Re: [time-nuts] Casio Wave Ceptor wrist watch - quick accuracy test

I posted about my G-shock watch on this forum probably about 10 years ago. Go look them up. I found mine superbly accurate and being in Tasmania I cannot connect to any LF service. After a while it started to get a little worse and I found you can take the back off and calibrate it. My

Re: [time-nuts] How good is your ADEV at 10E7 seconds? :)

Approximately 6% of pulsars "glitch" and yes these (typically young) pulsars are poor time standards. The glitching is most likely caused by unpinning of vortices in the superfluid outer core. This causes a momentum transfer from the core to the crust - and a speed-up. The Vela pulsar (freq of ~11

[time-nuts] Tsunami detection via GPS

Some here may find this of interest. http://www2.unb.ca/gge/Resources/gpsworld.february08.pdf Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] Next Aug 21 eclipse and time flow

any anomaly. We, of course, are not in the path of the eclipse, however gravitationally there is still an alignment. Just through the Earth. Jim Palfreyman On 29 May 2017 at 08:17, iovane--- via time-nuts <time-nuts@febo.com> wrote: > On august 21 2017 a solar eclipse will sweep

Re: [time-nuts] calculating stats with gaps in the data

is interested. The main disadvantage of LSP is speed. It performs as O(n^2). This was a huge disadvantage back in the 70s when it was published, but with today's computing power it's not a problem. Unless you have 100 data points, then patience is required. Jim Palfreyman On 26 May 2017 at 07

[time-nuts] Name of integral of timing residual

nd you get "absement" and again you get "abcity" (I only recently discovered these terms). Does the integral of a timing residual have a name, and does the integral of *that* have a name as well? Any thoughts? Jim Palfreyman ___

Re: [time-nuts] How good is the left end of your ADEV curve?

, almost forgot, you'd also need a sampler. Jim Palfreyman On 26 January 2017 at 13:58, Tom Van Baak <t...@leapsecond.com> wrote: > > What can I do at home, to observe such processes? Or is it way beyond > > any imagination to participate in any such experiments? >

Re: [time-nuts] How good is the left end of your ADEV curve?

he sensitivity bands of Advanced LIGO and Advanced VIRGO, but the gravitational waves from Vela are probably too "faint" to be detected. But there is still no harm in trying. Jim Palfreyman On 25 January 2017 at 16:15, Hal Murray <hmur...@megapathdsl.net> wrote: > way way

Re: [time-nuts] Measuring sidereal/solar time? Re: A Leap Second is coming

I don't think we could call it "amateur/semi-pro" but the millisecond pulsar J0437-4715 would be perfect for this. Bright and precise. Only for southern hemisphere people though. :-) Jim Palfreyman On 30 December 2016 at 19:59, Anders Wallin <anders.e.e.wal...@gmail.com&g

[time-nuts] Sapphire oscillators

Anyone got any comments on this? http://www.theleadsouthaustralia.com.au/industries/technology/worlds-most-precise-clock-set-for-commercial-countdown/ Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

[time-nuts] Atomic Watch

Well I think there's a mistake or two here... https://www.inverse.com/article/20497-john-patterson-atomic-ce ___ 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

Re: [time-nuts] Caroliine .. I need to move on

Well I'm intrigued! On 2 October 2016 at 15:53, Ian Stirling wrote: > going to the emergency place > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m >

Re: [time-nuts] Q/noise of Earth as an oscillator

Hi Tom, You said: "you need energy; you need energy loss; you need cycles over which that loss repeatedly occurs." With regard to the earth, where is the first one? Sure it was there at the start when the solar system formed, but where is it now? Jim On 1 August 2016 at 12:16, Tom Van Baak

Re: [time-nuts] Q/noise of Earth as an oscillator

> What about an ADEV/TDEV plot of the pulsar J0437-4715? Very boring. It's a straight line from top left to bottom right. :-) See page 5 of this: http://arxiv.org/pdf/1004.0115.pdf Jim Palfreyman On 29 July 2016 at 17:33, Azelio Boriani <azelio.bori...@gmail.com> wrote: > What a

