VLF stands for Quite Reduced Frequency and is identical know-how Utilized in detectors designed for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Listed below are 5 main reasons why you could choose a VLF about a PI Another http://nec.phorum.pl/viewtopic.php?p=753887#753887