>And now onto the fun part of the project: syncing a 10MHz
>oscillator to the GPS 1PPS signal.

Oh, you mean like this (uses a PIC too!)
http://www.rt66.com/~shera/index_fs.htm

He has a PDF of the original QST article. I have been going to build one of 
these into a thermos flask to make a temperature stabilised GPS disciplined 
oscillator, for some time. One day a tuit will happen ... ;))) 

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