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Steve Herschbach

Fisher Impulse AQ Discrimination Explanation

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4 hours ago, Steve Herschbach said:

Hopefully LE JAG can give you a precise answer to that question.

I remind you that the IMPULSE AQ is not a coin shooter !

I just did a quick test in multi tone.

The size of the nails is proportional to the coins.

EUROS COINS.jpg

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I think some might miss one aspect of Alexandre’s post above - If I am not mistaken each “row” in the diagram shows what is rejected when the reject control is set at a level sufficient to reject (mute) the size nail shown in that row.

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In multi tone again. 

As you can see there is no hole in the discrimination and all these conductivities are accepted!

Limit 24K over 4grs

GOLD 2.jpg

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“Look ‘Ma - no holes!!!”

Seriously, this “bending” of the time domain curve is new and seriously useful for beach hunting for gold!

Also - note very carefully - Alexandre’s illustration above is not theoretical - he has verified the data he presents with the actual targets he has illustrated in the picture. 

 

 

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All these targets were found at the IMPULSE by me or Le.Jag
As a rule, I keep only the targets whose conductivity I don't yet have.

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Note to self...ask Alexandre to send me the finds which he doesn’t need to further his research!!! Lol

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Alexandre... Your chart is very encouraging! 

So... In All Metal mode 10K rings will be detected along with everything else.

By using some amount of discrimination, can 10K rings still be detected? 

Merci !

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47 minutes ago, ALEXANDRE TARTAR said:

All these targets were found at the IMPULSE by me or Le.Jag
As a rule, I keep only the targets whose conductivity I don't yet have.

a little precision anyway
he found the nails
and me the gold rings
:)

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7 minutes ago, okara gold said:

Alexandre... Your chart is very encouraging! 

So... In All Metal mode 10K rings will be detected along with everything else.

By using some amount of discrimination, can 10K rings still be detected? 

Merci !

yes, the lower the carat
the easier they are to detect in discri

a large 10 k signet ring is easier to take
the same in 22k / in rejection mode

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3 minutes ago, LE.JAG said:

yes, the lower the carat
the easier they are to detect in discri

a large 10 k signet ring is easier to take
the same in 22k / in rejection mode

Wonderful, ThankYou

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      Hunt, CP, Moskowitz, BM, and SK Banerjee. 1995. Magnetic Properties of Rocks and Minerals. In Rock Physics & Phase Relations: A Handbook of Physical Constants, Volume 3.
      Koch, C.B, Borggaard, OK, and A. Gafur. 2005. Formation of iron oxides in soils developed under natural fires and slash-and-burn based agriculture in a monsoonal climate (Chittagong Hill Tracts, Bangladesh). Hyperfine Interact 166, 579–584.
      Rivers, JM, Nyquist, JE, Terry, D.O., and W. E. Doll. 2004. Investigation into the Origin of Magnetic Soils on the Oak Ridge Reservation, Tennessee. Soil Science Society of America Journal, Vol. 68 No. 5 p. 1772-1779.
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