TITLEBAR##$cfgWebTitle - Metal Detectors - Projects - ETI561 KEYWORDS##metal detector, metal locator, BFO, Phil Wait BANNER##ETI TITLE##ETI561: Simple, Sensitive Metal Detector CATEGORY##by Phil Wait TEXT## This project is one of the better BFO designs, ultilyzing a crystal reference oscillator and a digital mixer.It was originally published in an issue of ETI magazine, and reprinted in the 1981 ETI book "How to Build Gold and Treasure Detectors." ETI has been merged into Everyday Practical Electronics, a popular electronics magazine that is published in the UK by Wimborne Publishing, Ltd. END LINKS## ETI561##$cfgPageUrl/projects/eti561/eti561_150.pdf##ETI561_150PDF##_new##(PDF-400K, 150dpi) ETI561##$cfgPageUrl/projects/eti561/eti561_300.pdf##ETI561_300PDF##_new##(PDF-1181K, 300dpi) END