Jinx wrote... >...sewage meter... Sewage meter??? Have I missed something? How do you measure sewage? >Sometimes it helps being thick. You can spread yourself >out more !! Well, I'm a bit thick myself, and it's good to hear there's an upside to it; but I find being thick causes me to go 'round in viscous circles a lot. BTW, Jinx, I looked around but I couldn't find any elegant solution to your wide-range crystal oscillator problem, especially not one that's cheap, uses logic gates as gain elements, and produces anything close to a square wave output. I think the main difficulty is that any circuit that works well at the higher frequencies is going to have a nasty tendency to encourage low-frequency crystals to oscillate at some overtone. Sometimes life's like that... Dave -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics