[time-nuts] [?? Probable Spam] Comparison of two clocks

EWKehren at aol.com EWKehren at aol.com
Thu Sep 8 07:57:02 EDT 2011


Ulrich, 
thanks for the info. Very comprehensive should be translated.
Bert Kehren
 
 
In a message dated 9/8/2011 4:52:10 A.M. Eastern Daylight Time,  
df6jb at ulrich-bangert.de writes:

Ilja,

since I guess you read German I would like to draw  your attention to  my
paper

http://www.ulrich-bangert.de/AMSAT-Journal.pdf

which  will have answers for a lot of questions that you currently seem to
tackle  with.

Best regards
Ulrich

> -----Ursprungliche  Nachricht-----
> Von: time-nuts-bounces at febo.com 
>  [mailto:time-nuts-bounces at febo.com] Im Auftrag von Ilja Gerhardt
>  Gesendet: Donnerstag, 8. September 2011 05:36
> An:  time-nuts at febo.com
> Betreff: [?? Probable Spam] [time-nuts] Comparison  of two clocks
> 
> 
> Hi time nuts -
> 
> I am  new to the list and have a trivial question on the 
> comparison of two  clocks: In principle it might be very easy 
> to simply monitor the  relative phase-shift of two sine 
> outputs of two clocks, e.g. of two  10MHz outputs.
> 
> For this, it would be ideal to have a very  high frequency, 
> such as a phase-locked 1GHz signal. Does anyone have  a 
> reference to a circuitry, which implements a phase-locked 
>  up-converted signal?
> 
> But, I guess there are better ways to  compare two clocks - I 
> recall a setup where two clocks are referenced  to a third, 
> similar frequency signal (which might even have  phase-noise 
> and such) on two mixers. Then the two outcomes are  compared. 
> Does anyone have a good reference/ paper to a comparison of  
> clock-comparison possibilities?
> 
> Best Regards from  the PST
> 
>                Ilja
> 
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