THE FERRITE TREASURE SENSOR

[Morgan]

PD

how is the response of your detector to Cell Phone EM or when thunder happens or when you turn the room light off and on , did you test this ?

it is more strange to me that why it does not detect the object from behind ? does the ferrite antenna make these one way detection ?

I made the test with my pistoldetektor ,when i turn on and off the room light,i get signal in Passive Receiver,more than 10 meters distance from 220V ,60 W light.

[Esteban]

how is the response of your detector to Cell Phone EM or when thunder happens or when you turn the room light off and on , did you test this ?

it is more strange to me that why it does not detect the object from behind ? does the ferrite antenna make these one way detection ?

Appears not detect behind this small items, sure with big items.

Yes, sure strong sources as thunder will produces falses...

[Geo]

This occurs in house. There is a site in garden in wich a child loose a small broken gold ring 10-12 years ago, and maybe the open ring causes it. In my avatar is in angle because was detected a closed ring, very old. If you cut a small ring maybe also is hardzarous detectable with common MD, maybe this explain, hope in open field and with old targets can be different, but any project can be different... Oscillator with coil as pistol don't suffer this problem, also loop low impedance you see in other projects can be used in angle.

At this time don't detect behind operator, but yes in sides, right or left. I can know the position of target because when you pass over it, tend to increases the beeps.



Regards

Esteban

How old was the child ???
25...30 years old... sorry but i rememberd something
Regards

[Esteban]

Part of problem of detection in angle was solved.

Original ferrite position present small surface regarding target. 90º was girated and now present more surface and angle is not a problem.

[humhum]

The 60Khz Ferite Receiver VLF

schematic

[Morgan]

???

schematic

Antenna ???
Its for gold locator ?

[humhum]

No for gold ,Morgan this is only passive receiver side for absorbable LF 50Khz -80Khz.

[detectoman]

this antique circuit of brother humhum sems cool' morgan
but the thunting enginers not think in simple circuits, but complicate jaja
is one extrange mode of mind
i only love' lrls., are superior to complicate gpr jja

i need build one simple and manual radar, i kilo maxime wheigt, go make this hha

[Morgan]

Circuito

this antique circuit of brother humhum sems cool' morgan
but the thunting enginers not think in simple circuits, but complicate jaja
is one extrange mode of mind
i only love' lrls., are superior to complicate gpr jja

i need build one simple and manual radar, i kilo maxime wheigt, go make this hha

Hola Dman

Pero como lo vais a construir se Humhum hay hablado que no está completo ??? Y no es para ORO...

Abrazos

[alexis]

Hi Steven, I have the walkman but as I do the preamp and where I get this ferrite, thanks.

[jalfal]

Thanks a lot.

[enjoykin4]

Частота (Frequency) для:

алюминия (aluminium) (A1) равна 3245 кГц , = 3.245MHz
для меди (copper) (А2) 3872 кГц , = 3.872 MHz
для железа (A3) (iron) 4731 кГц , = 4.731 MHz
для серебра (silver) (А4) 5278 кГц , = 5.278 MHz
для золота (gold) (А5) 5621 кГц , = 5.621 MHz
для платины (platinum) (A6) 5722 кГц , = 5.722 MHz

К174ХА3, аналог NE545B

Source

http://www.realstrannik.ru/forum/29-tpu/267-tpu-otto-roberto.html?start=1080

[abdou2014]

Coil

Is there anybody who knows how to make the double O coil 50 + 50 of esteban Pls ???

[WM6]

Why you insist to post your question "here and there", and not where did you read about such OO Esteban coil?

If you need to play puzzles, then solve it by yourself.

[abdou2014]

Sorry i shouldn't have done this .