Re: [time-nuts] Antennas for Symettricom 2500 Time Source

I have one, Bruce, do you have questions about it? They are readily available. Search on TELECOM SOLUTIONS TS-3500 090-71010-87 It says TS-3500 but the same part is used on the 2500. Bill On Saturday, June 9, 2018, Bruce Hunter via time-nuts wrote: > > Has anyone stumbled across the 12V

Re: [time-nuts] Simon Winchester: The Perfectionists

Bravo, bravo, bravo! On several occasions I have pointed out that there is more to time-nuttery than striving to achieve an Allen deviation measured in zeptoseconds. The silence in response is always deafening. If I want to struggle with phase angles of billionths of a degree, I can go down to my

Re: [time-nuts] Mechanical Precision Clocks

Mr. Scolnik is very well known in mechanical clock circles. On Tuesday, March 6, 2018, rfnuts wrote: > Bill Scolnik's Clocks: > http://www.precisionclocks.com/index.html > > The (non mechanical) standards lab: > http://www.precisionclocks.com/wpimages/wpe1967732_06.png > >

Re: [time-nuts] WWV or Net Clock controlled oscillator

To the yoctosecond. Very fine sand in the li'l hourglass. On Monday, March 5, 2018, jimlux wrote: > On 3/5/18 10:26 AM, Mark Sims wrote: > > Besides those clocks Heather has alarm clock and egg timer alarms. >> > > > because doesn't everyone time their soft boiled eggs

Re: [time-nuts] Need a Watch Recommendation

And that is just my point--well, part of it, anyway--ultra-precise measurement of time is profoundly important, and rightly the primary focus of this group. But for the wrist, very, very few of us need pin-point accuracy--though many seem to perceive that we do. My Tissot mechanical chronograph is

Re: [time-nuts] Need a Watch Recommendation

For those of us whose time-nuttery extends into the fascinating world of mechanical watches and clocks, the kind of accuracy usually discussed here is not only impossible but essentially irrelevant (quelle horreur!). Our interest is in the beauty and elegance of micromechanical devices that have

Re: [time-nuts] Selling Time and Frequency Equipment

Had coffee with a realtor friend yesterday who was trying to explain to a client: "It doesn't matter what you think it is worth. It doesn't matter what you say it is worth. What matters is what a buyer will pay you for it. The market, not the owner, decides the value of a piece of property. To

Re: [time-nuts] Teardown of Chinese made eBay GPS antenna.

With respect, Tom, discussion of quality issues is scarcely "social media." But...it is your list so that's the last you'll hear from me on the topic. On Thursday, February 22, 2018, Tom Van Baak wrote: > Let's keep this thread on topic and highly informative. > > Please

[time-nuts] Teardown of Chinese made eBay GPS antenna.

> On 2018-02-22 14:39, William H. Fite wrote: > >> I wish people would lighten up on Chinese goods. Perhaps you are not aware >> that China builds for and sells to both the DOD and NASA. Chinese >> manufacturers build to the specs they are given. You want cheap crap, >

Re: [time-nuts] Teardown of Chinese made eBay GPS antenna.

I wish people would lighten up on Chinese goods. Perhaps you are not aware that China builds for and sells to both the DOD and NASA. Chinese manufacturers build to the specs they are given. You want cheap crap, they'll build cheap crap. You want top quality, they'll build top quality. On

[time-nuts] Recalling and honoring our heritage

I was chided in somewhat patronizing terms by one long-time member of this group a while back for "wasting our time with obsolete crap that no one cares about." Brace yourselves, I'm going to do it again. Attached is a video (one of a series) documenting the design and construction of mechanical

Re: [time-nuts] Skilled Math Editor(s) Needed

G'morning, Bill. I didn't mean to sound like I expected Perry to pick up the ball and run with it, only that Latex was the way to go for whomever picked it up. I'd volunteer to lend a hand with that but we're both so committed with projects into the foreseeable future that there is no time

Re: [time-nuts] Skilled Math Editor(s) Needed

Latex really is the only way to go. It is the de facto standard and not all that hard to learn. My spouse and I have used it extensively for more than 15 years, constructing some fairly arcane formulae in quantum theory. On Tuesday, January 2, 2018, Bruce Griffiths

Re: [time-nuts] Holdover, RTC for Pi as NTP GPS source

nus Danielson <mag...@rubidium.se> wrote: > Super-lumious or non-speeding neutrinos? > > Cheers, > Magnus > > On 11/01/2017 04:30 PM, William H. Fite wrote: > >> Oh crap, I forgot about neutrinos. >> >> On Wednesday, November 1, 2017, William H. Fite

Re: [time-nuts] Holdover, RTC for Pi as NTP GPS source

Oh crap, I forgot about neutrinos. On Wednesday, November 1, 2017, William H. Fite <omni...@gmail.com> wrote: > Inside a three-meter thick sphere of lead and mu-metal, pressure pulled > down to .01 mTorr , temperature regulated to .001 degree C, > operating in total darkne

Re: [time-nuts] Holdover, RTC for Pi as NTP GPS source

Inside a three-meter thick sphere of lead and mu-metal, pressure pulled down to .01 mTorr , temperature regulated to .001 degree C, operating in total darkness and absolute silence, aligned with the galactic axis of rotation, and situated 20 light years from the nearest star. That should

Re: [time-nuts] GPS Antenna Feed Line Decision

True, though a friend of mine used LMR-400. On Saturday, September 2, 2017, Mark Sims wrote: > Cheap RG-59 cable coax is more than sufficient for 50 .. 150+ feet (unless > you are doing geodetic level GPS work). It is recommended by several GPSDO > makers. The 50/75 ohm

Re: [time-nuts] Ed Tuck, founder of Magellan, dies

Ed, I think. On Fri, Jul 14, 2017 at 2:51 PM, Jeremy Nichols wrote: > Arthur Clarke wrote "Silence Please" between 1953 and 1956, according to > his Preface to Tales From the White Hart." Only 60 years and we have real > silencers! (For extra credit, what was Fenton's first

Re: [time-nuts] WWVB & Eclipse

with just 1PPS measurements. > > /tvb > > [1] https://en.wikipedia.org/wiki/TNT_equivalent > > > - Original Message - > From: "William H. Fite" <omni...@gmail.com <javascript:;>> > To: "Discussion of precise time and frequency meas

Re: [time-nuts] WWVB & Eclipse

ss that might qualify > for a very loose > definition of the term “hypothesis” in my case. I can’t speak for Tom. > > Bob > > > On Jul 13, 2017, at 6:24 PM, William H. Fite <omni...@gmail.com > <javascript:;>> wrote: > > > > Tom, are some specific hy

Re: [time-nuts] WWVB & Eclipse

Is there a study based on GPS observations? > >> > >> -- > >> Have Fun, > >> > >> Brooke Clarke, N6GCE > >> http://www.PRC68.com > >> http://www.end2partygovernment.com/2012Issues.html > >> > >> ___ > &g

Re: [time-nuts] A milestone approaches

(DOY = 283, Tue) = JD 245.5 = MJD 5.0 > 2023-02-25 00:00:00 UTC (DOY = 56, Sat) = JD 246.5 = MJD 6.0 > > /tvb > > ___ > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > To unsubscribe, go to https://www.febo.com/cgi-bin/ >

Re: [time-nuts] Yet Another GPSDO design - Timing on the move

gt; It’s mainly a matter of causality. If you have an anomalous reading, there > is likely a “findable” reason > for it. Finding that reason probably gives you useful information about > the design and how to > improve it. > > Bob > > > On Jun 26, 2017, at 4:17 PM, Willia

