Tribute to Andy Flind

[Esteban]

and EPE magazine, the publisher of the Magnetic Field Detector :). Andy don't imagine that somebody can use this for locate treasure at 70-80 meters and depth, a coin at 15 m in distance and 1 m depth!

This can be renamed as "Magnetic Flind Detector". My deep gratefulness because a friend found treasure with it. And other people too. And other persons found different objects but no yet a treasure. Andy has reason when he use these words "hot spots". Treasure are hot spots!

[detectoman]

the ocaso of the sceptic is near!
they should accept

[peroon]

Viva la vida loca!! :lol::lol::lol:

[hung]

Hi Esteban,

Great contribution of yours bringing the name of Andy Flind in this forum.
I did not know much about him and now I start to do trough your posts.

About 3 to 4 years ago, in some forum, I could read a post of a guy from US who used to work for the government regarding special projects. This one dealed particularly with INDUCTION and special devices built to locate oil for oil companies. He told how he and his partner could map the exact location of oil and also comented the amazing look in the faces of the company's in charge personell when they were proven exact.

He told that not exactly the magnetic field, but 'old' plain induction could do marvelous and unbelievable things.
His description of the device made me implement many elements for my own project.
***********
PS. My friend started his travel back home yesterday morning after his trips to the Rain Forrest region, Central of Brazil and Paraguay. In a quick radio contact with me he said he's got lot of news.
If I find I can tell it here or if it's relevant I will do. Otherwise I will PM you.

Best Regards.

[Esteban]

Hi Esteban,

Great contribution of yours bringing the name of Andy Flind in this forum.
I did not know much about him and now I start to do trough your posts.

About 3 to 4 years ago, in some forum, I could read a post of a guy from US who used to work for the government regarding special projects. This one dealed particularly with INDUCTION and special devices built to locate oil for oil companies. He told how he and his partner could map the exact location of oil and also comented the amazing look in the faces of the company's in charge personell when they were proven exact.

He told that not exactly the magnetic field, but 'old' plain induction could do marvelous and unbelievable things.
His description of the device made me implement many elements for my own project.
***********
PS. My friend started his travel back home yesterday morning after his trips to the Rain Forrest region, Central of Brazil and Paraguay. In a quick radio contact with me he said he's got lot of news.
If I find I can tell it here or if it's relevant I will do. Otherwise I will PM you.

Best Regards.

Hi Hung

Andy was a genius, like others today alive. He publish his circuits and ideas in EPE.

Ok, let me know.

Regards

Esteban

[hung]

Hi Hung

Andy was a genius, like others today alive. He publish his circuits and ideas in EPE.

Ok, let me know.

Regards

Esteban

Hi Esteban!

My friend and team member returned from his trip and I talked to him today.
He could locate some treasure sites believed to exist in a section of Central region along a Jesuit trail. He clearly confirmed this trail.
I'm very happy for him and his group. As soon as I have time I will email you with details.

Best regards.

[Esteban]

Hi Esteban!

My friend and team member returned from his trip and I talked to him today.
He could locate some treasure sites believed to exist in a section of Central region along a Jesuit trail. He clearly confirmed this trail.
I'm very happy for him and his group. As soon as I have time I will email you with details.

Best regards.

Hi Hung

Near important Jesuitic locations always people found treasures, ALWAYS.

[Esteban]

Andy use a simple transformer as sensor. Here is a coil 30 turns in diameter 16 cm, wire 0.35 mm. A preamp is necessary.

[Fred]

For you Esteban:
http://www.epemag3.com/index.php?option=com_docman&task=cat_view&gid=61&Itemid=38

2 projects, one in 2 parts.

For everybody, :
http://www.epemag3.com/index.php?option=com_docman&task=cat_view&gid=55&Itemid=38

:D

[Fred]

BTW, this project is probably the best LRL that has been described, will show target with a meter, and the article even gives explanations of the transistros burnind.It even shows a solutions against it.
As it is public domain i think it is ok to put it here:

[hung]

Hi Hung

Near important Jesuitic locations always people found treasures, ALWAYS.

