VLF stands for Very Minimal Frequency and is the same technological innovation Utilized in detectors constructed for cash, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Here's 5 explanations why you might pick a VLF in excess of a PI https://www.navacool.com/forum/topic/279057/gold-detector-discoveries-that-stun-newbies