DRS Ground Exper Pro Thread

[landman]

Been doing extensive testing and will be publishing my results very soon.

[landman]

Here's my first experiment on making this machine "sing" for coins, even though it's not designed for coins, I still want to take it's unique discrimination to task when the snow melts. That being said, here's part 1. https://youtu.be/NKnBhoU6p-k

[Orbit]

DRS Ground Exper VLF the machine !

[landman]

Please understand I did this at 80% sensitivity and indoors. DRS informed me after I sent them the video that I should be able to get much more improved results outside. Part 2 will be just that. Enjoy part 1. https://youtu.be/kiWmKysGvag

[mschmahl]

Air-test depth is not much for such an expensive machine. I hope it will be much deeper outside.

[landman]

Yes me too I'm about to dig my 80 cm hole here in the next day or so place an aluminum can and video the experience. More to come.

[landman]

All buried and waiting for the snow to melt to begin testing.

[landman]

People have asked, since on all the demo video posted on Youtube that there a delayed reaction giving the impression the sweep speed for the Exper needs to be slow. Any deep seeking machine should go slow for deep targets, however in this 1 minute video you can see form yourself what the Exper can do.

https://youtu.be/tuABMEl0DRg

[landman]

Here's a new video on iron discrimination and wait till you see the
surprise at the end with aluminum.
https://youtu.be/BiJMLD_6t0M

[mschmahl]

That is nice. Have you tested silver against aluminium?

[landman]

Yes and you see the goal of this unique detector is to get as many junk targets to read as iron.
Size of the object matters. Silver shows as HQ Valuable and or Valuable
Aluminum depending on size will show mainly as Iron but pull tabs can show up as gold.
So what you do is increase the discrimination (there are 5 levels) to level 4 and most/some of the pull tabs
show as iron. In discrimination #5 all pull tabs show as iron. But small gold rings show as iron as well.
The size of the gold matters. Larger than a gold ring like a 1oz. gold coin should in
discrimination #5 show up as gold or HQ valuable. (not tested this size gold yet because I have not purchased
a coin yet)

[Funfinder]

OK, but the challenge now will be that the depth at high mineralized soil
will compensate the discrimination or "find gold only" possibilities compared
with a good non-motion or IB-detector.

Either you search exactly for a certain gold-object-size / gold-alloy
or you might accept to find at least steel and alu, too, because otherwise
the risk to lose golden objects could be too high.

[landman]

The. latest update is the company representative tools me in Feb 2021 that they are soon to release an updated version of the DRS Ground Experience. I'm actually excited at what they may have. So far though...crickets.

[Orbit]

To unravel the enigma Ground exper is a pulse detector with a magnetometer the levels mentioned are actually sampling 5 pulses 84us wide with short 44us pauses between them and then a single 250us pulse with a 1.7ms pause. The magnetometer works independently of the pulse signal processing, the input amplifier is a 5534. In the end, nothing special.

[Orbit]

I had this device repaired, after the repair the man who owns it says that it does not have the same depth as before, he claims that he detected a box of nevia cream in the air at 2 meters and in the ground at 2.60 cm.. My opinion is that it is an impossible mission, has someone tested it this device and what are the actual depths?