TITLEBAR##$cfgWebTitle - Metal Detectors - Projects - Frisker KEYWORDS##william sheets, rudolf graf,metal detector,bfo,frisker BANNER##Poptronics VAR1##$cfgBasePagesUrl/metdet/projects/frisker TITLE##Build the Frisker CATEGORY##by William Sheets & Rudolf F. Graf TEXT## This project is a BFO packaged as a handheld device. The reference oscillator is a crystal, and the search oscillator is tuned with a varactor using a potentiometer. It appeared in the November 2002 issue of Poptronics, which is now the Poptronix website. END LINKS## Build the Frisker##$var1/frisker_150.pdf##Frisker150PDF##_new##(PDF-506K, 150dpi) Build the Frisker##$var1/frisker_300.pdf##Frisker300PDF##_new##(PDF-1066K, 300dpi) END SPACER## HR##5###FFCC33 SPACER## #TEXT## #Comments/feedback/notes: #END