VLF means Pretty Minimal Frequency and is identical engineering Employed 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 5 explanations why you could choose a VLF over a PI Following comprehensive http://leydis16.phorum.pl/viewtopic.php?p=1009624#1009624