Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
Certificated Time Nut (Clive Green) certainly a wavemeter should count, so should Lecher Lines, not sure about a calibrated candle or sun dial (maybe if its very nice) but not hour glass / egg timer. Really well aged tuning fork OK but not the bowl of water with a hole in it gismo. If GPS or Rb are to be the lowest these very important steps certainly drop off the bottom. Clive Green Managing Director Quartzlock (UK) Ltd Gothic, Plymouth Road, Totnes, DEVON. TQ9 5LH Tel: - +44 (0) 1803 862 062 Fax: - +44 (0) 1803 867 962 Mob: - +44 (0) 7714 246 062 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] www.quartzlock.com http://www.quartzlock.com PRECISE TIME FREQUENCY FOR TELECOMS, METROLOGY CALIBRATION STANDARDS - DISTRIBUTION - MEASUREMENT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: 05 November 2006 02:00 To: time-nuts@febo.com Subject: time-nuts Digest, Vol 28, Issue 5 Send time-nuts mailing list submissions to time-nuts@febo.com To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than Re: Contents of time-nuts digest... Today's Topics: 1. Re: Re Certified Time Nut Certificate (Jack Hudler) 2. Re: Re Certified Time Nut Certificate (Poul-Henning Kamp) 3. Re: HP 8642a Fan Fixed (Bill Janssen) 4. Re: Re Certified Time Nut Certificate (Bill Janssen) 5. HP-8642A (Colin Bradley) 6. Re: Re Certified Time Nut Certificate (tom) 7. Re: Re Certified Time Nut Certificate (Bill Hawkins) 8. Re: Re Certified Time Nut Certificate, hp 117A, WWVB (Tom Van Baak) 9. Re: Austron 1210D-03 Manual? (John Ackermann N8UR) 10. Re: Re Certified Time Nut Certificate (tom) -- Message: 1 Date: Sat, 4 Nov 2006 12:03:09 -0600 From: Jack Hudler [EMAIL PROTECTED] Subject: Re: [time-nuts] Re Certified Time Nut Certificate To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=us-ascii Scan one at RBG 600 DPI or better; I wee what I can do. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Millar Sent: Saturday, November 04, 2006 9:35 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Re Certified Time Nut Certificate Hi John, Ok. Great idea. We should make up a certificate that looks like an NIST cert. that certifies that if we have a working Cesium or hydrogen maser standard or two or more standards that can be traceable to NIST, you can become a Certified Time Nut. It will look nice hanging over a person's maser. Of course we could have levels as well. Master Nut (Own a maser or 5071) and then levels like primary, secondary and tertiary. The lowest could be having just a GPS source or rubidium. What do you think? Maybe we could come up with something interesting. Anyone want to make them up? Doug At 05:47 AM 11/4/2006, you wrote: Doug Millar said the following on 11/03/2006 09:57 PM: Should we be considered certified time nuts? or just certifiable? Depends on whether you're traceable to NIST... ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts -- Message: 2 Date: Sat, 04 Nov 2006 18:16:48 + From: Poul-Henning Kamp [EMAIL PROTECTED] Subject: Re: [time-nuts] Re Certified Time Nut Certificate To: Discussion of precise time and frequency measurement time-nuts@febo.com Message-ID: [EMAIL PROTECTED] You really need to get Borgmans permission to include the Zits nanosecond strip on the certificate. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. -- Message: 3 Date: Sat, 04 Nov 2006 11:37:10 -0800 From: Bill Janssen [EMAIL PROTECTED] Subject: Re: [time-nuts] HP 8642a Fan Fixed To: Discussion of precise time and frequency measurement time-nuts@febo.com Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=us-ascii; format=flowed John Ackermann N8UR wrote: Doug Millar said the following on 11/03/2006 09:57 PM: Should we be considered certified time nuts? or just certifiable? Depends on whether
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
If you can combine Water with Cesium/Rubidium to make a functional exothermic clock... you would rate a certifiable award in some category. Extra classification points if you can contain it in an hour glass. I'm sure all would agree the resulting display would be quite spectacular if not an explosive demonstration of a technological leap... if you get my meaning. ;) Jack Hudler -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Clive Green Sent: Sunday, November 05, 2006 6:13 AM To: time-nuts@febo.com Subject: Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5 Certificated Time Nut (Clive Green) certainly a wavemeter should count, so should Lecher Lines, not sure about a calibrated candle or sun dial (maybe if its very nice) but not hour glass / egg timer. Really well aged tuning fork OK but not the bowl of water with a hole in it gismo. If GPS or Rb are to be the lowest these very important steps certainly drop off the bottom. Clive Green Managing Director Quartzlock (UK) Ltd Gothic, Plymouth Road, Totnes, DEVON. TQ9 5LH Tel: - +44 (0) 1803 862 062 Fax: - +44 (0) 1803 867 962 Mob: - +44 (0) 7714 246 062 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] www.quartzlock.com http://www.quartzlock.com PRECISE TIME FREQUENCY FOR TELECOMS, METROLOGY CALIBRATION STANDARDS - DISTRIBUTION - MEASUREMENT ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Re Certified Time Nut Certificate
Doug Millar said the following on 11/03/2006 09:57 PM: Should we be considered certified time nuts? or just certifiable? Depends on whether you're traceable to NIST... But some of us know folks who are! Wear one of these (or make your brother-in-law wear one of these, how'd you do that Tom?) and there will be no need for a certificate... http://www.leapsecond.com/pages/atomic-bill/ Tim. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Re Certified Time Nut Certificate
From: [EMAIL PROTECTED] (Tim Shoppa) Subject: Re: [time-nuts] Re Certified Time Nut Certificate Date: Sun, 05 Nov 2006 09:25:12 -0500 Message-ID: [EMAIL PROTECTED] Doug Millar said the following on 11/03/2006 09:57 PM: Should we be considered certified time nuts? or just certifiable? Depends on whether you're traceable to NIST... But some of us know folks who are! Wear one of these (or make your brother-in-law wear one of these, how'd you do that Tom?) and there will be no need for a certificate... Let me quess. A discussion of atomic wrist watches was passed over to Tom and under the influence of some beer Tom and Bill came up with the idea and it felt like a good one even they day after when they took the photos. No? http://www.leapsecond.com/pages/atomic-bill/ I laugthed myself into pieces over that one. ;O) It needs a thad of update thought, neither HP or Agilent sells these wrist- watches anymore, Symmetricom is the manufacture these days. Cheers, Magnus - haven't attempted to redo it. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
As much as I believe there should be a place and appropriate recognition for anyone who has shown dedication to the art of time keeping, regardless of the technology employed, I remind you of the bylaws of the time-nuts group: /quote Time-Nuts/ is a mailing list for amateurs who are interested in precise Time Frequency. Topics include stability of quartz oscillators, measurements of rubidium and cesium atomic clocks, using WWVB, Loran-C, and GPS for long-term comparisons. /quote So maybe these dedicated time keepers who employ technology not listed above should not qualify. I don't see Lecher lines, tuning forks or sun dials there :-) Anyway, how do you compute the Allan Deviation of a sun dial? Didier KO4BB Clive Green wrote: Certificated Time Nut (Clive Green) certainly a wavemeter should count, so should Lecher Lines, not sure about a calibrated candle or sun dial (maybe if its very nice) but not hour glass / egg timer. Really well aged tuning fork OK but not the bowl of water with a hole in it gismo. If GPS or Rb are to be the lowest these very important steps certainly drop off the bottom. Clive Green Managing Director Quartzlock (UK) Ltd Gothic, Plymouth Road, Totnes, DEVON. TQ9 5LH Tel: - +44 (0) 1803 862 062 Fax: - +44 (0) 1803 867 962 Mob: - +44 (0) 7714 246 062 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] www.quartzlock.com http://www.quartzlock.com PRECISE TIME FREQUENCY FOR TELECOMS, METROLOGY CALIBRATION STANDARDS - DISTRIBUTION - MEASUREMENT ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
Didier Juges said the following on 11/05/2006 09:42 AM: Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Re Certified Time Nut Certificate
http://www.leapsecond.com/pages/atomic-bill/ I laugthed myself into pieces over that one. ;O) It needs a thad of update thought, neither HP or Agilent sells these wrist- watches anymore, Symmetricom is the manufacture these days. OK, I fixed the HP link. Thanks. /tvb Cheers, Magnus - haven't attempted to redo it. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
Good point!! Rob K -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges Sent: 05 November 2006 14:42 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5 As much as I believe there should be a place and appropriate recognition for anyone who has shown dedication to the art of time keeping, regardless of the technology employed, I remind you of the bylaws of the time-nuts group: /quote Time-Nuts/ is a mailing list for amateurs who are interested in precise Time Frequency. Topics include stability of quartz oscillators, measurements of rubidium and cesium atomic clocks, using WWVB, Loran-C, and GPS for long-term comparisons. /quote So maybe these dedicated time keepers who employ technology not listed above should not qualify. I don't see Lecher lines, tuning forks or sun dials there :-) Anyway, how do you compute the Allan Deviation of a sun dial? Didier KO4BB Clive Green wrote: Certificated Time Nut (Clive Green) certainly a wavemeter should count, so should Lecher Lines, not sure about a calibrated candle or sun dial (maybe if its very nice) but not hour glass / egg timer. Really well aged tuning fork OK but not the bowl of water with a hole in it gismo. If GPS or Rb are to be the lowest these very important steps certainly drop off the bottom. Clive Green Managing Director Quartzlock (UK) Ltd Gothic, Plymouth Road, Totnes, DEVON. TQ9 5LH Tel: - +44 (0) 1803 862 062 Fax: - +44 (0) 1803 867 962 Mob: - +44 (0) 7714 246 062 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] www.quartzlock.com http://www.quartzlock.com PRECISE TIME FREQUENCY FOR TELECOMS, METROLOGY CALIBRATION STANDARDS - DISTRIBUTION - MEASUREMENT ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Re Certified Time Nut Certificate
