Hi If you look at the TDev plots or a phase plot on these units, they look a lot like a Z3801. They wander 10’s or ns as they do their “thing”. While GPS out of these receivers is good to (at most) 1 ns. That’s the resolution of the sawtooth (if they are using it). That only counts if you are looking at the 1 second to 1 second RMS deltas. The “fall off by tau” rule holds for a few decades past 1 second, but it does eventually fall apart. The GPSDO will follow GPS past a point.
Bob > On Nov 11, 2014, at 8:55 PM, paul swed <paulsw...@gmail.com> wrote: > > Bob > I will say that I am watching the noise of the pps ti in the z3811 program. > Granted its been running 30 some hours now. Virtually nothing in time. My > fingers are crossed it will clean up. > I do like the unit quite well. Have to thank Bert for even cluing me in. > So I do agree quite a nice unit. > Regards > Paul > WB8TSL > > On Tue, Nov 11, 2014 at 7:42 PM, Bob Camp <kb...@n1k.org> wrote: > >> Hi >> >> Here’s another way to look at the second unit - What would you pay (on an >> auction site) for the parts? Since there’s a warranty on the box, all would >> be 100% good working parts with a solid guarantee and paid shipping back: >> >> Lucent low EMI DC-DC converter “power brick” - $35 + $5 ship >> MTI 260 OCXO $35 + $15 >> ship >> Nice board built up with GPSDO parts $ (gotta be at >> least 20) + ship >> Metal enclosure $ >> (ok, it’s not that good, $5) >> Connectors, buffering, filtering $ something >> >> Just the two big parts in the box likely would set you back more than the >> cost of the second unit delivered in the US. If you are headed into a GPSDO >> project, the thing is a steal. >> >> Bob >> >> >> >> >> >>> On Nov 10, 2014, at 1:41 AM, F. W. Bray <fwb...@mminternet.com> wrote: >>> >>> >>> Sorry, I intended to say that this question concerns the KS-24361 units. >> Forgot to put that in the subject line! >>> >>>> I have one complete setup on the way. Any thoughts as to whether it is >> better to get a second complete set or just go for the unit that has the >> GPS in it? This would be as a spare or possibly actual use. >>>> >>>> Thanks. >>>> >>>> Fred >>>> >>>> KE6CD >>>> _______________________________________________ >>>> 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. >>>> >>> _______________________________________________ >>> 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. >> >> _______________________________________________ >> 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. >> > _______________________________________________ > 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. _______________________________________________ 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.