This post is mainly directed to UK field detecting where we have had social open air gatherings since Medieval times and on fields littered with coke. I used these settings yesterday and I was hopeful of finding at least one gold necklace / chain but alas none, better luck next time.
As most of us know it is almost impossible to find a fine gold chain with any metal detector and as it is a long story why but mainly due to Eddy Currents and the metal detector rejecting coke which fits in
I have found two tiny 10K gold chains at two different public school grounds. Both came in bouncing between +4 and +5 at 3" or less depth and had an almost crackly sound like aluminum foil sometimes does. I actually thought they were small foil targets but dug them anyway!!!! Park 1, tone break 2 was 1 to 10 with no other custom audio settings on the 800.
Jeff