VLF means Extremely Small Frequency and is the same technology Employed in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Listed here are 5 explanations why you may choose a VLF above a PI Being an http://leydis16.phorum.pl/viewtopic.php?p=1034261#1034261