Re: [time-nuts] Q/noise of Earth as an oscillator

ks. Here's the data for J0437-4715 - one of the most stable pulsars we know about: F0 173.6879458121843 F1 -1.728361E-15 I'm sure the "Q" of Vela would be pretty decent - but I can tell you now, as a time-keeper, she's useless. Jim Palfreyman On 28 July 2016 at

Re: [time-nuts] LSEM (Leap Second Every Month)

leap seconds because it ruins many hours of my observations at the radio telescope - but if this was implemented it would force the software problems to be fixed. Jim Palfreyman On 22 July 2016 at 06:01, Brooke Clarke <bro...@pacific.net> wrote: > Hi Tom: > > I like this ide

Re: [time-nuts] Visiting Greenwich

Speaking of "speaking clocks" - here's two photos of the ones that used to be used in Australia: https://en.wikipedia.org/wiki/Speaking_clock#Australia The top photo with rotating optical disks is a gorgeous piece of machinery. The one below - I have one, and I keep it running. :-) On 6 July

Re: [time-nuts] Visiting Greenwich

Brilliant! Jim Palfreyman On 5 July 2016 at 15:00, Peter Monta <pmo...@gmail.com> wrote: > Hi Dave, > > The Harrisons are indeed at the observatory; also look for a regulator > pendulum clock in the octagon room. I'm not quite sure whether it was > running when I was t

Re: [time-nuts] Maser 0.7 nsec jumps solved

. "Welcome to the jungle, we've got fun and games..." Jim Palfreyman On 3 June 2016 at 15:00, Jim Palfreyman <jim77...@gmail.com> wrote: > Hi All, > > Thanks so much for your input and thoughts. It has really proved helpful > here at the observatory. > > As it tu

Re: [time-nuts] Maser 0.7 nsec jumps solved

ning units are small and cheap (window-type), so we are trying to find the cheapest solution - and if that ends up being some ducting - so be it! Jim Palfreyman On 26 May 2016 at 13:13, Andy <ai.egrps...@gmail.com> wrote: > On Wed, May 25, 2016 at 12:59 PM, Mike Monett <timen...@binsamp.

Re: [time-nuts] Maser 0.7 nsec jumps solved

on with a big "thump". Jim Palfreyman On 22 May 2016 at 21:43, Magnus Danielson <mag...@rubidium.dyndns.org> wrote: > Jim, > > On 05/22/2016 03:58 AM, Jim Palfreyman wrote: > >> Hi all, >> >> Awhile back I posted about some mysterious 0.7 ns jumps i

[time-nuts] Maser 0.7 nsec jumps solved

huge for VLBI and for time-nuts. Jim Palfreyman ___ 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] Unix software to generate nice looking *DEV plots

to start. And it's free. As an aside, fellow time-nuts may be interested in the paper. It's mostly about timing after all. Jim Palfreyman On 17 March 2016 at 21:29, Attila Kinali <att...@kinali.ch> wrote: > Moin, > > I'm looking for some non-GUI software to generate the different

Re: [time-nuts] HP5370B & HP5345B Front-End IC Redesign Effort

Hi Mathew, As someone who just lost their stop channel, I'm extremely interested in this project! Jim Palfreyman On 23 January 2016 at 09:14, Mathew Breton <ab...@outlook.com> wrote: > I was gifted an HP 5370B with the usual problem: front-end problems, > probably due t

Re: [time-nuts] 5370B stop trigger not working

ctually different parts (not > just diff > mounting frames) with crossed up triggers. > > > 7061 (actual start manual lists as stop) is the one that usually fails and > is almost > impossible to find. Took me several years (and the help of another nut > with a parts unit)

Re: [time-nuts] 5370B stop trigger not working

Yes I've been through the process in the service manual with an oscilloscope and the part number of the Schmitt trigger (apologies for the auto-corrected spelling above) is TL072CP. What I'm after is any "gotchas" or hints before I head down this path. Jim Palfreyman On 13 December

Re: [time-nuts] 5370B stop trigger not working

Oops yes! I looked up the wrong item. I meant A3U1 which is 5088-7061 Jim On Sunday, 13 December 2015, Cok wrote: > According to the partlist A4U1 and A4U2 seems to be TL072CP opamps. > >> >> jim77...@gmail.com said: >> >>> I have gone through the troubleshooting

[time-nuts] 5370B stop trigger not working

, removing the front panel, removing board A4, desoldering, and reassembling. Before I dive into this, does anyone have any advice? Most important being the Schmidt trigger - where do I get one? Regards, Jim Palfreyman ___ time-nuts mailing list -- time-nuts

[time-nuts] Hydrogen maser frequency jumps

Hi all, Has anyone here who is familiar with hydrogen masers ever experienced a sudden jump in phase of the 5MHz output? We have found they occur semi-regularly (few times a week) and are trying to find a culprit. The weird thing is that the jump is ~0.7ns and that 1/0.7E-9 is close-ish to

Re: [time-nuts] [volt-nuts] The Art of Electronics

What's been added? This is a brilliant book, but I need to know what the updates are! Jim On 17 April 2015 at 18:12, Poul-Henning Kamp p...@phk.freebsd.dk wrote: In message 20150417074427.ga31...@sol.ermione.com, Andrea Baldoni writes: Hello. In the case someone missed the new,

[time-nuts] 5370B stop port has died

My Stop port has just stopped working. The light is on all the time. I installed the Beaglebone CPU a few months back. Is there a chance it could be a software issue causing it? (I will re-install the original CPU to test - but I was wondering if anyone else had a similar problem.) Jim

Re: [time-nuts] 5370B stop port has died

The last thing I had connected was the 1PPS output from a 5065A rubidium. I had the 5370B on 1 Megohm (I never use the internal 50 Ohm termination because of the risk of damage) so I assumed it would be fine. I've done this heaps of times before too. Jim Palfreyman On 20 October 2014 12:10

Re: [time-nuts] GPS jump

the world so it should be possible to track this down. I can ask people I know too. But can you clarify how much the downward turn is? Is that ps/day, or ns/day, or what. Thanks, /tvb - Original Message - From: Jim Palfreyman jim77...@gmail.com To: Discussion of precise time and frequency

[time-nuts] GPS jump

else who tracks H-masers notice this as well? Is it JPL making corrections? Jim Palfreyman ___ 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] Symmetricom chip scale atomic clock

Out of curiosity, what's the current price for one of these for a time-nut to play with? Regards, Jim Palfreyman On 25 April 2014 11:26, Said Jackson saidj...@aol.com wrote: Hi Magnus, Bob, Thanks much for your kind words. The failure rate is thankfully so low that we are not greatly

Re: [time-nuts] quartz clock/watch question

I've opened up my Casio G-Shock watch, found an electrical point, put an oscilloscope on it and successfully adjusted it. From memory the frequency was something weird, but I still tuned it successfully to within about a second a month. I even think I posted to time-nuts on this... Jim Palfreyman

Re: [time-nuts] GPS to H-Maser comparison

Maybe Australia was mainly hit by the CME? On Sunday, 6 October 2013, Said Jackson wrote: Zero effect visible on the CSAC GPSDO real time plots from our lab: http://www.jackson-labs.com/images/gpsstat.htm Sent From iPhone On Oct 3, 2013, at 20:56, Jim Palfreyman jim77

Re: [time-nuts] GPS to H-Maser comparison

. 2013 à 18:15, Magnus Danielson a écrit : On 10/03/2013 01:33 PM, Jim Palfreyman wrote: Noticed an above average bump in our H-Maser vs GPS graphs - from sites all over Australia. Recent coronal mass ejection or US government shutdown not updating GPS? Considering that GPS Operational

[time-nuts] GPS to H-Maser comparison

Noticed an above average bump in our H-Maser vs GPS graphs - from sites all over Australia. Recent coronal mass ejection or US government shutdown not updating GPS? Anyone else seen it? Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] GPS to H-Maser comparison

Hi all, If you go to this page: http://users.on.net/~cdadsl/ you will see some graphs (all in UT). Notice the larger than usual bump on Oct 02 around 0600 ish. The names are locations all over Australia. Jim Palfreyman On Friday, 4 October 2013, Brian Inglis wrote: On 2013-10-03 05:33, Jim

Re: [time-nuts] OT Prototype Boards

Oh dear. Please go metric US. Please. We will help you. Jim On 27 June 2013 11:33, Hal Murray hmur...@megapathdsl.net wrote: j...@quikus.com said: There WERE (past tense) a number of definitions of the inch, ranging from lines on bars of PtIr to a string of grain kernels. Now there

[time-nuts] Measuring speed of light or reproducing a metre

Hi all, With a 3325B, a 5370B, and other time-nut miscellany, what's the quickest way you can come up with to measure the speed of light OR reproduce the metre. I've got some ideas, but I'd like others' thoughts. Jim ___ time-nuts mailing list --

Re: [time-nuts] Measuring speed of light or reproducing a metre

My actual application is as a quick cool demo showing what I can do with this gear in my garage when people go why? :-) On 24 June 2013 09:22, Magnus Danielson mag...@rubidium.dyndns.org wrote: Hi Jim, On 06/24/2013 01:03 AM, Jim Palfreyman wrote: Hi all, With a 3325B, a 5370B

[time-nuts] +/- TI button on 5370B

to 999.999... ms. It can't seem to make up its mind which to use. Why is this inconsistent? If I flip it to + TI and make sure the leading clock is on Start - all works well. Thoughts? Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] HP5065B !!!

Am I missing something? What actual modifications were done and how? Jim On 1 May 2013 07:30, ewkeh...@aol.com wrote: Attilla No one should or will discourage you from developing a laser pumped Rb. Bruce posted the following link. It addresses some of the issues and for me looking at

Re: [time-nuts] Time nut newbie

Buy a cheap rubidium off ebay and use it to drive a micro-controller and write some clock software. On 1 May 2013 11:57, Rex r...@sonic.net wrote: It doesn't affect the general magnitude conclusions by Bruce, but as long as we are making corrections, my calculator seems to think 60 * 60 * 24

Re: [time-nuts] HP5065B !!!

Hi, Where are the details of the changes and how to do them? Jim On Saturday, 27 April 2013, John Miles wrote: Very nice bit of RD work on Corby's part. Mine is certainly working well after the modification, but I'm just blown away at the performance seen with Tom's unit. Another plot

[time-nuts] Leap second? Yay or nay?

close. Thoughts? Jim Palfreyman ___ 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] Leap second? Yay or nay?

://www.end2partygovernment.com/2012Issues.html Jim Palfreyman wrote: As an astronomer I've been a supporter of the current leap second situation and have not really liked the idea of changing. However, after yesterday I'm thinking of changing my mind. I quite enjoyed having to go through and change all my clocks

Re: [time-nuts] Paywall rant

I'm in astrophysics and arXiv is there just for that. Why don't others do that? Jim On Tuesday, 5 June 2012, Attila Kinali wrote: On Tue, 05 Jun 2012 00:26:56 -0700 Hal Murray hmur...@megapathdsl.net javascript:; wrote: The IEEE is particularly behind the times. I assume it's left over

Re: [time-nuts] NIST Time and Frequency Metrology Seminar

By announcing and bragging we expect a full and detailed report! On Wednesday, 16 May 2012, John Miles wrote: I'll be there as well. Glad to hear so many folks from the list are able to make the journey! -- john -Original Message- From: time-nuts-boun...@febo.com javascript:;

[time-nuts] Oh dear

http://www.ebay.com.au/itm/Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock-/270809581736?pt=LH_DefaultDomain_0hash=item3f0d8248a8 Make sure you read the description to discover what it's being sold for. My chuckle for the day. Jim Palfreyman

[time-nuts] Best reason

So when a member of the general public says: Why do we need really accurate clocks? What is your answer? Personally I explain that accurate clocks enable you to pack a higher data rate into your smart phone. They like that. Any other thoughts? Jim

Re: [time-nuts] Pulsar Source?

Folks, I'm currently writing my thesis on pulsars, but I need to spend time on it rather than here. :-) But since a lot of this discussion is right at the front of my brain, here's a summary. Some pulsars glitch or speed up. The Vela pulsar (PSR J0835-4510) does this (this is the pulsar I've been

Re: [time-nuts] Neutrinos not so fast? (defectove connector)

Maybe the loose connector meant the clock at one end *never* synced with the GPS and just happened to be 60ns fast. Tighten the connecter, clock resyncs, problem solved. Jim On 23 February 2012 09:57, Rick Karlquist rich...@karlquist.com wrote: Maybe they checked the connector by replacing

Re: [time-nuts] GPS fade out, Sat/Sun

Lightsquared doing their final test run... Jim ___ 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] telling time without a clock

As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main problem is that the number of binocular-observable occultations is actually quite rare. When the star appears or disappears behind the bright limb it is

Re: [time-nuts] telling time without a clock

. It is a fun but dark path to go down... Jim On 27 January 2012 11:35, Jim Lux jim...@earthlink.net wrote: On 1/26/12 2:55 PM, Jim Palfreyman wrote: As a reasonably experienced occultation observer (and the very reason I got into being a time-nut - so I could time these observations), the main

[time-nuts] Leap second

Leap second has been announced for July. Jim ___ 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] US New Year countdown - accurate?

Hi folks, Ignoring the travesty of a lyric change on John Lennon's classic song, did anyone check to see if the clock countdown in Times Square was actually accurate? In times gone past countdowns have been notoriously off (worst I saw was a tv personality using his own watch and it was 25

Re: [time-nuts] US New Year countdown - accurate?

A long shot, but was any time-nut actually in the square? On Monday, 2 January 2012, David davidwh...@gmail.com wrote: This sounds like a perfect application for applying antenna wax to coaxial cable. On Sun, 1 Jan 2012 22:33:00 -0700 (GMT-07:00), Richard W. Solomon w1...@earthlink.net

Re: [time-nuts] Slightly OT -- Terminal Strip Covers?

I only know about the ones Don showed. What are the other ones people are talking about? On Thursday, 29 December 2011, Don Latham d...@montana.com wrote: They're here: http://www.allelectronics.com/make-a-store/item/TB-35/35A-12-POSITION-TERMINAL-BLOCK/1.html Don Latham I use european

Re: [time-nuts] Slightly OT -- Terminal Strip Covers?

Ok, yep I've seen those around. Just hate them. Use the ones Don showed. They are great. On Thursday, 29 December 2011, Peter Bell bell.pe...@gmail.com wrote: Since I happened to have one of those MeanWell PSUs sitting here, this is what the terminal strips look like. Regards, Pete On

Re: [time-nuts] New precision watch

Why don't they build a watch that measures the temperature and every time you accurately set it, it adds to a small database of time change v temperature and then adjusts itself internally. Over time it would become quite accurate I would think. Jim On 20 December 2011 11:12, Chuck Harris

Re: [time-nuts] The GPS navigation is the weakest point,

Fascinating. I can picture setting up a bunch of transmitters in the hills to send out strong GPS-like signals to mimic the real thing. I suppose you could control those signals to fool the device it is somewhere else. That bit is very clever - you'd have to adjust the signals taking into account

Re: [time-nuts] gravity controlled pendulumn clock?

Paul, a cricket pitch is 20 m. Sure when the curator draws the lines it is 12cm longer, (and I guarantee s/he uses a metric measure) but when we pace it out for backyard cricket - its 20 m. Also my American friends, all your imperial measurements are DEFINED in terms of metric. eg your inch is

Re: [time-nuts] gravity controlled pendulumn clock?

John, No it isn't. Not even close to the world around. From WP: One fluid ounce is 1⁄16 of a U.S. pint, 1⁄32 of a U.S. quart, and 1⁄128 of a U.S. gallon. The fluid ounce derives its name originally from being the volume of one ounce avoirdupois http://en.wikipedia.org/wiki/Avoirdupoisof water,

Re: [time-nuts] gravity controlled pendulumn clock?

Gentlemen, gentlemen and gentlemen! We are time-nuts. Accuracy is paramount. We are scientists. Please steer clear of pounds, feet, cubic yards and other such rubbish. Scientists speak in metric and so should you. Please. Jim On 13 December 2011 16:24, Don Latham d...@montana.com wrote:

Re: [time-nuts] gravity controlled pendulumn clock?

The beautiful irony in all of this, is that the negative statements about metric and the desire not to change to the metric system comes from the US, yet it was Benjamin Franklin and Thomas Jefferson who took the original idea to France when they were ambassadors. The French ran with it and the US

Re: [time-nuts] synch for pendulum clock....

I acquired an old pendulum regulator from about the 30's-40's and it had an electromagnetic coil and a small magnet attached to the pendulum. Some old electronics passed a constant (but adjustable) current through the coil either pushing or pulling the pendulum slightly to make its amplitude

Re: [time-nuts] looking for data on time code display

Any chance of a photo? On 12 December 2011 04:26, Bob Camp li...@rtty.us wrote: Hi Maybe you could call them up and ask for information on the system they went with….:)… Sounds like a great way to wind up on a no fly list. Bob On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote:

[time-nuts] FTL neutrinos and the best abstract eva!

Folks, Since our neutrino friends are close to our hearts, check the abstract of this paper out: http://arxiv.org/ftp/arxiv/papers/1110/1110.2832.pdf Regards, Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Those pesky Neutrinos again...

Neville, If they haven't thought of that one I'd be very very disappointed. Jim On Monday, 21 November 2011, Neville Michie namic...@gmail.com wrote: Has anyone thought about the fact that verticals converge towards the centre of the earth? The surface distance is greater than the distance

[time-nuts] iPhone keeping better time?

Folks, Is it my imagination or is the iPhone under IOS 5 keeping way better time? I assume it's contacting the mobile towers more often for reading time. Jim Palfreymam ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

[time-nuts] Speedy neutrino puzzle solved

http://nbcu.mo2do.net/s/18488/29?itemId=tag:dvice.com,2011://3.83661fullPageURL=/archives/2011/10/speedy-neutrino.php Comments please! ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Fast than light neutrino

Well that's good Javier - at least we know the timing's good. Who? On Friday, 23 September 2011, Javier Herrero jherr...@hvsistemas.es wrote: Interesting... one co-author, at least, is member of this list :) Regards, Javier El 23/09/2011 06:51, Jim Palfreyman escribió: For those of you

[time-nuts] Fast than light neutrino

For those of you who may be interested, here's the paper. http://arxiv.org/ftp/arxiv/papers/1109/1109.4897.pdf ___ 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

Re: [time-nuts] Pulse width for start signal for HP5370

and that can cause problems too. Jim Palfreyman On 4 September 2011 18:19, Magnus Danielson mag...@rubidium.dyndns.orgwrote: On 04/09/11 09:07, Tom Van Baak wrote: Paul, Do you have an oscilloscope handy? When doing precision time interval measurements it's useful to take a look at what

Re: [time-nuts] The future of UTC

by the way. Rob K -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-bounces@**febo.comtime-nuts-boun...@febo.com] On Behalf Of Jim Palfreyman Sent: 19 July 2011 1:58 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] The future

Re: [time-nuts] The future of UTC

Far out. I've just read so many logical fallacies and government conspiracies I'm embarrassed for this high quality list. Let's inject some facts here. I live at 43 degrees south. At the winter solstice (June 21) the sun rises at 7:41 and sets at 16:43. At the summer solstice (December 21) the

Re: [time-nuts] The future of UTC

Far out. This discussion is so not time-nuts. I'm going to vent here. I'll do my best to be polite. Daylight savings is more beneficial the further from the equator you go. I love it and would never want it to go. As pointed out, this is a local issue. Go lobby your local representative. Metric

[time-nuts] Primary Time Standards

Hi All, I've just realised I don't understand something. Something quite basic. Primary Standards are ones which don't have to be calibrated against others. My understanding is that Caesium and Hydrogen masers are Primary Standards (in our field). Secondary Standards are calibrated against the

Re: [time-nuts] Personal time keeping...

I have posted about this before, but I actually have one of the original six speaking clocks used in Australia. I keep it running and found a way to synchronise it to the gps. There was one in each state and it provided the message over the phone as well as accurate time signals to radio

Re: [time-nuts] Personal time keeping...

? Have Fun, Brooke Clarke http://www.PRC68.com Jim Palfreyman wrote: I have posted about this before, but I actually have one of the original six speaking clocks used in Australia. I keep it running and found a way to synchronise it to the gps. There was one in each state

Re: [time-nuts] Overheard from NASA

Why xray pulsars? Millisecond pulsars have shown themselves to be very accurate - wouldn't an ensemble of those be a better choice? Jim On 10 May 2011 13:45, Jim Lux jim...@earthlink.net wrote: I wasn't intending to cast aspersions... I was more giving an example of somewhere that atomic

Re: [time-nuts] Result of Earth Quake speeds up earth?

No one has commented on my graph. I would have thought that change would easily be detected. Jim On Sunday, March 20, 2011, cook michael michael.c...@sfr.fr wrote: Le 20/03/2011 05:59, Bruce Griffiths a écrit : jimlux wrote: A 10-12m diameter dish is probably close to the minimum

Re: [time-nuts] Result of Earth Quake speeds up earth?

, but the line takes a definite step to the right before continuing on its merry way. At a glance x an y graphs seem to show nothing. Jim Palfreyman ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] Coalition to Save GPS

I find this quite strange. I have three questions: 1) Why would your FCC allow such a thing? 2) For this company to have high bandwidth they're going to need a precision time source at each transmitter. Will it be gps??? :-) 3) Wouldn't the most used GPS devices in the US be smartphones (iPhone

Re: [time-nuts] Coalition to Save GPS

(3) If they get their license rest assured that GPS as we know it will disintegrate, along with every user of it (civilian and military). Rest assured that a LOT of effort is being spent fighting this. Are you sure about this?? Imagine the day they power up their transmitters (I know it

Re: [time-nuts] MiniMac 2816AT

I love the lightweight comment. It has to weigh 20kg! On 7 March 2011 19:19, gandal...@aol.com wrote: It seems to be an L1/L2 dual frequency surveying receiver. Searching for minimac 2816, without the AT, seemed to produce a few more results with the following from 1988 amongst them

[time-nuts] MiniMac 2816AT

or even have a manual of any form? Regards, Jim Palfreyman ___ 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] LCD display connector

segments not working. My conclusion is that the LCD is damaged. (Looks fine though.) May have to buy another unit. :-( Thanks for the interesting thread. Jim Palfreyman On 5 January 2011 13:29, J. L. Trantham jlt...@att.net wrote: Drug store? Not a name I recognize here in FL. Joe

[time-nuts] LCD display connector

. Any hints on how to reattach these? Jim Palfreyman ___ 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] LCD display connector

://store.caig.com/ Generally the LCD is just pressed against the elastomer, so you may need to see that the pressure is sufficient. On 1/3/2011 12:34 PM, Jim Palfreyman wrote: Apologies for being a teensy tiny bit OT. But is relevant on the whole. I have a remote control for an air conditioner whos

Re: [time-nuts] Adjusting accuracy of a Casio G-Shock watch

the watch for a week and note the fractional time error then adjust the frequency so the offset matches the error. Have Fun, Brooke Clarke http://www.PRC68.com Jim Palfreyman wrote: Fellow time-nuts. Over in another part of the internet is a group of people who love their Casio G-Shock

Re: [time-nuts] Frequency counter recommendation

bought such a 5370B, a cool demo is to demonstrate the speed of electricity along a metre or two of cable. Jim Palfreyman On 16 December 2010 16:54, Dave M dgmin...@mediacombb.net wrote: I've seen several posts that mention the 5370 counter. Certainly looks like a capable instrument. I'll

[time-nuts] Adjusting accuracy of a Casio G-Shock watch

Fellow time-nuts. Over in another part of the internet is a group of people who love their Casio G-Shock watches. These digital watches have been around for decades and are built very well. The one I own is an atomic and solar model (i.e. no battery replacement). However being in Tasmania, I

Re: [time-nuts] Adjusting accuracy of a Casio G-Shock watch

seconds, over a year. It's possible that I didn't make the final time zone adjustment when I got back to Minnesota. What was the problem with getting the back off? Bill Hawkins -Original Message- From: Jim Palfreyman Sent: Tuesday, December 14, 2010 10:17 PM To: Discussion

Re: [time-nuts] wwvb signal strength

I receive the Japanese low frequency signal here in Tasmania. I get it on a simple travel clock placed up high on a wooden bookshelf. Still figuring out which times of the year are best. Jim On Sunday, 5 December 2010, Stanley Reynolds stanley_reyno...@yahoo.com wrote: Past week wwvb

[time-nuts] Randomly stumbled on this...

http://www.marketwatch.com/story/frequency-electronics-awarded-contract-for-chip-scale-atomic-clock-2010-11-04?reflink=MW_news_stmp ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

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