[time-nuts] another Ebay mixup, 5370

Dr Bruce Griffiths bruce.griffiths at xtra.co.nz
Sun Jun 10 22:07:03 EDT 2007

SAIDJACK at aol.com wrote
> Hi Didier,
> looking at the 10MHz input schematics, there is probably an opportunity to  
> make these 5370B units a lot better. Even the 50MHz and 200MHz multiplier 
> boards  could be done a lot better nowadays, say with Crystal based VCXO's.
> I always like opportunities like this that give better performance in an  
> evening or two worth of experimenting.
> bye,
> Said

A well designed frequency multiplier has a lower equivalent phase noise 
than any digital divider so the phase noise of a VCXO locked to a 10MHz 
reference via a digital divider and a phase locked loop will be worse 
than when a well designed frequency multiplier is employed.


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