VLF stands for Extremely Reduced Frequency and is identical technology used in detectors designed for coins, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from three kHz to 70 kHz. Here i will discuss five explanations why you might choose a VLF more than a PI https://www.gamersmake.com/fora/viewtopic.php?t=21043&sid=eb6b31903cdabdc5621aac3bd7cdfe5e