On Oct 7, 2011, at 3:32 PM, "John Miles" <jmi...@pop.net> wrote: > > Intuitively, I don't believe a GPSDO can outperform an HP 5071A-era clock > over periods greater than a few hours. But it may be reasonable to > benchmark 5061A-class standards with a good GPSDO setup. We really need > some more data from trials lasting multiple weeks.
Some test like these are on my list for this winter. I am planning to look at a Z3801A versus a couple of 5061 class units: one with a high stability tube that I think is in very good condition, and another with an FTS replacement tube of probably typical surplus quality. I can also add a TBolt into the mix. I'm hoping to lash up multiple 5334 counters in TIC mode so I can do several comparisons simultaneously. In an early test of the 004 tube vs. Z3801A over a week or so, I saw what looked like a floor in the 8e14 range. John _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
