Hi,
Apologies if this has been asked 1000 times before.
Is there any good software for reading the NMEA or Motorola binary code out
of a M12M.
I have winoncore, but wondered if there was anything a bit more modern.
Regards
Martyn
==
Martyn,
Visua
A Day in the Life of Five PPS Sources..
This probably does not qualify as a regular TimeNuts submission as there
are no Tau's or 10^-12ths but I could not resist a simple scope capture of
the Pulse Per Second output of my new SSR-6t toy from Synergy Systems as it
performed its first right-out-of-
Folks, I have received the following
__
NOTIFICATION OF GPS JAMMING EXERCISE: HEBRIDES RANGES, 8 to 12 April 2013
Dates. Between 8 and 12 April 13
Times. Between 10.00 to 12.00 GMT and 14.00 to 16.00 GMT daily.
Location of jammer. The
Thank you, nice summary.
One of my problems is that I am in Singapore. Soldering is not an issue in
itself, but I cannot just order transistors and other small components
online.
You mention "low cost units which require you to add a power connector,
etc". Could you recommend any that can be b
From: paul swed
Thanks.
I really like the idea that a Rassberry Pi could be a time server. Maybe
enough to get me going.
Thanks
===
Paul,
I wrote up my experiences with the Raspberry Pi as a standard NTP server
here:
http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.h
David,
Any chance you can buy it in your name and have it shipped somewhere in the
States? That person then can forward it without losing their chance to get
one
as well. I have no experience shipping overseas but will second Bert's
suggestion plus volunteer myself to do it, if need be. How can
David
Unfortunately as easy as that is to do that would remove me from the buy 1
list.
Sorry.
You need a timenut that doesn't want one. :-)
Paul
WB8TSL
==
Yes, I appreciate that, Paul. Why I said "almost considered". But if
there is someone willing, I would be
Folks, I have received the following:
_
NOTIFICATION OF GPS JAMMING EXERCISE STANFORD TRAINING AREA, EAST ANGLIA,
March 2013
Dates: Between 18 and 22 March 2013.
Times: 0900 -1700 GMT.
Location of MULTIPLE jammers: Land based within 5km of N52° 29.0' E000°
45
From: Don Latham
Sent: Thursday, December 13, 2012 9:26 PM
To: time nuts
Subject: [time-nuts] Synergy SSR-6TR
The Synergy SSR-T6R timing GPS is indeed available for $35 on a one off
basis. Shipping is about $10. The very best way to order is from:
Gina Aspeytia
[]
However, the cheapest shipping
I'm not sure about the jammer but I'm running a timing receiver in
position hold several floors up, I haven't seen dropouts like this.
ntpd is running with a "noselect" NMEA source since I'm having problems
with ntpd marking the PPS and NMEA as falsetickers. The startup sequence
for the server is
From: Gabs Ricalde
[]
David,
I forgot to thank you for your helpful site and NTP plotter.
I have the antenna outside with a 180 degree view of the sky, outages
should be rare. Looking at the loopstats, the outage during the 4 us
jump is about 12 seconds. This is a test server, I only have the LO
I'm now using the SKG25A1 as a PPS source for an NTP server. Aside from
the offset, I noticed a large offset jump in the NTP loopstats
(attached) occurring about once a day. This is not the server oscillator
drifting since the frequency graph looks good at this point and this
behavior can sometime
They did respond back and I am limited to 1. Wanted 2 but such is life. :-)
Will order most likely Monday.
Regards
Paul
WB8TSL
You were lucky, Paul. I have so far received no response to my query.
73,
David GM8ARV
--
SatSignal Software - Quality software wri
Folk,
I have received the following announcement:
+
Notice of Interruption
MSF 60 kHz Time and Frequency Signal
The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio
Station will be shut down on Thursday 13 December 2012 f
Hi
Based on a quick look, the SkyNav does not appear to be a timing specific
part. A 2 us error in a navigation part would come as a big surprise.
