An old LRL based on large coils
In the 1950s I had a friend who was always experimenting with alternative science projects. One of his was a dual coil device that he was shown by a friend of his that used to stop by and see him His friend was finding gold deposits using a dual antenna system plus a low frequency transmitter with probes stuck in the ground. The antennas were about 2 feet on a side. I'll try and draw and post below. Please don't ask me for details as what is in the diagram is all a remember.
Goldfinder
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