Esteban,

He did.
He found four sites and pinpointed it with the Tyon.
His group used Mineoro's CM80 two box also (one hell of a great machine) to confirm one location, but when they were upon the second one, the oscillator transistors got burned due to the intense fields.

Same thing happened to those couple of two box detectors in that huge treasure site remember?

I will email you all the details tomorrow. Must sleep now.
By the way, I will talk to you about Andy Flind's MFD.

Tchau amigo.

[Fred]

... but when they were upon the second one, the oscillator transistors got burned due to the intense fields.

Cool,
That´s so "Fashion" :cool:

[Geo]

and EPE magazine, the publisher of the Magnetic Field Detector :). Andy don't imagine that somebody can use this for locate treasure at 70-80 meters and depth, a coin at 15 m in distance and 1 m depth!

This can be renamed as "Magnetic Flind Detector". My deep gratefulness because a friend found treasure with it. And other people too. And other persons found different objects but no yet a treasure. Andy has reason when he use these words "hot spots". Treasure are hot spots!


Hi Esteban.
As you know, i have made the MFD. Some days i have good results at a place with some buried coins and other days nothing. I test it near a wire that supplies a refrigerator, and when it works, the MFD can detect the field of wire from 1.5 m far.
Yesterday, because the weather was rain, i spent all my day at Lab. I made a modification on the coil stimulator of my LRL (this that i had with me at Portugal), and also i replaced the 20 cm coil with another 10cm and now it detect the wire that supplies the refrigerator from 2.5m. It is great.... it is 60% more that the Andys Flind MFD.
So what is happening with the coil stimulator????? Does the stimulator signal modulate the input signal.... or the input signal "sit" on the stimulator signal, or..... what other.

Regards:)

[Esteban]

Hi Esteban.
As you know, i have made the MFD. Some days i have good results at a place with some buried coins and other days nothing. I test it near a wire that supplies a refrigerator, and when it works, the MFD can detect the field of wire from 1.5 m far.
Yesterday, because the weather was rain, i spent all my day at Lab. I made a modification on the coil stimulator of my LRL (this that i had with me at Portugal), and also i replaced the 20 cm coil with another 10cm and now it detect the wire that supplies the refrigerator from 2.5m. It is great.... it is 60% more that the Andys Flind MFD.
So what is happening with the coil stimulator????? Does the stimulator signal modulate the input signal.... or the input signal "sit" on the stimulator signal, or..... what other.

Regards:)

This is good notice, you obtain 60% more. With this device is very easy to found treasure at distance, 70-80 meters. Coil stimulator can be useful but sometimes not necessary. The stimulator put more sensitive the input, because is as a reference, introduces a small mV signal in input, so incoming signals can be more easy detectable.

Recently MFD found a big couple of oxidated nails used in rails at some meters... so thing also big oxidated iron box full of gold can be detectable.

Regards

[WM6]

Coil stimulator



What is this? Creme or massage oil?

[Geo]

This is good notice, you obtain 60% more. With this device is very easy to found treasure at distance, 70-80 meters. Coil stimulator can be useful but sometimes not necessary. The stimulator put more sensitive the input, because is as a reference, introduces a small mV signal in input, so incoming signals can be more easy detectable.

Recently MFD found a big couple of oxidated nails used in rails at some meters... so thing also big oxidated iron box full of gold can be detectable.

Regards

Hi Esteban.
I am not sure if you understood me about my LRL. The basic is a mod passive receiver + stimulator, but this time at higher frequency.
What do you think??? is it good to connect a second detector on it??

Regards

[Geo]

What is this? Creme or massage oil?


WHY?????
Please... If you don't know something, it is better to ask about it or to not answer,... but don't laugh with us:frown:.

Regards:frown:

[Esteban]

Hi Esteban.
I am not sure if you understood me about my LRL. The basic is a mod passive receiver + stimulator, but this time at higher frequency.
What do you think??? is it good to connect a second detector on it??

Regards

I don't connect another second detector. But also works with secondary detector.

[Geo]

I don't connect another second detector. But also works with secondary detector.


Thank you Esteban.
Next days if weather would not be good i"ll try to connect a second one.
Who knows???

