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

Scott Stobbe scott.j.stobbe at gmail.com
Fri Nov 4 11:21:22 EDT 2016


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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