THE FERRITE TREASURE SENSOR

[Esteban]

Absorption type. In the way.

[Esteban]

Finish and works great! Treasure can't scape of it! Is easy to mount in a plate (in this case, fiber glass), all are at hand. Radio is not use here, just amplificative stages.

Regards

Esteban

[Geo]

Congratulation
You have very nice garden :lol:
Regards:)

.....Good Luck with your new pistol

[putrechigi]

:)congratulations find sicret flowers?:):lol::):lol::):lol::):lol:
little joke:):)

[putrechigi]

photo seems very seplice be built over the years you have successfully reduce everything to the minimum;);):thumb::thumb: or e 'a new project:cheers::cheers:

[michael]

Hi Esteban. nice and congratulations, but how are you sure "Treasure can't scape of it"?
do you have any case report? what have experienced with that?found objects, weather conditions,......

[Fred]

Hi
I recognise the construction modus operandi...lots of small PCB´s ,long-wired together...:lol:
Esteban, if you just need a very hight amplification factor, why you don´t use just an opamp, instead of all that stuff ??
regards,
Fred.

[Esteban]

Hi
I recognise the construction modus operandi...lots of small PCB´s ,long-wired together...:lol:
Esteban, if you just need a very hight amplification factor, why you don´t use just an opamp, instead of all that stuff ??
regards,
Fred.

I remember I explain that is ease this mode because no need to replace all PCB... So, in this mode I can make and select the good parts. When I found the better, I put in an only PCB. ;) Here parts are: power supply, tune ferrite, pre, amp, audio. Yes, I have prepared a op-amp dual ferrite detector.

[Esteban]

Hi Esteban. nice and congratulations, but how are you sure "Treasure can't scape of it"?
do you have any case report? what have experienced with that?found objects, weather conditions,......

Because I detect very well some silver objects I have buried since 10 years and bronze stuff (round form, 25 cm diam.), so treasure can't scape, except is in iron box...

[Morgan]

Because I detect very well some silver objects I have buried since 10 years and bronze stuff (round form, 25 cm diam.), so treasure can't scape, except is in iron box...
I´m not so sure that the iron box limits the LRL of finding the treasure...:rolleyes:

[Geo]

Hi Esteban.
The tube is plastic or metalic????
Also the shield has any gap ??

[hung]

I´m not so sure that the iron box limits the LRL of finding the treasure...:rolleyes:

Yes it does for his present device and also regarding Mineoro detectors aproach when looking for a particular metal (gold or silver) contained in iron boxes. Ferrite captures the electric emissions of the long time buried metal but when inside a metal box, this acts as a shield for the elec. field.

There's a way to overcome this and I'm sure Esteban will eventually know about it or probably he already does.

[nelson]

Felicitaciones Esteban y espero me comentes tus experiencias futuras.
EStoy a la espera de lo ofrecido por email personal ( ce3llp@mi.cl)
Atte.
Nelson

Absorption type. In the way.

[Esteban]

Hi Esteban.
The tube is plastic or metalic????
Also the shield has any gap ??

Tube is used in fishing, fiber glass type. No gap, except extremes of ferrite free.

[Esteban]

Felicitaciones Esteban y espero me comentes tus experiencias futuras.
EStoy a la espera de lo ofrecido por email personal ( ce3llp@mi.cl)
Atte.
Nelson

No me olvido, solo que quiero también terminar cosas que empecé.

Saludos

Esteban

[Esteban]

photo seems very seplice be built over the years you have successfully reduce everything to the minimum;);):thumb::thumb: or e 'a new project:cheers::cheers:
Hi, new project.

Regards

Esteban

[maimoune]

.....Good Luck new project.
congratulations

[Esteban]

Ferrite:

[Esteban]

.....Good Luck new project.
congratulations

Thanks very much!

[Esteban]

Two ferrites glued between them.

