Along the same lines, I wonder how long a new tube can last on the shelf? About 16 years ago I bought a 5061A on eBay. When I received it I noticed the tube was replaced and still had 2 years on the warranty. It worked just fine. The only problem was the battery charging circuit. Wanting to make it perfect, I started working on repairing it. Needless to say, it is still apart due to a separation in 2013 and a divorce in 2015. I have not touched it since 2012. For me, at 73 now, stairs are not much fun and my old lab is in the basement, but, I wonder if I did brave to go down there would it be worth playing with it again. Thanks for any observations in this regard. Regards – Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 848-245-9115 -----Original Message----- From: time-nuts <time-nuts-boun...@febo.com> On Behalf Of Pete Lancashire Sent: Saturday, May 19, 2018 11:39 AM To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Cesium Clock Avialable Dana, I would suggest downloading and reading the HP journals that discussed the first clocks there's a lot of information in there about how they operate Etc. On Sat, May 19, 2018, 8:23 AM Dana Whitlow < <mailto:k8yumdoo...@gmail.com> k8yumdoo...@gmail.com> wrote: > Don't Cesium clocks have a beam current integrator of sorts so that > it's possible to pretty accurately assess the remaining life of the > tube? If not, I'm terribly surprised and disappointed. > > Also, beginning with a new tube, roughly how long can one be run until > it reaches exhaustion? Are we speaking months, years, decades, or what? > > Dana > > > On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq < <mailto:kb...@n1k.org> > kb...@n1k.org> wrote: > > > Hi > > > > Unfortunately there really is no way to tell how much Cs is left in > > the tube. You can look at beam current and make a guess. All that > > really will tell you is that the fuel gauge is on empty or at least > > just off of empty. > > > > Bob > > > > > On May 19, 2018, at 2:30 AM, Paul Bicknell > > > < <mailto:p...@bicknells.f2s.com> p...@bicknells.f2s.com> > > wrote: > > > > > > Hi Doug > > > > > > Is it possible to test its operation and > > > can the time left on the cesium be calculated Regards Paul > > > > > > -----Original Message----- > > > From: time-nuts [ <mailto:time-nuts-boun...@febo.com> > > > mailto:time-nuts-boun...@febo.com] On Behalf Of > > > Doug > > Millar > > > via time-nuts > > > Sent: 19 May 2018 05:04 > > > To: <mailto:time-nuts@febo.com> time-nuts@febo.com > > > Subject: [time-nuts] Cesium Clock Avialable > > > > > > Hi, I am willing to part with my HP 5061A cesium standard and manual. > The > > > unit was rebuilt and functioning some years ago and not used since > then. > > > There is usable cesium in the tube and the unit worked. I have not > > tested it > > > recently. It has a Patek-Philippe analogue clock in the front. The > > > unit > > is > > > in great physical condition. Asking $600 plus shipping from Long > Beach, > > CA. > > > 90806 > > > I also have an ESI 242D resistance calibrator and a Julie primary > > resistance > > > standard in an oven. Let me know if you are interested. Very > reasonable. > > > Thanks, Doug K6JEY > > > _______________________________________________ > > > time-nuts mailing list -- <mailto:time-nuts@febo.com> time-nuts@febo.com > > > To unsubscribe, go to > > > <https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > > > > > ----- > > > No virus found in this message. > > > Checked by AVG - <http://www.avg.com> www.avg.com > > > Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: > > 05/19/18 > > > > > > _______________________________________________ > > > time-nuts mailing list -- <mailto:time-nuts@febo.com> time-nuts@febo.com > > > To unsubscribe, go to > > > <https://www.febo.com/cgi-bin/> https://www.febo.com/cgi-bin/ > > mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- <mailto:time-nuts@febo.com> time-nuts@febo.com > > To unsubscribe, go to > > <https://www.febo.com/cgi-bin/> https://www.febo.com/cgi-bin/ > > mailman/listinfo/time-nuts and follow > > the instructions there. > > > _______________________________________________ > time-nuts mailing list -- <mailto:time-nuts@febo.com> time-nuts@febo.com To > unsubscribe, go to > <https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- <mailto:time-nuts@febo.com> time-nuts@febo.com To unsubscribe, go to <https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.