[time-nuts] Rubidium standard

[paul swed]

Glenn,
    I believe thats the case.
I have a number of the small x cel tower rbs.
You can nurse them a bit.
But the failures I have run into are other things.
Like the tuning cap on the lamp exciter getting noisy
Also I have found re-peaking the multiplier chain can help
It definitely stretches the life a bit.
I would bet things like bypass caps fit into the failures also.
10 years is a long time for these itty bitty electrolytic s. No reserve like
the older ones.
Plus they are just fun to play with to try to recover them.
I see date codes like 94-03 on the stuff that I get. So they are long in the
tooth as it is.
Now the old HP5065 1985 still is going strong.
Believe thats because there simply is more of everything. Gas caps... Built
like a tank.
regards


On Thu, Nov 12, 2009 at 12:40 AM, Glenn Little WB4UIV <
glennmaillist at bellsouth.net> 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?
>
> Do some standards last longer than others?
>
> What are the symptoms of a failing rubidium bulb?
>
> Thanks
> 73
> Glenn
> WB4UIV
>
>
>
>
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>
>
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