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PULSE DETECTOR DEPTH
Posted by: daverave
Date: November 05, 2015 03:47AM
ive seen a video showing a tdi pro detecting a nickle at 18" would that be a loud signal or a whisper or slight change on threshold or strong signal ???

Re: PULSE DETECTOR DEPTH
Posted by: doc holiday232
Date: December 03, 2016 01:29PM
low but a dig me signal.

Re: PULSE DETECTOR DEPTH
Posted by: Tony
Date: December 04, 2016 04:44AM
More like a phantom signal.

I have tested a US nickle with a GPX5000, Deepstar and some other high powered PI detectors.....maximum is 15" and this is a very soft signal.
This is also on pristine white sand beaches with no EMI for 50 miles.

I refuse to believe 18" unless I saw it for myself. Most of the time the "coin signal" is falsing......listen for all of the other "coin signals" adjacent to where the coin has been buried. More often than not, the operator will not sweep around the area to gauge falsing or EMI but will sweep a very tight spot to where the coin is buried.......anyone can get a "signal".

Regards,
Tony



Edited 1 time(s). Last edit at 12/04/2016 04:45AM by Tony.

Re: PULSE DETECTOR DEPTH
Posted by: metalpopper
Date: September 10, 2017 09:07AM
Quote
Tony
More like a phantom signal.

I have tested a US nickle with a GPX5000, Deepstar and some other high powered PI detectors.....maximum is 15" and this is a very soft signal.
This is also on pristine white sand beaches with no EMI for 50 miles.

I refuse to believe 18" unless I saw it for myself. Most of the time the "coin signal" is falsing......listen for all of the other "coin signals" adjacent to where the coin has been buried. More often than not, the operator will not sweep around the area to gauge falsing or EMI but will sweep a very tight spot to where the coin is buried.......anyone can get a "signal".

Regards,
Tony[/quote

**************************************

Tony,I agree with you, in the belief that whatever the video was supposedly showing, it was not a nickle causing the response....matt


Re: PULSE DETECTOR DEPTH
Posted by: cjc
Date: September 12, 2017 04:29PM
decent signal--its a beast. problem with this machine is stabilizing it at the higher settings that give that kind of performance.
cjc

Re: PULSE DETECTOR DEPTH
Posted by: Tony
Date: September 15, 2017 06:39AM
A few years back, I challenged someone making these 18" claims to find some targets for me.

I marked out an area of 10m x 10m on a pristine section of beach (even well away from the wet sand so that the pulse delay could be dropped down) and informed him that I had buried 5 targets at 18" depth. Unbeknown to him, I had only buried one target at 15".

Well now, you have never seen so many holes dug looking for all of those "definite" targets.......looked like a minefield afterwards.

Total targets dug = 0
Total holes filled = 17 :rolleyes:

....Yep.

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: September 15, 2017 08:09AM
Hi,

what type of targets do you use
I test in this moment the last prototype Fisher / manta

I have never had a more stable PI
at 7us I can lower the SAT to less than 10% on wet sand
the more compact it is, the smoother the signal

18 inches = 45 cm // is possible, everything depends on the target and the metal
with the old version, I had obtained big rings 18k 15/20 gr
at about 40cm = 15.5 inches

we would need one or more targets
that everyone can find, anywhere in the world
low conductor, of course
someone has an idea for the target



Fischer--Aquamanta // Pulsepowers Goldscan 5C // Nexus coronado // Vista Gold

( sorry for my english )

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Re: PULSE DETECTOR DEPTH
Posted by: lytle78
Date: September 15, 2017 02:13PM
The US 5 cent piece "nickel" is a pretty good standard. Rings are hopeless - no two are alike.



Rick Kempf

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: September 15, 2017 06:46PM
according to wikipedia, your current 5 cent
are composed of 75% copper and 25% nickel

years ago especially to have 100% nickel ?

-- this is important for testing because with 7us of delay
performance is really optimized, on low conductors

one finds less jewels and silver coins (observation)
but more gold ..... :)

(our former Franks was 100% nickel for some
I have already obtained pure nickel
has more than 15 inches ....)



Fischer--Aquamanta // Pulsepowers Goldscan 5C // Nexus coronado // Vista Gold

( sorry for my english )

Re: PULSE DETECTOR DEPTH
Posted by: Tony
Date: September 15, 2017 08:36PM
Test target used was a US nickel.....

Big gold rings (as described above), then 15"-16" is definitely attainable.

Tony



Edited 1 time(s). Last edit at 09/15/2017 08:38PM by Tony.

Re: PULSE DETECTOR DEPTH
Posted by: Carl-NC
Date: September 16, 2017 09:56AM
Quote
LE.JAG
according to wikipedia, your current 5 cent
are composed of 75% copper and 25% nickel

years ago especially to have 100% nickel ?

US nickels have always been 75% copper. Canadian nickels were once 100% nickel.

Re: PULSE DETECTOR DEPTH
Posted by: markg
Date: October 20, 2017 09:12AM
I might add one small bit of information:
The majority of gold rings manufactured are for women.
Most of the women's gold rings are thin.
The higher the gold content the lower it will read.
The majority of lost rings will register at and below a nickel.
On the other hand the honker class rings read high.
For me, I've found 1 class ring per 33 women's rings found.
That is 97% of the rings I've found are thin, women's rings.
I never pass up a nickel signal, never..........

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: October 21, 2017 05:42AM
Hello,

This is also my opinion
the 7 us calibration of the Fischer prototype
makes it possible to obtain many more fine rings
rings that are not seen by other machines

the depth is subjective, depends on the compact sand or not
and salinity, but anyway it is very deep :)

18k only on the photo, the most common carat in France
the 14k and under will be easier to take ....



Fischer--Aquamanta // Pulsepowers Goldscan 5C // Nexus coronado // Vista Gold

( sorry for my english )




Re: PULSE DETECTOR DEPTH
Posted by: Tony
Date: October 22, 2017 06:31AM
7uS is not really practical on any part of the beach....even the "dry sand" will have some dampness several inches down and a moaning/groaning threshold will be present.

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: October 22, 2017 07:20AM
everything depends on the sand
on the airy, waterlogged sand, a little noisier
just lower the sensitivity or swept slowly

on the compact even wet I'm really 7us

Alexandre to work a lot on the '' capacitance''
it's the PI, the most stable and especially the quietest I've ever seen ...

--and in reality, the proto works at 6.5us
7 will probably be retained for the series



Fischer--Aquamanta // Pulsepowers Goldscan 5C // Nexus coronado // Vista Gold

( sorry for my english )



Edited 1 time(s). Last edit at 10/22/2017 07:22AM by LE.JAG.

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