Re: [time-nuts] Cesium Clock Avialable
Assuming the seals are good, i imagine that a few weeks of ion pump time would put the tube into ‘ready to use’ condition as recall the tube components have been outgassing for the better part of two decades. Content by Scott Typos by Siri On May 19, 2018, at 9:11 AM, djl wrote: Hi Doug I'm visiting just down the coast and could pick up the HP. If not sold I'll take it. Don AJ7LL > On 2018-05-18 22:04, Doug Millar via time-nuts wrote: > 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 -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Dr. Don Latham PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304 ___ 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. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
Hi At least these days, a 5071 comes back from the factory with the same Hazmat labels on it as it ships into their factory with. Bob > On May 19, 2018, at 4:43 PM, Poul-Henning Kamp wrote: > > > In message , Bob kb8tq writes: > >> Cs is classified rightly as a hazardous substance. Transporting and shipping >> hazardous stuff is indeed regulated (as it should be). For various silly >> reasons >> the minute amount of Cs inside a virtually indestructible container in a Cs >> standard falls into the hazardous category. > > The reason for this is actually not very silly. > > Very potent Cs137 sources are used in borehole characterization in > disturbingly high numbers, and they are licensed and tracked by the > relevant national regulatory agency, NRC.gov in the USA. > > The HAZMAT regulations used to be different for Cs137 (nuclear > concerns) and Cs133 (chemical concerns) but smartasses in the oil > industry discovered lower costs if they "couldn't remember the > number". > > I belive HP used to have an exemption for shipping factory new > CS-tubes *from* their factory, but not for shipping new or used > tubes *to* their factory, because customers could not be trusted > to pack according to spec. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
Hi Doug. Did not see my email go by. Would like to have the cs standard. I'm visiting my family in Huntington Beach and can pick it up so no packing. Have cash. Off list at djl at Montana dot com Thanks Don AJ7LL On 2018-05-18 22:04, Doug Millar via time-nuts wrote: 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Dr. Don Latham PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304 ___ 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.
Re: [time-nuts] Cesium Clock Avialable
In message , Bob kb8tq writes: >Cs is classified rightly as a hazardous substance. Transporting and shipping >hazardous stuff is indeed regulated (as it should be). For various silly >reasons >the minute amount of Cs inside a virtually indestructible container in a Cs >standard falls into the hazardous category. The reason for this is actually not very silly. Very potent Cs137 sources are used in borehole characterization in disturbingly high numbers, and they are licensed and tracked by the relevant national regulatory agency, NRC.gov in the USA. The HAZMAT regulations used to be different for Cs137 (nuclear concerns) and Cs133 (chemical concerns) but smartasses in the oil industry discovered lower costs if they "couldn't remember the number". I belive HP used to have an exemption for shipping factory new CS-tubes *from* their factory, but not for shipping new or used tubes *to* their factory, because customers could not be trusted to pack according to spec. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
re rapidly. Dead 004 tubes >>> are pretty much dead. >>> >>> As I recall in the manual there is a way to directly read the true beam >>> current (If you actually have any) right off the tube. >>> So some lucky sole in this tread will finally have a real ticking clock. >>> Congrats and have fun. I think the darn clocks go for as much as Doug is >>> asking. Shipping was about $130 or so from Az to Ma about a year ago >> when I >>> picked up my 2nd 5061. >>> I think this is a bit cheap as it came from a company that most likely >> gets >>> a discount we don't. >>> >>> Regards >>> Paul >>> WB8TSL >>> >>> >>> On Sat, May 19, 2018 at 1:02 PM, Bob kb8tq wrote: >>> >>>> Hi >>>> >>>> >>>> >>>>> On May 19, 2018, at 11:22 AM, Dana Whitlow >>>> 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 >>>> >>>> Simple answer - no. The ones we are playing with came out *long* before >>>> you could do >>>> anything like that in a practical way. Even today I know of no atomic >>>> standard made by >>>> anybody that does something like that. >>>> >>>> >>>>> 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? >>>> >>>> >>>> Rated life on a high performance tube is in the 5 to 7 year range. I >> have >>>> indeed proven that >>>> to be correct with a couple of tubes run on a 24/7/365 basis. A >> “standard >>>> grade” tube should >>>> run for 2 or 3 times that long. A lot depends on exactly which model >> tube >>>> from what era and >>>> who made the specific tube. >>>> >>>> Tubes are not the only thing that dies in a Cs standard. The older ones >> ( >>>> = what we play with) >>>> are mostly full of leaded parts described in manuals and schematics. >> They >>>> may not all be made >>>> anymore, but various substitutes are out there. Also, chassis for Cs >>>> standards with dead >>>> tubes are pretty common. It’s the tubes we are most likely to run out >> of …. >>>> >>>> Of course you *can* get a nice new tube from the factory. Last time I >> did >>>> that the bill was >>>> about $38,000. That included them putting it in. >>>> >>>> Bob >>>> >>>>> >>>>> Dana >>>>> >>>>> >>>>> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 >>>>>> 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] On Behalf Of >> Doug >>>>>> Millar >>>>>>> via time-nuts >>>>>>> Sent: 19 May 2018 05:04 >>>>>>> To: 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 >>&
Re: [time-nuts] Cesium Clock Avialable
;>> >>> As I recall in the manual there is a way to directly read the true beam >>> current (If you actually have any) right off the tube. >>> So some lucky sole in this tread will finally have a real ticking clock. >>> Congrats and have fun. I think the darn clocks go for as much as Doug is >>> asking. Shipping was about $130 or so from Az to Ma about a year ago >> when I >>> picked up my 2nd 5061. >>> I think this is a bit cheap as it came from a company that most likely >> gets >>> a discount we don't. >>> >>> Regards >>> Paul >>> WB8TSL >>> >>> >>> On Sat, May 19, 2018 at 1:02 PM, Bob kb8tq wrote: >>> >>>> Hi >>>> >>>> >>>> >>>>> On May 19, 2018, at 11:22 AM, Dana Whitlow >>>> 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 >>>> >>>> Simple answer - no. The ones we are playing with came out *long* before >>>> you could do >>>> anything like that in a practical way. Even today I know of no atomic >>>> standard made by >>>> anybody that does something like that. >>>> >>>> >>>>> 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? >>>> >>>> >>>> Rated life on a high performance tube is in the 5 to 7 year range. I >> have >>>> indeed proven that >>>> to be correct with a couple of tubes run on a 24/7/365 basis. A >> “standard >>>> grade” tube should >>>> run for 2 or 3 times that long. A lot depends on exactly which model >> tube >>>> from what era and >>>> who made the specific tube. >>>> >>>> Tubes are not the only thing that dies in a Cs standard. The older ones >> ( >>>> = what we play with) >>>> are mostly full of leaded parts described in manuals and schematics. >> They >>>> may not all be made >>>> anymore, but various substitutes are out there. Also, chassis for Cs >>>> standards with dead >>>> tubes are pretty common. It’s the tubes we are most likely to run out >> of …. >>>> >>>> Of course you *can* get a nice new tube from the factory. Last time I >> did >>>> that the bill was >>>> about $38,000. That included them putting it in. >>>> >>>> Bob >>>> >>>>> >>>>> Dana >>>>> >>>>> >>>>> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 >>>>>> 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] On Behalf Of >> Doug >>>>>> Millar >>>>>>> via time-nuts >>>>>>> Sent: 19 May 2018 05:04 >>>>>>> To: 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 >>>>>
Re: [time-nuts] Cesium Clock Avialable
