Question for Andy about depth and large coil

[JohnnyI]

I'm still concentrating on a small area loaded with square nails, which exist at a depth of perhaps 4" inches down to 22". The usefulness of the six inch coil has been exhausted. I've been running in very close to all metal (ferrous) in an attempt to get some variable signal which might hint at a conductive object next to or beneath iron. Obviously I can't use the large 15 inch coil here...but..................

When hunting with NO discrimination using the 15" coil, is there a chance the detector will average out the mixed signal of ferrous and conductive objects together, giving me at least a hint of something conductive buried deep, or will the detector ignore completely the conductive object in favor of the majority of iron? Even being able to judge a hint of conductive among the mix would be useful.

I tried this yesterday, got a slightly less ferrous number on the reading (I believe it was a bounce between 17 to 27, which in this case was high...the conductive reading was meaningless) and dug a 22 long rifle shell which was completely invisible on any of the smaller coils, or with very low discrimination (33, 34 qnd 35 blacked out) I don't know if this was a fluke.

Again, my question is; When using the 15 inch coil (or any smaller coil for that matter) can the etrac average out the conductive and larger iron mix to give a hint that a conductive target is under the coil? I'm talking about in All metal mode only with no discrimination? Thanks

 

[NiagracountyNY]

Excellent question..I was reading in Andys book that when using all metal there is a chance of the Detector locking onto the Iron and Not being able to find the Good Target Next to it sometimes..If i read that right.I have always used all metal on my SE,and since i have the E-trac(1 week) i started using the discrim Do to andys book and everyones suggestions.Your question is excellent ,im looking forward to the replies.HH

 

[digitrich]

Mine does, I have dug nickles that hit between nickles and iron, but it repeated, so I dug it and it just ended up being deep. It has allot to do with your trash setting. If you are in all metal and set in to dense trash then the machine will lock on to the strongest signal that is not discriminated out. If you are running with iron barely discriminated out then the machine could lock onto the larger iron signal. So if you are running with no disc or very little, you might want to turn off dense trash.