That's only about the third unit I've ever even heard of. They seem to
be rarer than hen's teeth these days. All the more reason to kick
myself for giving back the one I borrowed around Hallowe'en 1990 or so
to compare it with my GC-1000 and watch Daylight Saving Time end for the
year. It did s
jim...@earthlink.net said:
> Exactly... I've got an array of mirrors on az/el mounts (two servos
> stacked) and the reflection from the mirrors on the wall forms the display.
How many pixels in that display? Or what is the unit of quality measurement?
What sort of ADEV are you aiming for? If
Hi,
This is leap second video from NICT Japan.
https://www.youtube.com/watch?v=p_VV7d3GEhk
everyone were gather together to see leap second moment.
Best Regards,
--
-dikshie-
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I really thought I could be for once in my life be "in with the
in-crowd"...
I had my little Canon Mini-DV camera setup facing my Ball/Efratom
MGPS display. The picture was clear, the focus was good... And
5 minutes before the appointed time, I started recording, and got
a very good recording of
On 7/4/15 2:01 PM, Tom Van Baak wrote:
(the Japan earthquake in 2011 sped the earth up by 1.8
microseconds/day. The Sumatra quake on 26 Dec 2004 had a bigger
effect: 6.8 microseconds)
Hi Jim,
Just in case you didn't know -- these are theoretical results only.
There's a guy at JPL (Richard Gros
On 7/4/15 12:18 PM, Brian Inglis wrote:
(the Japan earthquake in 2011 sped the earth up by 1.8
microseconds/day. The Sumatra quake on 26 Dec 2004 had a bigger
effect: 6.8 microseconds)
By my calculations, that should mean the earth rotated 3mm farther/day
at the equator after Sumatra.
Anyone
On 7/4/15 1:42 PM, Simon Marsh wrote:
Pretty much every webserver ever written allows you to run a script in
response to a request. Nowadays there are frameworks that integrate
closely with the language of your choice and do all the heavy lifting
for you.
If fact, the problem is really too mu
On 7/4/15 12:31 PM, Bob Camp wrote:
Hi
As silly as it sounds, having a separate board for the user i/o is probably the
best way to go.
You already have an empire of devices that (somehow) chat with each other. The
barrier of
“it’s all on one device” has been broken even before i/o has been add
On 7/4/15 11:55 AM, Mike Magin wrote:
Somewhat new time-nut here (had one of the Samsung-branded Z3805s for a
few months as a house 10mhz ref, but it really got out of control when
I acquired a Wavecrest DTS, multiple frequency counters, an old Astron
1250a, a Lucent RFTG-u pair, etc.), thought I
Hi
> On Jul 4, 2015, at 3:18 PM, Brian Inglis
> wrote:
>
> On 2015-07-04 07:36, Jim Lux wrote:
>> On 7/3/15 9:45 PM, Brek Martin wrote:
>>> I feel like I missed “The Big Thing” in time keeping land. I should have
>>> watched my Ublox LEA-5T.
>>> What is the difference if it is in the reporting
On 7/4/15 11:45 AM, Bill Dailey wrote:
Pysolar
Sent from mobile
"Pysolar: staring directly at the sun since 2007"
excellent.. thanks..
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See patent US5923618 and also http://www.leapsecond.com/notes/gpswnro.htm for
details.
Based on what happened to the TS2100 (with Trimble ACE receiver) it looks like
they tried to guess which 1024-week GPS epoch it was based on how high the leap
second count was. And although this sounds good i
Matthias
I am afraid I am not much help here.
I did look at the a19/20 interpolators. A lot going on in that small space.
I guess i would check the 200 MHz feeding into it. The VCO is fairly simple
in using a gate and a delay line. I will guess the delay line is coax.
But there are all kinds of gat
> (the Japan earthquake in 2011 sped the earth up by 1.8 microseconds/day.
> The Sumatra quake on 26 Dec 2004 had a bigger effect: 6.8 microseconds)
Hi Jim,
Just in case you didn't know -- these are theoretical results only. There's a
guy at JPL (Richard Gross) who does the calculations and an
On 04/07/2015 14:13, Jim Lux wrote:
...
BUT now, I'd like to add a web interface, so that it can be
manipulated by a mobile device using a browser.
...
Is the best scheme to go in and modify the webserver code to look for
specific URLs requested, and then fire off some custom code to do what
pyEphem will get the sun position stuff for you.
-steve
On Sat, Jul 4, 2015 at 6:13 AM, Jim Lux wrote:
> I've got a project I'm working on to make a sophisticated sundial with
> moving mirrors. I've got a batch of Arduinos that move the mirrors to the
> appropriate places, given the current su
"Yes the Tymserve and other similar DATUM / Symmetricom products which
use the Trimble ACE board will fail again in 2016. This is due to the
way the GPS epoch is calculated inside the 2100 : the DATUM engineers
estimated the future leap second insertions to determine GPS epochs,
which was not a
Hi
As silly as it sounds, having a separate board for the user i/o is probably the
best way to go.
You already have an empire of devices that (somehow) chat with each other. The
barrier of
“it’s all on one device” has been broken even before i/o has been added.
The world of user input is a bi
On 2015-07-04 07:36, Jim Lux wrote:
On 7/3/15 9:45 PM, Brek Martin wrote:
I feel like I missed “The Big Thing” in time keeping land. I should have
watched my Ublox LEA-5T.
What is the difference if it is in the reporting mode for GPS or UTC time?
If they skip a second UTC, surely the GPS time i
Somewhat new time-nut here (had one of the Samsung-branded Z3805s for a
few months as a house 10mhz ref, but it really got out of control when
I acquired a Wavecrest DTS, multiple frequency counters, an old Astron
1250a, a Lucent RFTG-u pair, etc.), thought I should finally de-lurk
since I can perh
Pysolar
Sent from mobile
> On Jul 4, 2015, at 8:13 AM, Jim Lux wrote:
>
> I've got a project I'm working on to make a sophisticated sundial with moving
> mirrors. I've got a batch of Arduinos that move the mirrors to the
> appropriate places, given the current sun angle, etc.
>
> I've got
-Original Message-
From: Brek Martin
Sent: Friday, July 03, 2015 11:46 PM
>If they skip a second UTC, surely the GPS time isn't run incorrectly
forever.
Correct for who or what?
There are two kinds of time (using some simplifying assumptions):
machine and social. Machine time is monot
Dear Time-Nuts,
I´m still struggling to get my 5370A to work reliable again.
It keeps showing error 04.
Sometimes it is working without any problems for hours,
sometimes it´s a matter of minutes until the error is
displayed, and sometimes I doesn´t come up without the error
at all. I don´t
Michael A. Waldron writes:
>
> Olivier from Heol says that it will revert to 1995 again in a few
months, although he was unspecific as to the
> exact reasons he said they simulated it in their lab.
>
> I've decided I'd like to upgrade the GPS in my 2100-rb, but it will
probably be a little
I've got a project I'm working on to make a sophisticated sundial with
moving mirrors. I've got a batch of Arduinos that move the mirrors to
the appropriate places, given the current sun angle, etc.
I've got a beaglebone that runs some python code to calculate sun angle
based on time
The be
Steve has it right. GPS/atomic time is always right and our earthly time
frame is always slowing down. Though as time passes it seems it speeds up.
Must be some relativistic effect but only for humans?
Your system would not show this issue until you compared it to our time
from say WWV. Thats why t
On 7/3/15 9:45 PM, Brek Martin wrote:
Hi Guys,
I feel like I missed “The Big Thing” in time keeping land. I should have
watched my Ublox LEA-5T.
What is the difference if it is in the reporting mode for GPS or UTC time?
If they skip a second UTC, surely the GPS time isn’t run incorrectly fore
Hi
Unless your crystal has been cut for temperature sensing (AC or LC cut) you
will have some
issues sensing temperature over a very wide region.
Bob
> On Jul 4, 2015, at 12:45 AM, Brek Martin wrote:
>
>
>
> Hi Guys,
>
> I feel like I missed “The Big Thing” in time keeping land. I should
> surely the GPS time isn’t run incorrectly forever.
Yes it is :-)
In simple terms, the integer part of the drift is removed by inserting extra
seconds every so often.
A count of those seconds is part of the GPS data stream and s/w displays which
timeframe you select.
Steve
--
Steve Platt
__
Hi Guys,
I feel like I missed “The Big Thing” in time keeping land. I should have
watched my Ublox LEA-5T.
What is the difference if it is in the reporting mode for GPS or UTC time?
If they skip a second UTC, surely the GPS time isn’t run incorrectly forever.
I’m using the Ublox to synchronise
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