[time-nuts] Rubidium Cells for Sale ?!

[jimlux]

On 5/6/19 3:54 PM, Bob kb8tq wrote:
> Hi
> 
> Back a while ago it was in the “over a million dollars” range.  Like anything that
> is designed for space use, the price is meaningless until you sort through what
> kind of paperwork this or that program requires.


Yeah, this one:
Radiation
Hardened to withstand natural and manmade space environments, including 
phase- continuous operation through transient radiation

is a pain.

The vibe is high, but not mindbending they don't say whether it's sine 
or random. But as a comparison the usual cubesat qualification level is 
14grms...


Who was Excelitas originally?  Salem, MA  - is it EG&G?



> 
> Bob
> 
>> On May 6, 2019, at 5:37 PM, William H. Fite <omniryx at gmail.com> wrote:
>>
>> Anyone know the price of the Excelitas device? No, I'm not interested in
>> purchasing one, just curious. I assume it is hair-curling expensive.
>>
>>
>> On Monday, May 6, 2019, Bob kb8tq <kb8tq at n1k.org> wrote:
>>
>>> Hi
>>>
>>> Ummm ….. errrr ….. the Efratom Rb’s use an integrated lamp plus one cell.
>>>
>>> http://www.wriley.com/A%20Modern%20MIL%20Rubidium%
>>> 20Frequency%20Standard.pdf <http://www.wriley.com/A%
>>> 20Modern%20MIL%20Rubidium%20Frequency%20Standard.pdf>
>>>
>>> There still are a lot of people doing the lamp plus two approach. One of
>>> many:
>>>
>>> http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf <
>>> http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf>
>>>
>>> Bob
>>>
>>>> On May 6, 2019, at 3:23 PM, Ed Palmer <ed_palmer at sasktel.net> wrote:
>>>>
>>>>
>>>>
>>>> On 2019-05-06 10:00 AM,  Bob kb8tq <kb8tq at n1k.org>wrote:
>>>>> Hi
>>>>>
>>>>> I?m sure they are good cells. The gotcha is ?which one is it??. A
>>> normal Rb has multiple
>>>>> cells doing different things. You ? umm? errr ? need a set of cells ?.
>>>>
>>>> Why do you think I posed the question "Anybody feeling lucky (or
>>> desperate!)?"?  Don't forget that all(?) newer Rb standards use an
>>> integrated cell so it's a 'set' of one.  Whether that's the case here is
>>> unknown, but not likely given the size of this cell.
>>>>
>>>> The only Russian Rb company I've heard of is Kvarz.  Has anyone seen a
>>> cell from one of their old units?
>>>>
>>>> Ed
>>>>
>>>>
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>>
>>
>> -- 
>> Homo sum humani a me nihil alienum puto.
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