lrl

[mesy64]

hi to all
This circuit was designed by Esteban

It is instead of ferrite used Tesla Coil?Normal coil
tanks

[WM6]

Hi mesy

If you need better directivity, then use ferrite coil.

Coil have to be tuned (L+C) to your local VLF transmitter frequency. If you tune coil to non-existend frequency in your local, you cannot detect nothing.
62 kHz maybe work in Paraguay but not everywhere else. Of course better to build with changeable antenna circiuts (L1+C1) or switch between different C as in AL718.

And it is a mistake in schematic: [preamp] is not only "preamp" but "OSC" (oscillator stage) too. Most important parts for proper functionality. As preamplifier is here used audio head preamplifier in cassete recorder.

Here proper housing for this LRL device: and here posible solution for such "preamp" (you chose between CP1 and CP2 to connect to you cass. recorder - according lower noise and other disturbances):

[mesy64]

tank you wm6
I want an amplifier and pre amplifier and a Tesla coil to detect metals such as coins, which are below the soil
It is possible that instead of ferrite in the circuit design of the coil Esteban easy to use?
Do you like Esteban Th Tesla coil, but I submit that the schematic that I can detect metals in the soil?(gold)
please help me
tank you

[WM6]

tank you wm6
I want an amplifier and pre amplifier and a Tesla coil to detect metals such as coins, which are below the soil
It is possible that instead of ferrite in the circuit design of the coil Esteban easy to use?
Do you like Esteban Th Tesla coil, but I submit that the schematic that I can detect metals in the soil?(gold)
please help me
tank you

Tesla coil is other story. It cannot work with here presented Esteban construction. It is not directive enough.

Why are you afraid of ferrite coil?

[Max]

hi to all
This circuit was designed by Esteban

It is instead of ferrite used Tesla Coil?Normal coil
tanks

yes... I remember it, but once again to detect WHAT ?

if receiver is running at 60Khz (LF) range you can get time signals from e.g. NIST

see here

http://en.wikipedia.org/wiki/WWVB

BUT you have to be at max 2000Km from Fort Collins, CO, USA otherwise you must rely on other transmitter...

but Esteban NEVER confirmed he's looking for time signals, though I asked him a number of times during testing of that PD gizmo

[J_Player]

yes... I remember it, but once again to detect WHAT ?

if receiver is running at 60Khz (LF) range you can get time signals from e.g. NIST

see here

http://en.wikipedia.org/wiki/WWVB

BUT you have to be at max 2000Km from Fort Collins, CO, USA otherwise you must rely on other transmitter...

but Esteban NEVER confirmed he's looking for time signals, though I asked him a number of times during testing of that PD gizmo

Hi Max,

This frequency might get a few feet penetration into the ground to be used like geologists use VLF for finding ground anomalies.
But you will find deeper penetration with lower frequencies like 10-30 KHz.

Best wishes,
J_P

[mesy64]

tank you wm6 and other freinds
I'm interested in building a project similar lrl Esteban
Or with Tesla coils or ferrite. No matter
dear wm6 You like to help me and a schematic design is practical, and Esteban with the ferrite to give?
I'm interested in such projects.
please help me

[J_Player]

tank you wm6 and other freinds
I'm interested in building a project similar lrl Esteban
Or with Tesla coils or ferrite. No matter
dear wm6 You like to help me and a schematic design is practical, and Esteban with the ferrite to give?
I'm interested in such projects.
please help me

Hi Mesy64,
None of the electronic engineers here have found a VLF circuit that is practical for finding small buried treasures at long distance.
The VLF circuits I see published here are practical only for making VLF surveys as a geologist does.
I have never seen convincing evidence that any of the VLF circuits published in this forum are recovering anything for a treasure hunter.
The exception is the PD which Morgan shows beeping 2 meters distance from a gold medal.
But I do not see the circuit for this PD posted here.
So I can not tell you any practical circuit for treasure hunting.

The VLF circuits I see here are good for spending many hours in the field and surveying large areas of ground to look for hot spots and cold spots.
This is how geologists use VLF receiver circuits.
The best circuits I have seen for locating treasure at long distance is when people make modifications to make these VLF machines more sensitive to smaller metal things.
But I do not see any detailed instructions how to make these modifications.
I see only some hints.

So I tell you there is no practical circuit that I have found in this forum for long range treasure hunting.
Only talk and theories and some VLF designs that are modified to work better for small objects without details that show how to make them work.

Best wishes,
J_P

[mesy64]

hi J_Player
I told you this was my calling.
I'm interested
Please help me make a plan similar to Esteban lrl

[wam]

Hi, base on this diagram I can advice to try dynamic microphone but stabilize the membrane so You will not have audio vibration on it (only EM field). The winding on the microphone will work as antenna. Take some plastic microphone so it will not shield the winding. You can connect to the winding some wires so it collect more signals. It will be more advance if audio equalizer is on the output so spectrum of the signals can be checked for the best frequency. You can glue some ferrite rode to membrane or winding and shield it with plates so it may have some directional performance. This device will go as low as 20 Hz if audio amp. will make it possible. Have good hunting.

[WM6]

Please help me make a plan similar to Esteban lrl

Hi mesy

probably you need this:

In other words:

"Show me Gold, I will show you locator!"