Regards:)

[Geo]

Hi.
Today is a good day but how to try the LRL?? :angry::angry::angry:
Yesterday i replaced the 9V batteries with a pack of 4x1.2V rechargeable and o pcb with TL497A. All are OK but the LRL don't detect the electromagnetic field at Lab:(. Problem??? the oscillator of TL497!!!
Pulses of it overload the input so it is not able to detect anything. Today i will try with a shielding coil for TL497 and if no results i will replace it again with 9V batteries.

Regards:)

[WM6]

Pulses of it overload the input so it is not able to detect anything.

:)

Dont worry Geo, LRL is in perfect working condition, as all others LRLs.

[Geo]

Hi.
Today i went for test.
Sensitivity was very High. When i tried first at a place where there are buried some copper coins i took a very strong signal.
I turned the LRL to other direction and it beep again:frown:. After some experiments i saw that my pistol detected the horizons. I had the sensitivity just a clik before it beep. When i turned the pistol left, it beep at the line with south and north. When i turned it right it beep at the line with east and west. I reduced a little the sensitivity and stop to detect the horizons. As i walked it begun to beep again and again. It was a high voltage wire, at distance 15m, and 40cm height. It need for some livestocks to don't go out from farm. At other times before today, my pistol detected this wire from 3..5 m far. But near the coins i did not took any beep with this sensitivity. Maybe tomorrow to try to another place. I saw that the sensitivity is very very high, so i believe that i must detect the voltage near the buried objects.
Esteban, do you know any other way to reduce the detecting of horizons???

Regards:)

[Esteban]

Hi.
Today i went for test.
Sensitivity was very High. When i tried first at a place where there are buried some copper coins i took a very strong signal.
I turned the LRL to other direction and it beep again:frown:. After some experiments i saw that my pistol detected the horizons. I had the sensitivity just a clik before it beep. When i turned the pistol left, it beep at the line with south and north. When i turned it right it beep at the line with east and west. I reduced a little the sensitivity and stop to detect the horizons. As i walked it begun to beep again and again. It was a high voltage wire, at distance 15m, and 40cm height. It need for some livestocks to don't go out from farm. At other times before today, my pistol detected this wire from 3..5 m far. But near the coins i did not took any beep with this sensitivity. Maybe tomorrow to try to another place. I saw that the sensitivity is very very high, so i believe that i must detect the voltage near the buried objects.
Esteban, do you know any other way to reduce the detecting of horizons???

Regards:)

Horizons? All detectors are affected by magnetic field of Earth. When you have adjusted excluding it, well the difference is another cause, almost always metal buried many years. Of course, you can use a kind of dish connected to - , but you must found distance between dish and coil.

I modificate the old I have, but now with preamp. Look shielded cables in input, potentiometer and main PCB input. Also you can try shielding the core or the coil, deppend what you use. I use core and aluminum loop.

Regards :)

[Alexismex]

"but when they were upon the second one, the oscillator transistors got burned due to the intense fields"
What a big treasure !!! to kick *** the transistors, like e EMP from atomic bomb explosion !!!!
Make me laugh again, this thread is a delicatessen sensation for me and a positive enlightment for the technical forum....:)

[Geo]

"but when they were upon the second one, the oscillator transistors got burned due to the intense fields"
What a big treasure !!! to kick *** the transistors, like e EMP from atomic bomb explosion !!!!
Make me laugh again, this thread is a delicatessen sensation for me and a positive enlightment for the technical forum....:)


Hi Alexismex.
I don't have the knowlevel to understand and explain you what is happening. Simple.... i try, sometimes with results and other without results.
But i am good (not expert) with Lrods, i have found objects with them, I saw real LRL with perfect results... and of course i have friends who are rich from treasures who found with LRL. These are the reasons that tell me to continue experiment.

Regards:)

[Geo]

Horizons? All detectors are affected by magnetic field of Earth. When you have adjusted excluding it, well the difference is another cause, almost always metal buried many years. Of course, you can use a kind of dish connected to - , but you must found distance between dish and coil.

