Re: [time-nuts] Self-correcting crystal

2013-11-05 Thread wb6bnq 

Hi Mike,

Far more interesting, at least to the Time-nut community, is the article 
just above the one you reference.


BillWB6BNQ

Mike Naruta AA8K wrote:



An interesting NIST brief:

Perfect Faults: A Self-Correcting Crystal May Unleash the Next 
Generation of Advanced Communications


< 
http://www.nist.gov/public_affairs/tech-beat/tb20131105.cfm#dielectric >


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[time-nuts] Clock block

2013-11-05 Thread Bill Dailey 
Does anyone have any spares?  Or bom with pcb files so I can order and build?

Doc

Sent from my iPad
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[time-nuts] Any EFC glitches on November 3?

2013-11-05 Thread iov...@inwind.it 
Did anybody notice any EFC glitches on Nov 3 (solar eclipse day) 
?Thanks,Antonio I8IOV
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[time-nuts] Self-correcting crystal

2013-11-05 Thread Mike Naruta AA8K 


An interesting NIST brief:

Perfect Faults: A Self-Correcting Crystal May Unleash the Next 
Generation of Advanced Communications


< 
http://www.nist.gov/public_affairs/tech-beat/tb20131105.cfm#dielectric 
>


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Re: [time-nuts] video of CSAC GPSDO

2013-11-05 Thread Jim Lux 

On 11/4/13 6:51 PM, saidj...@aol.com wrote:

Hi John,

well, I think he must have meant a new car back in 1971 :) That would be
about right. It's not quite THAT expensive.


Ford Pinto sold for $1999 in the early 70s.  Not that I want to compare 
a CSAC to a Pinto, but...






Symmetricom seized to exist as an independent company a couple of days ago,
  they were bought out by MicroSemi..

They do make great products, for sure. Please note that I do not think that
  the NIST CSAC effort had much to do with the commercialized Symmetricom
product.  Same funding, but competing groups I think. NIST never took it to
commercial  grade.


We who work at National research labs and Federally Funded Research and 
Development Centers always face the "thou shalt not compete with 
industry" laws and regulations.  Each and every job or project we do, we 
have to prepare an analysis to show why we are uniquely suited to doing 
whatever it is and why the government shouldn't buy it from industry. 
This, in general, is a good thing, but it also does mean that sometimes 
the technologists are a bit separated from the customer experience 
(because developing the customer experience is something you only get 
by, uh, working with customers of a product).


So we get a lot of things to TRL 4 or 5, and it kind of languishes 
there, unless it's something unique (e.g. if you want to communicate to 
deep space probes, there aren't any industry sources with 70 meter 
antennas, cryogenic receivers, and 400kW transmitters).


Ideally, you work with some industry partner(s) who can take it to 
commercial reality.  And, hopefully, you stay in contact with industry, 
who can provide feedback on what is needed in the way of fundamental 
research.


A lot of the development of error correcting codes works this way, for 
instance.  Some government agency or FFRDC does the basic work, and 
comes up with a reference implementation, then the actual commercial 
implementations are done by someone else. Guys like Viterbi did their 
basic work at JPL. Turbo codes were invented at France Telecom.

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Re: [time-nuts] video of CSAC GPSDO

2013-11-05 Thread paul swed 
Very sorry to see the change. For time-nuts each time a consolidation or
company purchase occurs the original data slowly but surely disappears.
Granted the days of complete schematics and such are long gone. It will be
curious at to why Microsemi wants them actually seems like an odd purchase.
Regards
Paul.


On Mon, Nov 4, 2013 at 10:01 PM, John C. Westmoreland, P.E. <
j...@westmorelandengineering.com> wrote:

> Said,
>
> Really - meaning - I knew something was up over at Symmetricon but I didn't
> know what you just told us.
>
> Hmmm, I hope the transition goes smoothly and you are able to keep making
> progress with the folks at Microsemi.
>
> Best Regards,
> John Westmoreland
>
>
>
> On Mon, Nov 4, 2013 at 6:51 PM,  wrote:
>
> > Hi John,
> >
> > well, I think he must have meant a new car back in 1971 :) That would be
> > about right. It's not quite THAT expensive.
> >
> > Symmetricom seized to exist as an independent company a couple of days
> ago,
> >  they were bought out by MicroSemi..
> >
> > They do make great products, for sure. Please note that I do not think
> that
> >  the NIST CSAC effort had much to do with the commercialized Symmetricom
> > product.  Same funding, but competing groups I think. NIST never took it
> to
> > commercial  grade.
> >
> > bye,
> > Said
> >
> >
> >
> >
> >
> > In a message dated 11/4/2013 18:20:24 Pacific Standard Time,
> > j...@westmorelandengineering.com writes:
> >
> > Said,
> >
> > Yes - Ha!  In the video, KF5OBS does say  something like the price of a
> new
> > car.  I have a very wide variance  for what that could be - a Scion xB,
> > Viper, Rolls Royce Bentley...,  Ha!
> >
> > Great video - and thanks for letting us know about it.  I  actually went
> to
> > the NIST chip scale site the other day - very interesting  stuff.  And, I
> > am
> > glad you guys are taking on such
> > a technically  ambitious project.  It would appear Symmetricon is a great
> > company to  work with.
> >
> > Best Regards,
> > John W.
> >
> >
> > On Mon, Nov 4, 2013 at  6:06 PM, Said Jackson  wrote:
> >
> > >  John,
> > >
> > > Too much to post here publicly :)
> > >
> > > About  one tenth of the price of the next higher available Cesium
> > reference
> > >  though, and not much more than some used decades-old functional FTS
> > Cesiums
> > > selling on Ebay. Please call the office for quotes on CSAC  units.
> > >
> > > Thanks,
> > > Said
> > >
> > > On Nov 4, 2013, at  17:27, "John C. Westmoreland, P.E." <
> > >  j...@westmorelandengineering.com> wrote:
> > >
> > > > Said,
> > >  >
> > > > How much do the CSAC's run?
> > > >
> > > >  Thanks,
> > > > John Westmoreland
> > > >
> > > >
> > >  >
> > > > On Mon, Nov 4, 2013 at 5:14 PM,   wrote:
> > > >
> > > >> Hello,
> > > >>
> > > >>  fyi KF5OBS did a  nice video review of the CSAC GPSDO (and Lecroy
> > high
> > > end
> > > >> scope) that's posted on  Youtube  now:
> > > >>
> > > >>
> > > >>
> > >
> >
> >
> http://www.youtube.com/watch?v=CogN630jUSs&feature=c4-overview&list=UU_XdpUc
> > >  >> sSigyf4JrrPtI5eA
> > > >>
> > > >> bye,
> > >  >> Said
> > > >>  ___
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