Bob
==
Indeed! The PPS output of various navigation parts I've checked recently
have typically been
I have received the three following notices:
NOTIFICATION OF GPS JAMMING EXERCISES STANFORD TRAINING AREA, EAST ANGLIA,
FEBRUARY 2013
Dates: Between 11 and 15 February 2013.
Times: 0900 -1600 GMT.
Location of MULTIPLE jammers: Land based within
Hello, while asking info about the FE5682,
I realized that for another project
(model plane data logging) I will buy
some cheap gps modules built around an
MT3339 chipset.
In my mind somewhere I stored the fact
that in the datasheet of these module
is mentioned the pps output, so I checked
and the
-Original Message-
From: Michael Tharp
[]
What you have is probably better than the typical RS-232 DCD line.
Ultimately it's doing the same thing with mostly the same code --
triggering an interrupt when the line changes, and timestamping that in
the kernel to keep the slippage between
Quoted message:
8<---
Sent: Tuesday, 20 November, 2012 09:38
To: na...@nanog.org
Subject: Re: NTP Issues Today
[]
If your machines switched dates yesterday it probably means you're
NTP infrastructure is insufficiently peered and diversified.
--->8
-Original Message-
From: Bill Dailey
Very nice write up. I went down a similar road with my fury and Ubuntu...
And then with FreeBSD on a soekris box. Have you tried refclock drivers
instead of gpsd? I use gpsd on Ubuntu but decided to use refclock route
instead for FreeBSD. I hav
Yes, Two of my PC's asked if I wanted to change the data and time to -8xxx
days, 0 hours, 0 minutes, 0 seconds. A real head scratcher until I saw the
link below. I believe the time server was tick.usno.navy.mil
The Time Sync software that I use is D4 - see:
http://www.thinkman.com/dimension4/
-Original Message-
From: paul swed
Sent: Tuesday, November 20, 2012 9:34 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eBay Ublox
any luck on the ntp server?
==
If it's me you are asking, yes, Paul, here's th
Greetings
I know that the accuracy of GPS degrades indoors. However, suppose
that I just want to turn a GPS module on, acquire the current time
accurate to a second, and then turn it off. I can get a good deal on
the U-Blox LEA-5H modules (same as used on Arduino shields I think),
which have a hi
-Original Message-
From: David Kirkby
[]
This is some of the communication between me and Agilent on eBay. I
think it is clear Agilent wanted to use Paypal, and I did not. It was
Agilent who said I should split the payment into two - one of $10,000
and the other of $7,736
[]
Dave
-Original Message-
From: Hal Murray
[]
There is another variable to consider: cold start vs warm start. If it
doesn't know the time or doesn't have a recent copy of the satellite orbit
info, it has to search a lot harder to get locked up.
When you get a chance, disconnect it for an hour
From: james machado
[]
all good points David. I originally had place mine close to a window
to get a lock as it could not acquire any satellites in my home office
otherwise. I don't have a south facing window and my office is on the
first floor of a two story house. That may or may not have pla
-Original Message-
From: David
[]
So the 16x manual says. As far as I know, all of the Garmin LVC, HVC,
and 5Hz versions of their receivers have a timing pulse output.
The GPS18 series that I have was replaced by the GPS18x series.
Some of their receivers have "TIA-232-F (RS-232) Compa
i just used this to with a raspberry pi with good success.
https://www.adafruit.com/products/746
james
===
It looks idea, James, but ... with the 15 mm square patch antenna it seems
deaf compared to similar devices with 25 mm antennas. Perhaps
unde
oh thats my kind of basement wall wart. Place it on the wall and forget it.
I have nas drives that way. They spin down and power consumption is I want
to say 5-8 watts been a long time. May be lower. You access them they spin
up and get your data stay up for a while and back down.
A quite basement
-Original Message-
From: paul swed
most interested in you progress.
What will be the total power consumption of the pi and gps rcvr?
