VLF means Pretty Small Frequency and is identical know-how Utilized in detectors developed for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Listed here are 5 reasons why you might pick a VLF over a PI As an archaeologist, http://inquisnower.phorum.pl/viewtopic.php?p=750251&sid=aa65f24a6c78d97b3e0fe9a56c6667bd#750251