VLF means Pretty Low Frequency and is identical know-how Employed in detectors built for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Listed below are five main reasons why you could decide on a VLF over a PI Second, http://eurotrucksimulator.phorum.pl/viewtopic.php?p=1529480#1529480