VLF stands for Really Reduced Frequency and is identical technological innovation Employed in detectors crafted for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz ranging from 3 kHz to 70 kHz. Here's five reasons why you might pick a VLF about a PI 2nd, make sure http://lkf.phorum.pl/viewtopic.php?p=53094#53094