re is a way to directly read the true beam >> > current (If you actually have any) right off the tube. >> > So some lucky sole in this tread will finally have a real ticking clock. >> > Congrats and have fun. I think the darn clocks go for as much as Doug is >> > asking. Shipping was about $130 or so from Az to Ma about a year ago >> when I >> > picked up my 2nd 5061. >> > I think this is a bit cheap as it came from a company that most likely >> gets >> > a discount we don't. >> > >> > Regards >> > Paul >> > WB8TSL >> > >> > >> > On Sat, May 19, 2018 at 1:02 PM, Bob kb8tq wrote: >> > >> >> Hi >> >> >> >> >> >> >> >>> On May 19, 2018, at 11:22 AM, Dana Whitlow >> >> 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 >> >> >> >> Simple answer - no. The ones we are playing with came out *long* before >> >> you could do >> >> anything like that in a practical way. Even today I know of no atomic >> >> standard made by >> >> anybody that does something like that. >> >> >> >> >> >>> 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? >> >> >> >> >> >> Rated life on a high performance tube is in the 5 to 7 year range. I >> have >> >> indeed proven that >> >> to be correct with a couple of tubes run on a 24/7/365 basis. A >> “standard >> >> grade” tube should >> >> run for 2 or 3 times that long. A lot depends on exactly which model >> tube >> >> from what era and >> >> who made the specific tube. >> >> >> >> Tubes are not the only thing that dies in a Cs standard. The older >> ones ( >> >> = what we play with) >> >> are mostly full of leaded parts described in manuals and schematics. >> They >> >> may not all be made >> >> anymore, but various substitutes are out there. Also, chassis for Cs >> >> standards with dead >> >> tubes are pretty common. It’s the tubes we are most likely to run out >> of …. >> >> >> >> Of course you *can* get a nice new tube from the factory. Last time I >> did >> >> that the bill was >> >> about $38,000. That included them putting it in. >> >> >> >> Bob >> >> >> >>> >> >>> Dana >> >>> >> >>> >> >>> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 >> >>>> 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] On Behalf Of >> Doug >> >>>> Millar >> >>>>> via time-nuts >> >>>>> Sent: 19 May 2018 05:04 >> >>>>> To: 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. >> >>>>> Ther
Re: [time-nuts] Cesium Clock Avialable
na Whitlow > >> 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 > >> > >> Simple answer - no. The ones we are playing with came out *long* before > >> you could do > >> anything like that in a practical way. Even today I know of no atomic > >> standard made by > >> anybody that does something like that. > >> > >> > >>> 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? > >> > >> > >> Rated life on a high performance tube is in the 5 to 7 year range. I > have > >> indeed proven that > >> to be correct with a couple of tubes run on a 24/7/365 basis. A > “standard > >> grade” tube should > >> run for 2 or 3 times that long. A lot depends on exactly which model > tube > >> from what era and > >> who made the specific tube. > >> > >> Tubes are not the only thing that dies in a Cs standard. The older ones > ( > >> = what we play with) > >> are mostly full of leaded parts described in manuals and schematics. > They > >> may not all be made > >> anymore, but various substitutes are out there. Also, chassis for Cs > >> standards with dead > >> tubes are pretty common. It’s the tubes we are most likely to run out > of …. > >> > >> Of course you *can* get a nice new tube from the factory. Last time I > did > >> that the bill was > >> about $38,000. That included them putting it in. > >> > >> Bob > >> > >>> > >>> Dana > >>> > >>> > >>> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 > >>>> 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] On Behalf Of > Doug > >>>> Millar > >>>>> via time-nuts > >>>>> Sent: 19 May 2018 05:04 > >>>>> To: 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 -- time-nuts@febo.com > >>>>> To unsubscribe, go to > >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >>>>> and follow the instructions there. > >>>>> > >>>>> > >>>>> - > >>>>> No virus found in this message. > >>>>> Checked by AVG - www.avg.com > >>>>> Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: > >>>> 05/19/18 > >>>>> > >>>>> ___ > >>>>> 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. > >>>> > >>>> ___ > >>>> 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. > >>>> > >>> ___ > >>> 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. > >> > >> ___ > >> 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. > >> > > ___ > > 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. > > ___ > 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. > ___ 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.