Re: [time-nuts] Yet Another GPSDO design - Timing on the move

> > is a bit over the eBay price of a Thunderbolt). Some stay in Amsterdam > over > > the summer to collect phase data; for those coming to Monaco I'm still > > undecided whether I'll try a simple version of my FLL/PLL or to just use > > this trip for logging. > >

Re: [time-nuts] Power connectors continued

ts mailing list -- time-nuts@febo.com <javascript:;> > >> To unsubscribe, go to > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > ___ > > time-n

Re: [time-nuts] The clocks at Windsor Castle, UK

_ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> >> >> > ___

Re: [time-nuts] The clocks at Windsor Castle, UK

;> time-nuts mailing list -- time-nuts@febo.com <javascript:;> > >> 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

Re: [time-nuts] Are we really on the right track?

her-time-may-be-fuzzy-if- > so-idea-causality > > N0UU > ___ > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instr

[time-nuts] Entanglement of quantum clocks through gravity

Here's an interesting paper that some of you may already have seen. The math will yield to a little determined concentration http://m.pnas.org/content/114/12/E2303.full Bill -- William H Fite, PhD Independent Consultant Statistical Analysis & Research Met

Re: [time-nuts] Car Clock drift - the lowly 32kHz tuning fork crystal specs

ts mailing list -- time-nuts@febo.com <javascript:;> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > -- William H Fite, PhD Independent Consultant Statistical Analysis & Research Methods ___ 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] Time Dilation tinkering

d to follow if they insist on opening it so you show > up at the airport hours ahead of time. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > an

[time-nuts] time-nuts equipment verification from scratch (was: WTB: GPSDO)

tely founded. All > the prosperity and technological sophistication in the world is of no > use without that foundation. > -- Miss Matheson, The Diamond Age, Neil Stephenson > ___ > time-nuts mailing list -- time-nuts@febo.c

[time-nuts] Daylight saving time

a reset, did come up with daylight saving time > Bert Kehren Palm city Fl. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instruct

Re: [time-nuts] Antique precision timing device without electronics

ever attribute to malice what can adequately be explained by incompetence. > ___ > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions the

Re: [time-nuts] Bye-Bye Crystals

https://www.youtube.com/watch?v=b--FKHCFjOM On Mon, Mar 13, 2017 at 8:11 PM, Hal Murray wrote: > > jim...@earthlink.net said: > > what about cheap crystals for microcontrollers.. I think the Arduino, > for > > instance, uses a crystal (and the oscillator electronics are

Re: [time-nuts] What interrupts aging?

No, it is not possible to grow absolutely perfect quartz crystals, nor do they occur naturally. I had a connection with some Corning researchers years ago who were trying to do exactly that. They found it impossible to control the hundreds of variables necessary to accomplish that goal. Happily,

Re: [time-nuts] Li-ion Battreries

Whatever makes you feel safe, Mark. The internet has a plenitude of horror stories, some of which would make you think that the only prudent course was to store them in an underground bunker. Our study used several hundred batteries, all stored in surplus cal .50 ammunition cases in

[time-nuts] Li-ion Battreries

In the days prior to my recent retirement, when I was directing research at a large VA Medical Center, one of our projects used inordinate quantities of 18650 Li-ion batteries. We found in short order that buying from Amazon or eBay was penny wise and pound foolish. Rather than flogging the

Re: [time-nuts] Low CostTemperature sensor

Orin is correct. To refer to an exponential relationship as directly proportional is erroneous yet people use it that way commonly and everybody knows what they mean. It just sets the teeth of statisticians like me on edge. On Tue, Jan 17, 2017 at 12:46 PM, Orin Eman wrote:

Re: [time-nuts] hm H Maser

On Tuesday, January 10, 2017, jimlux wrote: > > This fits in the bucket of a cross-disciplinary project, like building a > fusor, or a pulsed TEA laser, a Bose-Einstein Condensate generator, or any > of a variety of similar projects. Or a Lazar gravity warp

Re: [time-nuts] hm H Maser

Bob, I think you're missing the point here. This is not the quest for utimate standards of accuracy/precision/resolution, it Is not about economic viability, or even attainability, let alone being "worth the trouble.". It is about a fun project. Fun even if it comes to nothing. Is that difficult

Re: [time-nuts] σ vs s in ADEV

Professional statistician here. Your explanation is clear and lucid, in contrast to some earlier attempts here. I agree that with oscillators the distinction between N and N-1 is not particularly relevant. I must caution you, however, not to be too dismissive of the difference between the two.

