Stack of Silver Coins Miss Detection, CTX, others....

[bklein]

There seems to be a recent rash of threads/videos about the CTX and other detectors not detecting a stack of silver coins placed under the coil in certain orientations. Anyone understand what is going on? Why would they avoid detection on a CTX? I never found any silver coins with my CTX so nothing to experiment with.... :-)

[WM6]

It is not only about silver coins. The same happen with copper and other alloy coins.

As you already stated, the catch is "in certain orientations".

Additionally in stack, coins loose their mutual galvanic connection and act mostly as single coin "in certain orientations".

[Koala]

I have just tested this https://www.youtube.com/watch?v=0QPbZ2_L1yg on my F1265x

Makes no difference if it one, six or seven. The detection depth is identical.

The sound is more "woolly" when a stack is on edge. With a single coin I get a short sharp double beep. With the stack each beep is longer and more rounded.

[Skippy]

I've seen talk about this effect on the Deus ( with an earlier software version ) on Dankowski's forum. I didn't follow it, as I don't use a Deus, but the stack of coins appeared like a target that was "more than 99" on the ID scale, and rather than reporting as a "99", it produced silence.

[Koala]

I have found a couple of pocket spills that several other people had walked over first. Always thought it was because they were digging by numbers and I will dig any go signal.

Guess it's more to do with the actual algorithms and how it copes with the individual incoming signals from each coin.

I don't have a DD to test with to see if the coil type makes any difference.

[getsa]

do not trust the digital, better works with analogue, it does not miss and does not "interpret" what may be underneath...

[soverey]

most will be amazed how easy some targets are missed by detectors , for example a man wedding band (ring) made of gold buried at under 10 cm was detected as iron (sound) by 2 distinct minelab safari metal detectors. In order to know your detectors , do some proper test in soil. Some detectors lose depth in soil more than others.

[Koala]

most will be amazed how easy some targets are missed by detectors , for example a man wedding band (ring) made of gold buried at under 10 cm was detected as iron (sound) by 2 distinct minelab safari metal detectors. In order to know your detectors , do some proper test in soil. Some detectors lose depth in soil more than others.

Interesting as a women's wedding is an easy target with the F1260/5X, IDX or Bandido at twice that depth. Although results vary according to the ground you are testing with.