Xtrem Hunter

[ZOUjiarui]

hello pito, how did you do it, is it the same configuration as the DD coil, or a different method

[pito]

Principle is the same as concentric coils except that Rx coil is on the side of Tx.
Compensation coil has 5t and is connected in series with Rx coil.

[ZOUjiarui]

Hello, is the compensation coil directly wound 5 times in anti-phase on RX?

[pito]

On the right, coil Tx , L1 = 180t, L2 = 5t on top L1.
On the left coil Rx, L3 = 300t.
L1 and L3 are connected in series, changing the distance between the two coils, we are balancing the coils = minimum voltage on Rx.

[Riss]

Ivconic , please translate into Serbian my posts 65 , 67 , 71 on Orbit . Explain to him that there is a difference between a nickname and a name . Еxplain to him that Riss in Bulgarian language is the animal lynx (на бугарском је животиња Šipak ). such a Bulgarian name ( Ris or Riss ) does not exist … my avatar shows a lynx . Тhere are a few spelling mistakes in Bulgarian on the smartphone . Иt appears from the smartphone screen (#74 01.09.2023 г., 20:43 ч ) that Orbit write in perfect Bulgarian … but - according to #72 Orbit is either Croatian or Serbian … explain to him - slowly, comprehensibly and repeat it to him at least 10 times , that 3 years ago I gave the idea with valuable advices regarding making a pulse induction detector 2 boxes type on Commander (#65
01.09.2023 г., 07:07 ч ) . Commander not a name(such a Bulgarian name does not exist ) but a nickname . i said i haven't talked with Commander , and on the smartphone screen Orbit claims I called the same day ( 01.09.2023 ) ! Тo clarify- with Commander I know each other personally since 2015 , and Vladimir Lilov - the owner of the "Golden Mask" brand I know personally since 1997 . Dozens of links for the Valchan voivoda (wolf chieftain ) are Bulgarian. Ivconic , please explain to Orbit that these links are a discreet prompting ( suggestion ) to metal detector manufacturers that there is a market – demand ( hunger ) for hoard metaldetectors in all the states of the former Roman Empire- Bulgaria, Serbia, Turkey, Greece, France, England and many others…

[ivconic]

Guys... I'm turning 57 in a few days and I'm really tired of similar discussions on the forums.
If you have something unresolved between you; work it out in person, p2p.
Life is too short to waste on unimportant things.
Look at the world we live in!
There are so many more serious problems in the world to think about.
And you waste time, energy and forum space on such irrelevant nonsense.
Forgive me, both of you, but I refuse to participate in such stories.

[Riss]

Thanks Ivconic, but there's nothing personal between us .Orbit tried to create a virtual reality…
On the subject : there are many requirements for the detector to be effective in searching for hoards
- insensitivity to small surface targets - coin detectors are dropped out, except those with probes greater than 60 cm

[moodz]

.. so I am not sure if Russia has a patent system but they sure like putting out detailed technical papers on new technologies.

I found a 2021 paper from
Department of Mechatronics and Automation, South Ural State University, 454080 Chelyabinsk, Russia

Its a "new" type of sensing system that gives very deep detection with discrimination.

Here is a result from the paper .. The depth achieved is quite impressive at 3.5 meters with 25% chance of error. ( discrim and depth/size indication )

It would seem like a good candidate for hoard detection.

What is even more interesting is that I already have the electronics for this system. I will let you know some results shortly.

[Skippy]

Detecting a 10mm x 10mm ( 100 mm² ) object at 3 metres ?

[Orbit]

Says it's PI using half-sine pulses. I don't understand why the coils are spaced apart; with both of them horizontal, the maximum depth is achieved when the coils are concentric.

Yes, I agree about the configuration of the coils! The only reason is easier carrying while working with the device.

[Orbit]

The constructor of this device claims that this Russian Pi detector is an older military model detector with the same good depth. I have not personally tested it, I just found this, so take a look.

https://metaldetector-fau.com/fau-pulse.htm#&panel1-1

[ivconic]

.. so I am not sure if Russia has a patent system but they sure like putting out detailed technical papers on new technologies.

I found a 2021 paper from
Department of Mechatronics and Automation, South Ural State University, 454080 Chelyabinsk, Russia

Its a "new" type of sensing system that gives very deep detection with discrimination.

Here is a result from the paper .. The depth achieved is quite impressive at 3.5 meters with 25% chance of error. ( discrim and depth/size indication )

It would seem like a good candidate for hoard detection.

What is even more interesting is that I already have the electronics for this system. I will let you know some results shortly.

This confirms everything I heard and recounted here about "Korshun".

[Altra]

Detecting a 10mm x 10mm ( 100 mm² ) object at 3 metres ?

Good point. Maybe it should be CM?

[Orbit]

Good point. Maybe it should be CM?

Greetings Altra !

[Altra]

Greetings Altra !

Greetings to you also!