View single post by Jan
 Posted: Apr 12th, 2013 01:56 PM
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Jan

 

Joined: Jun 5th, 2012
Location: Inverness, Scotland
Posts: 85
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 I remember diagram 1 from post #3 from Breakthrough and I made it in a screened Sellotape tin in 1975 using an OA81 germanium diode and about 12 inches of wire as the antenna.

When I plugged it into my Philips cassette recorder it didn't do anything except weakly pick up the local AM station, which looking back now is what I'd expect since it is just a very insensitive untuned crystal set as stated by Ron.

Has anyone ever used this circuit or one of its variants to pick up anything other than AM stations? Is there even the vaguest theories as to how it might work to generate EVPs?

Jan