I just got my new ATP the other day. I think something is wrong. I put a quarter in the grass sweep over it says 37-38 or sometimes nothing. The same with pennies and dimes. I've checked all coil connections.
Try it from about four inches away and see if it works better. High sensitivity can cause reflections around surface targets. I assume you ground balanced? Very unlikely it is the detector.
I just got my new ATP the other day. I think something is wrong. I put a quarter in the grass sweep over it says 37-38 or sometimes nothing. The same with pennies and dimes. I've checked all coil connections.