VLF stands for Quite Low Frequency and is similar technologies Utilized in detectors crafted for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Here's 5 explanation why you could possibly pick a VLF over a PI Minelab’s GPX 6000 https://kisanlink.com/forums/discussion/dairy-cows-cattle/gold-fields-search-metal-and-gold-detectors