[time-nuts] Second Units? KS-24361

paul swed paulswedb at gmail.com
Tue Nov 11 23:03:42 EST 2014


I was thinking about snapping a pix. Though it has to be pretty small to
get through time-nuts.
Clearly my units still aging/adjusting a positive EFC rate.
Regards
Paul
WB8TSL

On Tue, Nov 11, 2014 at 9:12 PM, Bob Stewart <bob at evoria.net> wrote:

> Hi Paul,
> I saw the phase of the 10MHz signal dip by about 60ns twice today as
> compared to my homebrew GPSDO.  Given what I know about the design of my
> unit, it's hard to believe it could follow the path the phase difference
> took, but I suppose anything's possible.  Bob posted a graph showing the KS
> moving about +/- 15ns recently.  I would certainly like to know if others
> have seen this big of a phase movement.  It's been on about a week since
> the last power-off to replace REF-1.
>
> Bob - AE6RV
>      From: paul swed <paulswedb at gmail.com>
>  To: Discussion of precise time and frequency measurement <
> time-nuts at febo.com>
>  Sent: Tuesday, November 11, 2014 7:55 PM
>  Subject: Re: [time-nuts] Second Units? KS-24361
>
> Bob
> I will say that I am watching the noise of the pps ti in the z3811 program.
> Granted its been running 30 some hours now. Virtually nothing in time. My
> fingers are crossed it will clean up.
> I do like the unit quite well. Have to thank Bert for even cluing me in.
> So I do agree quite a nice unit.
> Regards
> Paul
> WB8TSL
>
> On Tue, Nov 11, 2014 at 7:42 PM, Bob Camp <kb8tq at n1k.org> wrote:
>
> > Hi
> >
> > Here’s another way to look at the second unit - What would you pay (on an
> > auction site) for the parts? Since there’s a warranty on the box, all
> would
> > be 100% good working parts with a solid guarantee and paid shipping back:
> >
> > Lucent low EMI DC-DC converter “power brick” - $35 + $5 ship
> > MTI 260 OCXO                                                  $35 + $15
> > ship
> > Nice board built up with GPSDO parts                  $  (gotta be at
> > least 20) + ship
> > Metal enclosure                                                        $
> > (ok, it’s not that good, $5)
> > Connectors, buffering, filtering                              $ something
> >
> > Just the two big parts in the box likely would set you back more than the
> > cost of the second unit delivered in the US. If you are headed into a
> GPSDO
> > project, the thing is a steal.
> >
> > Bob
> >
> >
> >
> >
> >
> > > On Nov 10, 2014, at 1:41 AM, F. W. Bray <fwbray at mminternet.com> wrote:
> > >
> > >
> > > Sorry, I intended to say that this question concerns the KS-24361
> units.
> > Forgot to put that in the subject line!
> > >
> > >> I have one complete setup on the way. Any thoughts as to whether it is
> > better to get a second complete set or just go for the unit that has the
> > GPS in it? This would be as a spare or possibly actual use.
> > >>
> > >> Thanks.
> > >>
> > >> Fred
> > >>
> > >> KE6CD
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