VLF stands for Extremely Very low Frequency and is similar technologies Utilized in detectors built for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Listed below are 5 reasons why you could select a VLF in excess of a http://taniecirlandzki.phorum.pl/viewtopic.php?p=117858#117858