Magnus Danielson [EMAIL PROTECTED] wrote: No, my car doesn't have GPS clock or Atomic clock, it just have Fords standard quartz clock, uncalibrated and all. Considering the environment, automotive clocks are remarkably good. (I'm talking about the quartz ones here, although I certainly have a lot of respect for the motor-wound spring ones that were common up through the 1970's and maybe early 80's). The cars I deal with, twice a year we add or subtract an hour for daylight savings time, but other than that the only time I ever set the minutes is when a new car battery and/or alternator goes in, which is like every 5 or 7 years. That is impressively good for a quartz crystal exposed to -40 to 150F temperatures. Are they really TCXO's or just really solidly specced and built? Tim. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
Well, I am sorry to report that you failed this simple test: you need an *abacus* of course :-) (an abacus with statistical functions helps, but I have not seen one, or maybe a programmable abacus...) Didier KO4BB John Ackermann N8UR wrote: Didier Juges said the following on 11/05/2006 09:42 AM: Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John Well, yes, thanks for asking! I did it a year ago. The lab report on earth, including Allan deviation is at: http://www.leapsecond.com/museum/earth/ /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
[time-nuts] philosophical question
Time nuts, Being a recent addition to the list, I'm going to use my one dumb question* card on an epistemological question that's puzzling me. When you come up with a better measuring device (clock, oscillator, etc.), how do you know its better? Since, presumably, the only other tools available to measure it are not as good, how can one tell if it's better (more precise, more accurate, more consistent, etc.) I'm probably just suffering from lack of sleep (from worrying about this...) Any thoughts? Mark *my old Jr. High shop teacher was fond of saying - usually in reference to me - There are no dumb questions; only dumb people. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
[time-nuts] Wavecrest counter
Hi! This weekend I spent a few cycles on making my Wavecrest SIA-3000P more interactively usefull. The P model has no front display and keyboard, but hooking up an VGA monitor at the back gave me a picture. The next thing was to get a mouse working over USB, but I needed a keyboard to press enter in the Win98 driver installation stuff. However, poping the lid up I hooked a normal PS2 keyboard to the keyboard connector of the processor board, hit enter a few times and away I was and had a working USB mouse. However, I want a keyboard too and don't want to fiddle around by letting the keyboard be stuck through the GPIB port or something similarly stupid. So, I just went out and bought myself a USB hub (first time ever) and USB keyboard (first time ever) and sure enought, it was again simply accepting the installation stuff and I had both the USB mouse and USB keyboard operating over the USB hub. Now I have closed up the SIA and later tonight I have to find a nice spot in the lab for it. Anyway, if you guys would run into one of these, now you know what you have to do. There is a few other things I would like to do with it, but that will have to wait. Cheers, Magnus ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Earth: An Oscillator and Frequency Standard
Hi Tom: Thanks for the lab test report on the earth frequency standard. Since there are a number of frequency/time standards that have much better performance I'd like to find a way to directly measure the performance of the earth standard. I've thought about a telescope looking at stars or maybe a photo detector to look at the light from the closest star to the earth frequency standard. Do you have any ideas on how to make these measurements? Have Fun, Brooke Clarke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Tom Van Baak wrote: Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John Well, yes, thanks for asking! I did it a year ago. The lab report on earth, including Allan deviation is at: http://www.leapsecond.com/museum/earth/ /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] philosophical question
Mark, Good question. Here are the rules: 1) If all you have is one clock - then that is the true time, period. 2) If you have two clocks and they always agree, then that just means you need better measuring tools. 3) If you have two clocks and a good comparator, then at least you can tell how much they differ, even if you can't tell which of the two is the better clock. 4) So if you have three clocks and comparators then not only can you tell how they differ amongst themselves, but if one is worse than the others, it will be evident. 5) And in the event that two or more clocks appear to be equally good, then the average of those clocks will be better than any one. Make sense? Follow this thought process and then you realize why UTC is based on an average of atomic clocks at some 50 labs around the world. /tvb http://www.LeapSecond.com Time nuts, Being a recent addition to the list, I'm going to use my one dumb question* card on an epistemological question that's puzzling me. When you come up with a better measuring device (clock, oscillator, etc.), how do you know its better? Since, presumably, the only other tools available to measure it are not as good, how can one tell if it's better (more precise, more accurate, more consistent, etc.) I'm probably just suffering from lack of sleep (from worrying about this...) Any thoughts? Mark *my old Jr. High shop teacher was fond of saying - usually in reference to me - There are no dumb questions; only dumb people. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Earth: An Oscillator and Frequency Standard
