EVP machine!

[Dr H]

You mean it has the power to cloud mens minds?

Excuse me: that would be shadow power.

 

[tsig]

Excuse me: that would be shadow power.

Shadow power could be the explanation of why people buy into EVP.

From every clouded mind
A little woo must fall.

 

[Christian Klippel]

Due to an ongoing thread in MDC application thread by The Professor this is referenced as being some kind of succesful proof of life after death.
http://www.worlditc.org/c_04_s_bridge_19.htm

I would be interested in thoughts on the topic.

Hmm, i can't see anything related to ultrasonic transmitters or receivers in that fancy diagram. I mean, just because there are frequencies involved that are in that range, ultrasonic includes the "sonic" part. That means, it would need something that is very much like a loudspeaker and a microphone, just that it would be optimized for the given frequencies. Like this here.

However, what i do see is an arrangement of a long wave transmitter and receiver. And guess what, long wave radio is actually used to transmit, uhm, well, radio! Have a look here. You can clearly see the antenna part as well as the parts for a resonant circuit on both ends, that is, a coil parallel to an capacitor, coupled to an antenna.

So, if that thing receives anything beyond the waves it transmits, it's very likely to be distant radio stations. It pretty much looks similar what they used nowdays: a radio picking up random radio station(s). The outcome of this thing will be the generated beepy sounds of the generators mixed with whatever radio station is received.

While FM reception becomes really messy when you have two stations/transmitters on the same frequency, AM can mix pretty well. It is not uncommon to hear several radio stations at once on long and middle wave radios. Especially long wave is prone to that since long waves can cover really big areas and distances.

So, all they did in that contraption is to build a long wave transmitter with low power output and a long wave receiver that picks up the result, very likely mixed with another distant radio station. No surprise that they hear voices

Greetings,

Chris

Edit: Yes, regular radio is above the frequencies that they use. However, lots of radio amateurs use lower frequencies that are within the spectrum of the long wave band.