VLF stands for Really Minimal Frequency and is similar technological innovation Utilized in detectors developed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Listed here are 5 reasons why you may go with a VLF above a PI https://ava.ifsul.edu.br/reitoria/mod/forum/discuss.php?d=38254