VLF means Incredibly Small Frequency and is identical technological know-how used in detectors crafted for coins, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Here i will discuss five reasons why you would possibly select a VLF around a PI http://taniecirlandzki.phorum.pl/viewtopic.php?p=119213#119213