Re: [time-nuts] UCCM GPSDO

Unbelievably Crude Clock Mechanism:) On Sunday, December 4, 2016, Bryan _ wrote: > I think the designation "UCCM" actually applies to the Symmetricom GPSDO > boards. Since most of these tend to come salvaged from China, tongue in > cheek I suspect "Unusable, Crushed,

Re: [time-nuts] Nutty time-nuttery with WWVB

ies, of which every household > has a hand full of it? > > 73 > KJ6UHN > Alex > > On 11/10/2016 9:22 AM, William H. Fite wrote: > > I heartily second Charles' admonition regarding FCC PART 15 unlicensed > > transmissions. Part 15 explicitly states that

Re: [time-nuts] Nutty time-nuttery with WWVB

't give a damn about FCC Part 15 and radiating > radiating day and night with substantial power, I meant that FFC approved > and not approved switching mode power supplies, of which every household > has a hand full of it? > > 73 > KJ6UHN > Alex > > > On 11/10/2016 9:22 AM, Wil

Re: [time-nuts] Nutty time-nuttery with WWVB

I heartily second Charles' admonition regarding FCC PART 15 unlicensed transmissions. Part 15 explicitly states that an unlicensed operator may not cause interference with any licensed transmission. Because of the specific purpose of WWV/WWVB transmissions, any discernible leakage detectable by

Re: [time-nuts] I love the smell of tantalum in the morning

It's obvious you've never had a manicure, Adrian. An orangewood stick is an instrument for torturing the cuticles. Il faut soufrir pour etre belle! On Sunday, November 6, 2016, Adrian Godwin wrote: > You might also want normal cold tweezers to place the part. I'm not

Re: [time-nuts] Software availability for Trimble module boxed with two serial ports

Have you tried the stock Thunderbolt? On Thursday, November 3, 2016, Giuseppe Marullo wrote: > Just ordered one of these: > > http://www.ebay.it/itm/252162780444?_trksid=p2057872.m2749. > l2649=STRK%3AMEBIDX%3AIT > > Asked the seller for documentation and or software but

Re: [time-nuts] So what’s inside that Cs Beam Tube anyway?

I may be missing something (as I often do) but why not just buy some cesium? About ten bucks a gram for high-purity metal in glass ampoules. On Wednesday, November 2, 2016, Peter Reilley wrote: > Just throwing this out: would it be possible recover the cesium by

[time-nuts] What would be the proper equipment and procedure?

Bill, it isn't quite so simple as that. While handling and ingestion of metallic mercury is ordinarily benign, inhalation of mercury vapor is not. The vapor pressure of metallic mercury is quite low but even very modest concentrations, which can readily occur at room temperature, can exhibit

Re: [time-nuts] Temp/Humidity control systems?

Just for the fun of it, here is how NIST measures humidity. https://www.nist.gov/sites/default/files/documents/calibrations/sp250-83.pdf On Thu, Oct 27, 2016 at 3:30 PM, William H. Fite <omni...@gmail.com> wrote: > NIST-traceable hygrometers are readily available in the $200-$

Re: [time-nuts] Temp/Humidity control systems?

