[time-nuts] Disciplining Rubidium

Didier Juges didier at cox.net
Wed Apr 23 20:30:03 EDT 2008


Weight and power consumption are the first methods that come to mind :-)

You are hitting the time-nuts nail right on the head. You cannot rank just
two clocks, you need at least three, so that you can compare them 2 by 2 and
determine statistically the performance of each by comparaison to the
others. You cannot do it with just two.

When you have three, and one is clearly not as good as the other two, it
will be harder to determine which one of the two better ones is the best, so
you will be looking for a new one to replace the worst of the three. 

I am sure you can now see where that is going...

Didier KO4BB

> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf Of iovane at inwind.it
> Sent: Wednesday, April 23, 2008 6:51 PM
> To: time-nuts
> Subject: Re: [time-nuts] Disciplining Rubidium
> More precisely, if I had two black boxes, one containing a 
> GPS-Rb-XTAL setup and another containing GPS-XTAL, what 
> measurement would you make from outside the boxes to 
> distinguish from one another?
> Antonio I8IOV

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