Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

> I've not been following this discussion too closely, but were the nav > solutions from the GPS steady and continuous during the event (that is, > was just a time discontinuity). I'm guessing that since the problem was > only in the "how to convert from GPS to UTC" parameters that the nav >

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

On 1/27/16 11:46 PM, Magnus Danielson wrote: Fellow time-nuts, Here is the official statement. Cheers, Magnus I know we're all time-nuts here and not position-nuts. The thing in the statement that was intriguing was about GPS guided munitions. 13.7 microseconds is about 4.5 km. I've

[time-nuts] Z3801 Newbie Question

OK My Z3801A came out of mothballs after 15 years in controlled storage and appears to be behaving. now I am curious as to what I am seeing First I am not truly a "time" nut ( I am semi retired and have not worn a watch since October 12th 2008 :-) ). I am probably more of "frequency" nut .

Re: [time-nuts] Newbie questions

Hi > On Jan 27, 2016, at 7:56 PM, time...@metachaos.net wrote: > > Bob, et. al., > > Thanks for the advice and information. That has helped a lot in closing some > holes and gives me a lot to consider. I am continuing to research and learn, > this is not a short term project as in building it

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

Hi I suspect that a few connectors get added to that list. On the 5335 there is a *lot* more on the board. So, you need to source a handful of 1970’s era switches and connectors. The connectors (obviously) need to mate with whatever is on the other side. That could be pretty easy. It could

Re: [time-nuts] Z3801 misbehaving

John wrote: Tonight I got a GPS Lock light. Bravo! Patience is a virtue. ;-) Remember this when it comes to all the other metrics -- settling to good stability, in particular, which may take quite a while (weeks to months) since the OCXO has been off for so long. My suggestion is to

Re: [time-nuts] Z3801 Newbie Question

Dave, Plot the #SV tracked and signal strength(s) over a couple of days. See if your once or twice a day glitches correlate to periods of low reception. To see what the reception of other z3801a owners look like: http://www.realhamradio.com/GPS_websites_list.htm You may even want to try a

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

Jim, On 01/28/2016 01:22 PM, jimlux wrote: On 1/27/16 11:46 PM, Magnus Danielson wrote: Fellow time-nuts, Here is the official statement. Cheers, Magnus I know we're all time-nuts here and not position-nuts. The thing in the statement that was intriguing was about GPS guided munitions.

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

Tom, On 01/28/2016 04:58 PM, Tom Van Baak wrote: I've not been following this discussion too closely, but were the nav solutions from the GPS steady and continuous during the event (that is, was just a time discontinuity). I'm guessing that since the problem was only in the "how to convert

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

Poul-Henning, On 01/28/2016 11:27 PM, Poul-Henning Kamp wrote: In message <56aa6aa2.6050...@rubidium.dyndns.org>, Magnus Danielson writes: And, did this "ripple in the force" cause all those NTP synchronized clocks to hiccup (if a NTP ticker is UTC driven vs GPS driven) NTP bumping

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

In message <56aa6aa2.6050...@rubidium.dyndns.org>, Magnus Danielson writes: >> And, did this "ripple in the force" cause all those NTP synchronized >> clocks to hiccup (if a NTP ticker is UTC driven vs GPS driven) > >NTP bumping around 13,7 us... I'm not sure I *really* care for most

Re: [time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

What was interesting was in addition to the bump was that the Garmin nav receiver in the car was unable to get a fix until it did a full cold start Content by Scott Typos by Siri > On Jan 28, 2016, at 5:37 PM, Magnus Danielson > wrote: > > Poul-Henning, > >> On

Re: [time-nuts] Tom Van Baak: a conversation about GPS timing

Hi Tani, > Q: Why is there an timing offset of 20ns average between identical > commercial off-the-shelf GPS modules? Without testing I can't tell if 20 ns is normal for your receiver or not. It doesn't seem totally out of the ordinary but some investigation would be in order in case part of

Re: [time-nuts] GPS jumps of -13.7 us?

This may be a dumb question, but I am new to using LadyHeather with my Thunderbolt (previously it had been slaved to driving a clock display but that broke, which made me get around to installing a serial card in my linux box)... Are these "events" something I should be able to see in LH? If so

[time-nuts] Cheap hot air station

I'm partial to the Youyue 858d. Not because it is particularly good, but because there is some nice open-source firmware for it. It's also rather inexpensive (around $40). Note that there are a lot makers of -858d stations. Not all use the AVR chip that the open source firmware runs

[time-nuts] GPS PRN 32

This just came in Air Force Official Press Release - GPS Ground System Anomaly On 26 January at 12:49 a.m. MST, the 2nd Space Operations Squadron at the 50th Space Wing, Schriever Air Force Base, Colo., verified users were experiencing GPS timing issues. Further investigation revealed an issue

Re: [time-nuts] GPS jumps of -13.7 us?

brian wrote: > This may be a dumb question, but I am new to using LadyHeather with my > Thunderbolt (previously it had been slaved to driving a clock display > but that broke, which made me get around to installing a serial card in > my linux box)... > > Are these "events" something I should be

[time-nuts] Fwd: CGSIC: FW: Official Press Release - GPS Ground System Anomaly

Fellow time-nuts, Here is the official statement. Cheers, Magnus Forwarded Message Subject: CGSIC: FW: Official Press Release - GPS Ground System Anomaly Date: Thu, 28 Jan 2016 01:13:13 + From: Civil Global Positioning System Service Interface Committee (CGSIC)

Re: [time-nuts] GPS jumps of -13.7 us?

Paul Boven schrieb: > Hi everyone, > > Has anyone else seen GPS time jump by -13.7 usec today? > I just heard from several geographically quite distributed radio > observatories that they have seen their GPS receiver(s) jump compared to > their in-house standards. We have now received an

Re: [time-nuts] GPS PRN 32

Magnus Danielson wrote: > Charles, > > Considering how the UTC parameters (IS-GPS-200H, Table 20-IX and section > 20.3.3.5.2.4) got upset for some of the SVNs, the correction from GPS > time (as corrected for that PRN) into UTC got a shift of almost 13,7 us. > As a GPS receiver receives

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] GPS jumps of -13.7 us?

Magnus Danielson wrote: > It's interesting to see how consistent these errors are. > On the other hand, it is interesting to see how it varies even for the > same PRN. Look at how PRN 09 varies between +0.002 us and -13.696 us. Hm, I think basically it doesn't vary. We fortunately just saw the

Re: [time-nuts] GPS jumps of -13.7 us? (TBolt data)

I have a hack patch in my copy of the TBolt driver for ntpd. 01-21T21:42:15 ntpd[7559]: TBolt 1 Other: -2.79397e-09 -8.88178e-15 01-22T17:21:08 ntpd[7559]: TBolt 1 Other: -4.65661e-09 -1.06581e-14 01-23T15:13:38 ntpd[7559]: TBolt 1 Other: -6.51926e-09 -1.15463e-14 01-24T17:08:37 ntpd[7559]: TBolt

Re: [time-nuts] Z3801 Newbie Question

Please describe your Antenna setup and location. How much of the sky can it see, in which directions. Which directions are blocked for direct line of sight, and must depend on reflections from nearby buildings or objects? --- Graham == On Thu, Jan 28, 2016 at 11:25 AM, Tom Van Baak

Re: [time-nuts] Z3801 misbehaving

Tonight I got a GPS Lock light. Bravo! ___ 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] JLT M12M upgrade?

I am considering the M12M upgrade board for my JLT Fury. Could someone who has done this upgrade mind posting some comments or a brief review. Thanks, Mark N2MD ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to