VLF stands for Really Low Frequency and is identical technological innovation used in detectors designed for coins, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from 3 kHz to 70 kHz. Listed below are five reasons why you might choose a VLF more than a PI http://classichonda.phorum.pl/viewtopic.php?p=178966#178966