I really cant understand you but with that what you are saing that there is no real resonant frequency for gold, and of course other elements you are demanting this forum. YOu said alone that you are selling machines - LRL what are working at as you say ;;fantasy gold frequency;;. The list of frequencies what you give to me i ll try it but i think that ::JUST GOLD;; you cant find at two diferent frequencies if thay are not harmonic, and 13 KHz and 14 KHZ cant be harmonic frequencis.
Metal detectors are other think and there is no need here for discusion about them.
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