PinPointer- Has anyone seen or built this?

[kt315]

Marty
just Eddy's Malysh has real full discrimination FERROUS-NON FERROUS. i hope its the discovery for you today.
we need more advanced schematics. just great gurus in f-electronics can give us the goodies. EDDY is guru. believe me.

[chemelec]

Yes it is Italian.
If you post a Link to the Original Article, It should be easy to translate.

(I just typed in a Tiny Bit for a Test)

Se inprossimita delta bobina L1 viene a trovarsi
un tubo metallico. I'ampiezza del segnale di BF
subisci un'attenauazione:


(English
If the Inproximates Delta coil L1 is found
A metal tube. The amplitude of the BF signal
Suffer a wait:

[MartyJ1963]

Hiya All,,,,I came across this Pinpointer a while back and was going to have a go at making it. I just wondered if anyone had seen this design before or had ever attempted to build it? Also, I made a smaller version of it in Sprint layout 6 and was wondering if anyone could check my drawing to see if it's correct please? I've posted a copy of my layout,,the original board and schematic and I made a PDF file of the 7 pages with the information about it ,,,,it's not in English,,It may be italian but not sure for certain. Thanks,,,Marty