Re: [time-nuts] GPS altitude somewhat wrong?

2016-06-09 Thread Gary E. Miller
k outta any Garmin. CEP(95) of 1.5 meters over 1,000 seconds. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpZjysP8lH0L.pgp Description: OpenPGP di

Re: [time-nuts] GPS altitude somewhat wrong?

2016-06-08 Thread Gary E. Miller
Depends. :-) RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpUciMmwVM5q.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] Satellites in the Sky

2016-06-07 Thread Gary E. Miller
xgps also does this, just no 'world' backgrounnd. > Put your GPS module in NMEA mode. Not required for gpsd, it works in NMEA, u-blox binary mode, or mixed mode. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite

Re: [time-nuts] does anybody have software for the DeLorme LT-20 Earthmate?

2016-06-06 Thread Gary E. Miller
thMate versions. BTW, the Ubuntu binary for gpsd is not so good, grab the source from upstream. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] does anybody have software for the DeLorme LT-20 Earthmate?

2016-06-06 Thread Gary E. Miller
before it will output anything, a somewhat > unhappy circumstance from a testing viewpoint. Delerme shipd many different types of totally incompatible GPS. Got a model number, a picture? RGDS GARY ----------- Gary E. Miller Rellim 109

Re: [time-nuts] does anybody have software for the DeLorme LT-20 Earthmate?

2016-06-06 Thread Gary E. Miller
ndex.php?/topic/18311-lt-20-serial-output/ gpsd sends 'EARTHA" to the LT-20 and then the LT-20 outputs plain NMEA. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@relli

Re: [time-nuts] GPS altitude somewhat wrong?

2016-06-09 Thread Gary E. Miller
me for me to re-flash. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpTOjZHJhMjG.pgp Description: OpenPGP digital signature _

Re: [time-nuts] GPS altitude somewhat wrong?

2016-06-09 Thread Gary E. Miller
designed for survey work. So that mode is selectable. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpAFyTGfe3zx.pg

Re: [time-nuts] RS232 / GPS interface/prototyping board

2016-06-14 Thread Gary E. Miller
. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpRJlRF01t1b.pgp Description: OpenPGP digital signature _

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

2016-05-31 Thread Gary E. Miller
old start. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpbcuWgOxO_C.pgp Description: OpenPGP digital

Re: [time-nuts] RS232 / GPS interface/prototyping board

2016-06-14 Thread Gary E. Miller
arket. Once again, sorry to start the confusion... RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpf_Y70qxVfs.pgp Desc

Re: [time-nuts] Impact of GPS antenna height measurments

2016-06-28 Thread Gary E. Miller
a factor of 4 I'm happy. :-) Almost all people when they hear 73 nanoSec, which is hardly more than 2 sigma of a good GPS, they say "Never Mind". RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Ben

Re: [time-nuts] GPS receiver time message offsets to 1PPS

2016-07-25 Thread Gary E. Miller
receiver sends > the timing message after the 1PPS pulse that it describes. The table > also shows the standard deviation of the message arrival times. Nicely done! Real data! RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wil

Re: [time-nuts] GPS receiver time message offsets to 1PPS (updated)

2016-07-28 Thread Gary E. Miller
? RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpZqrv7x2Rpb.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-n

Re: [time-nuts] Venus838LPx-T opinions?

2016-07-23 Thread Gary E. Miller
at now. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpWdhRBZxD1V.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-nuts@febo.

Re: [time-nuts] Venus838LPx-T opinions?

2016-07-24 Thread Gary E. Miller
efore designing their protocols... RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpCkgpKmK11P.pgp Description: OpenPGP di

Re: [time-nuts] Histogram of T2 arrival times

2016-07-29 Thread Gary E. Miller
gs. How do you know that? RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpIvV14vS3dL.pgp Description: OpenPGP di

Re: [time-nuts] Histogram of T2 arrival times

2016-07-29 Thread Gary E. Miller
er to XTAL temp. > You would really like to measure the temperature at the crystal. I > haven't gone that far. Yup. I have some USB thermometers that are good for such things. RGDS GARY --- Gary E. Miller Rellim 109

Re: [time-nuts] Histogram of T2 arrival times

2016-07-29 Thread Gary E. Miller
ou'll never find the same model when you reorder. This one has the same model number as one of mine, totally different case: http://pcsensor.com/usb-thermometer/temper2.html RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilm

Re: [time-nuts] Adafruit Ultimate GPS timing message arrival times

2016-08-01 Thread Gary E. Miller
------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpJmQaMv4tGe.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe,

Re: [time-nuts] GPS for Nixie Clock

2016-07-13 Thread Gary E. Miller
riants. Likely all you would need is to connect and then parse the PPS sentence (TOFF): That looks like this: {"class":"TOFF","device":"GPS0","real_sec":1428001514, "real_nsec":100,"clock_sec":1428001513,"clock_nsec"

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

2016-07-20 Thread Gary E. Miller
o NTPsec devel folks. Time to 'Name and Shame". RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp02nwNI62MY.pgp Descri

Re: [time-nuts] GPS message jitter (preliminary results)

2016-07-18 Thread Gary E. Miller
w days of solid performence the USB serial time may shift 1/1024th of a second and stay at this new stable point. You will find when mearusing the PPS that the Serial/USB difference is much larger. Maybe 1,000x or more. RGDS GARY -------

Re: [time-nuts] Allan Deviation recipe?

2016-07-18 Thread Gary E. Miller
t, and help the rest of the NTPsec team see it as well. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpSe9AaAM25o

[time-nuts] ✘Allan Deviation recipe?

2016-07-18 Thread Gary E. Miller
--- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp9xQ0N_ndx7.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time

Re: [time-nuts] Allan Deviation recipe?

2016-07-19 Thread Gary E. Miller
? Somewhat wrong? Once I get this packaged up I'll have lots more similar graphs. RGDS GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpJW1ithaaXi.pgp

Re: [time-nuts] Allan Deviation recipe?

2016-07-19 Thread Gary E. Miller
ev.png Some weird things in there... RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpDYcKG8qRzN.pgp Description: OpenPGP digital signature ___

Re: [time-nuts] GPS message jitter (was GPS for Nixie Clock)

2016-07-19 Thread Gary E. Miller
ht out in different ways. In practice, there is often no advantage to the binary over the NMEA when gpsd is done with it. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.

Re: [time-nuts] Allan Deviation recipe?

2016-07-19 Thread Gary E. Miller
. Totally unexpected. Semi raw data for all three is here: https://rellim.com/graphs/ https://pi2.rellim.com/ https://pi3.rellim.com/ RGDS GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend

Re: [time-nuts] Allan Deviation recipe?

2016-07-19 Thread Gary E. Miller
ding questions on how to really model NTP time served over real networks. So using the system clock, disciplined by PPS, will be a good place to measure that. If I could get a real good PCI clock (that I could afford) then that could be the reference for the PPS, ntpd, and/or system clock. RGDS GARY

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

2016-07-20 Thread Gary E. Miller
short bit of the month. That might be worth doing too. I'm sure something else will crop up before 2017. If a giant asteroid hits earth, and we need a negative leap second in March, there will be a lot of urgent patching to do. RGDS GARY

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

2016-07-19 Thread Gary E. Miller
; code. Code and test and document for positive and negative leap > seconds equally. Got a reference for that? I know many people that will insist otherwise. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Av

Re: [time-nuts] GPS for Nixie Clock

2016-07-15 Thread Gary E. Miller
r is just under +/- 150 ms: https://rellim.com/graphs/week/ YMMV. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpiGR_dzzMMN.

Re: [time-nuts] Getting ntpd to work with Garmin LVC-18x and Ubuntu 16.04..

2016-07-16 Thread Gary E. Miller
S GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpPw8xUxlypH.pgp Description: OpenPGP digital signature ___ tim

Re: [time-nuts] Getting ntpd to work with Garmin LVC-18x and Ubuntu 16.04..

2016-07-16 Thread Gary E. Miller
gpsd. Only one of ntpd and gpsd should use the serial port at the same time. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp8d0ELyFLdu

Re: [time-nuts] Getting ntpd to work with Garmin LVC-18x and Ubuntu 16.04..

2016-07-16 Thread Gary E. Miller
pretty much have everything on the network sync with it.. > > The PPS stuff on Linux needs some magic setup. You need to run > something like: Or use gpsd and just let gpsd do the magic. RGDS GARY ------- Gary E. Miller Re

Re: [time-nuts] Impact of GPS antenna height measurments

2016-06-27 Thread Gary E. Miller
relevant. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp8SA3_RRGti.pgp Description: OpenPGP digital signature ___ time-nuts mail

Re: [time-nuts] GPS antenna selection — lightning

2016-08-05 Thread Gary E. Miller
common. So indoor surge protectors can also be useful. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp5oShWJ4R

Re: [time-nuts] Cable length calibration

2016-06-29 Thread Gary E. Miller
ault-finder-powerbt-bridge-tap RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpLgPLKlHCud.pgp Description: OpenPG

Re: [time-nuts] Cable length calibration

2016-06-29 Thread Gary E. Miller
live ethernet cables, so it can't be too harsh. A real good TDR can shouw you every tight bend in a cable. Or buy a tape measure. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 9770

Re: [time-nuts] Cable length calibration

2016-06-29 Thread Gary E. Miller
hat? TDR. The GPS already sends a voltage down the cable to power the antenna. Send a sharp down the cable and see when the reflection comes back. Even some of my cheap managed ethernet switches can do that. RGDS GARY ------- G

Re: [time-nuts] eLoran is up and operating. Looking good

2017-02-07 Thread Gary E. Miller
may make. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you

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

2017-02-16 Thread Gary E. Miller
ose sat lock, or lep second, or UTC offset now and then. Best practice is to have at least 3 other network chimers configured. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim

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

2017-02-13 Thread Gary E. Miller
an get to 1 micro second. On a RasPi using GPIO you can get to 500 nano second. Data available on request, but better on the de...@ntpsec.org list. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E,

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

2017-02-16 Thread Gary E. Miller
zed > >> for it). > > But PTP requires special hardware. You may not have this. No, PTP works optimally with special hardware, it can work with any ethernet port. I will give you that software mode PTP is no more accurate than plain NTPv4. RGDS GARY --

Re: [time-nuts] Hobbyist grade or homebrew temperature testing chamber?

2016-09-05 Thread Gary E. Miller
tartification. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpL68bzJ6Wl8.pgp Description: OpenPGP digital signature ___ time-nuts mailing l

Re: [time-nuts] HP-105B Battery Replacement?

2016-09-15 Thread Gary E. Miller
ad a problem with any version of CyberPower. Just be sure that everything you need to stay up is on a UPS, and that they are well within their load rating. I can post pictures if anyone wants. RGDS GARY ------- Gary E. Miller R

Re: [time-nuts] Need Time Help

2016-10-05 Thread Gary E. Miller
perfect one. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpf6Fw_gOABQ.pgp Description: OpenPGP digit

Re: [time-nuts] Need Time Help

2016-10-05 Thread Gary E. Miller
gt; > Is there another way to get computer system time set from a GPS > receiver other than NTP? gpsd. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541

Re: [time-nuts] HP-105B Battery Replacement?

2016-09-16 Thread Gary E. Miller
the batteries all the time. The transfer glitch can be quite large and affect the load. So the float type UPS tends to give smoother power more of the time. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, B

Re: [time-nuts] How to get PPS from ublox mini-PCI GPS to APU2 SoC serial port for ntpd

2016-11-08 Thread Gary E. Miller
232 ports will work with 5V, some not, and others will be flakey. You want something like this: https://www.sparkfun.com/products/8780 RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 9

Re: [time-nuts] How to get PPS from ublox mini-PCI GPS to APU2 SoC serial port for ntpd

2016-11-08 Thread Gary E. Miller
https://www.sparkfun.com/products/11189 I admit to not spending a lot of time on my suggestion. Yours may well be better. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@

Re: [time-nuts] How to get PPS from ublox mini-PCI GPS to APU2 SoC serial port for ntpd

2016-11-10 Thread Gary E. Miller
S GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp14VrfFkEHX.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -

Re: [time-nuts] Linux PPS clues?

2016-10-20 Thread Gary E. Miller
06 µs Or see a lot more live graphs here: https://pi4.rellim.com/day/ RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpxhRJtHmnX_.pg

Re: [time-nuts] Linux PPS clues?

2016-10-20 Thread Gary E. Miller
2 µs. Better than 5.5 µs for 98% of the time. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpFo77AsTbgA.pgp Description: OpenPGP

Re: [time-nuts] Linux PPS clues?

2016-10-21 Thread Gary E. Miller
esst case. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpQftaPz5GfK.pgp Description: OpenPGP digital signature ___

Re: [time-nuts] leontp offset

2016-10-21 Thread Gary E. Miller
seconds, or less? RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp9rt2cKIrDk.pgp Description: OpenPGP digital signature ___ time-nuts mailin

Re: [time-nuts] Linux PPS clues?

2016-10-21 Thread Gary E. Miller
so well designed the results > might to 10X worse not just 2x worse. Once can always do things badly. :-) RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 3

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

2016-11-21 Thread Gary E. Miller
RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgp7LlWz_GQ1T.pgp Description: OpenPGP digital signature ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] Survey plot as art.

2017-01-09 Thread Gary E. Miller
ograms I'm using for comparison as well. But I agree, moving off topic for time-nuts. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] Survey plot as art.

2017-01-09 Thread Gary E. Miller
how the 3dB loss of the splitter affects thins. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? &qu

Re: [time-nuts] Survey plot as art.

2017-01-09 Thread Gary E. Miller
Adafruit works better for me indoors with an external antenna. I find the uFL a pain for lab use. The Uputronics have no internal antenna and an SMA connector. Plus it has a u-Blox 8. But, to be fair, both are far beyond any practical needs I have. YMMV. RGDS GARY --

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
Yo Poul-Henning! On Wed, 30 Nov 2016 21:01:44 + "Poul-Henning Kamp" <p...@phk.freebsd.dk> wrote: > > In message <20161130125857.7229b...@spidey.rellim.com>, "Gary E. > Miller" writes : > > >Not 'odd'. Fully specified in the RFC. A

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
s is not the first time Google has done this, and certainly will not be the last. It had bad consequences last time and they did not learn from that. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
pport an RFC to mark the type a time an chimer is servings. Not only smeared and UTC, but also TAI, UT, UT0, UT1, UT2, ET, TDT, TDB, TT, TCG, TCB, GPS, etc... RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Be

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
cket format consists of three components: the header itself, one or more optional extension fields, and an optional message authentication code (MAC). " RGDS GARY --- Gary E. Miller Rellim 109 NW Wilmington Ave., Su

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpMImyMn51mm.pgp Description: OpenPGP digital signature _

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
Yo Poul-Henning! On Wed, 30 Nov 2016 20:42:17 + "Poul-Henning Kamp" <p...@phk.freebsd.dk> wrote: > > In message <20161130123506.63853...@spidey.rellim.com>, "Gary E. > Miller" writes : > > >Not true. NTP has provision for arbitrrar

Re: [time-nuts] Best Chance GPS module

2016-11-30 Thread Gary E. Miller
TO that does exactly what you want. You can download a git copy of it: https://gitlab.com/NTPsec/stratum-1-microserver-howto I have 4 RasPis with various GPS attached, and an Orange Pi to add soon. Works great. RGDS GARY ------- Ga

Re: [time-nuts] Google public NTP service

2016-11-30 Thread Gary E. Miller
he LEAPSECS list, and not > here on time-nuts. I'll continue to suggest this move to de...@ntpsec.org. There are many people on the NTP IETF committes there. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suit

Re: [time-nuts] Temperature (environmental) sensors

2017-01-05 Thread Gary E. Miller
companies make TEMPer's so YMMV. But hard to go wrong for $9. RGDS Veritas liberabit vos GARY Quid est veritas? --- Gary E

Re: [time-nuts] Temperature (environmental) sensors

2017-01-05 Thread Gary E. Miller
eritas liberabit vos GARY Quid est veritas? ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgpPpRdQ_QkQ5.pgp Description:

Re: [time-nuts] Temperature (environmental) sensors

2017-01-05 Thread Gary E. Miller
Quid est veritas? ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 pgppsRagnxsvI.pgp Description: OpenPGP digital signature ___

Re: [time-nuts] Survey plot as art.

2017-01-07 Thread Gary E. Miller
s in the sky their signal may be bouncing off a nearby steel building and into your antenna. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] Survey plot as art.

2017-01-07 Thread Gary E. Miller
a splitter. Ah. Got it. Thank you. Same model GPS? RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Qui

Re: [time-nuts] Survey plot as art.

2017-01-07 Thread Gary E. Miller
24 plot from a stationary GlobalSat MR-350P I find these plots very useful when comparing GPS models. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1

Re: [time-nuts] Survey plot as art.

2017-01-07 Thread Gary E. Miller
, very differently looking plots. I'll admit to never generating plots over the same time interval, I'll start a 24 hour test of two GPS right now. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend,

Re: [time-nuts] Survey plot as art.

2017-01-07 Thread Gary E. Miller
ultipath rejection. And I can easily change my GPS, but chaning my geoplogy is a lot harder. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] Survey plot as art.

2017-01-08 Thread Gary E. Miller
. To bring this back to time-nuttery, when the TDOP hit 32.6 I can see a 2 micro Second spike in NTP jitter. So for that small period in time my Raspberry Pi clock was more stable than my PPS. RGDS GARY --- Gary E. Miller Rellim

Re: [time-nuts] Survey plot as art.

2017-01-08 Thread Gary E. Miller
part of the gpsd package, feel free to do yooou own plots. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. --

Re: [time-nuts] Survey plot as art.

2017-01-08 Thread Gary E. Miller
dafruit plot. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin pgphIZvf8Pj9

Re: [time-nuts] Survey plot as art.

