[time-nuts] cheap 5V OCXO in 14DIP has about 1E-9 drift per day

[ehydra]

I prophet:

Chris Albertson schrieb:
> I asked the question because I might want to build one of there but I
> could not see how they could be table with just an RC filter.  So the
> answer is "they just are".

Mixing generates two frequencies and a DC phase shift response.
If RC filtered you get the lower of both frequencies.


> 
> OK, so they are stable but why would it run at 10+16=26 and not 10.01+15.99=29
> 
> And what happens if I want to build a 10.01 reference clock?  Could I
> do that with a regenerative filter?
> 

Is have a natural tendency to lock to the lowest n/m ratio.


- Henry

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