NIST-traceable hygrometers are readily available in the $200-$400 range. Or you can get a couple of airtight boxes of precisely the same volume and go gravimetric... On Thu, Oct 27, 2016 at 9:43 AM, Ron Bean wrote: > >* You cannot "feel" absolute

Re: [time-nuts] Temp/Humidity control systems?

ng Kamp <p...@phk.freebsd.dk> wrote: > > In message < > cany2ixrmyy2e9pbdgcqiuzgne_8rpl4kkuw2j4pdjlbj+j1...@mail.gmail.com > <javascript:;>> > , "William H. Fite" writes: > > >Rick, professional environmental chambers [...] > > And

Re: [time-nuts] Temp/Humidity control systems?

Rick, professional environmental chambers and their contents have a great deal of thermal inertia. In addition, they have overbuilt refrigeration systems, electric heaters, and de/humidifiers. You teach your lab rats to enter the chambers as infrequently as possible, to close the doors as quickly

Re: [time-nuts] Temp/Humidity control systems?

John, this is what I bought for the Orlando VA Medical Center when I was setting up the research lab there. Not cheap, though. 螺 https://www.thermalproductsolutions.com/products/walk-in-temperature-humidity-test-rooms On Wed, Oct 26, 2016 at 11:59 AM, John Ackermann N8UR wrote:

Re: [time-nuts] Has anybody checked this? GPSDO in kit

Bravo for boat anchors, Wes. I have a Collins R390 with a tuning gear train so complex it has to go in every 3000 miles for an oil change. On Sunday, October 23, 2016, Wes wrote: > On 10/22/2016 9:22 AM, Chris Albertson wrote: > >> >> You have to remember what this thing

Re: [time-nuts] Has anybody checked this? GPSDO in kit

You need to catch up on what hams are REALLY using. On Saturday, October 22, 2016, Chris Albertson wrote: > > Unfortunately, it could be *lots* worse (like many orders of magnitude > > worse). It all depends on which parameter you > > are looking at and how much you

Re: [time-nuts] Need Time Help

the goal of time nuts is always "mine is smaller than yours". > > /tvb > > ----- Original Message - > From: "William H. Fite" <omni...@gmail.com> > To: "Nick Sayer" <nsa...@kfu.com>; "Discussion of precise time and > frequency me

Re: [time-nuts] Need Time Help

Indeed, Nick. And more than a little (usually) courteous one upmanship couched in terms of being helpful by correcting all previous posters. This gentlemanly "mine is bigger than yours" phenomenon is part of what makes this group fun to read. On Thu, Oct 6, 2016 at 2:03 PM, Nick Sayer via

Re: [time-nuts] Vintage Quartz Crystal Manufacturing

So cynical, Bob. ☺ The fact is that many, many short films of this type were made during WWII and to a lesser extent during the Cold War, primarily for educational awareness of the general pubic as well as members of the armed forces. A great uncle of mine who was an executive at RCA oversaw the

Re: [time-nuts] negative mention of products (was: DIY VNA design)

A friend some 20 years ago was the risk manager of a large health care corporation. When confronted with an individual threatening a groundless or nuisance lawsuit, she would smile sweetly and say, "Go right ahead. I have more than a hundred lawyers on the payroll. How many do you have?" Largely

Re: [time-nuts] Speaking clock

I want the voice of Forbin's megalomaniacal computer saying, "This is the voice of world control. I bring you peace" On Wednesday, August 17, 2016, Didier Juges wrote: > I would like to find an emulator of the old voice synthesizer used in the > Atlanta airport subway.

[time-nuts] Lady Heather Data Explained?

The phrase, "ill documented' comes to mind. It is a wonderful piece of software but opaque and intimidating to the newbie. On Wednesday, August 17, 2016, Richard Mogford > wrote: > Does anyone have a description of the

Re: [time-nuts] Working with SMT parts.

