Performed some of my own tests with the Nox 600...and,

[John in Nawth Carolina]

Of course I was very impressed with the results. One thing puzzled me, though, it had a heck of a hard time detecting g a dime close to a bent nail. No matter the orientation of the nail, the dime had to be at least 2.5" to 3" away from the nail to get a signal.

This surprised me as it did so well with testing otherwise...

 

[Jason in Enid]

Thats going to be very tough for any detector. The deeper the target, the harder to distinguish them. did you try adjusting recovery speed and your sweep speed? Did you get ANY positive signal? did you try "wiggling" the coil slowly across the targets?

 

[tvr]

Search "Monte's nail board test" do some tests of your own, or watch some of the videos of people doing the tests.

 

[IDXMonster]

My CTX with 6” coil won’t pass that test either, it’s very eye opening to see how little it takes to make a machine of any kind “miss” a coin or not even respond. And...the response you might get is likely something you won’t dig anyway, really. If it’s one thing I’ve found out it’s this...when a machine starts really getting good at one thing, it really starts sucking at something else. At some point we have to have confidence that the engineers have made things as good as they can be. It’s interesting to see firsthand the limitations, but in the end there are limitations. In almost ALL cases of a coin being dug with nails in a hole, the coin was ABOVE the nails to begin with or the nail was far enough away from the coin for the return field to be picked up and reported, and you just saw how far away that has to be, with the settings you were using.

 

[BigTony]

Should we start digging nails again?

 

[goodmore]

The first question that comes to mind is what was your iron bias setting?

 

[John in Nawth Carolina]

The first question that comes to mind is what was your iron bias setting?

Park 1, original factory setings.