VLF means Extremely Lower Frequency and is the same technology Utilized in detectors designed for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Allow me to share five reasons why you could pick a VLF over a PI The https://www.lycantic.com/forum/viewtopic.php?f=2&t=1614408