===
I've not measured the total, Paul, but the Raspberry Pi is about 700 mA and
the GPS receiver less than 100 mA, so the
Thanks to the folk here for pointing out the ublox receivers. I managed to
get one off eBay for ~US $30 with antenna on a board designed for hobbyists
with 3.3V serial and PPS outputs (I needed to add one wire for that) which
feed directly into a Raspberry Pi. It's still to be completed, but t
Someone at my radio club uses some mode of operation where accurate
time is required. He said the standard Windoze clock does not keep
sufficiently accurate, so he has software which updates from an NTP
server every 4 seconds or so. It's not exactly a denial of service
(DOS) attack, but seems almo
-Original Message-
From: Sarah White
Great, thanks for the loopstats.
For the included loopstats, I believe "Alta" was among the ones on which
you were running windows 7 + NTP... Would you mind confirming which
setting you have for your timezone? (since I'm reasonably certain I know
wha
-Original Message-
From: Sarah White
Sent: Saturday, November 03, 2012 9:49 AM
Thanks so much David...
Really. Thanks. I feel alot better now.
Regardless of documented issues on:
http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html
(quote) The numerous past malfunctions of Microsoft oper
-Original Message-
From: Sarah White
[]
Seeing as I'm in the process of installing a hardware refclock (trimble
thunderbolt connected via serial port) for my NTP, it is highly
problematic and potentially error-prone for microsoft's OS to touch the
bios hardware clock AT ALL.
I'm entertai
On Mon, Oct 29, 2012 at 10:42 PM, David J Taylor
wrote:
05:37:43 up 13:54, 1 user, load average: 0.26, 0.10, 0.07
Looks like you have a light duty NTP server going. the higher .26 is
likely the result of running "uptime" but the 0.1 number is from NTP
with close to zero c
I'm curious what load average numbers do you get if you type "uptime"
after running NTP for some hours. I'd guess that even on the Pi the
CPU is hardly used at all. That would also depend of the number of
NTP clients you are supporting.
Chris Albertson
Redondo Beach, California
===
I've spent the last few days getting a very simple, low-power NTP server
working on a Raspberry Pi. I've discovered far more about Linux than I feel
I need to know, and I've written it up here:
http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html
I'm making no claims for lowest power, smallest
David,
[]
Lovely! I'm impressed.
What's the reasons for the offsets? Can't your tool handle negative values?
It would be good to have min, max, max-min, avg, std.dev values without
offsets to help illustrate worst-case behaviour as well as average
performance and noise "energy". The more advance
http://www.meinberg.de/english/sw/ntp.htm
You can get NTP for windows and also their NTP Monitor.
Free download.
Rob Kimberley
=
.. with user-oriented install instructions here:
http://www.satsignal.eu/ntp/setup.html
Cheers,
David
--
SatSignal Softw
-Original Message-
From: li...@lazygranch.com
[]
Just a FYI here, using Dave's logging program, I found large errors in NTP
when the antivirus did its thing. I don't know if it was due to CPU activity
interfering with NTP or the cabinet heating up when the antivirus was
running.
=
Fellow time-nuts,
When spending time on a conference last week, I heard one interesting
comment that they lost data due to bad timing on their Windows servers.
[]
If you need better performance than that, you should use NTP (and then
download and install Meinbergs Windows-client for NTP).
Then a
I started a small Wiki for the Plane Plotter program, using the free pbworks
site:
http://planeplotter.pbworks.com
The site is easy to use, and you can have multiple authors and as many
readers as you like. I could start a Wiki for Time Nuts, if you like, or
anyone else could start one of c
I have received the following notice:
=
NOTIFICATION OF GPS JAMMING TO NAVIGATION SYSTEMS - Stanford Training Area,
Norfolk
Dates: Between 21 and 25 January 2013.
Times: Times: 0900 -1600 GMT.
Location of MULTIPLE jammers: Land based with
From: Hal Murray
[]
Timing mode also needs special firmware. I haven't seen any of the low cost
units that come with timing mode.
Does anybody have a favorite low cost timing mode unit? How about one with
minimal soldering required?
Hal,
I see Trim
Hello everyone,
I started a new project for myself where I would use the RasperryPi Linux
board as a NTP server.
[]
Question: What GPS timing module should I go with? No more Motorola Oncore
so what's best right now? Who sell modules? What are the price ranges?
Your comments are most welcome
David,
The problem is that they start in sync and over the course of a day drift
that far apart despite having NTP running. We're not sure why NTP isn't
correcting it along the way. Though at this point, we are looking at a
firmware bug.
Thanks!
Bob
===
Bob,
The problem stems from one of the two (identical) machines drifting off by
60-70 seconds per day. So a few ms here and there are ok.
[]
Bob
==
Bob,
NTP is normally limited to a +/- 500 parts per million correction - 43
seconds per day. You may be operating outsi
David Taylor has all sorts of NTP monitoring scripts, software, and tips
at his web site. Start at
http://www.satsignal.eu/software/net.htm#NTPmonitor and look around.
Brent
Thanks for the mention, Brent. Two Windows-based programs:
Remote comparison
Folks, I have received the following:
Dates: Between 1 to 11 October 2012 inclusive.
Times: Intermittent for 1hr slots between 0700 BST and 2130 BST.
Location of MULTIPLE jammers:
A.The Little Minch and North Minch northwards from Wate
Folks,
I have received the following announcement:
_
Dates: Between 24th - 28th Sept and 1st - 5th Oct 2012
Times: 0800 -1600 GMT.
Location of MULTIPLE jammers: Multiple Land based within 5km of N52° 00.881'
W003° 38.518' (SN873365 - Dix
Notice of Interruption to MSF 60 kHz Time and Frequency Signal
The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio
Station will be shut down over the period:
13 September 2012
from 10:00 BST until 14:00 BST
The interruption to the transmission is required to allow maintenanc
From: Chris Albertson
Sent: Saturday, August 18, 2012 4:55 PM
[]
Power is a bigger issue. It really does cost a bit to keep some
machines owered up 24x7 and NTP needs to run all the time. It takes
NTP hours to stabilize and you want to wait 24 hours after to measure
performance.
[]
Chris Alberts
Hi,
New guy here, seeking Oracular pronouncements for my time/frequency quest!
[]
Anyone ever had a good buying experience for this type of equipent from
China?
[]
So what I am trying to come up with now for home/shack is:
- An NTP server for our LAN
[]
Advice much appreciated!
73
Frank
KJ4OLL
=
-Original Message-
From: Mike S
Sent: Wednesday, August 08, 2012 7:24 PM
[]
?? That's a page, which despite its title, contains a .png image, so the
image is viewable in a browser. The eps is here:
http://www.acousticscale.org/wiki/images/a/a0/SHAR_PGW_2009_Staves.eps
Try opening the rea
From: Poul-Henning Kamp
[]
I can highly recommend SVG, I use it in Pylt, examples:
http://phk.freebsd.dk/misc/hp85662_a.svg
http://phk.freebsd.dk/misc/hp85662_b.svg
Try pressing '+' and '-' in your browser...
That's probably CTRL and '+'/'-' actually...
===
I can highly recommend SVG, I use it in Pylt, examples:
http://phk.freebsd.dk/misc/hp85662_a.svg
http://phk.freebsd.dk/misc/hp85662_b.svg
Try pressing '+' and '-' in your browser...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
Poul-Henning,
For info
The absolute best thing would be to make the graphs in some vector format.
Maybe PDF files. Raster plots don't scale.
Chris Albertson
Redondo Beach, California
___
Excellent idea, Chris.
David
--
SatSignal Software - Quality software written to your
Hal Murray wrote:
david-tay...@blueyonder.co.uk said:
I load screen shots into Corel Photo Paint 8 and resample the image to a
good size for a web page somewhere between 600 and 800 pixels
horizontally.
===
No, I didn't say that. Please be more careful
I load screen shots into Corel Photo Paint 8 and resample the image to a
good size for a web page somewhere between 600 and 800 pixels horizontally.
Regards.
Max. K 4 O DS.
.. and you could also make a link from that "medium" size image to the
full-sized plot.
http://www.febo.com/pages/cross-correlation/index.html
[]
(BTW, something's funky about the way your images are getting scaled... in
both Safari and Firefox, they seem to want to take on the aspect ratio of
the browser window itself, which I've never seen before. Is that
intentional? It make
For any programs which may need user-level access to their directory (e.g.
for the user to edit a .INI file) I now use a \Tools\ rather than the
Program Files directory, so I would use:
C:\Tools\Heather\
and so forth. It also avoids the requirement for quotation marks round
paths with space
I expect this will be of some interest to time nuts
Announcement of civil timekeeping meeting - from comp.risks
http://catless.ncl.ac.uk/Risks/26.92.html#subj17
"Requirements for UTC and Civil Timekeeping on Earth"
A Colloquium Addressing a Continuous Time Standard to be held at the
Univ
Could not the phase modulation be made +/-90 degrees, with the appropriate
number of stuff bits being added so that the average phase remains constant?
Would the older receivers simply average out the phase variation over a
longer period?
David GM8ARV
--
SatSignal Software - Quality software w
As an observer from across the pond:
- presumably, the vast majority of users would not be affected.
- is there a technical solution which would be compatible with both old and
new methods? Some alternative modulation scheme?
- is there not a testing period, where results can be fed back as
-Original Message-
From: Jim Lux
Sent: Monday, July 02, 2012 2:02 PM
[]
http://www.excelitas.com/Downloads/DTS_Frequency_Standards_RAFS.pdf
--
are those the ones in GPS satellites? (for instance?)
=
Jim,
The Galileo satellites h
From: Hal Murray
[]
I don't know how Windows works, but most Linux/Unix systems keep track of
time in UTC and convert to local time using the appropriate time zone.
=
Windows works in the same way - it's in UTC internally and converts for
prese
OK, less than a day to go. At this point, properly configured NTP
servers should show "leap_add_sec," "leap=01," and possibly
"leapsec=20120701". To check, do an "ntpq -crv". "ntpq -crv
" to check a remote host (if it allows it).
==
I checked al
Folks, I have received the following notice:
__
NOTIFICATION OF A GPS JAMMING EXERCISE SENNYBRIDGE TRAINING AREA, WALES,
DURING THE PERIOD 24 SEPTEMBER - 5 OCTOBER 2012
Details of Low Power Jamming.
Dates: Between 24-28 September and 1-5 O
Most of the SMT boards on the market come configured for TEP protocol which
is (somewhat) compatible with the Motorola receivers. You can use a program
like TRIMBLEMON to configure it for TSIP and 9800,8,N,1 serial format.
Once you do that, the latest version of Lady Heather will work with it.
Hi David,
I have chked vith TAC32 SW, 9600 Baud and Motorola binary code and it is
working OK. even will initialize the SMT gps board when there is a
power interruption and no any protocol comes out.
Also chked with the Winoncore SW and it display data but not all.. and
this SW does
Hi David,
thanks a lot for the info, I have also the 1PPS output, but had the
impression that it will also output TSIP or any other kind of MSG upon
power-up... and you can configure the board as required of the need.it
outputs according to the TrimbleStudio SW is TEP format but any
Hi,
anybody having some experience with this board..
I have the following problemafter power on the board it does not output
any msg only if I use the " TrimbleStudio SMT " software..on my
PC..
Is there any solution to use the board without the PC/software ???
Thanks a
david-tay...@blueyonder.co.uk said:
Does the glitch mean you had a 16-second outage or what? I'm not clear.
Yes.
For the previous year or so, my local power has been very good. I've seen
occasional off-by-one counts in both directions but nothing more interesting
than that.
I haven't tracke
I had a power glitch last night. It shows up as a step on the 60 Hz
clock-drift graph. That reminded me that I had another glitch a few weeks
ago.
