[time-nuts] GPSDO design articles
csteinmetz at yandex.com
Sat Sep 3 16:27:06 EDT 2016
I am pleased to report that Didier has moved these document to the
general population on ko4bb.com. They can be accessed by going to the
"Manuals" page <http://www.ko4bb.com/getsimple/index.php?id=manuals> and
searching for "PTF", or by following the document-specific download links:
> Finally for today, I posted two white papers from PTF, Inc. that discuss
> the basics of GPSDO design. These are the best accessible discussions
> of "how it's done" at the professional level that I'm aware of, and
> (IMO) should be required reading for anyone attempting a DIY GPSDO design.
> Note that some of the ADEV graphs show the use of local oscillators that
> are less stable at short tau than most time-nuts would use, so the
> corresponding crossover frequencies are lower (PLL bandwidths are
> higher) than would be appropriate for a time-nuts grade GPSDO by a
> factor of ~10.
> The file names are:
> (Didier's system will convert the underscore characters to spaces for
> Once again, these are still in quarantine, but will be searchable when
> Didier moves them into the general population (which could take several
> When that happens, "PTF" will be a good search term.
> Best regards,
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