[J_Player]

hi J_Player
I told you this was my calling.
I'm interested
Please help me make a plan similar to Esteban lrl

I cannot help you make a plan similar to Esteban that will work. The reason is because Esteban did not show the schematic for his preamp. Everyone who attempted to build Esteban circuits I know of has found they do not work to find treasure. Part of the reason why they did not work to find treasure is because they did not have the complete circuit to build the Esteban locators. They built their version slightly different than the version Esteban built. They could not build it the exact same because Esteban did not show the complete circuit. So they had to guess what parts to use in places where Esteban did not tell the answers. They found that without the original circuit diagram, his circuits are not practical to produce a working locator.

In this case, we know how to build the beeps generator, and we can find an old tape head amplifier. The missing information is the preamp. The missing information of the preamp is known only by Esteban, and he does not make posts here to tell how to connect the preamp, or what parts to use. According to what Esteban has previously posted, many of his preamps require special discrete components such as germanium transistors or diodes or FETs which are connected in a manner that is not usually used in circuits today. Since we don't have an idea of what special parts or circuit connections are made in this preamp, and we don't know what special tuning it requires, it is not possible to make a practical design that we can expect to work.

The remaining option is to guess. This means there are thousands of possible guesses which leave a very unpractical problem to solve. This is something you can spend your own time to solve if you have time for it. You can find hundreds of preamp designs if you click on google for "preamp design". You will be able to find preamp designs from hobbyists, musicians, stereo builders, and even manufacturers of transistors who give complete schematics. But you will not find the missing circuit information that Esteban did not show in his diagram.

Best wishes,
J_P

[Fred]

J-P, i was reading your posts, and wanted to ask you : Would you be, by any chance, a teacher, or an anarchist ?

[Max]

I cannot help you make a plan similar to Esteban that will work. The reason is because Esteban did not show the schematic for his preamp. Everyone who attempted to build Esteban circuits I know of has found they do not work to find treasure. Part of the reason why they did not work to find treasure is because they did not have the complete circuit to build the Esteban locators. They built their version slightly different than the version Esteban built. They could not build it the exact same because Esteban did not show the complete circuit. So they had to guess what parts to use in places where Esteban did not tell the answers. They found that without the original circuit diagram, his circuits are not practical to produce a working locator.

In this case, we know how to build the beeps generator, and we can find an old tape head amplifier. The missing information is the preamp. The missing information of the preamp is known only by Esteban, and he does not make posts here to tell how to connect the preamp, or what parts to use. According to what Esteban has previously posted, many of his preamps require special discrete components such as germanium transistors or diodes or FETs which are connected in a manner that is not usually used in circuits today. Since we don't have an idea of what special parts or circuit connections are made in this preamp, and we don't know what special tuning it requires, it is not possible to make a practical design that we can expect to work.

The remaining option is to guess. This means there are thousands of possible guesses which leave a very unpractical problem to solve. This is something you can spend your own time to solve if you have time for it. You can find hundreds of preamp designs if you click on google for "preamp design". You will be able to find preamp designs from hobbyists, musicians, stereo builders, and even manufacturers of transistors who give complete schematics. But you will not find the missing circuit information that Esteban did not show in his diagram.

Best wishes,
J_P

Hi,
yes... it's as you described, I asked Esteban many times about his LRL things... and never got a complete schematic to test nor accurate description of e.g. signal and receiver even theoretical and not plain schematics but the usual, almost always boring, vague description or some old picture of scientific amateur books... or moder mechanics stuff etc.

the unsaid about Esteban's LRLs and thus Alonso's one too is that they always thought that a critical tuned receiver design is the lead to LRL to work...

you can see that reading between the lines of such posts , where e.g. Esteban show pictures of an old quartz crystal nobody use today, or when talk about ferrite critically tuned MDs etc.

In the case of tape head amplifier I remember he's strategy was to build an antenna (something VHF stile, using aluminium) then put a ferrite toroidal core with coil in the antenna frame and then connecting the whole thing to the tape head amplifier and beep generator.

The basic idea of this approach is having a HUGE electrical separation (thus impedance) between the sensing coil and the antenna... and the reason is obvious to me: his antenna stuff is critically tuned ! so any change in impedance or load will disturb the critical tuning... read reasonance of the LC component in the antenna circuit

BUT BUT BUT

the question is: what the hell he's trying to detect in the VHF range from a buried target ??? and what's frequency he's looking for ???

never told us... but I guess it's a beacon in VHF , probably just up the end of broadcast band for FM (>110MHz) and looking for an AM signal, an e.g. VOR, NavAid and ILS for airplanes (http://en.wikipedia.org/wiki/VHF_omnidirectional_range)

BUT BUT BUT

we know that VHF is not suitable (usually) to detect underground stuff (unless we talk of e.g. low-res GPR)... so seems pure non-sense from him...

I strongly think that these guys are very passionate RF amateurs and built thousands of coils , receivers etc... using transistors and tubes maybe from the 60s! but this cannot explain their claims

the VHF reflection IS possibile but not by stuff underground so I think they are self-decepted or have illusions that the target acts OVER the soil, by their ion clouds or something to show and make RF reflection appears just over where the item is buried....

this could maybe explain why all their electronic LRLs have RF receivers inside that goes from LF to VHF and maybe even higher frequencies



regards
Max

[Max]

J-P, i was reading your posts, and wanted to ask you : Would you be, by any chance, a teacher, or an anarchist ?

he's just a provocateur