Re: [time-nuts] Any spare switches for Racal-Dana 1992?

2012-02-22 Thread Stan Searing
The switches I've replaced in my Dana 1990 failed with the rubber cracking around the part that provides the spring. I think the first one that failed was shorted (which caused me to think that the processor was confused, as no other buttons worked until I found the one stuck down). So at least

Re: [time-nuts] DIY Physics Article

2012-02-22 Thread Rob Kimberley
Thanks for the link, interesting site. Cheers Rob K -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Michael Costolo Sent: 22 February 2012 11:23 To: time-nuts@febo.com Subject: [time-nuts] DIY Physics Article Here is a recent DIY

Re: [time-nuts] DIY Physics Article

2012-02-22 Thread Tom Knox
Rather then a simple lock LED I think what would be interesting if possible to place a CCD next to a Rubidium or Cesium cell to view the luminance at the hyperfine transiton. I am sure someone has done this but I have not seen it. Thomas Knox From: robkimber...@btinternet.com To:

Re: [time-nuts] Repair of Racal switches

2012-02-22 Thread Andrea Baldoni
On Wed, Feb 22, 2012 at 08:23:34AM -0500, James Robbins wrote: Hello Andrea, Thanks for your insight into repairing Racal 1992 switches. Could I ask for more detail about which 6x6mm tactile PCB switches you actually used? Also, any more detail about what part of the switch needed tape?

Re: [time-nuts] ebay warning

2012-02-22 Thread Bob Camp
Hi I've often wondered if there are actually more than two people selling all of the FE's being auctioned. There's not much of a way to tell. I've had orders from various sellers come in combined for shipping over the years. I've had an interesting time with one order from Nichegeek. It took a

Re: [time-nuts] ebay warning

2012-02-22 Thread Chris Albertson
On Wed, Feb 22, 2012 at 9:38 AM, Bob Camp li...@rtty.us wrote: Hi I've often wondered if there are actually more than two people selling all of the FE's being auctioned. There's not much of a way to tell. The only way I can figure is to look at the location they ship from. If the photos and

[time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread Attila Kinali
On Wed, 22 Feb 2012 09:14:34 -0700 Tom Knox act...@hotmail.com wrote: Rather then a simple lock LED I think what would be interesting if possible to place a CCD next to a Rubidium or Cesium cell to view the luminance at the hyperfine transiton. I am sure someone has done this but I have not

Re: [time-nuts] ebay warning

2012-02-22 Thread Scott Newell
At 12:12 PM 2/22/2012, Chris Albertson wrote: The only way I can figure is to look at the location they ship from. My last package from nichegeek has a UPS label from Sain Store, Dong Guan Sunrain e-commerce center, building 7 Songke Yuan in Dongguan. -- newell N5TNL

Re: [time-nuts] ebay warning

2012-02-22 Thread Bob Camp
Hi I have had orders combined by sellers who listed different cities as their locations... Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Albertson Sent: Wednesday, February 22, 2012 1:13 PM To: Discussion of precise time

Re: [time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread paul swed
Hmm in interesting prospect. However its unclear to me as to the benefit of trying this. I do know what gets lost. Its not just a dimming of the light 1-2% as stated its also the modulation on the light beam. I think 286 Hz thats critical to locking the system. So the ccd is very capable of

Re: [time-nuts] ebay warning

2012-02-22 Thread Collins, Graham
It might even be simpler than that. Same pictures, same location, same business; different ebay stores for each sales rep - paid on commission or by the piece. Perhaps the next time I buy something from overseas I will ask. Sometimes there is a bit of struggle with language but for the most

Re: [time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread Chris Albertson
The trend with Rb clocks is to try and make then smaller and cheaper. If all you need to do is detect the amount of light a one-pixel sensor is enough. If you divide the sensor into multiple pixels you just get more noise because fewer photons fall on each pixel. So a photo-transisor is ideal

Re: [time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread Tom Knox
I was thinking you could view it through fiber Thomas Knox Date: Wed, 22 Feb 2012 19:19:57 +0100 From: att...@kinali.ch To: time-nuts@febo.com Subject: [time-nuts] CCD lock detection (was: DIY Physics Article) On Wed, 22 Feb 2012 09:14:34 -0700 Tom Knox act...@hotmail.com wrote:

Re: [time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread Attila Kinali
On Wed, 22 Feb 2012 10:57:01 -0800 Chris Albertson albertson.ch...@gmail.com wrote: I think the next generation of Rb physics packages will use a laser as the light source and have the laser, Rb cell and detector all in one glass envelope. I've seen one like this that is just tiny. But as I

Re: [time-nuts] Spectracom 8170 - SWCC clock

2012-02-22 Thread John Ackermann N8UR
The 8170 isn't smart enough to calculate the leapsecond immediately. Instead, it uses its error correction routine which takes about 4 minutes after the event to realize that it is one second off, then updates the time to match. Details quite far down the page at

Re: [time-nuts] CCD lock detection (was: DIY Physics Article)

2012-02-22 Thread Tom Knox
That is interesting, I spoke with a friend at NIST and they were still using discrete components on the prototypes developed as part of the CSAC for symmetricom. Coherent population must have been how they made a very labor intensive prototype affordable. My thought on a CCD were directed more

[time-nuts] MINOS Status on Measuring Neutrino Velocity

2012-02-22 Thread Marvin Marshak
The MINOS Collaboration has made progress in its effort to use the Fermilab to Soudan MN neutrino beam to investigate the effect reported by the OPERA Collaboration of neutrinos travelling faster than the speed of light. The current MINOS methodology has two parts: (1) to retrospectively

[time-nuts] A man with one used rubidium standard knows what 10MHz is, more than one, not so much...

2012-02-22 Thread Don Barr
Hi, (sorry to Tvb for stealing a good subject line) I'm just getting into clocks and oscillators, so please excuse any ignorance. I like probably many new list watchers saw Dave Jones of EEVBlog fame with his used FE-5680A and thought - geez I didn't realize those were so cheap, I'd like an

[time-nuts] 5061's on ebay

2012-02-22 Thread Bob Bownes
There are 3 5061's listed on ebay at the moment. Anyone know anything about them? ___ 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] Disciplined HP 5071A Cesium Oscillator (Option)

2012-02-22 Thread Brooke Clarke
Hi: While learning more about the HP 5071A Cs standard came across this description of an option that uses GPS to discipline the 5071A. Does anyone have any experience using this option? http://www.symmetricom.com/media/files/support/ttm/product-manual/man-xl-option-hp5071-cesium.pdf -- Have

Re: [time-nuts] A man with one used rubidium standard knows what 10MHz is, more than one, not so much...

2012-02-22 Thread Chris Albertson
On Wed, Feb 22, 2012 at 12:15 PM, Don Barr don.b...@gmail.com wrote: Hi, (sorry to Tvb for stealing a good subject line) I'm just getting into clocks and oscillators, so please excuse any ignorance.  I like probably many new list watchers saw Dave Jones of EEVBlog fame with his used

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

2012-02-22 Thread Marco IK1ODO
From http://news.sciencemag.org/scienceinsider/2012/02/breaking-news-error-undoes-faster.html?ref=hp : BREAKING NEWS: Error Undoes Faster-Than-Light Neutrino Results ... It appears that the faster-than-light neutrino results, announced last September by the OPERA collaboration in Italy, was

Re: [time-nuts] MINOS Status on Measuring Neutrino Velocity

2012-02-22 Thread Tom Van Baak (lab)
Marvin , Sounds like you're making great progress on a nanosecond timing system. Question: what are you doing with the Novatel data? Is it used to error correct later on or are you using it to steer in near real time? Answer: on the 5071A serial port; I issue a SYST:PRINT? command every 5

Re: [time-nuts] A man with one used rubidium standard knows what 10MHz is, more than one, not so much...

2012-02-22 Thread Azelio Boriani
Welcome aboard, as already pointed out here, just follow and you will learn. Of course you are supposed to search and read about whatever catches your attention while reading here. At times we provide URLs for a learn more action. You can start reading the Thunderbolt manual to learn, for example,

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread Tom Knox
The same seller also had some 5061B's and FTS 4065A's as well, all were untested or in various states of disrepair. I was tempted on a few the had missing parts not related to the Tube. Did anyone purchase any of these? Thomas Knox Date: Wed, 22 Feb 2012 15:17:42 -0500 From:

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

2012-02-22 Thread Azelio Boriani
It depends on the meaning of bad connection... was it not correctly seated in the connector and so distant from the optical receiver? We don't know... hope someone can tell or the experiment be repeated. On Wed, Feb 22, 2012 at 9:41 PM, Marco IK1ODO ik1...@spin-it.com wrote: From

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

2012-02-22 Thread Tom Van Baak (lab)
Could be on the electrical side of the adapter, not the optical side. It's not impossible to get 60 ns of phase or trigger error with RF connectors. /tvb (iPhone4) On Feb 22, 2012, at 12:41 PM, Marco IK1ODO ik1...@spin-it.com wrote: Well, timenuts friends, how may a fiberoptic bad connection

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

2012-02-22 Thread Azelio Boriani
Yes, so it can help knowing what kind of adapter is being used. On Wed, Feb 22, 2012 at 10:32 PM, Tom Van Baak (lab) t...@leapsecond.comwrote: Could be on the electrical side of the adapter, not the optical side. It's not impossible to get 60 ns of phase or trigger error with RF connectors.

Re: [time-nuts] MINOS Status on Measuring Neutrino Velocity

2012-02-22 Thread Rick Karlquist
Marvin Marshak wrote: We have just started operating the HP5071A cesium clocks in the last few days and are interested in suggestions for optimal operation and monitoring of these units. The HP5071As can be controlled and read out via a serial connection, and the device has many

[time-nuts] CSAC and CPT (was: CCD lock detection)

2012-02-22 Thread Attila Kinali
On Wed, 22 Feb 2012 13:01:53 -0700 Tom Knox act...@hotmail.com wrote: That is interesting, I spoke with a friend at NIST and they were still using discrete components on the prototypes developed as part of the CSAC for symmetricom. Coherent population must have been how they made a very labor

[time-nuts] Happy Birthday, Heinrich

2012-02-22 Thread Steve
Did anyone else notice Google's salute to Mr. Hertz today? Steve ___ 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] A man with one used rubidium standard knows what 10MHz is, more than one, not so much...

2012-02-22 Thread Bob Camp
Hi Simple answers: 1) Your GPSDO is more accurate than your Rb 2) Your Rb is more stable for short periods of time than your GPSDO 3) Now you need more stuff... Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Barr Sent:

Re: [time-nuts] Happy Birthday, Heinrich

2012-02-22 Thread paul swed
Actually I did sort of notice it but really thought it was spam On Wed, Feb 22, 2012 at 5:00 PM, Steve steve-kr...@cox.net wrote: Did anyone else notice Google's salute to Mr. Hertz today? Steve ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] MINOS Status on Measuring Neutrino Velocity

2012-02-22 Thread Bob Camp
Hi We routinely get asked to check the 5071A. We look at the lights and messages. We hook up a couple counters and a couple of GPSDO's. We look at it for a day. It's always doing what it's supposed to do.. Bob -Original Message- From: time-nuts-boun...@febo.com

Re: [time-nuts] Happy Birthday, Heinrich

2012-02-22 Thread Azelio Boriani
Neither an electrical field, nor a magnetic field will go anywhere by themselves. Maxwell discovered that an electromagnetic wave exists when the changing magnetic field causes a changing electric field (and vice versa) and a wave cannot exist unless it is moving. Hertz proved the existence of

Re: [time-nuts] A man with one used rubidium standard knows what 10MHz is, more than one, not so much...

