to boost the far-hand frequency and a peak detector
And finally a long-tail VCA
With this setup, I can get a pretty okay signal out of the Env node:
However, I don't know what to do to change these levels, and the red signal (which represents the hand being closest to the antenna) is not high enough to saturate my NPN at the VCA. My setup is mostly cobbled together from tutorials and schematics online, so I had a few questions:
1. What is the best approach to designing an F/V system for the VCA? Is there a known best topology, or a known simplest topology, or is it kind of a try-it-and-see-what-works deal?
2. Is my VCA good enough, or are there any immediate issues with the rest of my setup? It seems like most setups I find online use an integrator, but I could not get that to work.
3. Are there any resources where I can read on the volume oscillator and the concepts that go into building one?
Thank you all for your help and patience 
