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An experimental device created by Konstantine Raudive in the 1960's.

Use it like a microphone by plugging into a voice recorder's MIC input or plug it into an amplifier, if you wish.

  Thid device picks up electro-magnetic fields where, research has shown, the voices of disembodied spirits can communicate.

No batteries required.

Raudive's Germanium Crystal Diode Receiver