2012-02-22 Thread Azelio Boriani
Yes, the you need more stuff is the most dangerous step. Soon you will need a time interval counter and you'll start to hunt for an SR620. On Wed, Feb 22, 2012 at 11:03 PM, Bob Camp li...@rtty.us wrote: Hi Simple answers: 1) Your GPSDO is more accurate than your Rb 2) Your Rb is more

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

2012-02-22 Thread Poul-Henning Kamp
In message 9a458dba-3875-43b2-8383-5ca2f86be...@leapsecond.com, Tom Van Baak (lab) writes: Could be on the electrical side of the adapter, not the optical side. It's not impossible to get 60 ns of phase or trigger error with RF connectors. I don't buy that explanation. It's very hard to get 60

[time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Achim Vollhardt
Fellow Time-Nuts, I am trying to run LH on an Alix 3D3 single-board PC: http://www.pcengines.ch/alix3d3.htm Being only a 500 MHz Geode CPU, there is not much power to work with. Still, running Debian Linux with Wine allowed me to make LH work.. BUT: A single second tick takes about 3-4

[time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Mark Sims
That sort of behavior is usually traceable to USB serial port driver issues. I have run the program just fine on a 90 MHz Fujitsu Milan laptop with passive matrix LCD display. - BUT: A single second tick takes about 3-4 seconds to show up..

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Azelio Boriani
What about writing an active temperature controller that runs under native Linux? On Wed, Feb 22, 2012 at 11:26 PM, Achim Vollhardt avoll...@physik.uzh.chwrote: Fellow Time-Nuts, I am trying to run LH on an Alix 3D3 single-board PC: http://www.pcengines.ch/alix3d3.htm Being only a 500 MHz

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

2012-02-22 Thread Rick Karlquist
Maybe they checked the connector by replacing the whole fiber optic cable with a new one, and while doing that had the oh sh.. moment of realizing the length of the old one was 20 meters different than it was supposed to be. I think this sort of thing has happened to all of us with significant

Re: [time-nuts] Using digital broadcast TV for timing?

2012-02-22 Thread Azelio Boriani
For a history on the color subcarrier you can try: http://www.videointerchange.com/pal_secam_conversions.htm#3.579545 Color Subcarrier Explained Here in Italy, before the digital switchover, our national broadcast company used to sync the PAL color subcarrier to a Cs reference and my company sold

[time-nuts] Neutrinos not so fast?

2012-02-22 Thread Brad Dye
The Great American Philosopher George Wallace (racist former governor of Alabama) supposedly said, If those university professors are so smart why can't they park their bicycles in a straight line? Those OPERA Collaboration scientists should hire my ex-wife. She could help them out a lot. Her

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread John Miles
Are you running the v3 beta? I normally run the program 24/7 on a 300 MHz laptop here, acting as both a server for two Thunderbolts and a client. There were some improvements to CPU utilization in the current beta, and its UI response should be essentially instantaneous. -- john -Original

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Chris Albertson
On Wed, Feb 22, 2012 at 2:26 PM, Achim Vollhardt avoll...@physik.uzh.ch wrote: Fellow Time-Nuts, I am trying to run LH on an Alix 3D3 single-board PC: http://www.pcengines.ch/alix3d3.htm Being only a 500 MHz Geode CPU, there is not much power to work with. Still, running Debian Linux with

[time-nuts] Neutrinos faster than light update

2012-02-22 Thread Didier Juges
http://science.slashdot.org/story/11/09/22/1841217/cern-experiment-indicates-faster-than-light-neutrinos?sdsrc=rel Looks like they found the problem! Didier KO4BB ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Charles P. Steinmetz
Achim wrote: Being only a 500 MHz Geode CPU ... A single second tick takes about 3-4 seconds to show up ... and user interaction is painful at best I run two copies of LH, plus two copies of a Symmetricom monitoring program, simultaneously under Windows XP Pro on an old Dell with a 233 MHz

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread John Miles
Being only a 500 MHz Geode CPU, there is not much power to work with. Still, running Debian Linux with Wine allowed me to make LH work.. Wine may not be the best platform for a somewhat-nonstandard app like LH. Suggest buying a cheap laptop running Win2K at a hamfest for $50, and moving on

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

2012-02-22 Thread Jim Palfreyman
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] Lady Heather on low power CPU/Linux?

2012-02-22 Thread lists
http://www.raspberrypi.org/ I recall that this is the week they start the volume sales of the Raspberry Pi. Perhaps a suitable controller for LH. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

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

2012-02-22 Thread Chris Albertson
The explanation is that the connector was loose, by 20 meters. Hard to believe the signal can jump a 20 meter air gap but apparently so. -- Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

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

2012-02-22 Thread Tom Van Baak (lab)
Examples of GPSDO, rise time, impedance and trigger level: http://www.leapsecond.com/pages/gpsdo-rise/ /tvb (iPhone4) On Feb 22, 2012, at 2:26 PM, Poul-Henning Kamp p...@phk.freebsd.dk wrote: In message 9a458dba-3875-43b2-8383-5ca2f86be...@leapsecond.com, Tom Van Baak (lab) writes:

Re: [time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread John Ackermann N8UR
FWIW, I'm running an Atom D510 motherboard with an 8 port serial card. I'm using Windows 7 and VNC for remote access (the machine runs headless). I am regularly running LH v3 beta, TimeLab (reading PPS data from a TIC), TAC32, and GPSCon each on its own serial port simultaneously without any

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

2012-02-22 Thread Poul-Henning Kamp
In message b81e52be-e1b5-430e-bdb0-5e54d9728...@leapsecond.com, Tom Van Baak (lab) writes: Examples of GPSDO, rise time, impedance and trigger level: ... But no examples of *fiber* connector being involved. I simply don't buy the story that tightening the connector makes a consistent 60

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

2012-02-22 Thread Tom Knox
I think we are thinking to much. In the real world any press is good press, and careers have been made on less, nearly everyone has heard of Cold Fusion, I bet you could still find investors. Thomas Knox (and his weak sense of humor) From: t...@leapsecond.com Date: Wed, 22 Feb 2012

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

2012-02-22 Thread iov...@inwind.it
I read that the news came from sources familiar with the experiment. Is there any official press release? Or only rumors? Antonio I8IOV ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

[time-nuts] Article in Metro (free London newspaper) about jamming GPS

2012-02-22 Thread Dr. David Kirkby
On the train this morning I picked up a copy of the Metro (there are usually numerous copies on any train, as its free and does not take long to read). There was an article about financial institutions being concerned about the time of their clocks being purposely altered by GPS manipulation

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

2012-02-22 Thread Azelio Boriani
Indeed cold fusion is here again... in Italy... google Rossi-Focardi, if interested. Yes, I'm actually struggling finding something about this news flash... On Thu, Feb 23, 2012 at 1:35 AM, iov...@inwind.it iov...@inwind.it wrote: I read that the news came from sources familiar with the

Re: [time-nuts] MINOS Status on Measuring Neutrino Velocity

2012-02-22 Thread Bill Hawkins
Hi, Marvin Congratulations on receiving the funding to keep the experiment alive and to get the right equipment. I've thought of our conversation in early November many times. Is it coincidence that your posting arrives on the same day that a 60 nS error was found in the OPERA experiment? Bill

Re: [time-nuts] Neutrinos faster than light update

2012-02-22 Thread Bill Hawkins
Ah, Didier, that link is to a thread started in September, 2011. Do I have to sort through the 1000+ comments to find something recent? Bill Hawkins -Original Message- From: Didier Juges Sent: Wednesday, February 22, 2012 5:20 PM

[time-nuts] Lady Heather on low power CPU/Linux?