For me, the ideal solution is an eyeglass-mounted surgical loupe such as this: http://www.surgitel.com/loupes/prismpro-line. There are several manufacturers. Long working distance, superbly corrected optics, no bino microscope or Mantis monstrosity cluttering up the bench. Not cheap but a lifetime

Re: [time-nuts] HP5370 power supply measurements

t; cany2ixq6onvridofgnfkebqjdkntp7t8kue7boupxjwlcux...@mail.gmail.com > <javascript:;>> > > , "William H. Fite" writes: > > >David Kirkby scripsit: > > >> > > >> I often here of people replacing fans with quiter ones, but I suspect > >

Re: [time-nuts] HP5370 power supply measurements

...@mail.gmail.com > <javascript:;>> > , "William H. Fite" writes: > >David Kirkby scripsit: > >> > >> I often here of people replacing fans with quiter ones, but I suspect > that > >> all they really do is reduce the airflow. > > >

Re: [time-nuts] HP5370 power supply measurements

David Kirkby scripsit: > > I often here of people replacing fans with quiter ones, but I suspect that > all they really do is reduce the airflow. Not necessarily, Dave. The Austrian company, Noctua, for one, makes extremely quiet fans with excellent airflow.

Re: [time-nuts] A different way to think about time dilation?

Chris, if you want to verify the mathematical operations you can send them to me and my spouse and I will check them for you. As to whether you chose the right equations, you probably need the help of a physicist. Bill On Monday, July 11, 2016, Chris Albertson wrote:

Re: [time-nuts] jovian and saturnian day length

Here's some insight into measurement of jovian rotation back in the good old days. A wee bit more sophisticated than looking at the Great Red Spot. Gardner, FF & Shain, CA (1958). Further Observations of Radio Emission from the Planet Jupiter. Australian Journal of Physics 11(1) 55-69. On

Re: [time-nuts] Visiting Greenwich

Looks like a control panel out of a 1950s space movie. On Tuesday, July 5, 2016, Clint Jay wrote: > Actually, you're absolutely right, the speaking clock is on an upper > gallery display with other timepieces, some of which are amazing. > > I've just looked back through

Re: [time-nuts] Visiting Greenwich

The ring counters are called dekatrons. I built a clock/timer using them when I was 12 or so. On Tuesday, July 5, 2016, Alan Melia wrote: > Hi Clint I think when I discussed this last a few years ago with the > speaking clock designer and David Rooney the man

Re: [time-nuts] Longitude

Wasn't Christian Huygens the first to devise a clock for the purpose of determining longitude? Or was it Edmund Halley...but he didn't rely on clocks. I think On Tuesday, July 5, 2016, Hal Murray wrote: > > rch...@earthlink.net said: > > “Longitude:

Re: [time-nuts] Visiting Greenwich

I second the motion, John, re Bletchley Park. My spouse is a quantum information theorist (sort of a cross between a quantum physicist and a theoretical mathematician) who develops algorithms that crypto people then adapt for practical use. Mostly for quantum crypto. Both of us found Bletchley

Re: [time-nuts] Measuring receiver...

or some copy cat version) was the key of choice. > > You could ID Operators by what they called ..."swing"... , the > spacing between Dots and Dashes. > > 73, Dick, W1KSZ > > -Original Message- > From: time-nuts [mailto:time-nuts-boun...@febo.com <jav

Re: [time-nuts] Measuring receiver...

In the days of my misspent youth, I worked as a telegrapher (one of the very last) for a Norwegian shipping line. We sent and received both Norwegian and English though few of us were bilingual. Between ships and shore stations, there were about forty of us and we all could recognize each other's

Re: [time-nuts] RG6 or LMR400 for GPS Antenna (Symmetricom 58532A and T-bolt)

Mark is right on target re the connectors; get the best you can afford. Amphenol or equivalent. Self-fusing silicone tape is a lot faster and easier than the 3M black tape. Just stretch and wrap, it conforms beautifully, is highly resistant to UV, and won't stiffen and crack in the cold. Best of

Re: [time-nuts] Subject change - sources for coax cable and other RF stuff - was RG6 or LMR400 for GPS Antenna

Antenna Farm is also good. They'll terminate any length for you at reasonable cost. http://www.theantennafarm.com/ No financial interest, just a satisfied customer. Bill On Thursday, April 21, 2016, DaveH wrote: > If you are looking at getting some LMR400, Ham

Re: [time-nuts] RG6 or LMR400 for GPS Antenna (Symmetricom 58532A and T-bolt)

I've gotten some very poor quality RG6 in the past, despite having purchased it from ostensibly reputable sources. Now I use honest-to-goodness Times Microwave LMR400. I have terminated LMR400 with BNC, PL259, SO239, and N connectors and never had one fail. It is not at all difficult to do. "The

Re: [time-nuts] Can a Symmetricom 58532A antenna and ham radio transmitters coexist?