2017-01-08 Thread Gary E. Miller
'm looking at. > > https://www.febo.com/pipermail/time-nuts/attachments/20170108/051ba89d/attachm > ent-0003.png Yup. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim

Re: [time-nuts] Four hour cycle in GPS NMEA jitter

2017-03-20 Thread Gary E. Miller
t-up.html RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure

Re: [time-nuts] WWVB & Eclipse

2017-07-14 Thread Gary E. Miller
n the gpsd RTCM and NTRIP code. Feel free to contact me off list if yuo think I can be helpful. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] Machining some aluminum help!

2017-07-28 Thread Gary E. Miller
st you get some real cutting fluid. The threads will be smoother. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos.

Re: [time-nuts] Network Time Foundation

2017-05-13 Thread Gary E. Miller
s being more activly worked on than NTP Classic and has many new features like ntpmon and ntpviz. It is readily available over git: https://www.ntpsec.org/ https://github.com/ntpsec/ntpsec RGDS GARY ------- Gary E. Miller Rellim 109 N

Re: [time-nuts] inexpensive, black box, GPS or NTP based TTL time capture?

2017-10-18 Thread Gary E. Miller
get a Raspberry Pi, a GPS HAT, and connect your input to a GPIO pin. Configure ntpd to log the real PPS and the input as another 'PPS'. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703

Re: [time-nuts] inexpensive, black box, GPS or NTP based TTL time capture?

2017-10-18 Thread Gary E. Miller
e the price of the desk it sits and the building it is in? RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t meas

Re: [time-nuts] accurate 60 hz reference chips/ckts

2017-12-16 Thread Gary E. Miller
igital clock. Once a day they manually get the AC clock to agree with the digital clocl. None of this is rocket science, don't use it for anything you need any accuracy for. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington A

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-02 Thread Gary E. Miller
3U I use that, and an incadescent light bulb, to stabilize my GPS and XO temps in my chamber. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-07 Thread Gary E. Miller
t to 100 nines, but if the transmitted GPS time to UTC time offset is said, by the US Military, to be only 90 ns (one sigma), then I'd listen to them when it matters. Time for us all to actually read the standard and argue what that means. RGDS GARY ---

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-07 Thread Gary E. Miller
d sat angles, the 3m location change will be trigonomically smaller for a sat at an angle. But, as I said, given that GPS only resolves to 90 ns, the worst case +/- 13 ns is noise. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wi

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-07 Thread Gary E. Miller
o the published GPS time resolution (IS_GPS_200H, page 54) of 90 ns. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberab

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-08 Thread Gary E. Miller
Yo jimlux! On Wed, 8 Nov 2017 06:33:19 -0800 jimlux <jim...@earthlink.net> wrote: > On 11/7/17 8:39 PM, Gary E. Miller wrote: > > Yo Tom! > > > > On Tue, 7 Nov 2017 20:16:09 -0800 > > "Tom Van Baak" <t...@leapsecond.com> wrote: > >

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-08 Thread Gary E. Miller
Yo Chris! On Wed, 8 Nov 2017 11:47:05 -0600 "Chris Caudle" <ch...@chriscaudle.org> wrote: > On Wed, November 8, 2017 10:45 am, Gary E. Miller wrote: > > No one here has yet bothered to address the issues I raise > > in Section 3.3.4. > > Sure they did. Wh

Re: [time-nuts] ublox NEO-M8T improved by insulated chamber?

2017-11-08 Thread Gary E. Miller
eep you busy for a few days. Yup, I will, thanks. Now when was the last time you did that absolute calibration of a GPS receiver to UTC? Can we see the results? RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite

Re: [time-nuts] Designing an embedded precision GPS time server

2017-10-25 Thread Gary E. Miller
the usual Linux stuff. > Anybody have any ideas or suggestions along these lines? This may be not time-nutty enough for here. Feel free to contact me off list. RGDS GARY ----------- Gary E. Miller Rellim 109 NW Wilmington A

Re: [time-nuts] Ublox Galileo/Beidou PRNs

2018-05-11 Thread Gary E. Miller
rDescrProtSpec_(UBX-13003221).pdf' Appendix A. It's ugly. Have a stiff drink first for courage. The future is gnsid:svid. Someday... RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR

[time-nuts] ✘NEO-M8N vs. NEO-M8T

2018-05-20 Thread Gary E. Miller
hours of data. The results were disappointing. See attached. For 8x the price all I see is a slightly flatter ADEV curve. The M8T also support raw data, so I can try to use it for RINEX files. RGDS GARY --- Gary E. Miller

Re: [time-nuts] ✘NEO-M8N vs. NEO-M8T

2018-05-21 Thread Gary E. Miller
. RGDS GARY ------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can’t measure it, you can’t improve it." - Lord Kelvin pgpczGhZvqeLC.pgp Descri

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