VLF means Quite Low Frequency and is identical engineering Employed in detectors designed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Listed here are five reasons why you could choose a VLF in excess of a PI Furthermore, http://leydis16.phorum.pl/viewtopic.php?p=1026053#1026053