Taking this one stage further, I know from my experiments at VLF that the AC mains hum between a pair of grounded electrodes can be pretty high. There is certainly enough 50(or 60)Hz energy going free in the ground to power something useful. I keep wondering if I could get a few uWs of HF RF power from a low voltage crystal oscillator that would be enough to work some local stations on CW? My nearest station is 0.3km and the next nearest 3km. Now having a QSO using free power from my back garden would be rather fun.
3 comments:
Have a look at:
http://www.crystalradio.net/crystalplans/xximages/Free2.JPG
Philip G4HOJ
I love his designs. They are so simple, but so elegant. I built and heavily modified one of his regen designs. They perform amazingly well.
its an interesting idea but a 1.5v cell would last for a year swiched on all he time in that circuit.
Then you wouldnt need all that rectifier mumbo jumbo!!
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