"Why I wonder? Because he can, like the guy making logic circuits and flip flops out=20 out 11mA filament Russian valves (tubes)." There are a lot of us with that "Because I can" quirk. That describes most of my endeavors now days. Derward has me beat on=20 age, I am only 71. Many of my projects see little to no use after I am=20 satisfied with the project. For guys (& Gals!) like me, it is not the=20 destination that I enjoy, it is the trip! --=20 John Ferrell W8CCW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .