Neil in West Jersey said:
OK, so I took my DFX, and put it in my custom program, which will accept any target above a small nail, (-40 VDI on the XLT, Spectra, and DFX). I placed a steel cent on the ground and got nothing. The Signagraph was very close to iron. I had my Display Discrimination ON, so I did not get a VDI reading, but I would estimate that it was close to -80, which is very ferrous. What the heck were you looking for? Iron?? I use very little discrimination and I would never have even considered digging this target!
Anything underground.
I don't have a fancy metal detector by any means and the BH Quick draw II has picked up several things in the past that a friends Garrett didn't. My guess is that the MINIMAL discrimination of the BH is the key to that.
As I said, I get way more tabs, and caps than I do anything else, and I get teased about it, but I also find a lot of great things as well. Gold, silver (jewelry and coins), and other assorted items...
I haven't gotten to the point in my tenure as a MD (~10-12 years) that I try to avoid "trash". I'd rather dig and see what I've discovered than swing all day for nada. I've been known to keep pull tabs and such for quite a while before I toss them in the scrap metal barrel. My wife is pretty close to correct when she says I'm OCD about getting things that are buried. :P
Tomorrow I'm hunting an old home place that allegedly has never been hunted before, I'll have sensitivity at around 2:00 and no discrimination; yep I'll dig "junque" but I'll love every minute of it.
HH,
Grip