[time-nuts] Thinking outside the box a super reference

Bob Camp kb8tq at n1k.org
Fri Nov 4 15:26:29 UTC 2016


Hi

You are indeed effectively either doing a startup or contracting with somebody
already in the business. In a lot of ways, contracting this out might be the easier
approach. The trick there will be having enough business to make it attractive 
to them. 

Bob

> On Nov 4, 2016, at 11:21 AM, Scott Stobbe <scott.j.stobbe at gmail.com> wrote:
> 
> You will also share the same challenges as Touchstone semi did, no one
> wanted to stick their neck out to design in a little startup.
> 
> On Thu, Nov 3, 2016 at 7:49 PM, Bob Camp <kb8tq at n1k.org> wrote:
> 
>> Hi
>> 
>> Not many people have had exposure to Rb’s or Cs standards actually being
>> built. That leaves a major gap in who you can call when you run into a
>> problem.
>> 
>> Until you have tried to build one it’s not at all clear just how much
>> “missing information” there
>> is in all those papers. It’s very much like the semiconductor business.
>> Lots of
>> information is published. There are indeed lots of gaps. At some point you
>> must
>> build tooling and get it all working.
>> 
>> Again, we are talking about a device that is at least as good as a 5065
>> and not
>> something that just barely works. If you *could* build something better
>> than a 5065
>> for a thousand or two dollars, it would be on the market today.
>> 
>> Bob
>> 
>>> On Nov 3, 2016, at 6:34 PM, Attila Kinali <attila at kinali.ch> wrote:
>>> 
>>> On Thu, 3 Nov 2016 16:54:24 -0400
>>> Bob Camp <kb8tq at n1k.org> wrote:
>>> 
>>>> If you look at a modern CPU as “just a handful of sand and some stuff”,
>> it seems
>>>> pretty easy to build one in the kitchen after an hour or two of setup.
>> When you dig
>>>> into the nasty details the line costs rapidly spiral off into the
>> stratosphere. Atomic
>>>> standards are not quite as complex, but there still is more than just a
>> little custom
>>>> equipment involved. $1M sounds a bit on the low side of what it might
>> take.
>>> 
>>> 
>>> Not necessarily. There is a large corpus of knowledge available on
>>> how to build vapor cells standards and what is a good idea and what
>>> isn't. Most of it is documented in papers of the PTTI, EFTF and IFCS.
>>> The former two are freely available (for PTTI until 2010, but that
>>> should be good enough). Getting access to those papers behind a
>>> paywall, you only need to know someone with access to a university.
>>> (not for PTTI post 2010 though, ION has quite anal access rules)
>>> 
>>> Additionally, the people in the time and frequeny community are very
>>> open to discussion and exchange of knowledge. You can almost always
>>> just walk up to someone and ask questions with a high chance of getting
>>> not only answers but help in how to proceede.
>>> 
>>> Tapping into this knowhow would avoid the need to try out the whole
>>> solution space and concentrate on the few parts that are unkown or
>>> not well enough understood and optimize those. And by doing so safe
>>> a lot of money.
>>> 
>>>                      Attila Kinali
>>> 
>>> --
>>> Malek's Law:
>>>       Any simple idea will be worded in the most complicated way.
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