I modificate the old I have, but now with preamp. Look shielded cables in input, potentiometer and main PCB input. Also you can try shielding the core or the coil, deppend what you use. I use core and aluminum loop.

Regards :)


Thank you Esteban.
I must try another coil so to have the ability to shield it.
Now the coil has diameter about 10 cm. Who is your opinion??? to winding a biger coil or no.

:)Regards

[FrancoItaly]

Hi Geo
With my pistol, oscillator coil (a square of 25 cm) at 135 Khz, rx stage with more then 100M of impedance, no motion stage with push button retune, I sense a charged plastic rod at more then 2 m and a tree at 1 m and a stone wall at 80 cm, but I don't have a test target. The next week I will test my instrument near an old castle. My design is not similar to Morgan pistol, the sensor is a squared printed board of 5 cm, the amplification of rf stage is about 80 and after I rectify the signal.
Best Regards

[Esteban]

Thank you Esteban.
I must try another coil so to have the ability to shield it.
Now the coil has diameter about 10 cm. Who is your opinion??? to winding a biger coil or no.

:)Regards

I'm finish another MFD with 16 cm coil. I'll post here results of it. But with core and aluminium loop also at 23 hour (I test the last night) detect very well, better the couple of "green" coins in pile buried 15 years ago than stainless-steel gold platted clock buried 16 years.

[Esteban]

"but when they were upon the second one, the oscillator transistors got burned due to the intense fields"
What a big treasure !!! to kick *** the transistors, like e EMP from atomic bomb explosion !!!!
Make me laugh again, this thread is a delicatessen sensation for me and a positive enlightment for the technical forum....:)

Treasure knock (or destroy) fet input IC as CA3130 when his input is connected to antenna.

[aft_72005]

Hi Geo
With my pistol, oscillator coil (a square of 25 cm) at 135 Khz, rx stage with more then 100M of impedance, no motion stage with push button retune, I sense a charged plastic rod at more then 2 m and a tree at 1 m and a stone wall at 80 cm, but I don't have a test target. The next week I will test my instrument near an old castle. My design is not similar to Morgan pistol, the sensor is a squared printed board of 5 cm, the amplification of rf stage is about 80 and after I rectify the signal.
Best Regards


Hi Francoitaly :);)

Congratulate . :thumb:
I am interesting to your test result in real field .
Best regards.

[WM6]

Treasure knock (or destroy) fet input IC as CA3130 when his input is connected to antenna.



Esteban, this is not treasure that cause knocking. You are attacked by woodoo magia. May helped if you use your device without battery.

[detectoman]

geo: you lrl is so sensitive, these is good, but north and shout alteracion is normal, you should go always north-south how morgan say, if very sensitive modify the coil more less turns, put wire gross most stability, this all

[detectoman]

geo: not put big metal iron near the coil, for best , shield any sensitive transistor, regulate ok the voltage whit little set pot, put indicator of voltage of neddle, in current function, equal to little, the circuits whit preset resistences, but not destroy any lrl stable, only modify litle to little, and whit caution

[Geo]

Hi Geo
With my pistol, oscillator coil (a square of 25 cm) at 135 Khz, rx stage with more then 100M of impedance, no motion stage with push button retune, I sense a charged plastic rod at more then 2 m and a tree at 1 m and a stone wall at 80 cm, but I don't have a test target. The next week I will test my instrument near an old castle. My design is not similar to Morgan pistol, the sensor is a squared printed board of 5 cm, the amplification of rf stage is about 80 and after I rectify the signal.
Best Regards


Hi FrancoItaly.
My pistol works also at 135 Khz. My detector don't detects the trees and the stones but i have not yet good results with buried objects. The receiver coil is a round 10 cm. It has excellent sensitivity but .... nothing yet. Or maybe i detect at wrong place :angry:.
My receiver has more than 1000 gain until to rectifier.


Regards

[Geo]

I'm finish another MFD with 16 cm coil. I'll post here results of it. But with core and aluminium loop also at 23 hour (I test the last night) detect very well, better the couple of "green" coins in pile buried 15 years ago than stainless-steel gold platted clock buried 16 years.


