The last few hunts I spent at a park where the good stuff is real deep 8+ inches. I wanted to test the depth capabilities of the AT Pro. Well it passed with flying colors. All I was digging were the very faint repeatable high tones. All the coins I found were well over 8 inches. Along with the silver dimes, I dug 13 wheat pennies, 3 indian head pennies and a buffalo nickel which was strange because it gave me a high tone? it was also the deepest coin at a solid 12 inches. I honestly have to say this is the deepest single frequency machine I've ever used, and I've used quite a few.
HH Butch NY
HH Butch NY