VLF means Very Small Frequency and is similar technological know-how used in detectors constructed for coins, jewellery, and relics. VLF detectors broadcast at frequencies measured in kilohertz starting from 3 kHz to 70 kHz. Listed here are five explanations why you would possibly pick a VLF around a PI Now https://www.tapatalk.com/groups/lovinworld/viewtopic.php?f=66&t=14241&from_new_topic=1