Re: [time-nuts] Cesium Clock Avialable
ormance tube is in the 5 to 7 year range. I have >> indeed proven that >> to be correct with a couple of tubes run on a 24/7/365 basis. A “standard >> grade” tube should >> run for 2 or 3 times that long. A lot depends on exactly which model tube >> from what era and >> who made the specific tube. >> >> Tubes are not the only thing that dies in a Cs standard. The older ones ( >> = what we play with) >> are mostly full of leaded parts described in manuals and schematics. They >> may not all be made >> anymore, but various substitutes are out there. Also, chassis for Cs >> standards with dead >> tubes are pretty common. It’s the tubes we are most likely to run out of …. >> >> Of course you *can* get a nice new tube from the factory. Last time I did >> that the bill was >> about $38,000. That included them putting it in. >> >> Bob >> >>> >>> Dana >>> >>> >>> On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 >>>> 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] On Behalf Of Doug >>>> Millar >>>>> via time-nuts >>>>> Sent: 19 May 2018 05:04 >>>>> To: 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 -- time-nuts@febo.com >>>>> To unsubscribe, go to >>>>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>>> and follow the instructions there. >>>>> >>>>> >>>>> - >>>>> No virus found in this message. >>>>> Checked by AVG - www.avg.com >>>>> Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: >>>> 05/19/18 >>>>> >>>>> ___ >>>>> 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. >>>> >>>> ___ >>>> 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. >>>> >>> ___ >>> 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. >> >> ___ >> 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. >> > ___ > 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. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
Bobs Comments are on target. The Cesium can last a long time on the shelf. But (Always a but) other stuff in the tube tends to pollute the tube. This causes the high current when you start the system that may or may not clear up.Some great time-nuts threads on the subject and how to attempt to recover the tube. In my experience after the tubes up and running and in a locked state. The beam current is relative. About 20-40 is good. The issue is there are some settings that can totally fake this reading out like the meter sensitivity. As the current goes down you see more of the noise floor of the system that deteriorates the quality. Funny fact Frankenstein 5060/61 mix has barely originally showed .5 on the beam current. Yet still locks. Today beam current is 0 and its still locks. The tube was deemed dead when it was given to me. In comparing it to another much later 5061 it is indeed locked nicely. The option 004 tubes run hot and consume Cs more rapidly. Dead 004 tubes are pretty much dead. As I recall in the manual there is a way to directly read the true beam current (If you actually have any) right off the tube. So some lucky sole in this tread will finally have a real ticking clock. Congrats and have fun. I think the darn clocks go for as much as Doug is asking. Shipping was about $130 or so from Az to Ma about a year ago when I picked up my 2nd 5061. I think this is a bit cheap as it came from a company that most likely gets a discount we don't. Regards Paul WB8TSL On Sat, May 19, 2018 at 1:02 PM, Bob kb8tq wrote: > Hi > > > > > On May 19, 2018, at 11:22 AM, Dana Whitlow > 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 > > Simple answer - no. The ones we are playing with came out *long* before > you could do > anything like that in a practical way. Even today I know of no atomic > standard made by > anybody that does something like that. > > > > 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? > > > Rated life on a high performance tube is in the 5 to 7 year range. I have > indeed proven that > to be correct with a couple of tubes run on a 24/7/365 basis. A “standard > grade” tube should > run for 2 or 3 times that long. A lot depends on exactly which model tube > from what era and > who made the specific tube. > > Tubes are not the only thing that dies in a Cs standard. The older ones ( > = what we play with) > are mostly full of leaded parts described in manuals and schematics. They > may not all be made > anymore, but various substitutes are out there. Also, chassis for Cs > standards with dead > tubes are pretty common. It’s the tubes we are most likely to run out of …. > > Of course you *can* get a nice new tube from the factory. Last time I did > that the bill was > about $38,000. That included them putting it in. > > Bob > > > > > Dana > > > > > > On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 > >> 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] On Behalf Of Doug > >> Millar > >>> via time-nuts > >>> Sent: 19 May 2018 05:04 > >>> To: 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 >
Re: [time-nuts] Cesium Clock Avialable
