Frank I understand what your saying, the information Garrett puts out says the ATX functions in one mode for all depths the way I read it, without having to change programs.
I was hoping to find something with some depth but I only worked a small area, still that possibility may happen.
There are three size of coils available for the ATX, it come with a 12" DD and it is sensitive to small gold.
I've beat that patch to death with a Coiltek Platypus DD, found the patch with that coil, also a 17" El DD, a 19" Rd DD and two Joey's, a DD and a mono.....found gold with all the coils. There is an area there about an acre in size that has knee high weeds that may still hold some descent pieces. My last two piece were both .2 grams each, with the Joey mono.