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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 -- [email protected] > >>>>>>> To unsubscribe, go to > >>>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>>>> and follow the instructions there. > >>>>>> > >>>>>> _______________________________________________ > >>>>>> time-nuts mailing list -- [email protected] > >>>>>> To unsubscribe, go to > >>>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>>> and follow the instructions there. > >>>>>> > >>>>> _______________________________________________ > >>>>> time-nuts mailing list -- [email protected] > >>>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>> and follow the instructions there. > >>>> > >>>> _______________________________________________ > >>>> time-nuts mailing list -- [email protected] > >>>> To unsubscribe, go to > >>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
