Another Study to confirm LRL Detection of Buried Metals

[Astrodetect]

Hello All
Yes Esteban I agree you need a coil in order to be
able to detect magnetic fields of buried metals.
But please explain how you can do this using an
IB Metal Detector?????You have much experience in
this subject.
Thank you

[J_Player]

Hello All
Yes Esteban I agree you need a coil in order to be
able to detect magnetic fields of buried metals.
But please explain how you can do this using an
IB Metal Detector?????You have much experience in
this subject.
Thank you

Hi Astrodetect and Esteban,
I would also like to know this technique. From what I know, IB detectors are very unstable when you tune them to the limits of their sensitivity. What circuits can we use to keep the IB detector stable for use in locating distant buried metals?

Best wishes,
J_P

[Esteban]

Hi Astrodetect and Esteban,
I would also like to know this technique. From what I know, IB detectors are very unstable when you tune them to the limits of their sensitivity. What circuits can we use to keep the IB detector stable for use in locating distant buried metals?

Best wishes,
J_P

I prefer an off-resonance type, because not depend of the zero in coils. An only IB detector (or another type) doesn't work alone. This is supporting by RF sensor. The white noise of RF receiver (FM) "help" the final audio stage (beeper), because the beeper is in the edge with this method. Also because the RF detector make "his job". So, we have 2 detectors.

[WM6]

I prefer an off-resonance type, .

You are constant off-resonance type.

[detectoman]

hello esteban: then the circuit 5 of pd is fm?

[goldfinder]

What can you say Mike(Mont)?
There are people that they will pass their time in this life whith no improvement at all.
But don't worry my friend there still hope for them.
A friend of mine says that there is a medicine for this condition.
You can always give them a light to medium stroke using a frying pan at the upper back of their head( ktong.. is the right sound to be heard) and bingo their brain will start working.

Actukally a near death experience is the best as they get to review their life and find out what to total screwed up mess they are.
Goldfinder

[WM6]

Actukally a near death experience is the best as they get to review their life and find out what to total screwed up mess they are.
Goldfinder

Very good! But: why "they" and "their"?

Do you belong to the immortal?

[Esteban]

hello esteban: then the circuit 5 of pd is fm?

You can use FM radio receiver instead ferrite section.

[Astrodetect]

Hello Esteban
Maybe it would be better to use a phase comparator to read the difference in phase modulation of the TX of metal detector instead of FM receiver?
What is your opinion?
Thanks again

[Esteban]

Hello Esteban
Maybe it would be better to use a phase comparator to read the difference in phase modulation of the TX of metal detector instead of FM receiver?
What is your opinion?
Thanks again

Is possible. As you know, when is transmitted IR rays, for example, at 1 Khz, you hear the tone in the FM receiver. This appears a kind of phase shift in the receiver (FM). The phenomenon causes by buried metal in the ray change the state of phase shift and can be converted in audible signal. Remember that here the IR is the transmitter. I think your TX coil must be automodulated in audio in this case, the same of the Heathkit TX.

[Astrodetect]

Thanks Esteban
So if we use a phase comparator and insert in one input the TX signal modulated at 500hz from the Heathkit, and in the other input the signal from the RX stage then we get the difference when we are in the vicinity of the phenomenon of buried metals????
Thanks

[detectoman]

the pd version 2 little components

hi guys, here show the second version experimental of pd, these is very nerveous, but very promise, but this is in exaustive modification, due excesive brious, tries for put the correct stabilization and voila! i think this draft more in warm sun, here we have winter, but these detect too ufos

[Seden]

Another Study to confirm LRL Detection of Buried Metals

Dectoman,

Very good on the photo of your detector. Is the circuit board your using XXX-PC? The idea about detecting the phase shift makes sense and more accurate I would think than using your ear.

Is that detector based on Estebans IR scheme?

Randy

[detectoman]

hello seden, no this is pistol detector of alonso of south america, this came from private forum, have others circuits to turn, this detector is very complex for equalibrate