Hello coinhunter. I just got back from Lincoln park. did about a two hour and forty minute hunt with the atpro. I hit the totlot and up around the pool parking lot a little bit. I have the 6.5x9 coil on mine. I hopped back and forth from pro to standard modes trying to get a read on this machine.It does go deep. small nail at 10 inches. I can't give a whole lot of info on this machine. I started with the ace250 in June of last year so the atpro is gonna take me awhile to get the hang of. I can say that in standard mode a zinc penny will more often then not come in under a medium tone TID between 74-78 and a copper penny will give the high bell tone from 80-82.. I have about 8 hours on the atpro and have found ,one token,one diamond stud earring,A gold four leaf clover with a blue stone, 3 wheats 28,34,51,(81clad coins(bout 4.00).I was up in Galion at one of the parks weekend before last and hit a couple deep targets but the ground was to frozen in that area. ( I'll be back). I found several other pieces of junk jewelry. Coinhunter you have been hunting awhile and I am sure you have used a few different detectors so you will probably learn the atpro pretty quick. I can sure use a few pointers once you do. I want to talk to you about a hunt once the weather gets squared away (old park closed in late seventies or early eighties. was established in the twenty's) If your interested I'll get with you closer to the end of spring. Oh congrats on the atpro. I barely know mine but I already love it!
......Good for you !!!.....Jim