Tones are important , the ones to use are 4 conductive tones as show with the these frequency's Lowest tone set at 230Hz for the first tone section on the left of the screen , the second tone section from the left 414 Hz , then the narrower third tone section from the left 637 Hz and finally the highest tone set to the far right tone section I have set at 1091 Hz. With these settings it becomes easy to hear the higher conductive coins that are often deep from the lowest conductive targets on the 230 Hz low conductor section , so far every low tone has been rubbish , I have dug a lot of low tones too. Not to say a low tone is always junk but 99% of these signals are junk for sure.