>GPS receivers are using different frequency, usually those >are: 13Mhz, 16.368Mhz, 32.736Mhz, 18.414Mhz, 19.2Mhz >However depends how you're choosing the IF and what kind >of VCO you have. No, I don't want to use this as part of a GPS receiver, I want to use it as a frequency standard that uses a GPS receiver to get the stable frequency from the GPS satellites, and adjusts the local standard frequency to exact 10.000MHz. It is possible to get down to 10^-15 or thereabouts using an ordinary GPS receiver to provide a standard output. I want to use the oscillator as the frequency standard. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist