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] Anybody have suggestions for time related sciencefairprojects?
Hi how about frequency difference /temperature of a oved'ed Xtal oscillator -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bill Hawkins Sent: 11 May 2018 06:40 To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Anybody have suggestions for time related sciencefairprojects? Well, how about the frequency drift between a pendulum, a tuning fork, and a crystal. Atomic standards could be added depending on availability. Bill Hawkins -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal Murray Sent: Thursday, May 10, 2018 11:56 PM To: time-nuts@febo.com Cc: Hal Murray Subject: [time-nuts] Anybody have suggestions for time related science fairprojects? A few months ago, I was a judge for the county level middle school science fair. (I'm not very good at what they wanted, but that's a different problem.) What sort of interesting time related experiments can a middle school geek do? Borrowing serious gear may not be off scale as long as a youngster can run it. - An alternat meaning to the "nut" part of time-nuts: ") https://www.snopes.com/fact-check/schools-removing-analog-clocks/ -- These are my opinions. I hate spam. ___ 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. - No virus found in this message. Checked by AVG - www.avg.com Version: 2016.0.8048 / Virus Database: 4793/15646 - Release Date: 05/11/18 ___ 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] how long dues this rubidium standard last for
Hi all as I am new to time nuts could someone please help with e following questions I have a Racal 9475 and a comment was it is a good entry level rubidium That is not working yet how long dues the rubidium standard last for and how much to replace? I assume rubidium & cesium's are left on 24/7 ? I think I would like a HP 5065 so how long dues this rubidium standard last for ? and how much to replace ? regarding the HP 5065 how much am I going to have to pay for one ? I want to also do the Corby Dawson optical window modification so How much is the new optical window ? I realise the are a lot of questions but any answers would be welcome Regards Paul B ___ 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] Racal 9475 Rubidium
Hi Dan Regarding a photographs of the back of your 9475 as my unit dues not have a heat sing and it is serial number B002 so your offer would be useful Regards Paul B -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dan Rae Sent: 03 May 2018 16:38 To: time-nuts@febo.com Subject: Re: [time-nuts] Racal 9475 Rubidium On 5/3/2018 7:38 AM, Adrian Godwin wrote: > What sort of heatsink does it need ? Do you need the original part or would > a lightly-machined generic module do ? > At the time, at least in the UK, it was a very common extrusion, often used for power supplies etc., and in fact I see two on the back of big Astron supplies under my bench. I had some in my "junk box" that even had the mounting holes in the correct places. If anyone needs it I can take photographs of the back of my 9475 with the heatsink fitted. Dan ___ 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] Adret 4100 compared to the Tracor 527
Hi all Thank you for the information relating to the Racal 9475 Rubidium I will start work on it at the week end Can any one come back with the advantages / disadvantages of the Adret 4100 compared to the Tracor 527 frequency difference multiplier also how much they normally cost Regards Paul B ___ 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] Racal 9475 Rubidium
Hi all new member hear could any of you help with the following information As I have just bought a Racal 9475 Rubidium and it has problems Is there any stock faults ? What is the life of the rubidium standard? Regards Paul ___ 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.
