It's not typically necessary to autobaud on every packet, unless you're running RC or other low precision oscillator and the temperature or VCC changes a lot, and the other system is constructed differently such that the clock speed doesn't track. You could do that, but you don't have to. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .