VLF stands for Really Reduced Frequency and is the same technology Utilized in detectors created for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from three kHz to 70 kHz. Listed here are five explanation why you might go with a VLF above a PI https://www.sociomix.com/c/ugc/gold-prospecting-tips-using-a-metal-detector/971791768477466