Hi Esteban.
If it detect better the "green" coins then i like it. Do you sell it ????? :lol:
What is the small switch at the side of the box?? As i see it go at the common point of leds. These days i will winding a mono shielding coil for my detector so to see what is happening with the horizons....

Regards:)

[Geo]

geo: you lrl is so sensitive, these is good, but north and shout alteracion is normal, you should go always north-south how morgan say, if very sensitive modify the coil more less turns, put wire gross most stability, this all


Hi detectoman.
Yes i must go from north to south but if it detect all the 4 horizons then i can't move the pistol more than 60 degrees. It is not workable, and you can't always to go from north to south......
What are you meen when you say to put wire gross????
My detector is very stable, maybe with the coil shielding to solve the problem. I work far from electric lines so i think that it is not need to shield every sensitive unit.

Regards

[FrancoItaly]

Hi Geo
I don't have a receive coil, with this coil you sense mainly a change in magnetic field. I have only a small pcb that acts as voltage sensor. I have as reference the successive models of Mineoro that don't have a receive coil and not even a sort of Induction Balance coil.
Best Regards

[Esteban]

Hi Esteban.
If it detect better the "green" coins then i like it. Do you sell it ????? :lol:
What is the small switch at the side of the box?? As i see it go at the common point of leds. These days i will winding a mono shielding coil for my detector so to see what is happening with the horizons....

Regards:)

I "prepare" the green coins (verdigris). I describe it in another thread. Is better bury it in pile as Volta battery than sparzed... another discovery. :razz: The "column of ions" or "phenomenon" is detected near + - 1 m over the target.

Regards

[Geo]

Hi Geo
I don't have a receive coil, with this coil you sense mainly a change in magnetic field. I have only a small pcb that acts as voltage sensor. I have as reference the successive models of Mineoro that don't have a receive coil and not even a sort of Induction Balance coil.
Best Regards

Hi FrancoItaly.
Ohh.. you remembered me a previous model where i had only a coil for transmitter and the tuning was via a buton and a LF398. This detector was very sensitive to trees .. stones etc. No good... but i wish your LRL to be better.

Regards:)

[Geo]

I "prepare" the green coins (verdigris). I describe it in another thread. Is better bury it in pile as Volta battery than sparzed... another discovery. :razz: The "column of ions" or "phenomenon" is detected near + - 1 m over the target.

Regards

Hi Esteban.
At who thread did you wrote about the preparation of "green" coins???
Today i went to another place. Pistol gave me some beeps (but no continuant). If tomorrow afternoon is not raining i will go again with my metal detector so to check the place.

What about "small switch"??

Regards:)

[WM6]

:razz: The "column of ions" or "phenomenon" is detected near + - 1 m over the target.



Yes, but only if you know where the target is buried, otherwise it does not appear "column of ions" or "phenomenon".

[detectoman]

geo: for experence, in lrl, very thickness wire is most sensitive, but unstable, not thicknes is less sensitive but stable, coil big is stable, coil little less stable, oval coil discriminate major, square coil is good for put out noises, stable, coil glued is stable coil not glued very unstable to vibrations or warm, coil inside wood is good, whit paint white, coil inside black plastic unstable etc coper aleate hard good for tx coper soft good for rx etc, lrl is minuciosa science
lrl isnt for standar people without patiente, is for obsesive builders
lrl is science whit very much distincts metod, what is major? simple is major

[FrancoItaly]

Hi Geo
Your receive coil is induction balanced ? Or it's a single turn coil and then it's a sort of antenna ? In my instrument I can detect positive signals with green led and a beep and negative signals with a blue led and no beep. Trees and walls cause negative signals. Perhaps I have to realize a sort of discrimination or ground exclude but my test with a synchronous demodulator or a phase comparator it reveals no phase change between trees and my charged plastic rod. I think that it'is no a great disadvantage the sensibility to trees and walls if I am almost 1 meter away.

Best Regards

[Esteban]

Yes, but only if you know where the target is buried, otherwise it does not appear "column of ions" or "phenomenon".

You know where is the target at some meters, so, you can study "phenomenon".

