--> > I looked at many ways to try and get a wide area, very accurate timing > signal for an amateur radio astronomy project, and a GPS disciplined ultra > stable frequency standard was about the only way to go. $$$ <-- You can buy a GPS timing receiver that will give you a local 1Hz reference that's within 20ns of UTC for less that $100. Check out the Trimble Resolution-T for example. It would be hard to do better than this for the money. Neil -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist