Re: [time-nuts] Z3801A Oven Controller Schematic Needed

There are some schematics on Didier’s site http://www.ko4bb.com/manuals . If they are not sufficient and none are forthcoming, I have one powered down which I could photo if you think that would help. Le 13 janv. 2015 à 18:21, Craig Anderson w9...@baldwin-telecom.net a écrit : I had a

Re: [time-nuts] Z3805A GPS module going deaf, what modules can replace it?

The model number is that of an Oncore VP. It is easy to remove the receiver from the unit for testing independently. That might be worth a try. Maybe reseating it may help if there is any continuity problem on the pins. Unfortunately you will probably need another VP to replace a dead one.

[time-nuts] TDS12 (AKA PRS10) use indication.

I have a SR TDS12 which apart from name appears to be a PRS10. The ID string indicates PRS10 and the firmware version is the same as on another PRS10 that I have. The only differences that I could see at first power up is the that default config has Lock Mode 2 as opposed to the normal default

Re: [time-nuts] June 30 2015 leap second

in advance. When either of the two flags is set, the kernel will trigger the leap event in the last seconds of the current day. GPS should announce the pending leap second not long after the IERS announcement. I haven't checked my clocks yet but it may already be out there. I haven’t looked

Re: [time-nuts] ***SPAM*** Re: ***SPAM*** Motorola Oncore UT+ firmware upgrade backup power questions

Le 14 mars 2015 à 19:01, Pete Stephenson p...@heypete.com a écrit : On Sat, Mar 14, 2015 at 12:56 PM, Mike Cook michael.c...@sfr.fr wrote: If true, what is the maximum current that can be safely supplied by the pin? As above, is it safe to use a non-rechargeable battery like a CR2032

[time-nuts] Fwd: PRS10 question - revisiting an old one with an accent on small signal detection

implement it if it is worth testing. Regards,Mike Début du message réexpédié : De: mike cook cook.mich...@orange.fr Objet: Rép : PRS10 question Date: 1 mars 2014 16:50:12 UTC+1 À: Jarl Risum jarl.ri...@gmail.com Hi Jarl, Sorry about the late update but I was waiting for parts. I

Re: [time-nuts] ***SPAM*** Motorola Oncore UT+ firmware upgrade backup power questions

Le 13 mars 2015 à 21:33, Pete Stephenson p...@heypete.com a écrit : Hi all, After a few years of using a Garmin GPS 18x LVC for timekeeping, my budget now allows for some upgrades and I had a small field day on eBay: I acquired a Trimble Thunderbolt, two Trimble Resolution Ts, and two

Re: [time-nuts] ***SPAM*** Motorola Oncore UT+ firmware upgrade backup power questions

If true, what is the maximum current that can be safely supplied by the pin? As above, is it safe to use a non-rechargeable battery like a CR2032? I have a couple of UT+ receivers which were not equipped with batteries and I used a CR2032 for backup without any issue. They were

Re: [time-nuts] No GPS satellites

Just a heads up as I stumbled on an interesting XL-DC plugin module for sale on ebay while looking for info for Doug. TrueTime Symmetricom XL-DC FTM-III AC Line Frequency Measurement Time Monitor Unfortunately I don’t have an XL-DC, but it looks just just the tick for a time nut who has.

Re: [time-nuts] ***SPAM*** SRS TSD11 Rubidium Oscillator

TSD11 or TSD12? I have a couple of the latter and they seem to be the same at a PRS10 that I have. I have done some measurements on frequency and stability and they are in spec or there about. Hooked up to RS232, they look and drive like a PRS10. I use the RbMon tool. The ID string is in fact

Re: [time-nuts] No GPS satellites

The XL-DC Can use either a normal L1 or Down converter Antenna according to the manual. http://www.prostudioconnection.net/1112/xl-dc-manual.pdf If your antenna works with the Lucent then it will be a normal one. Does your XL-DC have any option codes? Ceux qui sont prêts à abandonner une

Re: [time-nuts] Need advice for multilateration setup

Sounds over complicated. Why not use an onboard triple-axis accelerometer? A few mm of real-estate, milliamp consumption, up to 16g, 600+ samples a sec. The code is probably already available. Le 26 mars 2015 à 03:27, Robert Watzlavick roc...@watzlavick.com a écrit : I'm working on a

Re: [time-nuts] I wish to shorten GPS antenna cable - should I let receiver find the position again?

Le 23 avr. 2015 à 14:03, Dr. David Kirkby (Kirkby Microwave Ltd) drkir...@kirkbymicrowave.co.uk a écrit : I have an HP 58503A which I am using as a frequency source only - not to tell the time. I want to shorted the antenna cable a bit, but are wondering if I should let the GPS receiver

Re: [time-nuts] Tymserve 2100 thinks it's 1995?

Le 4 mai 2015 à 12:43, Chris Mottram c.mott...@ljmu.ac.uk a écrit : Hi Bob, I've just this minute joined this list, because I Tymserve 2100 unit we have at work has just started doing the same thing, at just gone 1am UT on May 3rd. I've also tried restarting and power cycling (this is

Re: [time-nuts] The GPS 1995 problem and the Heol Design solution.

Le 15 mai 2015 à 22:16, Sean Gallagher s...@wetstonetech.com a écrit : Good afternoon everyone, Thanks for sharing this with us Sean. So as most (all) of you are aware at this point what seems to be like all of the Trimble Ace III GPS receivers have looped around their entire

Re: [time-nuts] Thunderbolt Height Error

Le 18 mai 2015 à 08:34, Demian Martin demianm@gmail.com a écrit : I have 2 GPSDO's. A Thunderbolt and an Arbiter 1083A. The Arbiter is old but it works fine (and has a Wenzel 5 MHz streamline oscillator in it). It has the 1995 firmware issue, and I could get new firmware for it ($$) but

Re: [time-nuts] Efratom/Datum GPSDO GPS-FC

Le 1 juin 2015 à 15:38, Vlad t...@patoka.org a écrit : Paul, For the testing purpose, I connecting GPS-FC to my GPS Distribution Amp. This is why antenna has disconnected on the picture. When I testing this unit - i connecting coax to it. Yesterday, I connected TTL serial to its

Re: [time-nuts] End Of The World

Le 1 juil. 2015 à 09:02, Hal Murray hmur...@megapathdsl.net a écrit : michael.c...@sfr.fr said: Lady Heather just went told me 23:59:59 , 00:00:00 and stayed there for 2 secs, No 23:59:60 :-( What sort of device was it looking at? a T-Bolt. Firmware 3.0 GPS 10.2 .Mfg. 2002. Leap

[time-nuts] End Of The World

Lady Heather just went told me 23:59:59 , 00:00:00 and stayed there for 2 secs, No 23:59:60 :-( Le 1 juil. 2015 à 03:03, Bob Camp kb...@n1k.org a écrit : Hi So are we all still here? Any portion of the group blasted into non-existance by the leap second please speak up :) === Any

Re: [time-nuts] GPS/UTC time

Le 5 juil. 2015 à 14:38, Jim Lux jim...@earthlink.net a écrit : On 7/4/15 10:25 PM, Brian Inglis wrote: Thanks for the good and interesting refs. One of the interesting points was that normal variations are multiples of those caused by earthquakes, and annual variations are up to 1ms and

Re: [time-nuts] More serial ports in NanoBSD

Le 12 août 2015 à 22:26, Willy Willemse willy.wille...@telenet.be a écrit : Hi all, I have a got a NanoBSD image with NTPns from Jason Rabel because I am a complete noob in FreeBSD, I tried to build an image but there were so many pitfalls for me that I asked Jason for a copy of his

Re: [time-nuts] SRS PRS10 repair

Le 22 août 2015 à 03:40, Bob Camp kb...@n1k.org a écrit : Hi On any microprocessor based gizmo, getting the micro running (again) is generally priority number one. It sets everything up and gives you the diagnostic info you need to go further. Garbled serial is better than none at

Re: [time-nuts] Austron 2010B useful in Australia/Sydney at all ?

Trying again in case the SPAM header frightened you. My ISP is flagging some nut mail. Don’t know why. Le 27 juil. 2015 à 09:44, Mike Cook michael.c...@sfr.fr a écrit : Back in the 2011, the same Q was asked here and there was a response from Rob Kimberley who had worked at Austron

[time-nuts] Fwd: NIST UT1 time service

Hi, Some first tests of the NIST UT1 service recently announced. Forwarded comms with Judah Levine. I’d be interested to hear the experiences of others . Regards, Mike Début du message réexpédié : De: Mike Cook michael.c...@sfr.fr Objet: NIST UT1 time service Date: 21 juillet 2015 20:23

Re: [time-nuts] Re GPS Leap Second

Le 16 juil. 2015 à 12:52, Blair Lade bla...@bettanet.net.au a écrit : Hi All, I've just joined time nuts so go easy on me! An interesting 'moment' in time was had during the leap second! The Symmetricon 2100 I have is fitted with the modified Heol GPS. According to the video I

[time-nuts] Update on Skytraq venus8

Back in January it was reported here that the Venus 8 timing modules from Skytraq as used in the LTE-Lite, had a firmware bug that was causing the leap second to be applied as soon as the warning was seen in the GPS stream. I had bought one from Navspark and once I reported the issue they

Re: [time-nuts] UBLOX LEA-5T Programming?

> Le 9 oct. 2015 à 16:16, Clint Jay a écrit : > > I am still learning and want to understand, if the PPS is good then why is > the programmable output bad, as I understand it thus far, the PPS is > derived from the same clock source or have I got that badly wrong? Yes, the

Re: [time-nuts] Trimble Resolution [T, SMT, SMT GG] - spontaneous GPS loss of signal events, multiple locations

> Le 14 sept. 2015 à 13:28, Wojciech Owczarek a écrit > : > > Hello Time Nuts, > > I was wondering if other people have seen this. 20+ receivers and they all > use different variants of the Resolution boards - majority are the old > Resolution T.We have observed

[time-nuts] syncronized clocks

> Le 17 sept. 2015 à 02:00, Can Altineller a écrit : > > Hello, > > I started putting a test setup together when I suspected the DS3231 RTC's I > got from dx.com were fake. So I put 2 mcus, each measuring microseconds > from each 1PPS output with an interrupt, for the

Re: [time-nuts] New Symmetricom 58532A antennas - Launch3

> Le 2 oct. 2015 à 15:01, Steve a écrit : > > The Symmetricom data sheet mentions the Option AUB antenna mast. What is > that? I don't find details of it. How does you mount the 58532A antenna if > the Option AUB mast is not available? The data sheet has the mast

Re: [time-nuts] Symmetricom experts?

Hi Chrs, Not an expert… but usually computer systems give some indication of why a boot is failing on the systems console. The S200 is probably a unix based system as it has utilities such as SSH. TELNET. HTTP. So you could try connecting an RS232 terminal , or telnet’ing to its console

Re: [time-nuts] syncronized clocks

> Le 18 sept. 2015 à 03:26, Can Altineller a écrit : > > Hello All, > > Thank you for your illustrious answers. I suspected that the RTC's were > fake when someone alerted me on a forum, 43oh, when I was trying to make > them work with energia, and a TI microcontroller. A

Re: [time-nuts] PPS phase between two GPS units.

> Le 22 déc. 2015 à 06:16, Brian Inglis a > écrit : > > On 2015-12-21 18:24, d...@irtelemetrics.com wrote: >> So I've been playing with some timing hardware here, and have noticed >> something rather curious. I have two otherwise identical Lea-6T GPS modules,

Re: [time-nuts] PRS10 1 PPS Out having random phase jumps

I’ve not seen this but have only used the 1PPS OUT for validating the perf. specs. I have seen no issues over 1-10 secs. Over what time scales are you talking ? Is the 1PPS IN being used to discipline the outputs? > Le 23 nov. 2015 à 21:11, James Robbins a écrit

Re: [time-nuts] PRS10 Heatsink Temperature

> Le 24 nov. 2015 à 01:33, Charles Steinmetz a écrit : > > David wrote: > >> I plan to add a small temperature controlled fan to limit the heatsink >> temperature. Can anyone recommend a suitable setpoint for the heatsink? > > An SRS engineer once told me to keep the

Re: [time-nuts] How to get unknown frequency quartz crystals oscillating

Thanks all for your advice, hints, tips and links. Lots to read , do and some hardware to check. I don’t have a frequency generator so I’ll have to go another route. Oh. One last Q. Has anyone tried repairing the « spring » wire electric connections on large quartz plates. In one large unit

Re: [time-nuts] Divide by 3

> Le 8 juin 2016 à 15:55, Nick Sayer via time-nuts a écrit > : > > I’m contemplating trying my GPS board with an FE-405B. That’s a different > kettle of fish, but at the end of that, if I’m successful, one of the goals > would be to be able to use it for the external

Re: [time-nuts] Clock Block Unavaliable - Alternative Solutions ?

As you only want one frequency you could use the ICS525 which I think the clock block uses and hardwire the relevant select pins. There is a calculator (windows only) available on the IDT site which gives input pin

[time-nuts] How to get unknown frequency quartz crystals oscillating

Hi, I have a number of crystals either in glass, bakelite, ceramic or metal housings that I would like to get resonating . They are of three basic types. Square, or rectangular flat Round flat Bar square section Sizes range from 2-10cm or more in the longest face. Some have frequency

Re: [time-nuts] Mystery hp Ovens For Sale

> Le 4 juin 2016 à 06:59, Ian Stirling a écrit : > > It looks like the quartz is in the sealed glass "valve", or "tube". > > I have removed a similar glass vacuum enclosed 100 kHz frequency > marker generator from my Eddystone EA12 receiver that I bought from > Tom Roberts,

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

> Le 25 mai 2016 à 16:59, David a écrit : > > I was designed as a transmitter hunting antenna sacrificing size and > gain for minimum side lobes. I’ve got to see your selfie. "The power of accurate observation is commonly called cynicism by those who have not got

Re: [time-nuts] FE-5680A Year of Manufacture

> Le 27 mai 2016 à 22:10, Bob Camp a écrit : > > Hi > > Best guess is that the 0331 at the start is the date code. 31st week of 2003 > would > be it’s manufacture date. > > Bob > Bob’s guess fits with mine too. All between 0321 and 0345 >> On May 27, 2016, at 3:09 PM,

Re: [time-nuts] u-blox "naked" chips - anyone brave enough to try them?

Certainly cheap…. BUT On the ublox site there is a table indicating that the KT is a standard precision engine. On the same table, the UBX-M8030-KT-FT is required for timing: < https://www.u-blox.com/sites/default/files/GNSS-Chips_Linecard_%28UBX-13004716%29.pdf > <

Re: [time-nuts] Ublox Neo-6M time error.

> Le 1 juin 2016 à 03:20, Mark Sims a écrit : > > I had two machines running Lady Heather with the singing chime clock mode > enabled (that plays a chant from the Missa Assumpta on the quarter hours). > > One machine was connected to a Ublox Neo-6M receiver and another

Re: [time-nuts] Ublox Neo-6M time error.

Hi Mark, > Le 2 juin 2016 à 10:28, Mark Sims a écrit : > > The Ublox receivers do not have a message that outputs GPS time directly. > It's easiest to take the UTC time message and subtract the leapsecond offset > to get GPS time. The itow value in the NAV_TIMEGPS

Re: [time-nuts] Z3801 Update with VP-Oncore 8Ch receiver

I doubt that will work without going through another uc to do translation. I have tried using UT+ receivers in my Z3801A and they don't work even though they are plug compatible. If someone has a recording of the data sreams from a standard Z3801A then it could be done. Would it be worth the

Re: [time-nuts] 58503A does not track

> Le 28 janv. 2016 à 07:37, claude...@aliceadsl.fr a écrit : > > Thanks for your reply > > I don't think it's a computer problem because I can see the GPS is not locked > when I compare the 10 MHz output with a Rubidium. > By the way, I don't use software but the screen command under Linux. >

Re: [time-nuts] Cheap LEA-6T [was: Re: Precise Time transfer and relative position over ashort baseline]

I tried one of these back in 2014 and found it not hitting specs. 2.16V on 1PPS instead of 3.3V. It died after a few months. Your milage may be better, but they are are old versions so there may be a systemic issue. > Le 11 avr. 2016 à 20:47, Scott Newell a écrit :

[time-nuts] Unix equivalent of Windows RbMon app for PRS10 monitoring

Before I start re-inventing wheels, has anyone got a non-graphical interface to the PRS10. Specifically, I want to log over time any/all the data points seen on the RbMon output, though it would be nice to have a curses version of the window. I have got a sniffer on the link and interaction

Re: [time-nuts] Difference between Oncore models

> Le 16 mars 2016 à 12:03, Joseph Gray a écrit : > > I understand that the Oncore GPS in the Lucent units is a newer module > that tracks eight satellites, vs the older Oncore in the Z3801A that > only tracks six satellites. > > I decided to do a re-survey with my Z3801A that

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

> Le 27 mars 2016 à 00:56, dikshie a écrit : > > On Fri, Mar 4, 2016 at 10:41 AM, Tom Van Baak > wrote: >> There was just a CNN link to this timely video of Judah Levine: >> >> Just Call Him the 'Time Lord' >>

Re: [time-nuts] PRS 10 and serial port communication

> Le 8 mars 2016 à 01:56, Philip Zahariev via time-nuts a > écrit : > > Hello group, > > I have significant progress with generator. And there were new questions :-) > Frequency was little bit higher than 10 MHz - after correction of PLL > constants SP and MO now is just

Re: [time-nuts] PRS 10 and serial port communication

You could try « RC 1 » blind. That will reset the EEPROM values to factory settings. However I do not see any settings for serial rates, so it may not help. >From your oscilloscope, it should be possible to determine stop/start and baud >rate and decode the binary data. I have done this in the

Re: [time-nuts] PRS10 and missing serail port communication

> Le 2 mars 2016 à 15:50, Philip Zahariev via time-nuts a > écrit : > > Hello group, > > Recently obtained from eBay PRS10 marked as no-lock. Of course my first task > was to open device and see what is current state of lamp, capacitor and etc. > surrounding parts. My

Re: [time-nuts] Holdover recovery

> Le 4 avr. 2016 à 05:39, Hal Murray a écrit : > > > Has anybody studied what happens when a GPSDO comes out of holdover? Has > anybody seen any specs? I don't think I have. > > I think you have a choice of quick recovery for time or frequency, but you > can't get

Re: [time-nuts] SE880 GPSDO

> > Assuming that you have an amateur radio license, you could use a > well located central station to transmit a CW signal in the 70cm or > 23cm band. There should be some effort put into this station > to make it stable (eg by using a good rubidium as frequency source, > or even an ensemble)

Re: [time-nuts] Raspberry PI 3 NTP server with GPS time data.

> Le 24 avr. 2016 à 20:51, jan hugo prins a écrit : > > Hi, > > To get a more stable NTP source into our production network I have > started exprerimenting with a Raspberry PI 3 with a GPS head. GPS data > is coming in fine, but the time is jumping around like a wild horse.

Re: [time-nuts] help

> Le 2 mai 2016 à 03:14, Chris Albertson a écrit : > > On Sun, May 1, 2016 at 12:26 PM, Bill Baker via time-nuts < > time-nuts@febo.com> wrote: > >> My problem: I'd like some kind of off-the-shelf device that can take the >> time code and switch on or impulse

Re: [time-nuts] Leap second to be introduced at midnight UTC December 31 this year

> Le 21 juil. 2016 à 19:27, Tom Van Baak a écrit : > > Time to mention this again... > > If we adopted the LSEM (Leap Second Every Month) model then none of this > would be a problem. The idea is not to decide *if* there will be leap second, > but to force every month to

[time-nuts] NIST UT1 NTP server results

I have started a new thread for this just in case anyone wants to comment and added a link to the stats plot as the png got removed from the first post. This really has more to do with timescale distribution rather than leap seconds but the fact that NIST put together a UT1 NTP server in the

Re: [time-nuts] NIST UT1 NTP server results

> Le 23 juil. 2016 à 21:56, Tom Van Baak a écrit : > > To further clarify my question about which UTx timescale to use with NTP, or > if or how to interpolate the values I've attached two plots from IERS for the > past 60 days. > > BTW, notice last week we had another

Re: [time-nuts] NIST UT1 NTP server results

> Le 23 juil. 2016 à 00:23, John Hawkinson a écrit : > > I have to wonder if it's really such a great idea to have this > as an open NTP server without huge red flags that it is not UTC. > One could imagine it leading to big problems if some people started > syncing to it without

Re: [time-nuts] PRS10

> Le 11 août 2016 à 12:15, Martyn Smith a écrit : > > Hello, > > I have a strange fault on a PRS10. Wondered if anyone had seen it. > > I am running a PRS10 and at the same time monitoring its FC (the frequency > control value) and Status byte data values. > > So

Re: [time-nuts] Venus838LPx-T preliminary testing

> Le 9 août 2016 à 19:15, Mark Sims a écrit : > > Just checked mine... it's an 822A. They sell it as an '838... bastards... > I just ordered one of yours. My RS-232 GPS breakout board already has a > connector with Adafruit pinouts on it, so makes life easy. > To be

[time-nuts] Seiko watch "leap second enabled"

While I was googling for reports of other misbehaving GPS chips, I discovered the existence of the worlds first leap second enabled wrist watch. Seiko introduced the Astron models 8X53, 8X82, 7X52 which automatically check for a leap second on ……. « Seiko Astron enters the leap second data

Re: [time-nuts] Leap second to be introduced at midnight UTC December 31 this year

> Le 20 juil. 2016 à 22:10, Gary E. Miller a écrit : > > Yo Martin! > > On Wed, 20 Jul 2016 21:37:02 +0200 > Martin Burnicki wrote: > >> So when the GPS receiver always just *showed* information on the >> current UTC data set then this is OK.

Re: [time-nuts] GPS disciplined Mars clock

> Le 9 juil. 2016 à 17:33, Scott McGrath a écrit : > > The Venusian's are feeling left out …. I guess it is possible as there is an agreed prime meridian even though we cannot see the central peak in the crater Ariadne in the visible spectrum. > > Content by Scott >

Re: [time-nuts] GPS disciplined Mars clock

Calculating the local planetary time is fine for solid objects with an accepted (or proposed) prime meridian , but I don’t think this is possible with gaseous objects where there is no fixed feature. > Le 9 juil. 2016 à 18:23, Mark Sims a écrit : > > Do you have any

Re: [time-nuts] NIST UT1 NTP server results

Le 23 juil. 2016 à 01:21, Mike Cook <michael.c...@sfr.fr> a écrit : > > >> Le 23 juil. 2016 à 00:23, John Hawkinson <jh...@mit.edu> a écrit : >> >> I have to wonder if it's really such a great idea to have this >> as an open NTP server without huge red f

Re: [time-nuts] Cable length calibration

> Le 29 juin 2016 à 22:18, Poul-Henning Kamp a écrit : > > > In message <20160629192850.19c29406...@ip-64-139-1-69.sjc.megapath.net>, Hal > Mu > rray writes: > >>> At one point they were looking into making a GPS time receiver where the >>> cable length

Re: [time-nuts] purpose of time of day display units

Two reasons that come to mind are: Displaying distributed time to distant sites from some master. Readability at a distance. > Le 22 janv. 2017 à 07:31, Ruslan Nabioullin a écrit : > > Hi, looking at pictures of various time metrology equipment setups for best >

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

> Le 16 févr. 2017 à 13:05, Mike Cook <michael.c...@sfr.fr> a écrit : > > >> Le 16 févr. 2017 à 04:09, MLewis <mlewis...@rogers.com> a écrit : >> >> On 15/02/2017 1:17 PM, Chris Albertson wrote: >>> Why set up a dedicated NTP server if you only h

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

>> >> Best practice today is to have two independent NTP servers and two GPS >> receivers. It is best if these are independent as you can make them, >> different buildings if you can. I would even use different brands of >> hardware to protect against a bug. This is an often missed

Re: [time-nuts] ``direct'' RS-232 vs. RS-232 via USB vs. PPS decoding cards

> Le 16 févr. 2017 à 04:09, MLewis a écrit : > > On 15/02/2017 1:17 PM, Chris Albertson wrote: >> Why set up a dedicated NTP server if you only have two computers that will >> use it? ... You could save some money and just run NTP on the two computers. >> ... NTP is

Re: [time-nuts] Looking for GPS module (Exactime ET6000/Datum 9390-6000)

If your friends don’t have a CM3 spare, there is one on eBay item 141712522709. It might be worth pulling the GPS part and testing it stand alone as there have been numerous week number roll over problems surfacing. If that is the case for yours then a replacement gets you nowhere. > Le 16

[time-nuts] Lady Heather's latest bells and whistles

Hi Mark. > Le 14 sept. 2016 à 03:51, Mark Sims a écrit : > > Okee dokeee... here it is. Not much difference. The initial step is > smaller, but it still spikes. After that things are pretty much the same. > After it cool down, I'm doing another run with the

Re: [time-nuts] Need Time Help

Given the number of replies to the OP, most pointed but others drifting OT, it is remarkable that there has been no comment or feedback from Larry. He has slung his bottle and gone away it seems. > Le 5 oct. 2016 à 23:58, Bob Camp a écrit : > > Hi > > Given that this is for

[time-nuts] disappearance of NIST UT1 time service

Hi, Does anyone know what happened to the NIST UT1 time service managed by Dr. Judah Levine? I lost contact with the server ut1-time.colorado.edu on the 24th this month at 20:15 UTC and there has been no response to NTP requests since. I mailed Judah to find out what happened but have not

Re: [time-nuts] PC clock generator without 14.318MHz

> Le 18 oct. 2016 à 16:53, Vladimir Smotlacha a écrit : > > > > Hello, > > I have operated own NTP servers with stable system clock for many years. The > principle is quite simple - I replaced 14.318 MHz quartz with OCXO based > circuit. Now I have to build few more servers

Re: [time-nuts] A (slightly) different apu2 question

Sorry if this is a dup. I had accidentally left the « SPAM » prefix on my first reply. > Le 17 nov. 2016 à 00:24, Jay Grizzard a écrit : > > So there's been a lot of discussion going around on how to do GPS foo on > pcengines.ch's apu2 hardware, but there's one

Re: [time-nuts] How can I measure GPS Antenna quality?

> Le 21 nov. 2016 à 02:57, Tom Van Baak a écrit : > > Hi Hal, > > That's a very sensible question. I've often wondered the same, but I'm > embarrassed to say I have never done a thorough job with it. You know the > constellation repeats approximately every 24 hours so

Re: [time-nuts] leontp offset

> Le 20 oct. 2016 à 22:06, Hal Murray a écrit : > > >> full disclosure: there were a couple of outlier external clocks I threw out, >> one with a 38 ms offset and the other with a 112 ms offset). > > That's not uncommon. It happens more often when the server is

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

> Le 3 nov. 2016 à 16:41, Giuseppe Marullo a écrit : > >> Have you tried the stock Thunderbolt? > > Not yet, > > package is coming from China, like twenty days+ waiting before getting it. > > Supposing the box will only make the serial port(s) available, where I could >

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

I have Version 2.01.0 - appears tp be a beta from 2013. I don’t know if it’s the best though. > Le 4 nov. 2016 à 02:56, Giuseppe Marullo a écrit : > > Mike, > > thank you. > > Found several versions on the net, which one is the "best" version to try? > > TIA. > >

Re: [time-nuts] Knights OCXO: Now in plain text...

> Le 8 déc. 2016 à 10:40, Matthias Jelen a écrit : > > Hello! > > 3rd try, I was using a webmailer which changed it defaults to html. Thanks > for the hint Mike! > > I got an OCXO from a piece of scrapped Agilent equipment. > > The OCXO has a label on it saying: >

Re: [time-nuts] Temperature weirdness with Thunderbolt & Lady Heather 5

Hi Peter, I also have a T-Bolt monitored by LH5 but am not seeing any glitches like yours. No clear idea what may be the root cause, but from your screen dump all the metrics are affected so it is not likely to be just a failing temp sensor. Maybe something global such as power cleanliness.

Re: [time-nuts] 5ms glitch on WAN ntp server peerstats at around 01:00 UTC today

Hi Dan, Everything seems pretty much back to normal this morning. I’ll have to take another look at yesterdays data to see when that happened. I’ll add a suitable graph to my site as an example of wide area routing induced offset glitches. Mike > Le 11 janv. 2017 à 00:14, d...@drown.org a écrit

[time-nuts] strange leap second failures

Hi, I guess you have all seen some servers that didn’t make it. I detected 6 including one at the paris observatory . Some were corrected or corrected themselves and some just stopped serving. There must be hundreds out there :-( ___ time-nuts

Re: [time-nuts] new year crashes

> Le 1 janv. 2017 à 15:13, David Malone a écrit : > > On Sun, Jan 01, 2017 at 12:54:19PM +, Adrian Godwin wrote: >> I wonder if someone wasn't ready for their extra second : > >> http://www.bbc.co.uk/news/uk-38482746 > > If, as the article says, they had to record

[time-nuts] 5ms glitch on WAN ntp server peerstats at around 01:00 UTC today

Hi, I saw 5ms offset jumps on most of the internet ntp servers that I am using at about 01:00UTC today. The servers are as widespread as NIST Boulder, NPL UK, Hungary, Scotland, Spain, France, Czechoslovakia . Most but not all pool provided servers were not affected . It was not my ISPs or

Re: [time-nuts] Ublox M8N - have I a XO or TCXO ?

> Le 21 déc. 2016 à 00:08, Kiwi Geoff a écrit : > > Hello All - and Seasons Greetings, > > One of the advantages of the recent hobby drone phenomena - it has > brought to the market a lot of low cost GNSS modules that are > lightweight for drone flight control systems. Those

Re: [time-nuts] TAPR Oncore M12+ kit

I would like to add mention of the M12+ interface board that Tom Wimmenhove offered on this list. I am using them to lock PRS10s. Very happy with it. Here is a link to some of his performance measurements. < http://tomwimmenhove.com/otherstuff/Oncore/ > > Le 28 mars 2017 à 20:47, Gregory Beat

Re: [time-nuts] Bye-Bye Crystals

> Le 15 mars 2017 à 08:11, Gilles Clement a écrit : > > Hi, > So what is the « best » design for DIY a high stability OCVXO ? > I am looking after one, needed for an exotic frequency : 5184kHZ Crystals have existed for this frequency. A quick scan of the bay threw

Re: [time-nuts] Smart Phone time display accuracy...?

Mine is a little over a second slow. Good enough for a date but not for any sort of nut. > Le 16 mars 2017 à 03:32, Mike Baker a écrit : > > Hello, Time-nutters-- > > Any thoughts on what the likely accuracy of smart phone time > displays might be? I am thinking that

Re: [time-nuts] Conversion of Stanford PRS10 to RS-232 Communication

The word jumper may be misleading. Soldering/de-solderig of components required. In Appendix 19, "Configuration notes » there is an explanation of how to alter the function of pins 4,5,7. > Le 3 avr. 2017 à 22:05, Philip Jackson a écrit : > > I understand that the

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

Hi, I was running Tboltmon as the rollover occurred and did not see any phase shift. Old type Tbolt firmware 3.0 Maybe your phase offset was due to your Tbolt being in survey mode and its apparent position shifted . Mike > Le 30 juil. 2017 à 02:16, Tom Van Baak a

[time-nuts] Clocking on

Hi, all, You may find this interesting. « Clocking on » a BBC4 programme on the social and industrial impact of time through the ages at < http://www.bbc.co.uk/programmes/b08rtldq > . "The power of accurate observation is commonly called cynicism by those who have not got it. » George

Re: [time-nuts] Happy Palindromic Days, m-dd-yyyy format

> Le 12 juil. 2017 à 22:02, Gregory Beat a écrit : > > A palindrome is a word, phrase, number, or other sequence of characters which > reads the same backward as forward, such as the words: madam, racecar, or > tattarrattat. > > Palindrome Days start with July 10, through

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

> Le 28 juil. 2017 à 17:36, Dave B via time-nuts a écrit : > > Interesting. > > What about NTPD implementations, when using a TB as the reference time > source? Does that handle the week count roll over as well? If that was > added, from what version? Which driver are

Re: [time-nuts] Trimble Thunderbolt no longer determines the correct date

ve more info as I sift through > several TBolt's. > > /tvb > > > - Original Message - > From: "Mike Cook" <michael.c...@sfr.fr> > To: "Tom Van Baak" <t...@leapsecond.com>; "Discussion of precise time and > frequency meas

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