Hello all What implications if any exist by having various components (PIC included) within a 13.56MHz RF coil that has been etched on a PCBoard. Is there any difference to having those same components along the outside of the same etched coil. Is the only difference that of tuning or does the sinister black art of RF introduce other more sinister unknowns?? TIA TONY BAIA -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads