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I use two electrodes of 2m long buried underground, 100m apart and oriented 285°. I feed an usb sound card UMC202HD from Behringer and decode with spectrum lab. Very noisy here in Brittany France due to proximity of a water pump station and the speed controller regulators radiating a lot of interferences as one can see on the picture. Anyway a faint signal was decoded.
73’s Jean Marie F5VLB
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