smithobx
Member
I WAS WOUNDERING IF THERE WAS A WAY TO ESTIMATE THE INCREASE IN DEPTH ONE WOULD GAIN FOR A GIVEN INCREASE IN COIL SIZE? For example, if you replace a 8.5 in. coil(56.7 sq. in. of area) with a 12.5 in. coil(122.6 sq. in. of area) you have doubled the size of the coil, but what percentage have you increased potential depth? My guess is 20 percent, if that much, or about 1.5 inches. Has anyone bench tested different size Garret coils on the same detector? Keep Swinging---John