[time-nuts] PLL performance?

[Hal Murray]

attila at kinali.ch said:
> There have been a couple of discussions about doing GPSDOs using only analog
> components in the past. People fare more knowledgable than me have commented
> there on what the challenges would be and how to solve them. So I recommend
> to go through the archives and look for those discussions. They might be a
> little bit hidden, though. 

I think the main problem is how to build a filter with a time constant of 
many seconds.  The better your OCXO the longer the time span you can 
integrate over.  100s of seconds isn't an unreasonable target.

There may be other problems.


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