>> I just wanted to ask the group if the Thunderbolt would be more >> accurate than the internal reference? I want to think it is but >> my link to the thunderbolt spec sheet is no longer valid.
> Some time ago, I took my T-bolt over to the Metrology and > Standards Lab at the University of Florida and set it up to run > overnight and let it do its full survey process. > In spite of the fact that the antenna was in a rather poor > location it locked up quickly and seemed to run flawlessly. > The monitoring was only intended to look at the frequency accuracy > of the 10 MHz output - other timing characteristics so dear to > Time-Nuts hearts were ignored. > After its overnight warm-up and survey process was done, we found > (over a period of 48 hours) that the 10MHz output was never worse > than 1.0 X E-12 and was generally better than that by a > considerable margin about 90% of the time. > Mike Baker > WA4HFR > Gainesville, FL Mike, thanks for the info. These real-world data points are very valuable. I have some questions: What frequency reference did they use at the university standards lab to measure the T-Bolt frequency? And how did they measure its frequency? How did they do the comparison to your TBolt? If it was a counter, what kind was it? You mentioned the error was better than 1e-12 90% of the time. What was the average error? Thanks, Mike Monett _______________________________________________ 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.
