Ok.. I need some help. I know nothing of Mic elements, what is the difference between a crystal and ceramic?? I have an old DX-40 which I would like to put a mic to and why not make one? Thanks.......rich -- 72's / 73's........ Rich Rich Wilkerson, WD6FDD, Santee, Ca. NorCal, ARCI, ScQRPions, E.C.R.A. Boatanchors, ARCEC. AMI.