Three radio theremin

The Three Radio Theremin was originally invented by Tomoya Yamamoto .[1] The theremin is constructed by tuning 3 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 3 sets of Amplitude Modulated (AM) Radios of superheterodyne receiver type
  2. Place set 3 radio between set1 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.

Recently Three Radio Theremin became very popular and can find many performance uploads in youtube using this method. This set up need only three usual AM radios and can try Theremin performance at ease.[3]


References
  1. YAMAMOTO, Tomoya. "Super Theremin utilizing three radio sets «  TOMOYA YAMAMOTO". www.tomoya.com. Retrieved 17 April 2018.
  2. SUZUKI, YURI. "Three Radio Theremin «  YURI SUZUKI". yurisuzuki.com. Retrieved 22 December 2016.
  3. "Super Theremin utilizing three radio sets".
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