[time-nuts] cbt cut open, exibit

sebastian stolp sebastianstolp at gmx.net
Sat Aug 20 10:49:10 EDT 2005

hi jim,
you might want to look at the picture on the site here:


this is a cut open cbt as an exibit in the german museum of technology in 
the city of bonn. its a rather small pic on the site, but might give you 
an idea where to cut.

best regards, sebastian

> --- Ursprüngliche Nachricht ---
> Von: Jim Miller <timenuts at jcmco.com>
> An: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Betreff: [time-nuts] HP CBT Cutaway?
> Datum: Fri, 19 Aug 2005 16:12:50 -0400
> Hi,
> Has anyone ever seen a cutaway of an HP 5061 CBT? I recently bought a  
> "Serviceable" 5061A from Gov. Liquidation that turned out to be  
> nothing but an empty, gutted carcass containing only the CBT and the  
> time of day clock option.  To add insult to injury, the CBT's leads  
> had been close-clipped 1/2" away from the tube body.
> In order to make some lemonade from a lemon, I'd like to cut open the  
> CBT outer case to expose the innards as a show-and-tell piece for  
> time-and-freq presentations at the local ham club and high school  
> electronics demonstrations.  Any suggestions on where to make the  
> incisions in the case? Is it worth the trouble? I have a machine shop  
> that can do the cutting.
> Thanks,
> Jim
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