VLF stands for Very Reduced Frequency and is the same know-how Utilized in detectors developed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Allow me to share 5 explanations why you could go with a VLF more than https://mooc.ifro.edu.br/mod/forum/discuss.php?d=43089