VLF means Incredibly Reduced Frequency and is identical technological innovation Employed in detectors crafted for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Allow me to share five reasons why you might choose a VLF over a PI The http://leydis16.phorum.pl/viewtopic.php?p=1034261#1034261