John Miles wrote: > As unhappy as you may be to hear it, Mike, you're done upgrading, at least > for now. Thunderbolts are about as good as they get. Yes, some units like > the HP and Jackson Labs clocks can do somewhat better, and with > entirely-different equipment, you might be able to tell. Not with the 49xP > analyzer, though. > > Your 497P is limited by its 1-Hz counter LSD, not the Thunderbolt. 1E-10 > accuracy from the Thunderbolt is 1 Hz at 10 GHz, and that's about what the > Thunderbolt does at tau=1s, even though the spec sheet shows it closer to > 1E-9 at t=1s. > > That means that there is no conceivable benefit to further upgrading the 10 > MHz reference beyond where you already are. I know, I know, that's the > worst news of all. :) > > Focus on giving the Thunderbolt the best signal you can, via antenna > mounting. > > -- john, KE5FX > > And, if anyone out there still need a Thunderbolt (for less than the ebay price), I have a few more OEM units available.
73, geo - n4ua _______________________________________________ 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.
