I always raise my coil to check the size of the object and to find the faintest signal to make pinpointing easier. During this procedure, I began to notice a pattern that has sparked my interest. I call it the ratio of coil height/target sustainability. I have been testing with the discrimination set at minimum, but have gone as far as foil. I don't use foil setting unless I'm primarily coin hunting for fear of missing small rings. Basically, it works out like this: coins(yes, pulltabs,too) will maintain their repeatability all the way out to their faintest signal as you lift the coil higher and higher. As it usually takes two or three sweeps anyway to pinpoint, I can do two things at once-pinpoint at it's weakest signal and notice the quality of the signal. Even masked coins with the stutter sound in front of them will be retained at quite a distance. The interesting things are tiny foil and junky items: they either disappear or break up more as you lift the coil.. After a while you begin to get the idea and am now storing this ratio of coil height/repeatability to the different signals I find and am trying to build a foundation. I know one thing-when something stays repeatable and clear all the way out to the fringe of detection-it's usually a coin or a metallic object with density and conductivity(high)
. The Silver even talks that way in it's all metal mode on some nails and iron. I was also lucky enough to find a small necklace by eyeballing and the Silver will respond to some small ones-just not the fine tiny ones. And that's another subject in itself-I never watch the coil while I'm detecting-I'm always looking around the area I'm in while the body is in autopilot scanning the coil.