I have asked before, so I apologize in advance. Does anyone know of techniques for detecting 60 Hz power lines (both with current flowing and with zero current) I want to build a PIC based device to provide a warning when near power lines. Gus Calabrese -- Gus Calabrese Lola Montes WFT Electronics 4337 Raleigh Street Denver, CO 80212 303 964-9670......voicemail wft@frii.com http://www.frii.com/~wft EMERGENCY: 791 High Street Estes Park, CO 80517 if no success with wft@frii.com, try .... wft@bigfoot.com then wft@eudoramail.com