Man makes walkie-talkie Theremin
Feedback can be your friend

Ingenious musician Gordon Charlton has come up with a novel way of producing Theremin-style sounds, and all he requires is a pair of walkie-talkies.
Charlton has posted a video of his 'invention' on YouTube - he simply turns the handsets on and moves them closer together and further apart. The pitch of the feedback that's created changes accordingly.
That's all there is to it, really - there's no circuit-bending or other modification involved in this. Gordon uses a pair of Binatone Latitude 150 walkie-talkies (pictured below) that you can pick up for less than £20, but presumably, any model would do.
Next: making an analogue synth out of a food processor.
(Via Matrixsynth)
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I’m the Deputy Editor of MusicRadar, having worked on the site since its launch in 2007. I previously spent eight years working on our sister magazine, Computer Music. I’ve been playing the piano, gigging in bands and failing to finish tracks at home for more than 30 years, 24 of which I’ve also spent writing about music and the ever-changing technology used to make it.
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