Paranormal Investigations Equipment's version of the Raudive (RAW-DEE-VAY) Diode (mic).

I just finished building my Raudive Diode, and with a few minor tweaks it is the same as the original Diode made by Konstantin Raudive a Latvian psychologist and philosopher. Below is a picture of the Raudive Diode I built. 

The Germanium Diode which is the major part of the Raudive Diode is essentially a non-physical microphone used in place of a physical microphone. The Germanium Diode acts as a microphone picking up only EVP's and not recording any ambient sounds (depending on the recorder used, when an external mic of any kind is plugged in, the recorder automatically shuts off the internal mic).

The copper disk mounted to the top is used as an antenna as its wired directly into the board containing the Germanium Diode. I believe copper is a better conductor rather than chrome or insulated wire. As you can see it plugs directly into the mic in or input socket on the recorder via a 3 foot cord. 

I use Zoom H2N recorders to plug these into during investigations, and let them sit constantly recording for the entire investigation. Also visit my online store for other paranormal investigating equipment.

Paranormal Investigations Equipment

THE ITC DEVICE RAUDIVE (ROW-DEE-VAY) DIODE AND HOW DOES IT WORK?

Konstantin Raudive (Pronounced Row-dee-vay) was a Latvian psychologist and parapsychologist who studied under Carl Yung. In the '60s he carried-out many EVP experiments and devised a method where the microphone was replaced with a germanium diode device,
essentially a de-tuned 'crystal set'. This has become known as a 'Raudive Diode'. Raudive made recordings using a 'Raudive Diode' receiver connected to the microphone socket of a tape recorder. During the recording session he asked questions, encouraging the dead to communicate with him. On playing back the tape, voices were heard on the recording. These became known as 'Raudive Voices'. His work was published in his 1971 book 'Breakthrough'. Raudive died in 1974.
Because there is no "actual" microphone on this device, and it mainly uses the Germanium Diode as a receiver, there should be no ambient noise recorded when using the Raudive Diode. If you do want or need the ambient noise recorded, such as questions asked, noises made etc...then a second recorder is needed. However as far as I know, there are two makes of recorders that will allow the internal mic to be used at the same time as an external. The Sony recorders and the Zoom recorders. There are many different types of Raudive Diodes out there, below are some pictures of different models.

 Currently I am working on my own Raudive Diode which will be totally different internally and externally. (my version is pictured below)

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