VLF means Incredibly Reduced Frequency and is the same technological innovation used in detectors created for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Listed below are five explanation why you may pick a VLF above a PI Minelab’s https://dp5.boards.net/thread/1264/multi-frequency-metal-detectors-guide