THE FERRITE TREASURE SENSOR
 

Absorption type. In the way.

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

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

.....Good Luck with your new pistol

hi esteban
 

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

serious
 

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 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,......

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.

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...

IRON MASK
 

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

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

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.

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

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

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

Saludos

Esteban

Hi, new project.

Regards

Esteban

.....Good Luck new project.
congratulations

Ferrite:

Thanks very much!

Two ferrites glued between them.

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

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

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 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

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