VLF means Extremely Small Frequency and is similar know-how used in detectors constructed for coins, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Listed here are 5 reasons why you may pick a VLF around a PI Your just lately https://kisanlink.com/forums/discussion/agriculture-discussion/metal-detector-secrets-for-finding-coins