VLF stands for Quite Small Frequency and is the same technologies Employed in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Allow me to share 5 explanation why you may choose a VLF in excess of http://ostrza-avalon.phorum.pl/viewtopic.php?p=399658#399658