Neil, Jinx & Spehro, Thanks for the response. I was suspicious that I might have to use a resonator and run it at 10MHz or so. Thanks for the reference links, and I' ll see if I can pin down the reference to ZTX transistors. I've been playing around with this thing for weeks and I think the saturation exposure I've been giving myself is working. I'm actually starting to feel comfortable with what I'm doing. Now I just need to get a few parts and see if I can make some more progress. Again, thanks for the help. Best regards, Tom __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist