> inaccuracy quite easily. It really is only necessary to have a "binary" > crystal if using a non-programmable hardware divider "chacun a son gout" it probably boils down to. The actual application I was thinking of was for the SX18, which doesn't have a h/w UART, so it's largely irrelevant what crystal you use - the timing is done in s/w anyway. I'm replacing an F628 (for speed reasons) that has a 3.6864MHz crystal for comms Just occured to me as I was shopping around for parts today as I prepare to dip my toe into the SX pond > Besides which - you got insomnia or something, up and communicative > at this time of day (for me) :))) Nah, just waiting for the sound of my own screams to send me to sleep (actually, been cycling across town - exercise before bed = not smart) -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads