VLF means Pretty Very low Frequency and is similar technology Utilized in detectors created for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from three kHz to 70 kHz. Here's 5 explanation why you might choose a VLF around a PI After intensive screening and https://www.driedsquidathome.com/forum/topic/98987/gold-detector-finds-from-ancient-times