2012-02-22 Thread Mark Sims
The roots of Lady Heather lie in a program written in the mid 1980's for controlling a Magellan GPS board (a multiplexed single channel receiver - Bruce has it now). That program ran under DOS. The code is pretty much straight ANSI C. I modified it to work with the Tbolt and added the

Re: [time-nuts] Neutrinos faster than light update

2012-02-22 Thread shalimr9
I saw this just before leaving home and I must admit I posted it before reading it... But by now everyone knows what the problem was! Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -Original Message- From: Bill Hawkins b...@iaxs.net Sender:

Re: [time-nuts] Neutrinos faster than light update

2012-02-22 Thread Azelio Boriani
Maybe I at last found something: http://www.nature.com/news/flaws-found-in-faster-than-light-neutrino-measurement-1.10099 On Thu, Feb 23, 2012 at 1:53 AM, shali...@gmail.com wrote: I saw this just before leaving home and I must admit I posted it before reading it... But by now everyone

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

2012-02-22 Thread Magnus Danielson
On 02/22/2012 11:26 PM, Poul-Henning Kamp wrote: In message9a458dba-3875-43b2-8383-5ca2f86be...@leapsecond.com, Tom Van Baak (lab) writes: Could be on the electrical side of the adapter, not the optical side. It's not impossible to get 60 ns of phase or trigger error with RF connectors. I

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

2012-02-22 Thread Azelio Boriani
Try this: http://www.nature.com/news/flaws-found-in-faster-than-light-neutrino-measurement-1.10099 On Thu, Feb 23, 2012 at 2:10 AM, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 02/22/2012 11:26 PM, Poul-Henning Kamp wrote: In

Re: [time-nuts] Neutrinos faster than light update

2012-02-22 Thread Rick Thomas
Try this one: http://news.sciencemag.org/scienceinsider/2012/02/breaking-news-error-undoes-faster.html Rick On 02/22/12 19:42, Bill Hawkins wrote: Ah, Didier, that link is to a thread started in September, 2011. Do I have to sort through the 1000+ comments to find something recent?

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

2012-02-22 Thread Magnus Danielson
On 02/23/2012 02:14 AM, Azelio Boriani wrote: Try this: http://www.nature.com/news/flaws-found-in-faster-than-light-neutrino-measurement-1.10099 Still unverified rumours level. Best article so far thought. Cheers, Magnus ___ time-nuts mailing list

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

2012-02-22 Thread Tom Knox
Italy has rewritten the laws of Physics many time throughout history. And I am sure as our understanding increases the Laws will be rewritten many times in the future. But sadly I do not believe this is one of those times. I googled Rossi-Focardi and at least their device looks to have some

Re: [time-nuts] Article in Metro (free London newspaper) about jamming GPS

2012-02-22 Thread Tom Knox
An interesting related paper called UTC Time Transfer for High Frequency Trading Using IS-95 CDMA Base Station Transmissions and IEEE-1588 Precision Time Protocol http://www.endruntechnologies.com/pdf/PTTI2010_WhitePaper.pdf This is the ultimate in legal insider trading machines built

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

2012-02-22 Thread Tom Holmes
Well said regarding the willingness to discuss the science in public, Magnus. Too often we get the media wanting to hang someone for a mistake rather than help the process of understanding. The folks at OPERA should be commended for being open about what is going on, even if no one is ever

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread Dave Welch
Hi all. I PURCHASED THE FTS UNITS AND ONE OF THE HP5061a. Havent had time to look at them but one of the fts powers up but i dont have any docs to figure out what os wrong..it says ion current is 0. Should this be that low?? On Feb 22, 2012 3:21 PM, Tom Knox act...@hotmail.com wrote: The same

