[time-nuts] chip scale atomic clock

paul swed paulswedb at gmail.com
Sat Dec 26 18:01:08 UTC 2009


So when do we see them on ebay?? ;-) Like the low power aspect. instead of
20-40 watts or more

On Sat, Dec 26, 2009 at 11:14 AM, Bob Camp <lists at cq.nu> wrote:

> Hi
>
> Not ment as a knock, just a comment that a lot of work is still being done
> on getting short term stability closer to a 100~1000X bigger device.
>
> Bob
>
>
> On Dec 26, 2009, at 10:36 AM, Robert Lutwak wrote:
>
> > I pay pretty close attention to what people in this field are saying, and
> I've never heard anyone say "we'll get to 1e-11 short term stability at 1
> second real soon now."
> >
> > 1e-11 at 1 second is the XPRO spec (and 2X better than LPRO or PRS10).
> There are good (physics) reasons why those units all draw 100X more power
> than a CSAC.
> >
> > CSAC is intended for portable battery-powered operation. Surely your
> basement has the space and wallplug power to support an LPRO. (p.s. don't
> cool the damn thing, heat it).
> >
> > The cats were much happier during the CsIII development (see
> http://home.comcast.net/~rlutwak <http://home.comcast.net/%7Erlutwak>). It
> was bigger and warmer. Any Cat-Nuts out there who can help me find one with
> significantly lower SWAP?
> >
> > -RL
> >
> > At 10:08 AM 12/26/2009, you wrote:
> >> Hi
> >>
> >> 1x10-11 at 1 second,  going down by tau^0.5.
> >>
> >> That makes them candidates for the basement system ....
> >>
> >> Bob
> >>
> >> On Dec 26, 2009, at 9:33 AM, Robert Lutwak wrote:
> >>
> >> > How "good" do you want?
> >> >
> >> >
> >> > At 09:13 AM 12/26/2009, you wrote:
> >> >> Hi
> >> >>
> >> >> They still seem to be at the stage of "we'll get to good short term
> stability at 1 second real soon now".
> >> >>
> >> >> Bob
> >> >>
> >> >>
> >> >> On Dec 26, 2009, at 8:23 AM, Ronald Held wrote:
> >> >>
> >> >> > I read about this a while ago. Has anyone seen anything recent
> about
> >> >> > it, notably desktop or even portable units?
> >> >> >        Ronald
> >> >> >
> >> >> > _______________________________________________
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> >> >> > and follow the instructions there.
> >> >> >
> >> >>
> >> >>
> >> >> _______________________________________________
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> >> >
> >> >
> >> >
> >> > -RL
> >> >
> >> > -----------------------
> >> > Robert Lutwak
> >> > Symmetricom - Technology Realization Center
> >> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com
> >RLutwak at Symmetricom.com (Business)
> >> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu(Personal)
> >> > (978) 232-1461                              (Desk)
> >> > (339) 927-7896                              (Mobile)
> >> > (978) 927-4099                              (Facsimile)
> >> >
> >> >
> >> >
> >> > -RL
> >> >
> >> > -----------------------
> >> > Robert Lutwak
> >> > Symmetricom - Technology Realization Center
> >> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com
> >RLutwak at Symmetricom.com (Business)
> >> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu(Personal)
> >> > (978) 232-1461                              (Desk)
> >> > (339) 927-7896                              (Mobile)
> >> > (978) 927-4099                              (Facsimile)
> >> > _______________________________________________
> >> > time-nuts mailing list -- time-nuts at febo.com
> >> > To unsubscribe, go to
> 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
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> >> and follow the instructions there.
> >
> >
> >
> > -RL
> >
> > -----------------------
> > Robert Lutwak
> > Symmetricom - Technology Realization Center
> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com
> >RLutwak at Symmetricom.com (Business)
> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu(Personal)
> > (978) 232-1461                              (Desk)
> > (339) 927-7896                              (Mobile)
> > (978) 927-4099                              (Facsimile)
> >
> >
> >
> > -RL
> >
> > -----------------------
> > Robert Lutwak
> > Symmetricom - Technology Realization Center
> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com
> >RLutwak at Symmetricom.com (Business)
> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu(Personal)
> > (978) 232-1461                              (Desk)
> > (339) 927-7896                              (Mobile)
> > (978) 927-4099                              (Facsimile)
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at febo.com
> > To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
>
>
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