> Having never done this before I can't say for sure, but really can't > imagine it being so frequency-critical. There is no need to imagine it one way or the other. The data sheet will tell you how much gain you lose by being 2% off the center frequency. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.