[Esteban]

"Bridges" I cut of old equipment... gold coated. I have many useful "trash". :lol:

[humhum]

:rolleyes: Hi Esteban, your ferite sensor which frequency accepts ?
(may be received 59,5khz - 60Khz )

[J_Player]

Ferrite captures the electric emissions of the long time buried metal but when inside a metal box, this acts as a shield for the elec. field.

There's a way to overcome this and I'm sure Esteban will eventually know about it or probably he already does.Electric emissions from long time buried metal are a result of ions formed in damp soil when combining with other compounds in the soil that can dissolve trace amounts of the metal. If gold is contained inside of an iron box, or a plastic box, or any other box that prevents the gold from coming into contact with the damp soil and the chemicals that can dissolve trace amounts of gold, then there will be no electric emissions, as there are no gold ions in the soil.

I would think the best way to overcome this is to bury the gold without any iron box to prevent it from contacting the soil and creating trace amounts of gold ions.*

*(This solution will work ONLY if the trace amounts of gold ions that dissolve into the damp soil become concentrated enough to create an anomaly in the soil that can be detected with an instrument that is capable of detecting secondary effects associated with the presence of these ions).

Best wishes,
J_P

[Alexismex]

Hello Forum ,
For mi the " halo effect" exist , for sure because many time i find coins in the soil remove it and pass over the coil (VLF) you have sometimes the Halo effect a small signal result and in 10 o 30 second this shallow vanish...
But I do not know if it is electro chemical o electro magnetic o other effect ???
Alexis

[J_Player]

many time i find coins in the soil remove it and pass over the coil (VLF) you have sometimes the Halo effect a small signal result and in 10 o 30 second this shallow vanish...
But I do not know if it is electro chemical o electro magnetic o other effect ???
AlexisA VLF detector is only capable of detecting things that will change the magnetic effects of the search coil. It does not detect any chemicals unless they can generate eddy currents that allow changes to the magnetic effects. The chemicals that are known to allow eddy currents to form are the metals that conduct electricity, such as copper, nickel, iron, aluminum, gold, silver, etc., and mixtures of these metals.

It is theoretically possible that when searching in non-conductive soil that has an area where there is an anomaly of very conductive soil, a VLF detector may be able to detect the conductivity change in this area of soil. This means the conductivity of the "conductive area of the soil" must be similar to the conductivity of a metal object. But I have not seen any testing results that demonstrated there are areas of "more-conductive soil" that were detectable with a VLF detector. The only exception is soil that has "hot rocks" or pockets of conductive sands in it, or in very iron-rich soil similar to the soil found in the Australian gold fields. These areas that have pockets of "more conductive soil" do not produce treasures, but only areas of conductive rocks and sands.

Best wishes,
J_P

[Morgan]

Electric emissions from long time buried metal are a result of ions formed in damp soil when combining with other compounds in the soil that can dissolve trace amounts of the metal. If gold is contained inside of an iron box, or a plastic box, or any other box that prevents the gold from coming into contact with the damp soil and the chemicals that can dissolve trace amounts of gold, then there will be no electric emissions, as there are no gold ions in the soil.

I would think the best way to overcome this is to bury the gold without any iron box to prevent it from contacting the soil and creating trace amounts of gold ions.*

*(This solution will work ONLY if the trace amounts of gold ions that dissolve into the damp soil become concentrated enough to create an anomaly in the soil that can be detected with an instrument that is capable of detecting secondary effects associated with the presence of these ions).

Best wishes,
J_P
Hello J_P

It seames you know a lot of secrets about metal in the ground...
My theory is :

1-THE GOLD AND SILVER ACUMULATE MUCH MORE ENERGY THAN OTHER METALS,when buried underground for many years.

2- THERE ARE MUCH MORE ELECTRIC EMISSIONS FROM THE BURIED NOBLE METALS THAN OTHER METALS.

3-The Pistoldetector is sensitive to changes of variations in ground electric field,so it can detect the ELECTRIC EMISSIONS coming from buried metals,becouse the PASSIVE RECEIVER WAS MADE TO CATCH THIS PHENOMENON.And this phenomenon you mention above,and for sure its cientificly proved...Your next step is start believe in some LRL devices;)

[Morgan]

A VLF detector is only capable of detecting things that will change the magnetic effects of the search coil. It does not detect any chemicals unless they can generate eddy currents that allow changes to the magnetic effects. The chemicals that are known to allow eddy currents to form are the metals that conduct electricity, such as copper, nickel, iron, aluminum, gold, silver, etc., and mixtures of these metals.

It is theoretically possible that when searching in non-conductive soil that has an area where there is an anomaly of very conductive soil, a VLF detector may be able to detect the conductivity change in this area of soil. This means the conductivity of the "conductive area of the soil" must be similar to the conductivity of a metal object. But I have not seen any testing results that demonstrated there are areas of "more-conductive soil" that were detectable with a VLF detector. The only exception is soil that has "hot rocks" or pockets of conductive sands in it, or in very iron-rich soil similar to the soil found in the Australian gold fields. These areas that have pockets of "more conductive soil" do not produce treasures, but only areas of conductive rocks and sands.

Best wishes,
J_P
You know why the pistoldetector catch this ELECTRIC EMISSIONS FROM BURIED METALS ? Becouse as the PASSIVE RECEIVER,circuit very sensitive to electric and electromagnetic fields.
And my theory is that the GOLD as much stronger electric emissions than other metals. The Gold acumulate much more energy ,but other metals acumulate and irradiate less energy.

[Esteban]

You know why the pistoldetector catch this ELECTRIC EMISSIONS FROM BURIED METALS ? Becouse as the PASSIVE RECEIVER,circuit very sensitive to electric and electromagnetic fields.
And my theory is that the GOLD as much stronger electric emissions than other metals. The Gold acumulate much more energy ,but other metals acumulate and irradiate less energy.

I have my doubts... As gold corrode (no corrode, except "low gold") less than other metals as bronze or copper, is more difficult to be detectable at distance, except if you can build device with high selectivity. Except treasure size or cache, small gold items are reluctance... Bronze and copper and even silver coins not pure (mixed with copper) are more "ease". With absorptive method found a silver 1797 Spanish coin (some "black" for the time), but just five times can be detected and fix the site. No more than 4 meters and depth 20 cm.

Regards

Esteban

[Clondike Clad]

Finish and works great! Treasure can't scape of it! Is easy to mount in a plate (in this case, fiber glass), all are at hand. Radio is not use here, just amplificative stages.

Regards

Esteban
How can you tell gold from silver with this?
Can you pick up rings and how far?

[Esteban]

How can you tell gold from silver with this?
Can you pick up rings and how far?

No at high distance, just 5 meters. Better for big items as treasure.

Now I replace magnetic speaker by piezo, this not disturb as speaker based on coil and magnet. Also consumption is lowest.

Now, I'll replace the audio amp of radio by circuit based on NE5534 or similar. This is just for to try ferrite.

Regards

Esteban

[maimoune]

hi Esteban
Very intersted
good luck

[Geo]

No at high distance, just 5 meters. Better for big items as treasure.

Now I replace magnetic speaker by piezo, this not disturb as speaker based on coil and magnet. Also consumption is lowest.

Now, I'll replace the audio amp of radio by circuit based on NE5534 or similar. This is just for to try ferrite.

Regards

Esteban

So, you will connect the ferrite directly to the 5534 ?????
Or you will use the first preamlifier with transistors??
Regards

[Clondike Clad]

No at high distance, just 5 meters. Better for big items as treasure.

Now I replace magnetic speaker by piezo, this not disturb as speaker based on coil and magnet. Also consumption is lowest.

Now, I'll replace the audio amp of radio by circuit based on NE5534 or similar. This is just for to try ferrite.

Regards

Esteban
If I got this you can pick up ring a 5 meters.
If this is so it can pick up Carl's 10oz gold bar.
THAT IS $25,000 YOU CAN GET.

[gef12]

Finish and works great! Treasure can't scape of it! Is easy to mount in a plate (in this case, fiber glass), all are at hand. Radio is not use here, just amplificative stages.

Regards

Esteban

Hey Esteban what country do you live in .. let me think it is the tropical region somewhere

[Esteban]

So, you will connect the ferrite directly to the 5534 ?????
Or you will use the first preamlifier with transistors??
Regards

I prefer 2 transistor pre connected to NE5534 or similar IC.

Regards

Esteban

[Esteban]

If I got this you can pick up ring a 5 meters.
If this is so it can pick up Carl's 10oz gold bar.
THAT IS $25,000 YOU CAN GET.

Thanks very much!

[Esteban]

Hey Esteban what country do you live in .. let me think it is the tropical region somewhere

Since 3 days we have 44-45 ºC at sun, in the street, here in Paraguay, South America. :shocked:

[Geo]

I prefer 2 transistor pre connected to NE5534 or similar IC.

Regards

Esteban

Good. For me is better to use a preampl all with transistors and in dc coupling. It has better slew rate !!! A good pre is the audio prelude from Elektor

Regards

[maimoune]

hello Esteban...

good job:)
I see your near to build an perfecte LRL
I would be the first to buy your devices:):):)

[nelson]

Gracias hermano, estamos en conracto.
Atte.
Nelson

No me olvido, solo que quiero también terminar cosas que empecé.

Saludos

Esteban

[Esteban]

Good. For me is better to use a preampl all with transistors and in dc coupling. It has better slew rate !!! A good pre is the audio prelude from Elektor

Regards

The prelude is the sintetizer or what? I remember it...

Regards

Esteban

[aft_72005]

The prelude is the sintetizer or what? I remember it...

Regards

Esteban

Hi Esteban :)
Not synthesizer, prelude ,name of amplifier article ,published
By elector magazine .also at far past.
Best regards.

[Esteban]

Hi Esteban :)
Not synthesizer, prelude ,name of amplifier article ,published
By elector magazine .also at far past.
Best regards.

Thanks very much! :)

Best regards

Esteban

[Esteban]

This is the Prelude, +15/0/-15V :shocked:

[Max]

This is the Prelude, +15/0/-15V :shocked:

Hi Esteban,
I read some older posts in this thread and seems you made a double ferrite antenna with a coil over one half, shield and cable... spacing 5mm.

OK, let me think you are talking about some VLF receiver , say some tens kilohertz, and remember me something already seen somewhere.

But what I do not understand is wich kind of signal you're looking for: 3 questions cover the topic I think at 100%.

Does the buried gold emits RF waves ?
Or the buried gold absorb some outside generated RF waves ?
Or the buried gold enhance/focalize some outside generated RF waves ?

If your device works, one of the above questions you must answer with "yes".

Otherwise I see no way that the device could work by means of being a pure RF / VLF receiver, no matter of "how" that action is performed.

Kind regards,
Max

[hung]

Does the buried gold emits RF waves ?
Or the buried gold absorb some outside generated RF waves ?
Or the buried gold enhance/focalize some outside generated RF waves ?

Max

I'm almost positive anybody in the remote sensing forum following this subject for years knows the answers for these simple questions.
Why not you?

'The truth is not out there'... It was always in here...
Sorry I couldn't resist.:lol:

[Fred]

Carefull Esteban, daddy is watching ...

[J_Player]

I'm almost positive anybody in the remote sensing forum following this subject for years knows the answers for these simple questions.
Why not you?Hmmmm...
I have been reading the remote sensing forum for years, and I don't know for certain how Esteban believes this ferrite machine works either. Specifically, I don't know what kind of signal Esteban believes his ferrite amplifier is responding to.

You have demonstrated yourself to be very knowledgeable about these things after explaining that an iron box shields emissions from long time buried gold. Since you're almost positive anybody in the remote sensing forum following this subject for years knows the answers for these simple questions, can you tell us exactly what Esteban's ferrite is responding to when near long time buried gold?

Best wishes,
J_P

[aft_72005]

This is the Prelude, +15/0/-15V :shocked:


Hi Esteban :)
Yes, it is prelude amplifier .if I think true, also it was
With preamplifier. This is ,only amplifier.
Also in hi fi world, prelude had very good specification.:D
Best regards.

[Qiaozhi]

Hi Esteban,
I read some older posts in this thread and seems you made a double ferrite antenna with a coil over one half, shield and cable... spacing 5mm.

OK, let me think you are talking about some VLF receiver , say some tens kilohertz, and remember me something already seen somewhere.

But what I do not understand is wich kind of signal you're looking for: 3 questions cover the topic I think at 100%.

Does the buried gold emits RF waves ?
Or the buried gold absorb some outside generated RF waves ?
Or the buried gold enhance/focalize some outside generated RF waves ?

If your device works, one of the above questions you must answer with "yes".

Otherwise I see no way that the device could work by means of being a pure RF / VLF receiver, no matter of "how" that action is performed.

Kind regards,
Max

I'm almost positive anybody in the remote sensing forum following this subject for years knows the answers for these simple questions.
Why not you?

'The truth is not out there'... It was always in here...
Sorry I couldn't resist.:lol:

The hidden message in Hung's words is (since the answer is as obvious as the nose on your face) that you must be incredibly dumb to ask such a question. :lol:

Of course, "we" all know the real answer... :razz:

[Clondike Clad]

The hidden message in Hung's words is (since the answer is as obvious as the nose on your face) that you must be incredibly dumb to ask such a question. :lol:

Of course, "we" all know the real answer... :razz:
RF from gold iiiiiiiiiii if it is part of a tranmitter.... JUST LOOK AT THE PICK UP OF MOST LRL...PLUS LOOK AT THE INPUT SIGNAL TRANSISTOR....OK I AM GOING TO LET THE BIG AZZ CAT OUT OF THE BAG...MOST OF THE TRANSISTORS HAVE N..O..I..S..E AND LOTS OF IT.
SO WHY ARE VERY LOW NOISE TRANSISTORS NOT BEING USED ON MOST OF THE LRLS.:nono:

[Esteban]

Hi Esteban,
I read some older posts in this thread and seems you made a double ferrite antenna with a coil over one half, shield and cable... spacing 5mm.

OK, let me think you are talking about some VLF receiver , say some tens kilohertz, and remember me something already seen somewhere.

But what I do not understand is wich kind of signal you're looking for: 3 questions cover the topic I think at 100%.

Does the buried gold emits RF waves ?
Or the buried gold absorb some outside generated RF waves ?
Or the buried gold enhance/focalize some outside generated RF waves ?

If your device works, one of the above questions you must answer with "yes".

Otherwise I see no way that the device could work by means of being a pure RF / VLF receiver, no matter of "how" that action is performed.

Kind regards,
Max

RF detects, magnetic system detects, microvoltmeter detects, IR-RF detects... I think conductive metals buried for long time is a kind of interference... electric, RF (maybe re-radiated), magnetic... phenomenon is very complex.

Any kind of device works, the theme is found the best... Not limit in experimentation with it. ;)

Regards

Esteban

[Esteban]

I think this previous works, one transitor is amplifier and other is balance. Necessary reductor resistor maybe needs because rapid movement catchs spurious induction???

Also can be used for adjust MD coils, I think!

[Great_Alex]

maybe Steban doesn't know how his device work .
i don't find a reason that Steban lie and pretend to us that his device realy work . if you want to build a real device you should realize the theory of how it works , then try to change and improve it .

rapid movement catchs spurious induction???



Esteban , is it neccessary to sweep your device to find a target , when you point staright to a target in a fix position , your device has a permanent signal , or not in a moment it has a signal and the the signal disapear ?
please describe more about how you operate it and how is your device response ?

if it detect RF wave , why rapid movement make strong iduction voltage ?

[Morgan]

maybe Steban doesn't know how his device work .
i don't find a reason that Steban lie and pretend to us that his device realy work . if you want to build a real device you should realize the theory of how it works , then try to change and improve it .



Esteban , is it neccessary to sweep your device to find a target , when you point staright to a target in a fix position , your device has a permanent signal , or not in a moment it has a signal and the the signal disapear ?
please describe more about how you operate it and how is your device response ?

if it detect RF wave , why rapid movement make strong iduction voltage ?
I´m sure Esteban dont know all about the phenomenon but he try to know as much as its possible,and me the same but unfortunatly i´m not electronic Engeneer...
Me and some other members in this forum say thanks to Esteban for all the information he give to us.
I think sooner or later,the LRL devices jump to the perfection.

[Esteban]

I´m sure Esteban dont know all about the phenomenon but he try to know as much as its possible,and me the same but unfortunatly i´m not electronic Engeneer...
Me and some other members in this forum say thanks to Esteban for all the information he give to us.
I think sooner or later,the LRL devices jump to the perfection.

Nobody knows all phenomenon involved, but is detectable, but how can be measurable?

I refer that spurious signal can be produced by rapid movement and maybe causes for electricity on air. But this can be controlled reduced via resistor.

Regards

Esteban

[Esteban]

maybe Steban doesn't know how his device work .
i don't find a reason that Steban lie and pretend to us that his device realy work . if you want to build a real device you should realize the theory of how it works , then try to change and improve it .



Esteban , is it neccessary to sweep your device to find a target , when you point staright to a target in a fix position , your device has a permanent signal , or not in a moment it has a signal and the the signal disapear ?
please describe more about how you operate it and how is your device response ?

if it detect RF wave , why rapid movement make strong iduction voltage ?

Maybe I can't explain and translate in a formula, etc., just wish to found better system!

The gold is detectable at some meters, old gold, not new. This detection is good when the pistol is in horizontal position, but bad or null when pistol is in angle, I presume as pistol is more in plane of Earth, this mask the phenomenon... very complex!

But with antenna / open base transistor the phenomenon can be detected in any position (angle), of course better in horizontal position. This is part of the phenomenon I know.

Sometimes detection is permanent, and maybe deppend of type of detector or/and input used.

[Qiaozhi]

Maybe I can't explain and translate in a formula, etc., just wish to found better system!

The gold is detectable at some meters, old gold, not new. This detection is good when the pistol is in horizontal position, but bad or null when pistol is in angle, I presume as pistol is more in plane of Earth, this mask the phenomenon... very complex!

But with antenna / open base transistor the phenomenon can be detected in any position (angle), of course better in horizontal position. This is part of the phenomenon I know.

Sometimes detection is permanent, and maybe deppend of type of detector or/and input used.
If the PD needs to be held in a horizontal position, then why does it not detect a target that is behind the operator? How do you know whether the signal is coming from the front or behind?
Also, in your avatar, you are pointing your PD at an angle..

[Esteban]

If the PD needs to be held in a horizontal position, then why does it not detect a target that is behind the operator? How do you know whether the signal is coming from the front or behind?
Also, in your avatar, you are pointing your PD at an angle..

This occurs in house. There is a site in garden in wich a child loose a small broken gold ring 10-12 years ago, and maybe the open ring causes it. In my avatar is in angle because was detected a closed ring, very old. If you cut a small ring maybe also is hardzarous detectable with common MD, maybe this explain, hope in open field and with old targets can be different, but any project can be different... Oscillator with coil as pistol don't suffer this problem, also loop low impedance you see in other projects can be used in angle.

At this time don't detect behind operator, but yes in sides, right or left. I can know the position of target because when you pass over it, tend to increases the beeps.



Regards

Esteban

[Great_Alex]

how is the response of your detector to Cell Phone EM or when thunder happens or when you turn the room light off and on , did you test this ?

it is more strange to me that why it does not detect the object from behind ? does the ferrite antenna make these one way detection ?

[Morgan]

how is the response of your detector to Cell Phone EM or when thunder happens or when you turn the room light off and on , did you test this ?

it is more strange to me that why it does not detect the object from behind ? does the ferrite antenna make these one way detection ?
I made the test with my pistoldetektor ,when i turn on and off the room light,i get signal in Passive Receiver,more than 10 meters distance from 220V ,60 W light.:shocked:

[Esteban]

how is the response of your detector to Cell Phone EM or when thunder happens or when you turn the room light off and on , did you test this ?

it is more strange to me that why it does not detect the object from behind ? does the ferrite antenna make these one way detection ?

Appears not detect behind this small items, sure with big items.

Yes, sure strong sources as thunder will produces falses...

[Geo]

This occurs in house. There is a site in garden in wich a child loose a small broken gold ring 10-12 years ago, and maybe the open ring causes it. In my avatar is in angle because was detected a closed ring, very old. If you cut a small ring maybe also is hardzarous detectable with common MD, maybe this explain, hope in open field and with old targets can be different, but any project can be different... Oscillator with coil as pistol don't suffer this problem, also loop low impedance you see in other projects can be used in angle.

At this time don't detect behind operator, but yes in sides, right or left. I can know the position of target because when you pass over it, tend to increases the beeps.



Regards

Esteban


How old was the child ???
25...30 years old... sorry but i rememberd something
Regards:)

[Esteban]

Part of problem of detection in angle was solved.

Original ferrite position present small surface regarding target. 90º was girated and now present more surface and angle is not a problem.

[humhum]

schematic

[Morgan]

schematic
Antenna ???
Its for gold locator ?:|

[humhum]

No for gold ,Morgan this is only passive receiver side for absorbable LF 50Khz -80Khz.

[detectoman]

this antique circuit of brother humhum sems cool' morgan
but the thunting enginers not think in simple circuits, but complicate jaja
is one extrange mode of mind
i only love' lrls., are superior to complicate gpr jja

i need build one simple and manual radar, i kilo maxime wheigt, go make this hha

[Morgan]

this antique circuit of brother humhum sems cool' morgan
but the thunting enginers not think in simple circuits, but complicate jaja
is one extrange mode of mind
i only love' lrls., are superior to complicate gpr jja

i need build one simple and manual radar, i kilo maxime wheigt, go make this hha
Hola Dman

Pero como lo vais a construir se Humhum hay hablado que no está completo ??? Y no es para ORO...

Abrazos

[alexis]

Hi Steven, I have the walkman but as I do the preamp and where I get this ferrite, thanks.

[jalfal]

Thanks a lot.:)

[enjoykin4]

http://realstrannik.ru/media/kunena/attachments/2801/pic1.JPG
http://realstrannik.ru/media/kunena/attachments/2801/pic2.0.JPG

Частота (Frequency) для:

алюминия (aluminium) (A1) равна 3245 кГц , = 3.245MHz
для меди (copper) (А2) 3872 кГц , = 3.872 MHz
для железа (A3) (iron) 4731 кГц , = 4.731 MHz
для серебра (silver) (А4) 5278 кГц , = 5.278 MHz
для золота (gold) (А5) 5621 кГц , = 5.621 MHz
для платины (platinum) (A6) 5722 кГц , = 5.722 MHz

К174ХА3, аналог NE545B

Source
http://www.realstrannik.ru/forum/29-tpu/267-tpu-otto-roberto.html?start=1080

[abdou2014]

Is there anybody who knows how to make the double O coil 50 + 50 of esteban Pls ???

[WM6]

Why you insist to post your question "here and there", and not where did you read about such OO Esteban coil?

If you need to play puzzles, then solve it by yourself.

[abdou2014]

Sorry i shouldn't have done this .

[WM6]

Sorry i shouldn't have done this .

No problem, I shouldn't to explain you how to build Esteban double O coil, as well.

[abdou2014]

Why Mr, it is only a coil !