I recently did a custom coin shooting program I really like searching for deep silver: park 1, multi frequency, 50 tones, Fe at 0 Fe2 at 0, recovery at 1, -9 through 11 notched out keeping 12 and 13, notch out through 17 keeping 18 through 40. I hit a clad dime today at 8 inches and realized I was running my sensitivity at 16 because of EMI! BTW, always run sensitivity as high as possible and ground balance before hunt. I am really starting to learn my Nox and am loving the versatility and depth