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10/03/2003: "Z3801A Stability Experiment"

I just made a nice acquisition off of eBay -- it's a box with 4 independent dividers that will each take a 1, 5, or 10MHz input signal and bring it down to a nice sharp 1pps output. It can also generate a thumbwheel-set LORAN GRI pulse, which could be interesting.

That gave me the excuse to start my long-planned experiment to compare the stability of my two Z3801A GPS-disciplined oscillators. I'm doing a 48 hour run of each against the HP 5065A, and then will do a 48 hour run of each against the other. From that, I can do a "three cornered hat" analysis that will break out the stability of each standard individually.

I've finished the comparison of N8UR-1 vs. 5065A and am one day into N8UR-2 vs. 5065A (I guess I need to name the 5065A -- from now on, it's N8UR-3). I've started a web page to hold the results -- check http://www.febo.com/time-freq/gps/z3801a/stability/index.html. I'll update it with the charts for N8UR-2 and the two units against each other when those runs are complete.