Three radio theremin explained

The three radio theremin was originally invented by Tomoya Yamamoto.[1] The theremin is constructed by tuning three separate radios to create a system that acts similar to a stand-alone theremin.[2] The circuitry in each individual radio is used to functionally modulate the sound out of the third, producing similar tonal qualities as a theremin.

The following process can be used to produce the same effect:

  1. Find three sets of amplitude modulated (AM) radios of superheterodyne receiver type
  2. Place set 3 radio between set 1 and set 2
  3. Set 1 and set 2 radios tuned to 1145 kHz and set 3 to 1600 kHz so that local oscillators of set 1 and 2 well received by set 3 radio
  4. Local oscillator of set 1 and 2 may produce beat sound in set 3
  5. Manipulate hand over set 1 antenna to change the frequency of beat sound
  6. Volume of beat sound reduced by covering set 3 radio with hand.

Notes and References

  1. Web site: YAMAMOTO. Tomoya. Super Theremin utilizing three radio sets « TOMOYA YAMAMOTO. www.tomoya.com. 17 April 2018.
  2. Web site: SUZUKI. YURI. Three Radio Theremin « YURI SUZUKI. yurisuzuki.com. 22 December 2016.

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