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Re: PULSE DETECTOR DEPTH
Posted by: 6666
Date: May 09, 2018 09:20AM
And just how did you get hold of one of these Fisher Manta's ?

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: May 09, 2018 12:53PM
Quote
6666
And just how did you get hold of one of these Fisher Manta's ?


I test the cards, for Alexandre
the engineer (French) who imagined manta

http://www.mantametaldetectors.com/about/

+ a video of 2016, the latest version is even better

https://www.youtube.com/watch?v=G8sdp4RG73g

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Re: PULSE DETECTOR DEPTH
Posted by: Digger70pa
Date: May 10, 2018 06:40AM
That's amazing. Now we need a relic machine for land hunting.



From The Great Appalachian Valley Minelab Fisher Teknetics Whites Garret detectors.

Re: PULSE DETECTOR DEPTH
Posted by: OnTheBeach
Date: June 02, 2018 12:02PM
Quote
LE.JAG
...................................

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

Would small lead fishing weights be a good universal test target to give an idea of what depth a detector will find gold?

The small round ones I find weigh approx 1.63 grams. If that's too heavy then I'd think they could easily be cut in half. They could be easily hammered flat if necessary.




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Re: PULSE DETECTOR DEPTH
Posted by: lytle78
Date: June 02, 2018 03:23PM
Try a standard Bic plastic ball point pen medium tip - small brass tip with 1mm tungsten carbide ball. Steve Herschbach has used it for years as a standard for testing gold detectors - also easy to stick in the sand and hard to lose. - and, of course available everywhere.

Google Steve Herschbach bic pen and read what he has to say about it. It apparently behaves a very low conductive target. It presents in interesting test of the cut-off setting of a detector with iron discrimination - Might ve interesting for Manta

Here’s the results one guy got with his nugget detector on various targets (the POINT - lol - is to show how tough a target the pen tip is....)

”Bic Pen-3/4" 1/2 Grain (not gram) nugget 1" 1.3 gram nugget 5" . One tenth oz gold coin 8 1/2"..



Rick Kempf

Re: PULSE DETECTOR DEPTH
Posted by: timmysys
Date: July 29, 2019 06:02AM
Le JAG:
What is the garbage/ good target rate usually with Manta?



Edited 1 time(s). Last edit at 07/29/2019 06:04AM by timmysys.

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Re: PULSE DETECTOR DEPTH
Posted by: LE.JAG
Date: August 14, 2019 06:21AM
Quote
timmysys
Le JAG:
What is the garbage/ good target rate usually with Manta?


sorry for the delay, I had not seen this post ..
I do not dig iron
unless I clean an area

it's hard to give a figure / something is on
you will dig much more lead
stainless steel, brass, aluminum ...

since it is deeper than the others

and automatically = more gold
which is often at the bottom
there is much more gold under the sand than most can imagine

my last outings



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

( sorry for my english )




Re: PULSE DETECTOR DEPTH
Posted by: Jim in Idaho
Date: August 14, 2019 07:44AM
I did both of Reg Sniff's suggested mods to my 2013 model TDI SL. I also use a 16v battery pack. I was testing it yesterday on pieces of nickel. I buried a 1 gram piece at 6", and a 1.84 gram piece at 10". The TDI saw both with the 7.5"DF coil, and the 8 x6 NF Sadie coil. The 12"DF coil could only see the 1 grammer....same for the Super Pulse 14" 350. The signal on the 1.84 grammer was faint, but repeatable. I'd definitely have dug it in the field.
Jim

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