Hi,
I am holed up because the ground is frozen, and being bored, was air testing my stock 10" DD on my v3i the other night. When I had a particularly startling discovery. I had my detector set to 5 band, 3 frequency, correlate with a -94 wrap and a 28 span. And when I took a whole handful of silver coins and swept them, my detector completely discriminated them out. I got no signal at all. What was happening is the 22.5 and 7.5 frequency was wrapping around to the negative and I had to adjust my span all the way to -93 before I could get any kind of signal. Even getting a signal the 22.5 and 7.5 frequencies were still show up as red and negative on the spectragraph. Of course you don't have this problem in best data.
My conclusion is be careful when using correlate to discriminate in ground infested with iron because you could be missing that cache of coins or even a coin spill. I just thought others might be interested in my findings.
FreeMindStuck