Etrac nulls out if I stack two silver quarters??

[Bugalooob]

I thought this was strange, then I jumped to all metal and saw it was hitting 0-48....0-46 to 0-50 is blacked out on stock coin program, why is this??

 

[christopher-ohio]

n/t

 

[utahshovelhead]

Hi Bug,

Now try it on a silver dollar and see what happens it both stock and AM.

Good to know aye?

utahshovelhead

 

[rbholt80]

they were trying to eliminate false signals that come in in that area for the new users. Just open that area up go out in the field. You will probably dig a bunch of iron but once in a blue moon you'll hit that spot and get something good. most of the time you wont. but thats what companies do now days. They try to make it simple for the beginner. You know the old whites commercials at night they told you that you could turn it on and go in your back yard and find lost treasure. All detector brands try to make it easy for sales

 

[TheMarshall]

I thought this was strange, then I jumped to all metal and saw it was hitting 0-48....0-46 to 0-50 is blacked out on stock coin program, why is this??

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[size=large]Hello Bugalooob[/size]

Minelab's small disc section you mention in the Coin pattern, is there by necessity but not ideally so..


I suspect that it is because of an intrinsic effect called 'Phase wrap'.

It occurs with most detectors when you run them at high sensitivity, but manifest itself as erratic audio and-or random VDIs.

Large pieces of 'flat' iron, at depth, and/or such targets in association with deeply water soaked soil, may cause such readings.

The chances of getting a genuine coin ( i.e. silver dollars etc) with Fe 0. Con 46 to 50 to produce those readings in soil are so rare, that Minelab may have taken the option of creating a coin pattern that limited the 'Fe zero' syndrome.

Any 'pure' silver coin with a thickness of about 3 millimetres or more will have an Fe value of zero. Thickness is the dominant factor.

Readers may recall a post-thread of several days ago, on these very same phenomena.

Let's call it Ghosting....Fe Zero and random Con values.....Usually with no accountable target.

I have mentioned this effect in my E-Trac articles currently running in the UK's premier detecting magazine, ( Treasure Hunting )

I also published a proposed pattern to combat the effect wherever it becomes troublesome, especially so if you are 'over sensing' your detector.

It's called 'The window' pattern.

It

 

[The Beep Goes On]

Thanks TheMarshall. I've used something very similar, but leave 1-40 to 1-48 open for big silver (if I should ever be so lucky). The patter I've used is like your first pattern with the open area I mentioned and no left side dicrim; only bottom, right and partial top.

Beep

 

[Bugalooob]

I was checking some other etrac forums and franklin halfs sometimes show up in that area