VLF stands for Really Small Frequency and is the same technologies used in detectors constructed for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Listed below are 5 reasons why you could possibly select a VLF around a PI https://www.lycantic.com/forum/viewtopic.php?f=2&t=1612790