Matt Bennett wrote: > A ground plane tends to make the board radiate less and be less > susceptible to external interference. It does, but that is not much of a issue for one-off or hobby boards. For such boards, the main point of a ground plane is to provide a very low impedence common reference voltage for the other signals. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .