"False signals" are primarily caused by "ground noise," or "ground effect," i.e. using too high a gain setting for the soil conditions and/or being out of proper ground balance. In my soil (average soil reading 79) I can use a maximum of +1 gain with the stock 950 coil. Actually, that setting is a bit too "hot," inasmuch as I do get a bit of false signals. A gain of 10 would cure it, but I tend to be willing to accept a bit of instability for the sake of greater depth. When using the 10x6 DD, I can use a gain of +3 with stable operation. At those settings, as described, I can get dimes to a measured 9", nail-level reject, C & J mode. Some folks were the soil is more agreable report getting dimes to a measured 10". For the sake of optimum performance, always use as much gain as the soil conditions will allow, but don't overdo it. One thing to remember with false signals is that they tend to be non-repeatable, and also "move around," and are not produced ove the same exact spot with each pass of the searchcoil. Where are you located? There are not many areas with such high mineralization readings. Many of the western states have high mineraliztion, but so do some of the eastern ones, especially VA. HH Jim
