VLF stands for Pretty Lower Frequency and is similar technological innovation used in detectors crafted for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here i will discuss 5 reasons why you could select a VLF about a PI http://forum.446.s1.nabble.com/Modern-Solutions-for-Gold-and-Metal-Hunting-td136577.html