Actually it's a couple of questions.
I've been hunting a place where there is a good possibility I could find some older coins (in continuous public use since the mid-1800's), but am not doing that well. I'm finding plenty of coins, but they're all modern, and they're all deep. I've been digging clad quarters, dimes, and pennies at 6" to 8". I've dug a total of two wheat pennies so far, both were 8" deep or so. There doesn't seem to be an excessive amount of trash, but there do seem to be a fair number of deep iron signals. There doesn't seem to be much of anything in the top 3" or 4", other than an occasional coin laying right at the surface.
I'm using the "Coin & Jewelry" program, with the discriminate sensitivity at 90, all metal at 75, gain around 7, recovery delay at 80, filter at 10 high, with the stock D2 coil.
The first question is, are those deep iron signals trustworthy as being iron, or should I be digging them? Most are jumpy and will null out from one direction or another, but ping up into the positive VDI range from some other angle. I've tried flipping to the "Deep Silver" program to check them, but the signals don't seem to change much.
The second question is, would switching to the Super 12 coil be an advantage in this scenario?
I've been hunting a place where there is a good possibility I could find some older coins (in continuous public use since the mid-1800's), but am not doing that well. I'm finding plenty of coins, but they're all modern, and they're all deep. I've been digging clad quarters, dimes, and pennies at 6" to 8". I've dug a total of two wheat pennies so far, both were 8" deep or so. There doesn't seem to be an excessive amount of trash, but there do seem to be a fair number of deep iron signals. There doesn't seem to be much of anything in the top 3" or 4", other than an occasional coin laying right at the surface.
I'm using the "Coin & Jewelry" program, with the discriminate sensitivity at 90, all metal at 75, gain around 7, recovery delay at 80, filter at 10 high, with the stock D2 coil.
The first question is, are those deep iron signals trustworthy as being iron, or should I be digging them? Most are jumpy and will null out from one direction or another, but ping up into the positive VDI range from some other angle. I've tried flipping to the "Deep Silver" program to check them, but the signals don't seem to change much.
The second question is, would switching to the Super 12 coil be an advantage in this scenario?
