Quote:
Originally Posted by Fred
Great job JP ! ...
This is a circuit that will detect metals for sure ! (Btw, does it belongs to this forum ?  )
Anyway i am sure this is a good schematic to build a working pistol detector.
At a later point one could upgrade it with an electrostatic detector connected anywhere on one of the coils and make it a perfect LRL project.
(I hope mesy something transfered the right amount to your account)
No one can claim anymore " i could not find a complete schematic on the forum" !
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Hi Fred,
Yes it belongs in this forum.
We have learned that a radio receiver is an LRL, a static electricity detector is an LRL, a frequency generator is an LRL, a bent wire is an LRL, a pendulum is an LRL, and a stick is an LRL.
Everything is an LRL.
Why not a well designed antique metal locating LRL?
But we must be careful not to attach an electrostatic detector to this LRL.
This will make it unsuitable.
Remember what kahyal said when I showed him an electrostatic detector project:
"...but this project is a electrostatic field detector and not a pd that detectors metals 
"
We know kahyal will be happy with his schematic of a fully working pd that detectors metals, and will begin building it very soon.
But others who want a combination of electrostatic and VLF will be able to receive more of the signals that are found with these unshielded loops to complete the gold signal.
Of course these experimenters will probably want to pulse their electrostatic section with a frequency generator at ELF such as the frequency of gold or silver to add the final enhancement of signal processing.
But these mods are outside of the scope of this project.
This will be kept strictly as a perfect unmodified factory design that people can build so they can tune signals that no other commercial locator will detect.
Then experimenters can make modifications as they choose after they begin with an authentic PD that detectors metals.
Best wishes,
J_P