VLF means Extremely Low Frequency and is similar technological innovation Employed in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Listed here are 5 reasons why you might go with a VLF around a PI As https://www.lycantic.com/forum/viewtopic.php?f=2&t=1615505