[time-nuts] Rubidium standard

Chuck Harris cfharris at erols.com
Mon Nov 23 22:34:20 UTC 2009


Rubidium crystals??  Do tell!

-Chuck Harris

Marco A. Ferra wrote:
>> I was told by a Technical Support Engineer from Symmetricom Global 
>> Services that
>> "The typical life span is ~10 years for these Rubidium Time Bases".
>>
>> This is in response to my request for information on a Ball/Efratom 
>> PTB-100.
>>
>> Is this a typical life span of a rubidium standard?
> 
> We had a guy from Pendulum Instruments in our Laboratory that stated 
> that the life span of Rubidium crystals are between 10 ~ 12 years, so 
> the information seems to be correct.  I believe that when the rubidium 
> starts to get older, it loses stability and inversely behaves like the 
> quartz (when older, the more stable).
> 
> Kind regards,
> 
>>
>> Do some standards last longer than others?
>>
>> What are the symptoms of a failing rubidium bulb?
>>
>> Thanks
>> 73
>> Glenn
>> WB4UIV
> 
> 
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