Hi Vistac2000
You can build a 2 boxes. Go here
http://www.geotech1.com/cgi-bin/pages/common/index.pl?page=main&file=main.dat
and in metal detectors search for projects. See Deep-Seeking Metal Locator. This must be constructed very well and found better distance between 2 boxes. Here you can try different cores and adjust with capacitor. See the pic of depth you can achieve on "benign" soil.
You can build a 2 boxes. Go here
http://www.geotech1.com/cgi-bin/pages/common/index.pl?page=main&file=main.dat
and in metal detectors search for projects. See Deep-Seeking Metal Locator. This must be constructed very well and found better distance between 2 boxes. Here you can try different cores and adjust with capacitor. See the pic of depth you can achieve on "benign" soil.








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