Hello Texas,
The audience here is very small these days, odds are the owner or friends do not follow us.
The schematic to the RCA is around here with info from others that have built her.
I am not qualified on an ancient RCA but as a kid in the 1950’s I did swim in the Red River and got my first peek on a really humid day in a cornfield outside of Wichita Falls. I think they call it Lake Arrowhead area today.
If you lived way up north I could see it might be the warmth of the vacuum tubes that attracts you to the RCA design or is it the hope of achieving the authentic sound of the original inventor. I can verify one thing; he did not tell RCA everything.
This theremin you built, can you share anymore info on that.
I have a project that I started that I will share the results openly in the next few months of how I do it. I started calling it “Switched on Clara” .wav for various reasons. At the end of the sound I do switch her on. Listen to this sound byte from an EtherWave Standard, if you do not hear it then I will remain quiet.
Christopher
Edit: I forgot to ask, after your drought how are the intense rains in your area. We could use a "little" here.