Steve, I have a manual for what I believe is the first commercially available Theremin made by RCA in the 1930's. It uses the same hetrodyning principal but uses some oddball transformers that would give us fits to replicate. I can try to scan the manual with schematic if you're interested. It is fascinating. Ken Zuercher KC8QO
--- On Fri, 3/20/09, [email protected] <[email protected]> wrote: > From: [email protected] <[email protected]> > Subject: [AMRadio] Tube Theremin > To: [email protected] > Date: Friday, March 20, 2009, 4:08 PM > I've got a new sort-of AM project on the bench here > now:? a tube Theremin.? This musical instrument produces > sound by heterodyning two > oscillators that run in the low-end of the broadcast band. > I'd like to find three Miller 70-OSC coils or > equivalent for this rig - anyone have some?? > > > > If you are interested in the circuit, I'm building upon > the ideas of Doug Forbes that I found online.? > > See > > http://www.wd8das.net/theremin.gif > > and > > http://www.wd8das.net/theremin.txt > > > > Thanks... > > > > > > > > > > > > Steve WD8DAS > > > > [email protected] > > http://www.wd8das.net/ > > --------------------------------------------------------- > > Radio is your best entertainment value. > > --------------------------------------------------------- > > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: > http://www.mail-archive.com/[email protected]/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: [email protected] > To unsubscribe, send an email to > [email protected] with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: > http://www.qsl.net/donate.html ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
