Hi
> On Jul 10, 2019, at 4:26 PM, Hal Murray <hmur...@megapathdsl.net> wrote: > > >> Would someone please expand on what the practical frequency calibration limit >> might be? > > That's not quite a well formed question yet. You need to say something about > the time scale. What are you trying to calibrate? > > Poke around for some ADEV curves. Find one for your device (or similar) and > another for a GPSDO. > > Most devices will be V shaped. The GPSDO curve will go down to the right. > Where do they cross over? How hard do you want to work at tracing this and that back to Paris? Ultimately there is a connection that can be followed back. You then get into the somewhat rhetorical debate of “is it really that time when the official stamps it as such?”. On a more practical basis, most typical GPSDO’s start to struggle in the 40K to 170K second range. A lot of things start to “bleed” into the solution. Just what comes in is always going to be a “that depends” sort of thing. Right now sun spots aren’t a big deal. They will be in a few years ….. Bob > > > -- > These are my opinions. I hate spam. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
