some cosiderations

[FrancoItaly]

Hi All

- it's reasonable that ions or other signals they go 100 m. but not in the air, there is a better connection... the ground ! And so not a long range locator but a one meter locator or less it's necessary...

- as Esteban says many systems are good for the job, magnetic, electric, infrared...

- perhaps the circuit closing it's the body...

- Esteban's instruments and mineoro have a metallic handle ?

- transmitter coil is a sort of pump for a receiver coil ?

I'm studyng similar instruments but one problem it's gold targets buried for long time...