If LRL works, then ONLY this way !!!

[Funfinder]

By from far away transmitters and their EM-fields created eddy-currents !!!

a localized electric current induced in a conductor by a varying magnetic field.
"When a coil of wire surrounds a ferromagnetic core, like iron, for example, of a transformer, the changing magnetic field induces an eddy current in the core, which happens to be conductive as well."

This is just a very short explanation.

Also non-ferromagnetic objects are causing eddy-currents and btw.
this is how induction balance works:

Both coils of a detector are like a transformer and the buried object acts as core.
Even mineralized soil acts like this and causes a different energy flow compared to
if there would be nothing near the coil at all (like a transformer completly without a core).


Now we have more or less powerful EM-field sources, transformer cores
(metal stuff) here and there and the LRL detector that is critical in resonance
or better said: extremly stable on the same frequency of one of those far away
EM-field sources.

What I'm doing here is trying to explain why LRL detection might
work - but on a scientific level!

Seen on a larger scale the long wave etc. radio station is the
metal detectors coil #1 and the passive receiver is coil #2.

Now, if someone walks straight into one direction,
of course always holding the coil exactly at its same place
incl. same distance from ground,
because otherwise the field strenght changes and can cause wrong signals,
the induction level of far away transmitter and almost at
the same position (seen from a real big level) staying antenna
will remain the same.

Will remain the same until some "transformer-core" = find
crosses its way or comes closer!

In this case the object distorts the "direct" energy flow from
TX to RX or strenghtens it.

Depending if the detected wave-form shifts into plus or minus
it should be possible to find out if its iron or noble metal as with
any usual VLF-device.

I know you absolutly will like this text, dear LRL-freaks ,
because now you have a scientific explanation why
some of your detectors REALLY might work.

Indeed its nothing special new, pipe-locators proven work with
this method but they don't claim to find tiny gold coins from
dozens of meters!

So the main question still is:
How weak transmitting-energy still works, how highly sensitive and
selective has to be the receiver so it catches the wanted EM-field
and not all kind of distortions and how large has to be the find so its
possible to use it as "core" and from what distance.

LRL-constructors, please do yourself and everyone a favour and
use some reliable working and very stable long-wave transmitter!
For tests it should output only the same weak amount of energy as it
remains if an usual long-wave sender from very far away would be used.

Because this is exactly what your LRLs usual are dealing with!

For initial and very simple tests place a car inbetween transmitter (must be 200 meters far away,
otherwise the extreme growing field-strenght may even destroy the sensitive detection circuit!)
and where you are standing with your detector. (don't go closer than 20meter to the transmitter
if its switched on with the detector in your hand, or it may get overloaded and damaged).

Now from 50m far away walk straight closer or 10m nearby the car and your detector
has to react absolutly with no doubt, even from 20m away, because this is a huge "find".

If you can't detect a car from 20 meters you never will detect a gold coin from 50 meters.

And stop sweeping the pistol-detector, because this only disturbs the induction-field!

[insight]

Originally Posted by Funfinder

By from far away transmitters and their EM-fields created eddy-currents !!!


This is just a very short explanation.

Also non-ferromagnetic objects are causing eddy-currents and btw.
this is how induction balance works:

Both coils of a detector are like a transformer and the buried object acts as core.
Even mineralized soil acts like this and causes a different energy flow compared to
if there would be nothing near the coil at all (like a transformer completly without a core).


Now we have more or less powerful EM-field sources, transformer cores
(metal stuff) here and there and the LRL detector that is critical in resonance
or better said: extremly stable on the same frequency of one of those far away
EM-field sources.

What I'm doing here is trying to explain why LRL detection might
work - but on a scientific level!

Seen on a larger scale the long wave etc. radio station is the
metal detectors coil #1 and the passive receiver is coil #2.

Now, if someone walks straight into one direction,
of course always holding the coil exactly at its same place
incl. same distance from ground,
because otherwise the field strenght changes and can cause wrong signals,
the induction level of far away transmitter and almost at
the same position (seen from a real big level) staying antenna
will remain the same.

Will remain the same until some "transformer-core" = find
crosses its way or comes closer!

In this case the object distorts the "direct" energy flow from
TX to RX or strenghtens it.

Depending if the detected wave-form shifts into plus or minus
it should be possible to find out if its iron or noble metal as with
any usual VLF-device.

I know you absolutly will like this text, dear LRL-freaks ,
because now you have a scientific explanation why
some of your detectors REALLY might work.

