Glenn
I understand that manufactures may state that a Rubidium unit is good for
ten years, but they do not necessarily support this claim with their
warranties, which at best are for three years, and most are one year only.
It seems that ten years of working life is likely, and perhaps this is why
used FRS. are probably better purchased from a ex. military source as they
probably have not been in continuous use, in fact they are often sitting on
a shelf for five or more years before being disposed off.
regards
Roy
----- Original Message -----
From: "paul swed" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Thursday, November 12, 2009 3:33 PM
Subject: Re: [time-nuts] Rubidium standard
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 <
[email protected]> 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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