[Esteban]

Hi Esteban.
At who thread did you wrote about the preparation of "green" coins???
Today i went to another place. Pistol gave me some beeps (but no continuant). If tomorrow afternoon is not raining i will go again with my metal detector so to check the place.

What about "small switch"??

Regards:)

You don't need to use hundreds bronze and nickel coins. Maybe 20 is OK, but better as Volta battery disposition. You can use transparent common tape for paper for to keep the form and it will not move when is bury. 20-25 cm depth is OK.

http://www.geotech1.com/forums/showthread.php?t=15408

[Esteban]

New design

[Geo]

You don't need to use hundreds bronze and nickel coins. Maybe 20 is OK, but better as Volta battery disposition. You can use transparent common tape for paper for to keep the form and it will not move when is bury. 20-25 cm depth is OK.

http://www.geotech1.com/forums/showthread.php?t=15408


Thank you Esteban.
With "Volta battery disposition" do you mean each coin on the other.... one bronze, one nicel ... etc???

Regards

[Geo]

New design

What LRL is this???? Is the MFD in new box??? Did you test it??

Regards

[Geo]

geo: for experence, in lrl, very thickness wire is most sensitive, but unstable, not thicknes is less sensitive but stable, coil big is stable, coil little less stable, oval coil discriminate major, square coil is good for put out noises, stable, coil glued is stable coil not glued very unstable to vibrations or warm, coil inside wood is good, whit paint white, coil inside black plastic unstable etc coper aleate hard good for tx coper soft good for rx etc, lrl is minuciosa science
lrl isnt for standar people without patiente, is for obsesive builders
lrl is science whit very much distincts metod, what is major? simple is major


Thanks...:)

[Geo]

Hi Geo
Your receive coil is induction balanced ? Or it's a single turn coil and then it's a sort of antenna ? In my instrument I can detect positive signals with green led and a beep and negative signals with a blue led and no beep. Trees and walls cause negative signals. Perhaps I have to realize a sort of discrimination or ground exclude but my test with a synchronous demodulator or a phase comparator it reveals no phase change between trees and my charged plastic rod. I think that it'is no a great disadvantage the sensibility to trees and walls if I am almost 1 meter away.

Best Regards

Hi FrancoItaly.
No my coil was a simple mono coil connected at the output of a oscillator. If i tune exactly at the center of frequency then i have "negative and positive" signals, or signal from up and down carrier side. I let it because it was very sensitive at people... trees ... stones... but NOT at buried objects :lol::lol::lol:

Regards:)

[Geo]

New design


Hi Esteban.
Why you have the coil in the center of box??? are you use coil stimulator???
Also why so long distance between coil and detector???
Is this coil a loop with transformer??
If yes what about the transformer? is it the same 1.8 ... 2 Ohm??

Regards:)

[FrancoItaly]

Hi Geo
Where is connected your RX stage if there isn't a receive coil ?

Best Regards

[Geo]

Hi FrancoItaly.
I spoke for post#39. Are you continue to mean for this of for the new.
If you mean the old one, no Rx stage !!!!

Regards:)

[Esteban]

Hi Esteban.
Why you have the coil in the center of box??? are you use coil stimulator???
Also why so long distance between coil and detector???
Is this coil a loop with transformer??
If yes what about the transformer? is it the same 1.8 ... 2 Ohm??

Regards:)

No stimulator. Distance is only 12 cm to the box. Is simple coil, no transformer.

Regards

[FrancoItaly]

Hi Geo
Excuses me, in my post #43 I referred to your instrument at 135 Khz with a receive coil, with a gain of 1000 it's necessary to balanced the receive coil, or the receive coil it is made vwith few turns.

Best Regards

[FrancoItaly]

Hi Esteban
Can you tell me if your lrls are also sensible to trees and stones ?
Best Regards

[FrancoItaly]

Hi All
In my instrument at 135 Khz I use in the receiver stage this circuit with very high impedance input. The 2 diodes replace resistors great then 100M that are difficult to find. Perhaps the 10M resistor is not necessary but I had this already soldered in the pcb...the OP can be used as amplifier not only buffer.

