I have to say I have my supply also. Though many of them will need the
special heat treatment to clear the bulb. But heck at $25 I picked up 6 X
cel site RBs. You can play around with them.
Regards
Paul
WB8TSL
On Thu, Nov 15, 2012 at 2:27 PM, Pete Lancashire wrote:
> I'm also using Bob's method o
I'm also using Bob's method of resolving the issue of "Life Time"
-pete
On Thu, Nov 15, 2012 at 7:09 AM, Bob Smither wrote:
> On 11/14/2012 10:56 AM, Bob Smither wrote:
>> Do Rb oscillators wear out? I have found:
>
>
>
> Thanks for all the good information! I am running my FE-5680a 24/7, and
Bob,
Rubidium lamps are purpose designed for particular units.
However The Efratom threaded ones are mostly interchangeable.
I'll see about taking a PIX of a variety of lamps and posting it.
Something along the lines of the Rubidium Cell PIX I took at:
http://www.leapsecond.com/pages/rb-cells/
time-nuts@febo.com
Subject: Re: [time-nuts] Confused about Rubidium oscillators
On 11/14/2012 10:56 AM, Bob Smither wrote:
> Do Rb oscillators wear out? I have found:
Thanks for all the good information! I am running my FE-5680a 24/7, and, as
suggested, have a couple of backups. At my age I
On 11/14/2012 10:56 AM, Bob Smither wrote:
> Do Rb oscillators wear out? I have found:
Thanks for all the good information! I am running my FE-5680a 24/7, and, as
suggested, have a couple of backups. At my age I should be set for life!
One last question: what category of lamps do the Efratom
dnesday, November 14, 2012 6:28 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Confused about Rubidium oscillators
>
> Hi
>
> There are several different basic Rb cell designs. The old "large cell"
> designs had relatively
Bob,
Which category do the FE-5680A's fall into?
Dale
NV8U
-Original Message-
From: Bob Camp
Sent: Wednesday, November 14, 2012 6:28 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Confused about Rubidium oscillators
Hi
There are se
Hi
There are several different basic Rb cell designs. The old "large cell" designs
had relatively little trouble with glass / metal interaction. The early small
cell designs tended to turn the bulbs black over time. Newer small cell designs
seem to have gotten past that problem.
Bob
On Nov 14
I believe Corby came up with the bulb "rejuvenation".
If you tried to get a new bulb for a FRK, they wanted $400 in the late
1990s for them.
Several rubidium's are plentiful and cheap, it may be easier to buy one
from the auction site.
I have a HP5065A, I run it when I need it, and when not
On 11/14/2012 10:26 PM, cdel...@juno.com wrote:
Bob,
Modern Rubidium units like the PRS10 Have a lamp life of over 20 years
(of continuous operation).
Vintage HP 5065A units likewise had a very long lamp lifetime.
All the other common failures are just in the electronics.
The main interest fo
Bob,
Modern Rubidium units like the PRS10 Have a lamp life of over 20 years
(of continuous operation).
Vintage HP 5065A units likewise had a very long lamp lifetime.
All the other common failures are just in the electronics.
The main interest for time nutters is how long will the lamp last in m
s to a Cs beam tube.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob Smither
Sent: Wednesday, November 14, 2012 11:56 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Confused about Rubidium oscil
Hello,
"There are no ?wear-out? or ?use-up? mechanisms in a Datum
Efratom Rubidium oscillator."
(..)
But also:
"Unlike a quartz crystal oscillator which has no clearly-defined "wear out"
period and, if well-designed, can actually improve as time goes on, a Rubidium
reference has a definite lif
From what's been reported here, the mechanism isn't consumption of the
Rb, but rather deposition of material on inside of the bulb, reducing
its intensity, and that can sometimes be reversed by tricks that some
time-nuts have reported -- it's more of a maintenance rather than a
wear-out issue.
Do Rb oscillators wear out? I have found:
"There are no “wear-out” or “use-up” mechanisms in a Datum
Efratom Rubidium oscillator."
-- Datum - Note About Rubidium Oscillators
and
"Atomic Vapor Oscillators have no wear out mechanism."
-- FEI - Precison Oscillator Overview, 2007, p19.
But als
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