Hello Franco
Let me say something about LRL´s
The IONIC/ELECTROSTATIC :
1-To work as LRL,need low humidity around 10 to 40 %,if goes to 60% ,not work and become very unstable.
2- Work fine when ground is dry.
3-Work fine during the day,work very bad or not work in dark(yes,this is funny).
4- Detects more distance orietation North to South.
Everybody knows this information from MINEORO,but the fact is I CONFIRM THIS with my experiments.
The Passive Receiver,Electromagnetic Resonating with Sample,the PD,the PDK:
1-It works as LRL,with 10% or even high humidity more than 60%.
2-Work fine when ground is dry,even better if is wet .
3-Work fine in day ligth or in the dark.
4-Detects more distance orientation North to South.
See the advantage.
BTW: None of them locate Walls,trees or rocks
Attachment 16338