VLF stands for Very Low Frequency and is the same technological know-how Utilized in detectors built for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from three kHz to 70 kHz. Listed here are five explanations why you could possibly select a VLF more than http://family.bigbrother.bg/forum/topic_show.pl?tid=238943;msg=NewPost;sid=7de5b3574a1f2bf1789ea8d6e3506a1c