Why Not?
Elie,
Check out the thread about Andreas's LRL regarding Tesla coils.
J Player,yeah good point and I guess I'd have to pick off the transmit noise and subtract it from the signal + noise of the broadband loop.
To be honest though if I'm going to bother with a wide band noise, I'd just as soon use a white noise generator,amplify it and send it into the ground via ground rods. Now that I think should show a distinction for differant kinds of metals frequency wise and definately amplitude and phase wise. I would use a standard metal detector type loop to receive the signal with and into a miniture spectrum analyzer such as the handheld variety. Food for thought I spose.
Speaking of remote sensing,let's say their was a vein of gold,copper,or silver,I wonder how far you could pick up the variation in the white noise with perhaps an E-field antenna or a ferrite loop?
I remember reading in an old issue of the California Mining Journal from the early 60's, where a guy hooked up a meter to his AM radio,tuned it in-between stations and would watch for variations in the strength in the noise as he drove along to locate mineralized soil or was it a deposit or oil,I don't remember. Pretty clever though for a seat of the pants idea.
Randy
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