VLF stands for Incredibly Low Frequency and is identical technological innovation used in detectors developed for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Listed below are 5 explanation why you could pick a VLF about a PI Reap http://taniecirlandzki.phorum.pl/viewtopic.php?p=117858#117858