MD as long distance

[Esteban]

How a search head of MD can work as long distance. Coil is type pinpointing.

The max. distance was a coin at 70 m. in inland.

[Tim Williams]

Tell us about it.

Tim

[amtech2005]

MD as long distance

Since we are on the subject of long distance. Tommorrow I am picking up a Fisher Gemini-3 for $50 dollars . Only thing thats missing is the connecting piece or arm that goes between the two boxes - "transmit and recieve". The unit makes noise and has 8 AA batteries for each box and No rust inside. I guess it runs around 60 to 70 khz. Anyway I just wanted to know if the arm is metal , like aluminum or a composite material. I might make a "makeshift PVC assembly" if i cant find the factory brackets. I am not sure on a price of a new one but I heard there over $500.00 ??? And how deep they go I have no Idea !! This will be my first 2-box for my collection . Any comments let me know , Thank-You Eugene

[Geo]

Hi Esteban .
Can you discriminate with your long distance detector?????
Who is the behavior in rust objects???????
Regards

[Esteban]

Hi

This only detects silver, gold and copper-bronze, non ferrous objects since the coil is adjusted only for non ferrous. Aluminium cans no detect.

For small objects has not depth, but yes for big items. Object must be in soil since X time.

[ivconic]

?

I just posted some of my experiences in "Testing and Comparing.." thread.
What you saying here is just against my claims. So i am very interested in that subject. Can you describe a bit more that device?
Best regards Esteban!

[detectoman]

hello esteban:

have you the diagrams of these locator? what sistem or components inside,
hola esteban saludos, dime tienes tu mas informes acerca del circuito de ese detector, y dime si esos 14 mts solo los logra en aire, o cuanto puede profundizar, dime por favor a que frecuencia logra eso, y que marca o procedencia es
te mando un abrazo y espera correo despues pues tengo la pc en el taller y ahorita solo entro brevemente, y con esta pc prestada

ok gracias por compartirnos

detectoman mexico

[Esteban]

Hi post this, because you know detector based on coils. In this case, as coils no touch soil, no suffer capacitance or mineralization. Variation of few hertz in coils is converted in audio, so items can be detectable at certain distance, and this coil system is accuracy, but more slow than antenna. Frequency in order 300 Khz tends to detect cigarette paper, but good points is near 150 kHz. You need this semi-high frequency for to obtain variations in some hertz. I built one in 59 kHz very stable based in off-resonance (this is good for long distance and need only one coil). Other type can be achieved. Here antenna type (I with beard and cigarette -Ivconic: I leave it 7 years ago!!!)

[robert]

...

"...The max. distance was a coin at 70 m. in inland...."

!!!?????!!???
Esteban are you serious??? What are you talking about?
Ha,ha,ha,ha,ha.....

OK....I'll go away from here...No hard words no name calling...


Anybody who take this thread seriously is an complete idiot!!!

[Seden]

There is merit to this device

The only part I have trouble with is detecting paper,but far as metal in soil causing a shift in the frequency at that point seems possible. You'd have to have an extremely high Q resonant coil to detect a shift in the natural electromagnetic fields. Considering that metal in the earth disturbs the matrix which is a RLC circuit to begin with it sounds very interesting. I know Esteban has been experimenting constantly for 30 years or so.
With induced polarization you get a response from dissmenated ore because of the conducting grains are in contact with one another but you also get a response from sulfides,some oxides and clay.

For those who are interested go to the US Patent Server and do a number search on patent 6,414,492. Then starting with the listed patents at 1985, go towards the present. In particular interest are:4,507,611-4,686,475-4,841,250 and 5,148,110.

Randy

[robert]

???


"...The max. distance was a coin at 70 m. in inland...."

C'mon...never mind project and principles...I can live even with most crazy ideas.....but just pay attention on Esteban's claim above...!!!!????

Even it was 70cm, it would be impossible....but 70m !!!!????
I dont have words just

[Esteban]

If you put effort in it, you can. As Randy said, a good coil is necessary. Also adjust the resonance the max. possible, at pF range. I use off-resonance type. I use capacitance box and adjust the pF range with trimmer.

[Esteban]

Robert, some LD infos and others (a very minimal part). Do you can follow the path? Sometimes, do you work in it?

[GOLDEN LILLY]

kindly enlarge

Hi ESTEBAN,
kindly enlarge the pictures you posted, I am willing to build it and experience what you have experienced in the field. I am serious ok.

[Seden]

Robert consider this

Robert,

What I'm thinking is the distance that VLF magnetotellics can detect a body of ore. Granted the ultra-low frequency gives you deep skin effect and only good for a very large deposit. Now scale the frequency up and shrink the size of the object accordinly and now it doesn't seem difficult. Study up on magnetotellics,think about the scaling factor and let me know your thoughts.

Randy