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread J. L. Trantham
I purchased a 5061A with all parts installed and with the FTS tube. The 5061B with the FTS tube was listed later and sold. The unit seems to operate with good Beam I, good 2nd Harmonic, and almost zero Ion Pump I but it will not 'lock'. I have not had a chance to look into it yet but I suspect

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread paul swed
Interested On Wed, Feb 22, 2012 at 10:15 PM, J. L. Trantham jlt...@att.net wrote: I purchased a 5061A with all parts installed and with the FTS tube. The 5061B with the FTS tube was listed later and sold. The unit seems to operate with good Beam I, good 2nd Harmonic, and almost zero Ion

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread J. L. Trantham
I'll do it. I work full time and this is my hobby. So, it may be a while before I get into it though. Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Wednesday, February 22, 2012 9:22 PM To: Discussion of precise

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

2012-02-22 Thread ed breya
Tightening up a connector may make a few pSec difference, in terms of absolute delay length, but it could have a very large effect if it caused enough reflection - then the entire time-length of the cable, or some multiple of it, would come into play. Ed

Re: [time-nuts] Article in Metro (free London newspaper) about jamming GPS

2012-02-22 Thread Jim Lux
On 2/22/12 4:38 PM, Dr. David Kirkby wrote: On the train this morning I picked up a copy of the Metro (there are usually numerous copies on any train, as its free and does not take long to read). There was an article about financial institutions being concerned about the time of their clocks

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

2012-02-22 Thread Jim Lux
On 2/22/12 2:26 PM, Poul-Henning Kamp wrote: In message9a458dba-3875-43b2-8383-5ca2f86be...@leapsecond.com, Tom Van Baak (lab) writes: Could be on the electrical side of the adapter, not the optical side. It's not impossible to get 60 ns of phase or trigger error with RF connectors. I

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

2012-02-22 Thread brent evers
Why would this (60ns error, and connector issue) have not shown up in the time transfers and validations done by the labs cited? Brent On Wed, Feb 22, 2012 at 11:03 PM, Jim Lux jim...@earthlink.net wrote: On 2/22/12 2:26 PM, Poul-Henning Kamp wrote: In

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread Tom Knox
It sounds like you hit a home run Joe. If the tube is good the rest should be easy. There are quite a few clean clocks with only a bad tube. Thomas Knox From: jlt...@att.net To: time-nuts@febo.com Date: Wed, 22 Feb 2012 21:15:59 -0600 Subject: Re: [time-nuts] 5061's on ebay I

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread Tom Knox
Hi Dave; I have a Datum 4065C manual on disc somewhere if you cannot find a manual on line. Thomas Knox 1-303-554-0307 Date: Wed, 22 Feb 2012 21:09:23 -0600 From: lasersurp...@gmail.com To: time-nuts@febo.com Subject: Re: [time-nuts] 5061's on ebay Hi all. I PURCHASED THE FTS UNITS

Re: [time-nuts] 5061's on ebay

2012-02-22 Thread J. L. Trantham
I think so. But time will tell. I also have some units with bad tubes and this looks promising. Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Knox Sent: Wednesday, February 22, 2012 10:20 PM To: time-nuts@febo.com Subject:

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

2012-02-22 Thread Marco IK1ODO -2
At 01:35 23-02-12, you wrote: I read that the news came from sources familiar with the experiment. Is there any official press release? Or only rumors? Antonio I8IOV Antonio, vedi Battiston su Le Scienze

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

2012-02-22 Thread Marco IK1ODO -2
sorry for previous message in Italian, had to be a personal one :-) Marco IK1ODO ___ 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] Rubidium Frequency Standard FE-5680A

2012-02-22 Thread WB6BNQ
Hi Ken, The Rb systems require being heated to vaporize the Rb metal and to have a stable (more or less) temperature. For the FE-5680 the 15 volt current should run between 750 to 850 milliamps when properly heat sinked. Mine is riding around 840 milliamps at the moment. The Rb is on the

Re: [time-nuts] Low-long-term-drift clock for board levelintegration?

