There are many such devices.T.e many variations.
But the Main Principle is this:

maybe somebody already eksperimentirovat in this direction?


Household debilizm. Antenna for VHF (high frequency) is connected to the amplifier low frequency (audio range) that is connected to the contact plate. And all penny. Unless the battery is drawn dear))) Like in the author's opinion this should work? What feature reduces contact with the trend? Sound vibrations converted into an electrical signal? The amplifier in the pictures anything else to strengthen the will not. And even if you can, then the received signal is absolutely useless to apply on this antenna (Yes to any useless, though low-frequency radio communications, and has a very long antenna, but there are frequency orders of magnitude greater, otherwise the attenuation in the atmosphere reduces everything to zero). It's like pancakes from the hard drive in the laser drive trying to read or a bulldog with a rhinoceros cross...
In Russian it seems to be not really found.Life itself is not new and sits at the heart of radionic-psionic devices.For example there is such modification
