Quote:
Originally Posted by Qiaozhi
If the PD needs to be held in a horizontal position, then why does it not detect a target that is behind the operator? How do you know whether the signal is coming from the front or behind?
Also, in your avatar, you are pointing your PD at an angle..
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This occurs in house. There is a site in garden in wich a child loose a small broken gold ring 10-12 years ago, and maybe the open ring causes it. In my avatar is in angle because was detected a closed ring, very old. If you cut a small ring maybe also is hardzarous detectable with common MD, maybe this explain, hope in open field and with old targets can be different, but any project can be different... Oscillator with coil as pistol don't suffer this problem, also loop low impedance you see in other projects can be used in angle.
At this time don't detect behind operator, but yes in sides, right or left. I can know the position of target because when you pass over it, tend to increases the beeps.
Regards
Esteban