VLF means Very Lower Frequency and is similar technological know-how Employed in detectors created for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Listed below are five explanation why you might decide on a VLF over a PI Your http://taniecirlandzki.phorum.pl/viewtopic.php?p=119225#119225