2012-02-22 Thread Chris Albertson
Seems the problem is possible asymmetry in the speed of network connections. You really can not detect this with simple pings. But what if you send 100MB messages?Even using NTP at the tens of millisecond level you can measure the one way speed accurately if the message is long enough.

[time-nuts] OT: Research reveals illegal GPS jammer use

2012-02-22 Thread David J Taylor
The illegal use of Global Positioning System (GPS) jammers in the UK has been revealed in a groundbreaking study. Could something like this explain the recent GPS outage reported here? See: http://www.bbc.co.uk/news/technology-17119768 Cheers, David -- SatSignal software - quality software

Re: [time-nuts] Any spare switches for Racal-Dana 1992?

2012-02-22 Thread Andrea Baldoni
On Tue, Feb 21, 2012 at 06:52:57PM -0500, Charles P. Steinmetz wrote: I wrote: Speaking from extensive experience, if you need 2 now, plan on needing somewhere between 5 and 31 more over the next year or two. Stewart replied: That is my experience. I never managed to find any exact

Re: [time-nuts] Low-long-term-drift clock for board levelintegration?

2012-02-22 Thread Attila Kinali
On Tue, 21 Feb 2012 23:23:23 -0800 Chris Albertson albertson.ch...@gmail.com wrote: Seems the problem is possible asymmetry in the speed of network connections. You really can not detect this with simple pings. But what if you send 100MB messages?Even using NTP at the tens of

Re: [time-nuts] Rubidium Frequency Standard FE-5680A

2012-02-22 Thread Bob Camp
Hi Like any other electronics, Rb's reliability decreases as temperature goes up. There are a lot of parts in there and the vast majority do not need to be heated. Running them hot kills them. Been there and done that with several Rb's. Put a fan or heat sink on it. You will significantly

Re: [time-nuts] ebay warning

2012-02-22 Thread cfo
On Tue, 21 Feb 2012 13:18:26 -0700, Dave hartzell wrote: I received a few used units, and one was bad. I contacted nichegeek via eBay with the issue and symptoms, and they are sending me a replacement. Assuming it comes half as fast as the original shipment, and it works, my transaction

[time-nuts] DIY Physics Article

2012-02-22 Thread Michael Costolo
Here is a recent DIY Physics article on eBay Rb oscillators for anyone interested. It's probably more basic level (read my level) than many/most on this list. But it may be interesting or useful to others here.

Re: [time-nuts] Low-long-term-drift clock for board levelintegration?

2012-02-22 Thread pablo alvarez
I would not fully trust NTP, and as already explained taking your GPS outside as a reference for just a while is not really going to help. But..why not using GPS inside the building? Some receivers are quite sensitive, so probably you will not need an external antenna to pick up a signal. Probably

Re: [time-nuts] Low-long-term-drift clock for board levelintegration?

2012-02-22 Thread Azelio Boriani
Moreover most of actual GPS receivers are indoor capable (once got a lock with the antenna outside). I have briefly tested the uBlox and the NavSync for this feature and it works as expected. On Wed, Feb 22, 2012 at 11:52 AM, pablo alvarez pabloalvarezsanc...@gmail.com wrote: I would not fully

Re: [time-nuts] Any spare switches for Racal-Dana 1992?

2012-02-22 Thread Sam
There is a thread at http://www.eevblog.com/forum/product-reviews-photos-and-discussion/racal-dana-1992-teardown/ that has some detailed pictures of the innards of the switches, by the look of them a rubber keypad repair kit should work.

Re: [time-nuts] DIY Physics Article

2012-02-22 Thread Collins, Graham
Mike, Pretty cool site. Thanks for posting. I hadn't stumbled across that site before. Cheers, Graham ve3gtc -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Michael Costolo Sent: February 22, 2012 06:23 To: time-nuts@febo.com