New PD

[WM6]

Originally Posted by J_Player

Thank you for a job well done.

Thank you J_P, I highly appreciate your opinion, for your invaluable contribution here.

We should not forget that ivconics "Zahori" was one of the first comprehensive LRL projects on Remote forum.

I don't know why up-loader shrink some picture, here one in original resolution over deposit file:

[J_Player]

Originally Posted by WM6

Thank you J_P, I highly appreciate your opinion, for your invaluable contribution here.

We should not forget that ivconics "Zahori" was one of the first comprehensive LRL projects on Remote forum.

I don't know why up-loader shrink some picture, here one in original resolution over deposit file:

Hi WM6,
You are correct...
Ivconic was the first to post a schematic for an experimental LRL project.
It was a brilliant project, which even Ivconic said was bogus... that it could only detect static electricity.
We knew it, but we continued to develop the circuit and explore the capabilities to see if there was any hope for this detector.
Even Carl-NC said: "this is a very interesting thread, and exactly what this forum is intended for. Thanks for all the contributions".
See here: http://www.geotech1.com/forums/showt...0957#post40957

This was a classic project that paved the way for future projects.
Since Ivconic's first project we have seen some very sketchy and poorly described LRL projects until now...
when we finally see the concise and well-done project that you posted.

Hopefully some readers can find a way to extend the range that you found and get the locator to find buried metal...

Best wishes,
J_P

[nelson]

Hi WM6

Many thanks for the information.
I will try after i finish my hammerhead and barracuda, that are on the bench.

Best regards

Nelson

Originally Posted by WM6

Hi Nelson,

if you or anyone wish to try, here all data needed:

I moded Security handheld metal detector model: LT-88B, producer ZhangFei, China.

Air core coils was replaced by on ferrite rod wound coil (following to keep the same inductance).

Coils data (measured at measuring frequency of 10kHz):

L1
Inductance L=1.0mH
Resistance R=1.2E
Impedance Z=62E
Quality factor Q=54

L2
Inductance L=2.5uH
Resistance R=0.1E
Impedance Z=0.18E
Quality factor Q=1.5

Wire used for both coils: enamelled copper wire 0.25mm (AWG30 or AWG31). I do not remember how many turns was wound, so you have to follow inductance, which is more correct, cause you very likely do not have the same ferrite rod.

Coils have to be tuned on maximal sensitivity by multi-direction moving both coil to reach the best position, then fixed and glued by composite resin.

R33, originally 3kOhm, was replaced by potentiometer (by which we can turn detector in Earth-magnetism sensor) of 100kOhm (look at picture).

That's all. Enjoy sensing our lovely Planet.

[g-sani]

Originally Posted by Geo

Hi George.
I am fine, you??
Next month i believe to finish with my farm so to "play" a little with the DCH.
After August 15 you can call me

Regards

Hi, Geo
Work should be anybodys priority.
I give you a call late August George
All the best

[J_Player]

Originally Posted by g-sani

Hi, Geo
Work should be anybodys priority.
I give you a call late August George
All the best

Geo has the real treasure is on his farm.
When people become hungry enough, they will trade their gold for food.

Best wishes,
J_P

[g-sani]

Originally Posted by J_Player

Geo has the real treasure is on his farm.
When people become hungry enough, they will trade their gold for food.

Best wishes,
J_P

I know my friend.
The way things go now in Greece it will be only farmers and shepards that they will survive.
Somebody should consider themselves very lucky to have friends like George for the days to come.
I am repairing the house up in my fathers village and I see myself as a former farmer in a smaller scale in the near future J_P.
Instead of fishing trout for fun we will fish them just to feed ourselves.
Regards
g-sani

[Geo]

Originally Posted by g-sani

Hi, Geo
Work should be anybodys priority.
I give you a call late August George
All the best

Hi George.
Now i am "free".
You can call me.

Regards

[Geo]

Now it is time to begin the modification of my "new PD". I constructed a new one with new coil but don't work as the first one. i have much work to do
I attach the photo from inside the PD.

[WM6]

Originally Posted by Geo

Now it is time to begin the modification of my "new PD". I constructed a new one with new coil but don't work as the first one. i have much work to do
I attach the photo from inside the PD.

Nice work Geo. I can saw some interesting black points inside.

[Morgan]

Originally Posted by Geo

Now it is time to begin the modification of my "new PD". I constructed a new one with new coil but don't work as the first one. i have much work to do
I attach the photo from inside the PD.

Good work Geo

Next time you visit my country bring this one,and we can make some test near the gold medalion. And then we will go to a search,some competition,your new PD and my PDK

Regards

[Geo]

Originally Posted by WM6

Nice work Geo. I can saw some interesting black points inside.

With black points it has more interesting

[Geo]

Originally Posted by Morgan

Good work Geo

Next time you visit my country bring this one,and we can make some test near the gold medalion. And then we will go to a search,some competition,your new PD and my PDK

Regards

Hi Morgan. You live at a fantastic beatiful place but it is very far to visit it again. Maybe it is time for you to visit Greece. Does Alonso's PD works on winter??? if yes then i will send to you a clone for test and maybe myversion of PDK.

Regards

[Fred]

Originally Posted by Geo

With black points it has more interesting

I am convinced that there is no IC below the black points, as the more they are, the more interesting it looks too.
Maybe a CPU would look nice, or a LCD, as Mineoro do, it´s just a voltmeter but definitely looks hi-tech.
I you douse one, please be modern and use the blue ones.
Mineoro look vintage.

[Morgan]

Originally Posted by Geo

Hi Morgan. You live at a fantastic beatiful place but it is very far to visit it again. Maybe it is time for you to visit Greece. Does Alonso's PD works on winter??? if yes then i will send to you a clone for test and maybe myversion of PDK.

Regards

Hello Geo

The PD works even better when soil is wett after the rain.Now i´m more concentrated in my PDK,i think is the Best of the Best in LRL´s.
You can send for test all the LRL´s you want(not forget to seal the LRL box,you know my curiosity...),i can do this for you,and if you want,post results here in the forum.


Regards

[Morgan]

Originally Posted by Geo

Hi Morgan. You live at a fantastic beatiful place but it is very far to visit it again. Maybe it is time for you to visit Greece. Does Alonso's PD works on winter??? if yes then i will send to you a clone for test and maybe myversion of PDK.

Regards

I have more places to test LRL´s,many buried objects 100m from my home,most of them silver buried with salt,more than 2 years ago,already very good to test LRL´s. Unfotunatly each time i take one MINEORO for the LRL test,its allways frustrating,but i still believe this devices can find something but big.

[Geo]

Originally Posted by Fred

I am convinced that there is no IC below the black points, as the more they are, the more interesting it looks too.
Maybe a CPU would look nice, or a LCD, as Mineoro do, it´s just a voltmeter but definitely looks hi-tech.
I you douse one, please be modern and use the blue ones.
Mineoro look vintage.

Hi Fred.
Yes there is not an IC. There are some notes...
Next time i will use blue color if you prefer it

Regards

[Geo]

Originally Posted by Morgan

I have more places to test LRL´s,many buried objects 100m from my home,most of them silver buried with salt,more than 2 years ago,already very good to test LRL´s. Unfotunatly each time i take one MINEORO for the LRL test,its allways frustrating,but i still believe this devices can find something but big.

If it is some big and old then ofcourse Mineoro can locate it under some conditions. But you can do it more easy and cheaper...

Regards

[Morgan]

Originally Posted by Geo

If it is some big and old then ofcourse Mineoro can locate it under some conditions. But you can do it more easy and cheaper...

Regards

Yes,i know