Best Regards

[Esteban]

Thank you Esteban.
With "Volta battery disposition" do you mean each coin on the other.... one bronze, one nicel ... etc???

Regards

Maybe can be good... I only use bronze small coins.

[Esteban]

Hi Esteban
Can you tell me if your lrls are also sensible to trees and stones ?
Best Regards

No, because don't use transmitter, is pure receiver.

[detectoman]

hello stevan my congratulations for these new lrl, i too understand what presence near of circuit and coil cause any indesable effect of funcionability, good stratege of you for most efficience, is beauty the design, seems how jirafe, what features have this cacharro stevan?

[Max]

he only use bronze coins...

maybe he's still in the bronze age there! :D

[Geo]

Hi Geo
Excuses me, in my post #43 I referred to your instrument at 135 Khz with a receive coil, with a gain of 1000 it's necessary to balanced the receive coil, or the receive coil it is made vwith few turns.

Best Regards

Hi FrancoItaly.
Sorry i made mistake.....about detectors.
But and this detector is a mono Rx coil and also i have another coil to stimulate the Rx coil. Today i changed coils... i made a square 15cm coil with shield. It seems more sensitive... these days when stop to rain i will go to test it..

Regards

[Geo]

New design


Hi Esteban.
Do you have the buzer inside box????


Regards:)

[Esteban]

Hi Esteban.
Do you have the buzer inside box????





Regards:)

Is outside:

[detectoman]

hey estaban, my questions, 1: have this new design build whit only rx the same capacibilites of one lrl ; tx-rx or 2 is whit less power, 3what is range?4 need you very hig power steps of amplification and bateries, and excess of complex complement for control, or is normal stable? what features, what advanteges, what discrimination? 5 is innecesary tx for one good lrl
is good deep capabilites? how many trasistors
in advance thanks

[Max]

Dr. Best beat that hands-down: already got half-a-mile over a coin! :lol:

You guys better change your mind and start build Dr. Best device... it's worth! :rolleyes:

[Geo]

Dr. Best beat that hands-down: already got half-a-mile over a coin! :lol:

You guys better change your mind and start build Dr. Best device... it's worth! :rolleyes:


Hi Max.

The Dr.Best device will give us much money:lol:. Sorry... i don't like so much money, so for me it is good the Estebans LRL :lol:

Regards:)

[batman1972]

Dear Geo
I 'm looking for a Good MFD.I saw u have a good one!
It is very good that u test it.
Can u send Schematic,PCB and part list for it pls?
Thnak u and Good Luck

[Geo]

Dear Geo
I 'm looking for a Good MFD.I saw u have a good one!
It is very good that u test it.
Can u send Schematic,PCB and part list for it pls?
Thnak u and Good Luck

Sorry, No:frown:
Maybe Esteban can help you

[Fred]

Maybe Esteban can help you

:lol: you´re so evil !

[Geo]

:lol: you´re so evil !

:cheers::cheers:
Helloooooooo Fred!!!!

[mehdi]

Hi esteban
Excuse me for harassment. i want you to help me and send me all detail of andy flinds' MFD and If you do it i'll be grateful. so please help me.
my e-mail:
mehdi1m2m@yahoo.com
thanks a lot
mehdi

[kostas87]

Horizons? All detectors are affected by magnetic field of Earth. When you have adjusted excluding it, well the difference is another cause, almost always metal buried many years. Of course, you can use a kind of dish connected to - , but you must found distance between dish and coil.

I modificate the old I have, but now with preamp. Look shielded cables in input, potentiometer and main PCB input. Also you can try shielding the core or the coil, deppend what you use. I use core and aluminum loop.

Regards :)

You can use a kind of dish connected to ( - )....

[Geo]

Kostas.... u answer after 12 years???:lol::lol:

[kostas87]

Kostas.... u answer after 12 years???:lol::lol:

Noooo, I'm just 12 years more mature..). something is going on..absorption...maybe the perfect lrl is a simple sensitive receiver that tracks a movement from an existing energy field in front of the receiver.

[Geo]

If the field is strong then a very simple detector is enough, otherway....:angry:

[Geo]

If i remember right... the fields at your area is very low.... :lol::lol: