Welcome to the Keppinger Theremin forum!

Posted: 1/11/2012 4:00:06 PM
Jason

From: Sammamish, Washington

Joined: 2/13/2005

This forum is for folks who are building or playing Mark Keppinger's awesome tube theremin designs. 

To learn more about his designs, visit our Tech & DIY section with links to schematics, photos, and audio samples.

http://www.thereminworld.com/Keppinger-Theremins

Posted: 5/3/2021 2:04:45 PM
bisem

From: Pittsburgh, Pennsylvania

Joined: 1/1/2011

I saw this post on Ebay today.  I am not an electrical technician at all so can anyone tell me if this is another Keppinger or is this an authentic of the RCA?
https://www.ebay.com/itm/272757447797?hash=item3f819c5c75:g:6doAAOSwEAtZZB2G

Posted: 5/3/2021 3:41:33 PM
Thierry

From: Colmar, France

Joined: 12/31/2007

I saw this post on Ebay today.  I am not an electrical technician at all so can anyone tell me if this is another Keppinger or is this an authentic of the RCA?https://www.ebay.com/itm/272757447797?hash=item3f819c5c75:g:6doAAOSwEAtZZB2G

The description says clearly: From The Ether Theremin circuitry is based around a "modernized" vacuum tube design by Mark Keppinger. which should answer your question.

Posted: 5/5/2021 2:39:38 AM
bisem

From: Pittsburgh, Pennsylvania

Joined: 1/1/2011

Duh....thanks I missed that.  I wonder why someone doesn't duplicate the original RCA design to sell.  Could there still be patent infringements?

Posted: 5/8/2021 4:20:41 PM
Ruslan

Joined: 7/23/2010

Probably Gordin Masazane theremin is based on RCA schematic. Does anyone know something about this model?

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