VLF stands for Pretty Very low Frequency and is the same know-how Employed in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Listed here are 5 main reasons why you could possibly go with a VLF http://inquisnower.phorum.pl/viewtopic.php?p=749327#749327