> Just wondering what other people have found as far as accuracy > of internal oscillators on the pics Hi Mike, the oscillators are (kind of) OK but they definitely are very much influenced by temperature and Vdd. Your result suggests you have either a fairly stable ambient or one that's averaging well. It's a fact I have to deal with using IntRC PICs that send radio data at different times of the day -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist