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We tested Aka Smart as well as some other ib detectors, coins specifically 20 Bulgarian cents at 35 cm approximately in the country! At that depth, it detected the target as well as the Relich Striker and some others, which I will not mention for certain reasons of respect for some manufacturers. Mostly they detected but showed like iron! The second thing we noticed is that when we put one thin ceramic with a diameter of about 1cm - 1.5cm, no one felt the coin anymore! SD 2000 Minelab is the only one that detected the coin even as if the ceramics had increased the sensitivity. Note that the sd 2000 ceramic was rejected by the geb balance before the test. Can someone explain the reason?
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