Indeed its nothing special new, pipe-locators proven work with
this method but they don't claim to find tiny gold coins from
dozens of meters!

So the main question still is:
How weak transmitting-energy still works, how highly sensitive and
selective has to be the receiver so it catches the wanted EM-field
and not all kind of distortions and how large has to be the find so its
possible to use it as "core" and from what distance.

LRL-constructors, please do yourself and everyone a favour and
use some reliable working and very stable long-wave transmitter!
For tests it should output only the same weak amount of energy as it
remains if an usual long-wave sender from very far away would be used.

Because this is exactly what your LRLs usual are dealing with!

For initial and very simple tests place a car inbetween transmitter (must be 200 meters far away,
otherwise the extreme growing field-strenght may even destroy the sensitive detection circuit!)
and where you are standing with your detector. (don't go closer than 20meter to the transmitter
if its switched on with the detector in your hand, or it may get overloaded and damaged).

Now from 50m far away walk straight closer or 10m nearby the car and your detector
has to react absolutly with no doubt, even from 20m away, because this is a huge "find".

If you can't detect a car from 20 meters you never will detect a gold coin from 50 meters.

And stop sweeping the pistol-detector, because this only disturbs the induction-field!

are you ok?!!!

[Funfinder]

Oh look, one of our crazy LRL-fanatics or "idolizers" seems to be angry that we
cross his dirty plans by explaining how it either works or not....
Poor boy! Aaaahahaaa!


Can someone remove such dirt comments from lunatic idiots or is this forum
that weak that such ***** have the right to mess it up? I think not!


If it was removed also this post can be removed.
Otherwise I can reply yet much more heavier, if its wanted....
But perhaps its a good warning to other such stupid trolls and provocateurs.

[insight]

Originally Posted by Funfinder

Oh look, one of our crazy LRL-fanatics or "idolizers" seems to be angry that we
cross his dirty plans by explaining how it either works or not....
Poor boy! Aaaahahaaa!


Can someone remove such dirt comments from lunatic idiots or is this forum
that weak that such ***** have the right to mess it up? I think not!


If it was removed also this post can be removed.
Otherwise I can reply yet much more heavier, if its wanted....
But perhaps its a good warning to other such stupid trolls and provocateurs.

You're terrible person. And I think that your wisdom and understanding is not the size of a donkey!

[Seden]

Funfinder,

I remember reading in an old California Mining Journal about a guy who connected a meter to his AM car radio such that when the radio was tuned to a blank spot he could measure the variations in noise amplitude. He used this as he was driving through potential mineralized areas in the desert.
So it would be interesting to duplicate his results with the higher frequency AM Band to be able to see smaller targets.
There is a hand held "Pointer" metal detector made by Falcon called the MD-20 that uses 300 KHZ and can detect a flake of gold for example.

[Funfinder]

Thanx for your interest and your serious information.

The main problem for creating a real reliable AM-detector are the many
factors that has to be calculated within.

The polarization of the signals, the thick soil level below, reflecting mountains,
has the field-strenght of the "outside" AM-station the correct power level for
the detection stage (not too weak but also not too strong), how strong is the
signal at what day or night time (in the evening, night and autumn AM is stronger)
and all such things.

However it starts already that such AM-detector at least must have 2 different
ferrite-coils for usable direction-detection. It needs autogain-control so the
changing and floating AM-field all the time creates the same input-level
or even better - some additional transmitter has to be used which provides
all the time the same "reliable" amount of AM-field-strenght.

Technically seen its very simple - just the fine-tuning and improvements
until some real useful detector comes out can become pretty complicated.


The simple change of the field-strengh-level can have many reasons
so just using some AM-radio which has already a digital field-strenght-meter
(some have a red LED that shows if the signal has reached its highest level)
for shure is not good enough to detect metal or treasures from a distance -
it needs some more sophisticated technics and especially good directional antennas.

[Bill512]

Originally Posted by Funfinder

Thanx for your interest and your serious information.

The polarization of the signals, the thick soil level below, reflecting mountains,
has the field-strenght of the "outside" AM-station the correct power level for
the detection stage (not too weak but also not too strong), how strong is the
signal at what day or night time (in the evening, night and autumn AM is stronger)
and all such things.

I have build a receiver in the low LF band and it gives some interesting readings.
However it works ok only on flat areas while at places with rough terrain mostly reads the geography.