VLF means Quite Low Frequency and is similar know-how Utilized in detectors created for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Here i will discuss five reasons why you could go with a VLF above a PI The http://illuminandi.phorum.pl/viewtopic.php?p=570649#570649