Metal detector with double tone and reject discriminator- new schematic

[ivconic]

Where did that schematic come from?

Ivconic: 100 pF is nothing, and not meant to send signal anywhere, but rather to cancel stray capacitance from sloppy wound coil imo. It seems that Sasho has not been around for a while. You could make circuit board to go both ways to see which one works best. I think Sasho's design has been tried and works.

Thanks Technos!

[aft_72005]

aft_72005 now i am confused? Part of schematic you are posting now is not what i am confused about!
That oscillator is clear to me.
The other one part of schematic i posted twice (first Sascho's and second with my wrong corrections) is what i wanted to clear up.
Regards!

Ivconic, ok I understand . but I believe sascho designs are correct .
May be need some fine setting at practice .
But strange , we cannot meet sascho here ?
Best regards.

[peih]

Can someone help me with this scheme, PCB

[sinko1]

please upload pcb. Thank you