Brooke, I proposed a platform driven by a synchronous motor referred to a cesium standard. On this platform is an arrangement to project an attenuated image of the sun onto a mirror that is attached to a galvanometer. Light-beam galvos used this kind of arrangement. The mirror projects the solar image onto a split detector, such that the output of two photocells cancels when the image is centered. The detector drives a servo to keep the image centered using the mirror galvanometer. You'll also need a vertical servo to track the sun through the day. The signal to the galvo is proportional to the deviation of the suns image. Remove the equation of time (a few percent) and you have the deviation from solar time. Do a lot of these and you can apply statistical methods to find the Earth's wobbles. Sounds like great fun, but beyond my capabilities. A rotating platform with no error in angles, for instance. A clear field of view, for another. Regards, Bill Hawkins -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brooke Clarke Sent: Sunday, November 05, 2006 1:29 PM To: Tom Van Baak; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Earth: An Oscillator and Frequency Standard Hi Tom: Thanks for the lab test report on the earth frequency standard. Since there are a number of frequency/time standards that have much better performance I'd like to find a way to directly measure the performance of the earth standard. I've thought about a telescope looking at stars or maybe a photo detector to look at the light from the closest star to the earth frequency standard. Do you have any ideas on how to make these measurements? Have Fun, Brooke Clarke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Tom Van Baak wrote: Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John Well, yes, thanks for asking! I did it a year ago. The lab report on earth, including Allan deviation is at: http://www.leapsecond.com/museum/earth/ /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Earth: An Oscillator and Frequency Standard
Brooke Clarke wrote: Hi Tom: Thanks for the lab test report on the earth frequency standard. Since there are a number of frequency/time standards that have much better performance I'd like to find a way to directly measure the performance of the earth standard. I've thought about a telescope looking at stars or maybe a photo detector to look at the light from the closest star to the earth frequency standard. Do you have any ideas on how to make these measurements? Have Fun, Brooke Clarke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Tom Van Baak wrote: Anyway, how do you compute the Allan Deviation of a sun dial? Oh, God, now someone's going to do it... John Well, yes, thanks for asking! I did it a year ago. The lab report on earth, including Allan deviation is at: http://www.leapsecond.com/museum/earth/ /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts The conventional solution is either a meridian transit instrument or a zenith tube, either of which is much easier and cheaper to construct than an accurately rotating platform. Bruce ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] Re Certified Time Nut Certificate
hey is that where the little red wagon got its name ? he used it to pull the backup battries with it and it had to be red for the live electric on board !!! tom w0kgw \ - Original Message - From: Tim Shoppa [EMAIL PROTECTED] To: time-nuts@febo.com Sent: Sunday, November 05, 2006 8:25 AM Subject: Re: [time-nuts] Re Certified Time Nut Certificate Doug Millar said the following on 11/03/2006 09:57 PM: Should we be considered certified time nuts? or just certifiable? Depends on whether you're traceable to NIST... But some of us know folks who are! Wear one of these (or make your brother-in-law wear one of these, how'd you do that Tom?) and there will be no need for a certificate... http://www.leapsecond.com/pages/atomic-bill/ Tim. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] HP 5060A option 004
I put pictures of it on the web: http://tichu.free.fr/HP_5060A/ As con can see, some controls on the front were removed (scavenged ?), but the oven labels have been painted over: was it part of the option 004 tube upgrade ? Ha, you've got the other one! I bet you got that one on eBay, from a Dutch fellow. He also had a 5061A for sale, which is now in my posession. It's in similar shape: Crystal over missing, front panel meter missing. At least yours still has the C field meter, mine doesn't. The guy selling it to me turned out to be a collegue of mine at Philips NatLab. If you know a good source of spare parts, please keep me posted or I'll be stuck with a source of spare parts myself ;-) Robert. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] time-nuts Digest, Vol 28, Issue 5
In message: [EMAIL PROTECTED] John Ackermann N8UR [EMAIL PROTECTED] writes: : Didier Juges said the following on 11/05/2006 09:42 AM: : : Anyway, how do you compute the Allan Deviation of a sun dial? : : Oh, God, now someone's going to do it... And they are going to tell us how they rigged up these photo sensors and used that to create daily pulses at noon, and measured that against a PPS from some standard and then logged data for a few hundred days. I doubt they can get a tau under an hour for it, however. :-) Warner ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