Good morning, Pete. My 58532 antenna is about 10 meters away from a UHF/VHF vertical through which I run up to 50W and about 25 meters from an HF magnetic loop which I feed with up to 500W. I have had no issues with the Symmetricom antenna or the T'bolt that it feeds. Bill KJ4SLP On Thursday,

Re: [time-nuts] Time Lord, video of

I had the privilege of meeting Dr. Levine once at NIST. He is a completely disarming, modest, unassuming.genius. On Thu, Mar 3, 2016 at 8:41 PM, Tom Van Baak wrote: > There was just a CNN link to this timely video of Judah Levine: > > Just Call Him the 'Time Lord' >

[time-nuts] HP Reliability

They don't wonder; they know very well. But they're stuck. Consider oscilloscopes. Why pay for a Keysight or Tectronix or LeCroy or, God forbid, a Rohde & Schwarz when, for the vast majority of applications, a Rigol will give you everything you need at 1/N the cost? The hugely expensive,

Re: [time-nuts] List Noise Level [was...]

Like this polemic didn't worsen the S/N ratio? On Wed, Jul 13, 2011 at 10:07 PM, WB6BNQ wb6...@cox.net wrote: Will, Did you actually read what I wrote ? I ask because your response, below, would suggest a low comprehension rate. I noted a number of your responses fall into the same

Re: [time-nuts] MIT RADIATION LABORATORY SERIES 1940-1945 (28 VOLS) on eBay

I just ran into one of our attorneys in the hallway. Copyright refers to the intellectual property, not to the medium. The fact that the intellectual property of the author is moved from a book to a CD does not affect copyright, so long as the content is not otherwise altered. Think about it;

Re: [time-nuts] Tek The Oscilloscope Reference Kit

John, Who makes the best ones? Agilent? For my piddling purposes, my little Rigol is fine. Just wondered what you big guns prefer. Bill On Wed, Jul 13, 2011 at 12:56 PM, J. Forster j...@quik.com wrote: It's a shame Tek doesn't make good 'scopes any more. -John ==

Re: [time-nuts] MIT RADIATION LABORATORY SERIES 1940-1945 (28 VOLS) on eBay

of a case where a publisher like McGraw-Hill's copyrighted book full of public domain IP could be copied if you used your own type font, and formatting of pages, pictures and text, etc... -Chuck Harris William H. Fite wrote: I just ran into one of our attorneys in the hallway. Copyright refers

Re: [time-nuts] Am I the only Time Nut who doesn't wear a watch?

Then there is this little number... http://forums.watchnet.com/index.php?t=treegoto=415170rid=0 On Sun, Jul 10, 2011 at 10:56 AM, Rob Kimberley r...@timing-consultants.comwrote: My comment was a bit tongue in cheek. Novelty value only. I'm sure about a day wearing that would be enough for

Re: [time-nuts] Am I the only Time Nut who doesn't wear a watch?

