kaolinwasher
Well-known member
[size=large]testing the 5.75 concentric & the DD in my mineralized gravel . found the DD is a lot quiter , As i had 12 stone giving a dig gable signal with the concentric and only one with the DD depth is same on both coils , the thin silver chane had no clasp or end on it just the chane only gave a good respons , now don't go getting rid of your concentric , as thou it was not a good coil , its just in the typ of gravel i have the DD works better , In the woods or farm field with no gravel and low minerals the concentric will do a lot better [video]https://www.youtube.com/watch?v=gS9EKa8rngc[/video][/size]