[time-nuts] HP5061B Beam Tubes

[paul swed]

I have numbers of pix. Each is 2 MB so need another way to handle it.
You will get a good feel from the pictures what I did. Schematic is paper.
Lots of notes I would have to re-decode. It was Oct 2011.
Regards
Paul
WB8TSL


On Mon, Sep 23, 2013 at 8:14 PM, wb6bnq <wb6bnq at cox.net> wrote:

> Hi Bert,
>
> Any chance of some high resolution photos ?
>
> Bill....WB6BNQ
>
>
>
> EWKehren at aol.com wrote:
>
>  Twelve years ago I did disassemble a regular and a high  performance
>> tube, the only negative effect was I joined time nuts. The guts  still
>> decorate my window sill. The only parts inside that may be temperature
>>  sensitive are some copper wires with a clear coating. Every thing else is
>> metal  or ceramic.
>> Bert Kehren
>>
>>
>> In a message dated 9/23/2013 5:44:22 P.M. Eastern Daylight Time,
>> john at miles.io writes:
>>
>> I've  always wanted to try baking the entire tube to vaporize any
>> accumulations  of Cs metal outside the internal oven.  Is that what you
>>  did,
>> Paul?  If some of the free cesium metal near the detector can be
>>  recondensed
>> at the oven end, or just redistributed uniformly throughout the  tube, it
>> might render a noisy tube usable again.
>>
>> The point at which  cesium vaporizes is 250C / 482F, and that seems like
>> it
>> could be survivable  unless there are thermoplastic structures or
>> insulation
>> sleeves inside the  tube for some reason.  The operation might be tricky,
>> because while  you wouldn't want to heat the tube sufficiently to vaporize
>> all of the  remaining cesium in the internal oven, you would also need to
>> bake the tube  for quite some time to heat its internal structures
>> uniformly,
>> since it's  basically a vacuum bottle.  Outgassing from various internal
>> materials  and structures would also be a concern.  Something to try with
>> a
>> tube  that is otherwise ready for the scrap heap...
>>
>> -- john, KE5FX
>> Miles  Design LLC
>>
>>
>>
>>> -----Original Message-----
>>> From:  time-nuts-bounces at febo.com [mailto:time-nuts-
>>> bounces at febo.com] On  Behalf Of paul swed
>>> Sent: Monday, September 23, 2013 12:52 PM
>>> To: Discussion of precise time and frequency measurement
>>> Subject: Re:  [time-nuts] HP5061B Beam Tubes
>>>
>>> Tom
>>> I added 10 degrees  and used the built in temp sensor in the tube as a
>>> gauge. So its sort  of accurate to say 10 degrees. I remember evaluating
>>>
>>>
>> the
>>
>>
>>> temp  several ways.
>>> I did not return it to original temp as I believed at  the time I was
>>>
>>>
>> baking
>>
>>
>>> out the last few Cs.
>>> What your saying  in the threads very interesting. But don't have time to
>>>
>>>
>> go
>>
>>
>>> back and  adjust or reconnect the old oven controller. I would have to
>>>
>>>
>> look
>>
>>
>>> at  all of that again to see whats needed. I did this about 2 years ago
>>>
>>>
>> its
>>
>>
>>> in the time nuts archive I suspect.
>>> Regards
>>> Paul.
>>>
>>>
>>
>> ______________________________**_________________
>> time-nuts  mailing list -- time-nuts at febo.com
>> To unsubscribe, go to  https://www.febo.com/cgi-bin/**
>> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts>
>> and follow the  instructions there.
>>
>> ______________________________**_________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/**
>> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts>
>> and follow the instructions there.
>>
>>
>>
>
> ______________________________**_________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/**
> mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts>
> and follow the instructions there.
>