VLF stands for Incredibly Small Frequency and is the same technology used in detectors designed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here's five explanation why you might select a VLF about a PI Our writers and http://taniecirlandzki.phorum.pl/viewtopic.php?p=120667#120667