You didn't say anything about the precision you need or the time you were willing to wait to get it. Nor did you mention the equipment you have available, so I'll assume no fancy counters or deviation plotters.
Get two clocks, and do what you have to do to run them on 10 MHz. You could even derive 60 Hz from your sources and run a pair of synchronous motor clocks. Ah, you'll need to run everything from uninterruptable power. After a year, you'll be able to see 3 parts in 10E-9 if you can read one second of difference. It would take 100 years to get down to one part in 10E-11, where the people on this list start getting interested. So you really need to get something that you can read with 100 nanosecond precision, computer connections for two of them, and a program that will process and record the data. Ask yourself why you want to do this. Is it a 'horsepower' race to get the best number? If you want an accuracy of one cycle in 10 MHz, you're already there, if the units are within specs. A simple Lissajous display will show you one part in 10E-8 in ten seconds, as has been mentioned. Bill Hawkins -----Original Message----- From: Randy Sent: Saturday, November 08, 2008 12:17 PM I was wondering if it is worthwhile or even feasible to compare an LPRO Rubidium standard against a Z3801. Since their frequencies are probably going to be extremely close anyway it would seem some special method/equipment would be required for high precision. Suggestions? Randy, W7HR Port Orchard, WA _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
