[time-nuts] Cesium beam tube on eBay

[Magnus Danielson]

From: "Dave Carlson" <dgcarlson at sprynet.com>
Subject: Re: [time-nuts] Cesium beam tube on eBay
Date: Wed, 7 Sep 2005 19:52:04 -0700
Message-ID: <005f01c5b420$adf9a760$7adb5142 at cos.agilent.com>

> Yes, 05061-6077 is the Standard Performance CBT. can anyone read any part of
> the serial number? It might help to narrow down the age. The last 5 digits
> are actually more important than the first 4 before the "A".

Yes, it is/was on the eBay page (which I still have open in a window):

"Hewlett Packard Cesium Beam Tube. On the large label is has part number 
05061-6077, series 1924A, serial number 02909. On the small label on the end it
has Part number 05081-60020, serial number 1924A02909. I got this from a scrap
yard. The folks there save vacuum tubes for me and when they saw "tube" on this
they pulled it out of the test set. I don't see any cut wires so it looks like
they unhooked it. It is about 15 by 5 1/2 inches. It has some rubbing on the
paint but is in excelent condition."

Now that it isn't for sale any longer it might be of more academic interest, so
that we can learn if encountering a similar situation.

Cheers,
Magnus

> 
> 
> Dave
> 
> ----- Original Message ----- 
> From: "Magnus Danielson" <cfmd at bredband.net>
> To: <time-nuts at febo.com>; <drkirkby at medphys.ucl.ac.uk>
> Sent: September 07, 2005 12:02 PM
> Subject: Re: [time-nuts] Cesium beam tube on eBay
> 
> 
> From: "Dr. David Kirkby" <drkirkby at medphys.ucl.ac.uk>
> Subject: [time-nuts] Cesium beam tube on eBay
> Date: Wed, 07 Sep 2005 14:15:34 +0100
> Message-ID: <431EE7F6.5070104 at medphys.ucl.ac.uk>
> 
> > This might interest someone.
> >
> >
> http://cgi.ebay.com/HP-Cesium-Beam-Tube-Hewlett-Packard-1924A-02909-0581_W0QQitemZ7543746172QQcategoryZ25399QQrdZ1QQcmdZViewItem
> >
> > The description of how it was obtained is interesting.
> >
> > "I got this from a scrap yard. The folks there save vacuum tubes for me
> and when they saw "tube" on
> > this they pulled it out of the test set. I don't see any cut wires so it
> looks like they unhooked it.
> > It is about 15 by 5 1/2 inches. "
> >
> > I'd hate to guess the value of the item they destroyed to pull the "tube"
> for him!!
> 
> Somebody tossed an HP 5061 on the scrap-yard. Look up the value of an HP
> 5061
> in unknown condition and there you are. Chances are the tube is gone.
> 
> On page 6-18 of the HP 5061A service manual you find it listed as the Cesium
> Beam Tube Assembly, reference designation A12 if you care. From the looks of
> it
> this is the standard performance tube.
> 
> HP XXXXX-6YYYYY is parts of HP XXXXX. HP XXXXX-9YYYY is manuals for HP
> XXXXX.
> Usefull rought pointer derived from "On the large label is has part number
> 05061-6077".
> 
> Cheers,
> Magnus
> 
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