New detecting method?

[g-sani]

http://iospress.metapress.com/content/q767074h6n070577/

I found this page accidently and I thought lets have a look because it is something coming from a University and I tried to read the concept but I couldn't.
Do you have to pay for it? This is what I understood.
May be I am wrong.

[Seden]

By typing in the title on Google, I found enough of the article here via Google Books that explains the tests with a schematic and graphs of the results. Wow, very interesting and nice to have a new idea for our hobby.

SWR take this very seriously.

Randy

[epitopios]

to g-sani
the article says:
A new type of magnetic field detection system, which can operate at a frequency below 1 kHz, is proposed and developed. The system consists of a 40-turn-coil to generate the magnetic field and a magneto resistive sensor to detect both the amplitude and the phase signal of the magnetic field induced by eddy-current and magnetization of the samples. The magnetic field detection of ferro- and non-magnetic samples using the system is demonstrated and discussed.

accidentaly , last days I made a receiver 100Hz-11Khz
if you find a operator uder 1Khz , maybe I say maybe ....or if someone can give us a design????
να τα παντρέψουμε , τι λές Γιώργο ?
friendly , epitopios
σε Π.Μ.

[J_Player]

Originally Posted by epitopios

to g-sani
the article says:
A new type of magnetic field detection system, which can operate at a frequency below 1 kHz, is proposed and developed. The system consists of a 40-turn-coil to generate the magnetic field and a magneto resistive sensor to detect both the amplitude and the phase signal of the magnetic field induced by eddy-current and magnetization of the samples. The magnetic field detection of ferro- and non-magnetic samples using the system is demonstrated and discussed.

accidentaly , last days I made a receiver 100Hz-11Khz
if you find a operator uder 1Khz , maybe I say maybe ....or if someone can give us a design????
να τα παντρέψουμε , τι λές Γιώργο ?
friendly , epitopios
σε Π.Μ.

Hi epitopios.

There is no circuit shematic showing components or values.
The designers from the Okayama University gave this vital information that explains the technique to discriminate metals:

[g-sani]

Originally Posted by epitopios

to g-sani
the article says:
A new type of magnetic field detection system, which can operate at a frequency below 1 kHz, is proposed and developed. The system consists of a 40-turn-coil to generate the magnetic field and a magneto resistive sensor to detect both the amplitude and the phase signal of the magnetic field induced by eddy-current and magnetization of the samples. The magnetic field detection of ferro- and non-magnetic samples using the system is demonstrated and discussed.

accidentaly , last days I made a receiver 100Hz-11Khz
if you find a operator uder 1Khz , maybe I say maybe ....or if someone can give us a design????
να τα παντρέψουμε , τι λές Γιώργο ?
friendly , epitopios
σε Π.Μ.

Well epitopios something like gold gun comes up to my mind.
I don't know, people involved in electronics can tell us more.
In Greece they say that 20Khz is allright for a receiver to be used for treasure hunting since there is transmition over here in this frequency.
The thing is you have to know what the meter is reading plus learning to read the audio signal is important as well.
VLF transmitters are not an easy subject when to be used for treasure hunting.
Many years back I used a AL718 and I was suprised to see that it was
responding in a known target(50kilos) of copper wire from 50mts away.
Then it was many VLF stations in use for Navy but now there are not.
I have it always in my mind as a problem to be solved in order to use my AL707 properly but I always hold back until I can see something serious as a solution.Okm sells 10Watts VLF Txs for big money.
I believe that 50W is a must for long range detection when using a receiver.
Any possible help in that is welcome.

[WM6]

Originally Posted by g-sani

I believe that 50W is a must for long range detection when using a receiver.


.

50W? Do you intend to sense gold from home on other hemisphere?

0.3W can be here far enough to reach way deeper than signals from former navy stations.

Secret is not in Tx electronic and its Watts but in proper build Tx antenna for ULF/VLF band.

[Fred]

Originally Posted by WM6

Secret is not in Tx electronic and its Watts but in proper build Tx antenna for ULF/VLF band.

Maybe this is why you need more power with inefficient antennas (ferrite), or gigantic military stations far away

[g-sani]

Originally Posted by WM6

50W? Do you intend to sense gold from home on other hemisphere?

0.3W can be here far enough to reach way deeper than signals from former navy stations.

Secret is not in Tx electronic and its Watts but in proper build Tx antenna for ULF/VLF band.

0.3W?
Why nobody did it then?
What I know is high power and very long aerials because of the longer wavelength.
If low power could be used then they would do it.Well as far as I know.
The thing is which one would be best for treasure hunting whith a receiver to go on target?
1. Sending the frequency into the ground using a probe?
2. Air transmision using a special aerial? What type of?

[Ernie]

Dear who ever

Re: This is a LRL/Remote sensing thread. Your article relates to a SAMPLE NOTHING TO DO WITH REMOTE SENSING. Could you please take this dissussion elsewhere via Carl

kind regards and happy prospecting

Ian (ERNIE) Parker

[WM6]

Originally Posted by Ernie

Dear who ever

a SAMPLE NOTHING TO DO WITH REMOTE SENSING.

Ian (ERNIE) Parker

Hi Ernie which SAMPLE?

Who assessed what LRL is and what LRL is not, and under which criteria?

Have you met Mr hung today?

Happy long range locating to you.

[Ernie]

FROM THE THREAD LINK - A new type of magnetic field detection system, which can operate at a frequency below 1 kHz, is proposed and developed. The system consists of a 40-turn-coil to generate the magnetic field and a magneto resistive sensor to detect both the amplitude and the phase signal of the magnetic field induced by eddy-current and magnetization of the samples. The magnetic field detection of ferro- and non-magnetic samples using the system is demonstrated and discussed.

There you go my special needs buddy, SAMPLE, come on now you say it, SAMPLE. WELL DONE, these tests are carried out in a uni lab, no long distance across location. Because these are done in a class room with a SAMPLE.

If you do not understand what a SAMPLE is please reply back and i will spend some more time with my special needs buddy.
kind regards and happy prospecting

Ian (Ernie) Parker


Keywords

[Krzysztof]

Honourable ERNIE.
The experts on this forum express in majority with electronics of, geophysics, interdisciplinary.
They are here surely and followers LRL, though they have not psychophysical abilities - no became Rockefeler.
Colleague is here also, which examples about "gold gun" and LRL numbered several thousand fasts.
I ask, do not go with this road, to to enlarge the quantity of fasts have protested for several days only - derange discussion.
You are in subject of new ideas and new technologies - propose something interesting also - nobody will mock you.
You in library will find out, that the method the geophysics (in this VLF) the using advanced techniques of looking for deposit the kimberlit of, gold, of iron ... they are for geologists commonplaceness.
Here interested they look for straight lines of methods the chests of treasure would find - every giving effect method is admissible.
Nobody likes paying for miraculous black cases but fraud (new LRL).
Boast with your construction we - invite.
Best regards Chris

[Seden]

Well said Chris! We are not fools but men of experience sharing together our knowledge.

Randy