Got a little "catch and release" detecting in at an archeological site today as a warmup for later this week. Tried the GF program recommended by Andy S. against my normal minimum discrimination program on some medium hot soil and both ferrous and non-ferrous targets. This is bad soil but still not as bad as Culpeper. Perhaps 1/4 to 1/2 up the bargraph. Cut grass field.
This is not scientific as I was limited due to this being more of a work site with cataloging etc. so I do not (ironically, considering the cataloging taking place) have video or pics but was able to do a couple side-by side comparisons of the Deus programs.
"Discrimination Program" (Frequency as described below, Disc at -6.4, Sens at 90, Rx at 2 to 2.5, Silencer 0)
"Gold Field Program" (Frequency as described below, Iron Audio Reject (IAR) = 5, Sens 90, Rx (as described), Threshold barel audible)
Flat Button at 5": Disc Program - not audible at either 14 or 28 khz, GF Program - audible but no target ID, 28 khz was a little louder
Gardiner Bullet at 5": Disc Program - not audible at either 14 or 28 khz, GF Program - audible but no target ID, 28 khz was a little louder
Square Nail at 7": Disc Program -Definite Iron Grunt at either frequency, Target ID = 00 or no TID. GF Program - IAR definitely broke up the iron signal. Liking the IAR as a means to ID iron (except as noted below)
Thick, round (2.5" diameter, 1/2 inch "tall" and 1/4" "thick") iron ring - Disc Program - Rang up a sweet high 80's, Low 90's tone depending on frequency. GF - Also rang up with similar TID and though Iron, did not break up with IAR. So the deus still gets fooled by those perfectly circular ferrous targets.
So I am like the GF program. It gives me a target signal, though at decent depths, no target ID and the IAR does a pretty good job at telling me whether I am hitting on a ferrous or non-ferrous target.
I will tell you, though. This outing was a warmup to get my Minelab GPX ears tuned in for an upcoming 3-day hunt and there is no doubt that the GPX rules in this hot Virginia Soil both on depth and ability to ID targets by tonal quality. I will be testing the Deus at Culpeper but my primary machine will be the GPX. I am really optimistic about the IAR giving the Deus a respectable showing in Culpeper, however.