VLF stands for Quite Low Frequency and is similar technologies used in detectors developed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Allow me to share 5 explanation why you would possibly pick a VLF over a PI https://www.authoraevia.com/forum/topic/gold-detector-finds-that-changed-history/#postid-2469132