I've not been to Beijing but the National Palace Museum in Taipei has some remarkable mechanical clocks, including water clocks. My Significant Other is Taiwanese and whenever I get smug there is nothing like a visit to the NPM to remind me that the Chinese were crafting breathtaking objets d'art

Re: [time-nuts] NERC/TEC test

In fact, that was exactly what Accutron watch technicians were taught to do. They deliberately set the watches to run slow (~4 seconds per day, I think, but someone may correct me on that) because, when worn, slight bumps and jars would stimulate the tuning fork to vibrate slightly faster for a

Re: [time-nuts] NERC/TEC test

BTW, how many of us have running Accutrons? I surely can't be the only one. On Fri, Jul 8, 2011 at 8:56 AM, William H. Fite omni...@gmail.com wrote: In fact, that was exactly what Accutron watch technicians were taught to do. They deliberately set the watches to run slow (~4 seconds per

Re: [time-nuts] NERC/TEC test

quartz watches will go 5 years on a cell, and keep way better time than the Accutron ever did, and are silent when you place them on your bedstand. -Chuck Harris William H. Fite wrote: BTW, how many of us have running Accutrons? I surely can't be the only one. On Fri, Jul 8, 2011 at 8

Re: [time-nuts] Am I the only Time Nut who doesn't wear a watch?

I worked at one time for an employer who give 35-year retirees a Rolex. That was about 20 years ago but I think they still do it. On Fri, Jul 8, 2011 at 11:37 AM, Pete Lancashire p...@petelancashire.comwrote: I normally don't. Use to but one day it stopped working and never got it repaired.

Re: [time-nuts] NERC/TEC test

) automatics. I have a certain fondness for the manual wind 10AK movements too... But I never much cared for the Accutron. I may be dumb, but I do know the market rates for Accutrons. If I had any, I would be fixing and selling them, not giving them away. -Chuck Harris William H. Fite

Re: [time-nuts] Am I the only Time Nut who doesn't wear a watch?

Bravo, Rob. I thought I was the lone voice crying in the wilderness in support of watches. My beater is an Omega Seamaster that goes everywhere and does everything all the time. My others tend to sit in their rocker boxes and seldom get worn. On Fri, Jul 8, 2011 at 12:51 PM, Rob Kimberley

Re: [time-nuts] The right kind of TIMER

And, from the same source, it should be easy to vastly improve the accuracy of this one. http://evilmadscience.com/productsmenu/tinykitlist/156 On Sat, Jul 2, 2011 at 5:35 AM, WB6BNQ wb6...@cox.net wrote: To all, Here is just the right kind of TIMER to have. Quite an interesting effort

Re: [time-nuts] Remotely read power meters

I'm with you, Hal. I am very poorly educated with respect to electrical engineering and thus find this list a great place to listen and learn. But there are a handful of folks who seemingly cannot post without bashing the government or the president or the FCC or anyone handy. IMO, this does

[time-nuts] How does it work?

For the sake of this poor, befuddled non-engineer, would one of you worthy gentlemen explain how it is that lasers striking a mass of cesium atoms and compressing them into a ball (in a cesium fountain) has the effect of cooling them to near absolute zero? That seems counter-intuitive to me, but

Re: [time-nuts] How does it work?

if you keep the atoms at rest, it's equivalent to cooling them. One definition of the absolute zero is that there is no motion of atoms. HTH, Jean-Louis - Original Message - From: William H. Fite omni...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com

Re: [time-nuts] Transformer design.

Without meaning to sound sassy, Brooke, let me assure you that there is nothing just about it. While in high school I built quite a large Tesla coil with a 16kv, 60ma neon transformer, a pressurized air-quenched spark gap, a huge variac, and a bank of 50 .15mfd (I think they were .15mfd--that was

Re: [time-nuts] When buying, watch for scammers

Strongly suggest that you not only leave negative feedback but also send a note to ebay, stating the circumstances. I had the same experience a year or so ago, did both those things, and got an email back from ebay stating that they would communicate with the seller. I anticipated he would give

Re: [time-nuts] DPC Latency

Those of us who run SDRs are all too familiar with the DPC issue... You're right, this is a useful little tool. Bill On Sat, Jun 18, 2011 at 9:42 AM, Bob Camp li...@rtty.us wrote: Hi DPC Latency = Deferred Procedure Call Latency = how long it takes Windows to get around to doing what it

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