Your diode Siguie, from memory, wasn't that from the scole experiment information? What interest me is Marcello Bacci and his DRV is the diode a similar concept?
Sort of it was in the "Scole Experiment" thread over at my place and that was because a member here was trying to make the Scole Experiment communication device, with the key component being Germanium. The thing is if you lookup Germanium Diodes you'll realize it's an easy and equivalent setup though vastly smaller. Also many of the old timey electronics were based on Germanium instead of Silicon much like Marcello Bacci’s old Nordmende valve radio it's a tube thang.
Oh and this should definitely be in a separate thread but here's his blurb from the After Life Society.
And there's a 90 minute UFO/TV thing available at AmazonTV and youtube ...
THE AFTERLIFE INVESTIGATIONS: The Scole Experiments - FEATURE
FYI: "this should definitely be in a separate thread " ... means use your mystical admin powers to fix thangs 'cuz I'm too lazy