Custom-Built Replacement Tubes For RCA Theremin
Mark McKeown built these custom vacuum tubes by request to replace the 120 tubes in the RCA Theremin. The tubes are a solid statement replacement and eliminate the volume lag of the original tubes. He has some left from the project and is selling them...
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Recent Comments
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by merula on article A very special Theremin Academy will happen in Lausanne/Switzerland in February 2019 43 days ago:
"Where can I get one of those boxes?"
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by Dominique on photo The DC heater supply 57 days ago:
"I used veroboard for the print. Veroboard is OK with voltages up to 50V."
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by Dominique on photo The inside 57 days ago:
"All shielded cables are 2 wires shielded cables. With these, it is possible to use one wire for the signal ground, one wire for the signal, they will..."
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by Dominique on photo The inside 57 days ago:
"The coils with the white strong paper are hand made coils. I keep these sheets of paper as it, because as long I am working on that project, they are..."
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by Dominique on photo The antennas version 2 57 days ago:
"The shields provides a good protection against noises like hum."