VLF stands for Extremely Small Frequency and is similar know-how used in detectors built for coins, jewelry, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from three kHz to 70 kHz. Allow me to share five main reasons why you could possibly select a VLF above a http://family.bigbrother.bg/forum/topic_show.pl?tid=238945;msg=NewPost;sid=159865ccbd09bc856ac1aca2d1cc7a5a