http://www.findmall.com/read.php?63,1001576,1003530#msg-1003530
Some of the older posts are no longer online but a slightly expanded (in proportion) relic pattern works wonders at unmasking good targets in iron. Without it the iron can overpower the non-ferrous signal making the iron all you see or hear. Some disagree but I have found it to be absolutely amazing, outperforming every other detector. You'll notice the same thing when you use a small disc pattern and then switch to pinpoint... sometimes the iron will takeover in AM pinpoint.You can also see it by using a relic type pattern, ferrous/2-tone and then switching to an open screen on QM... you will notice that you no longer will have interesting F/C numbers but instead you will have a high ferrous number indicating IRON.
Try it for yourself in a "hunted out" park... you'll see what I mean.
I agree totally with Andy... the E-TRAC benefits from some disc and suffers from no disc at all.
BYW, Iam really liking the SEF 8x6 and 12x10 coils... they are NICE!!!
Julien