[time-nuts] KS-24361 10 Mhz mod interesting document -> older KS boxes

[paul swed]

Unless you have a way to know what they are doing. You won't know if they
are failing. The initial sign is that they wink-out and restart. You will
spot it as your gear going nuts for a bit and then magically locking up.
Also as an approx lamp V in the 2-3V range. Thats really a gross figure I
can't swear thats EOL. But its some place close to that.
As such I installed the Rb winkOmeter on my unit.
Regards
Paul
WB8TSL

On Thu, Nov 20, 2014 at 6:09 PM, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> So far, I have yet to have one of the Rb’s die (of the ones that worked
> when new to me). The magic “lamp voltage” on the Efratom versions clusters
> in two groups. That seems to be related to some sort of production change
> rather than better performance on the (slightly) newer parts.
>
> Bob
>
> > On Nov 20, 2014, at 9:17 AM, paul swed <paulswedb at gmail.com> wrote:
> >
> > On the old telco RBs $25 they all worked, but were down on lamp life. So
> > the first one chosen ran for 3 years and then started blinking out.
> > Replaced it with another. That first one is the one I used the heat gun
> on
> > and is again operable with what appears could be good lamp life.
> > (Reasonable)
> > Regards
> > Paul
> > WB8TSL
> >
> > On Thu, Nov 20, 2014 at 7:00 AM, Bob Camp <kb8tq at n1k.org> wrote:
> >
> >> Hi
> >>
> >> So far, I have not found any of the Rb’s that came out of the KS boxes
> >> with troubles. The ones I got and pulled from boxes myself all have
> worked
> >> fine. The units that got pulled on the other side of an ocean, not so
> much.
> >> There have been a couple of them with issues. What ever they go through
> >> getting shipped overseas and salvaged, it’s not doing the parts any
> good.
> >> That’s one of the reasons getting the newer design KS boxes NIB has a
> lot
> >> of appeal. There are infant mortality reliability issues to deal with on
> >> new stuff. I’d rather have those issues than end of life and corrosion.
> >>
> >> Bob
> >>
> >>
> >>> On Nov 19, 2014, at 9:05 PM, paul swed <paulswedb at gmail.com> wrote:
> >>>
> >>> And I am the happy owner of 4 or 5 of the $25 RBs. Hey they are old but
> >> you
> >>> can recover them with the old heatgun trick. That said glowing things
> >> like
> >>> those do tend to wear out. I could see why they moved away from them.
> >>>
> >>> On Wed, Nov 19, 2014 at 8:15 PM, Bob Camp <kb8tq at n1k.org> wrote:
> >>>
> >>>> Hi
> >>>>
> >>>> Lucent has been putting GPS based Radio Frequency Timing Generators
> >> (RFTG)
> >>>> into cell sites for a long time. They all have the 15 MHz and pps
> >> outputs
> >>>> in common. Lucent also seems to like one paint color and an
> approximate
> >>>> size. For what ever reason (because they can?) the model numbers and
> >>>> internal designs change from time to time. For quite a while they
> really
> >>>> liked the idea of running Rb’s in cell sites. Looking at the latest
> >> batch
> >>>> of parts, that seems to have changed around 1999.
> >>>>
> >>>> Lots of generations of very similar looking boxes with very different
> >>>> stuff inside each of them.
> >>>>
> >>>> Bob
> >>>>
> >>>>> On Nov 19, 2014, at 7:53 PM, paul swed <paulswedb at gmail.com> wrote:
> >>>>>
> >>>>> I just saw the picture of the units front panel and it looked the
> same.
> >>>>> Oh well.
> >>>>> Regards
> >>>>> Paul
> >>>>> WB8TSL
> >>>>>
> >>>>> On Wed, Nov 19, 2014 at 7:08 PM, Bob Camp <kb8tq at n1k.org> wrote:
> >>>>>
> >>>>>> Hi
> >>>>>>
> >>>>>> This is a branch thread that never got it’s title changed to drop
> the
> >>>>>> KS-24361 part of it. More or less it’s “compare the older KS boxes
> to
> >>>> the
> >>>>>> newer ones”.
> >>>>>>
> >>>>>> Bob
> >>>>>>
> >>>>>>> On Nov 19, 2014, at 6:03 PM, Dan Rae <danrae at verizon.net> wrote:
> >>>>>>>
> >>>>>>> On 11/19/2014 2:47 PM, paul swed wrote:
> >>>>>>>> Was doing a search for Lucent RFTGm-II-XO looking for alternates
> to
> >>>> the
> >>>>>>>> $150 solution.
> >>>>>>>> A 10 Mhz mod popped up.
> >>>>>>>>
> >>>>>>>> http://telcodata.us/~myself/Lucent-RFTGm-Modification.pdf
> >>>>>>>>
> >>>>>>>> Looks simple enough and I have not validated anything.
> >>>>>>>> Regards
> >>>>>>>> Paul
> >>>>>>>> WB8TSL
> >>>>>>>>
> >>>>>>> Paul, that has nothing to do with the current ebay offerings that
> >> have
> >>>>>> generated so much traffic recently...
> >>>>>>>
> >>>>>>> Dan
> >>>>>>> _______________________________________________
> >>>>>>> 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
> >>>>>> 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
> >>>> 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
> >>>> 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
> >> 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
> >> 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
> 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
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>