Hi > On May 19, 2018, at 11:22 AM, Dana Whitlow 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 Simple answer - no. The ones we are playing with came out *long* before you could do anything like that in a practical way. Even today I know of no atomic standard made by anybody that does something like that. > 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? Rated life on a high performance tube is in the 5 to 7 year range. I have indeed proven that to be correct with a couple of tubes run on a 24/7/365 basis. A “standard grade” tube should run for 2 or 3 times that long. A lot depends on exactly which model tube from what era and who made the specific tube. Tubes are not the only thing that dies in a Cs standard. The older ones ( = what we play with) are mostly full of leaded parts described in manuals and schematics. They may not all be made anymore, but various substitutes are out there. Also, chassis for Cs standards with dead tubes are pretty common. It’s the tubes we are most likely to run out of …. Of course you *can* get a nice new tube from the factory. Last time I did that the bill was about $38,000. That included them putting it in. Bob > > Dana > > > On Sat, May 19, 2018 at 10:01 AM, Bob kb8tq 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 >> 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] On Behalf Of Doug >> Millar >>> via time-nuts >>> Sent: 19 May 2018 05:04 >>> To: 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 -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> - >>> No virus found in this message. >>> Checked by AVG - www.avg.com >>> Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: >> 05/19/18 >>> >>> ___ >>> 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. >> >> ___ >> 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. >> > ___ > 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. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
Hi Doug I'm visiting just down the coast and could pick up the HP. If not sold I'll take it. Don AJ7LL On 2018-05-18 22:04, Doug Millar via time-nuts wrote: 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- Dr. Don Latham PO Box 404, Frenchtown, MT, 59834 VOX: 406-626-4304 ___ 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.
Re: [time-nuts] Cesium Clock Avialable
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 On Behalf Of Pete Lancashire Sent: Saturday, May 19, 2018 11:39 AM To: Discussion of precise time and frequency measurement 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 >
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 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 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 > > 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] On Behalf Of Doug > > Millar > > > via time-nuts > > > Sent: 19 May 2018 05:04 > > > To: 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 -- time-nuts@febo.com > > > To unsubscribe, go to > > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > > > > > - > > > No virus found in this message. > > > Checked by AVG - www.avg.com > > > Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: > > 05/19/18 > > > > > > ___ > > > 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. > > > > ___ > > 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. > > > ___ > 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. > ___ 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.
Re: [time-nuts] Cesium Clock Avialable
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 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 > 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] On Behalf Of Doug > Millar > > via time-nuts > > Sent: 19 May 2018 05:04 > > To: 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 -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > - > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: > 05/19/18 > > > > ___ > > 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. > > ___ > 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. > ___ 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.
Re: [time-nuts] Cesium Clock Avialable
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 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] On Behalf Of Doug Millar > via time-nuts > Sent: 19 May 2018 05:04 > To: 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 -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: 05/19/18 > > ___ > 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. ___ 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.
Re: [time-nuts] Cesium Clock Avialable
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] On Behalf Of Doug Millar via time-nuts Sent: 19 May 2018 05:04 To: 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. - No virus found in this message. Checked by AVG - www.avg.com Version: 2016.0.8048 / Virus Database: 4793/15670 - Release Date: 05/19/18 ___ 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.
Re: [time-nuts] Cesium Clock Avialable
What would you estimate the shipping cost to Arizona (ZIP 85641) ? Thanks, Dick, W1KSZ Sent from Outlook<http://aka.ms/weboutlook> From: time-nuts on behalf of Doug Millar via time-nuts Sent: Friday, May 18, 2018 9:04:17 PM To: 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 -- time-nuts@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@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Cesium Clock Avialable
I dug not sure if the previous email went through correctly. I am interested in your cesium clock. My location is Portland Oregon 97217 On Fri, May 18, 2018, 9:31 PM Doug Millar via time-nuts wrote: > 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 -- time-nuts@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@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
