VLF stands for Pretty Minimal Frequency and is identical technological innovation Utilized in detectors built for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Here i will discuss five explanations why you may select a VLF about a PI http://gzew.phorum.pl/viewtopic.php?p=607435#607435