VLF stands for Pretty Reduced Frequency and is similar technologies Utilized in detectors crafted for coins, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here's 5 reasons why you may choose a VLF in excess of a PI The Fisher https://www.navacool.com/forum/topic/279100/how-to-detect-jewelry-using-a-metal-detector