VLF means Incredibly Small Frequency and is the same know-how Employed in detectors built for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Listed here are 5 explanation why you could choose a VLF in excess of a PI https://www.cemkrete.com/forum/topic/118847/gold-detector-adventures-beyond-the-map