16 seconds:
http://www.megapathdsl.net/~hmurray/time-nuts/60Hz/60Hz-2012-Jun-20-gap.png
0.1 second:
http://www.megapathdsl.net/~hmurray/time-nuts/6
Folks may be interested in this article:
http://www.bbc.co.uk/news/science-environment-18497083
"A group of experts has urged funders of UK research to encourage
scientists to publish their results in journals that offer free public
access to findings.
"A report by Dame Janet Finch argues
I run Dimension 4 as a time standard on my POC's, mainly for using
JT65 digital radio communications. It polls tick.usno.navy.mil for the
time. I have noticed since getting my ThunderBolt set up that the GPS
time is about 15 seconds in advance of my PC clock, despite a
correction via Dimension 4 i
Slightly off-topic, the first time I was aware of polarisation error was
during the very first trans-Atlantic TV tests. On the first night,
signals were fine in France (who had a copy of the US antenna), but poor
in the UK who had designed and built their own antenna). UK changed
polarisation
But I was really hoping to cadge a copy of the manual.
Sent offline.
David GM8ARV
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-tay...@blueyonder.co.uk
___
time-nuts mailing list -
Folks, I have received the following notice:
__
Notice of Interruption to MSF 60 kHz Time and Frequency Signal
The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio
Station will be shut down over the period:
14 June 2012
from 10:00 BST until 14
I have received the following notice:
__
NOTIFICATION OF GPS JAMMING EXERCISES RAF SPADEADAM, CUMBRIA, SEPTEMBER
2012
Dates: Between the 10th of Sept to the 14th of Sept 2012 inclusive.
Times: 0700 -2000 GMT.
Location of MULTIPLE jammers: Land based
I've played with a Lantronix single port server and a Digi 16 port
server with no problems for simple COM port emulation. But I wonder if
they would work well with an NTP server. Has anyone tested that? Is
the network delay a problem due to either amount of delay or variation
in the delay?
Does anyone have or know where I can find the pinouts for a Trimble
Resolution T Timing GPS module 12ns 1pps?
Thankyou
Ken Kubick
The user guide?
http://trl.trimble.com/dscgi/ds.py/Get/File-221342/ResolutionT_UG_2B_54655-05-ENG.pdf
Page 24
Cheers,
David
--
SatSignal software - quality so
I am planning on making a simple NTP server using the Resolution SMT as
the PPS input and a Rb oscillator (or any other 10MHz clock) to clock
the CPU on the computer. If people are interested in a friendly
interface board to the device let me know. My initial interface board
design puts the PPS
I see the Trimble Resolution SMT Timing GPS OEM board 66974-35 on a
well-known auction site from a weel-know seller "fluke.i", at quite a
good price, and free UK post. Is it any good - as good it seems to be.
Any experience?
Just to report back that I eventually got round to powering up one o
I bought mine because of the gain, but on +5V it performs worse than a
"38 dBi" antenna, quite a lot worse. I'm wonder whether it needs more
volts, or whether it's simply broken. It was ex-equipment, and not in
very good shape, but it was described as "used" so I'll just write off
the loss, I
Hello.
Would not be very useful to create a list of what interesting ideas have
been implemented on what instrument (sometimes in a perfect way,
sometimes
maybe not), so everyone could study the service manuals, schematics, and
learn?
I think it will become a reference of the "state of the art"
I enjoyed the talk, thanks to the OP for pointing it out. Of course, I
would have liked more detail on the GPS!
73,
David GM8ARV
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-tay...@blueyonder.co.uk
Hi David,
very similar work was done at PTB in Germany
http://www.ptb.de/en/aktuelles/archiv/presseinfos/pi2012/pitext/pi120301.html
... the charm of forbidden things...
Best regards
Bernd Neubig
Danke,
David
--
SatSignal software - quality software written to your requirements
Web: http:/
The tick-tock of the optical clock
NPL time scientists have made an accurate measurement of the highly
forbidden octupole transition frequency in an ytterbium ion, which could
be used as the basis for the next generation of optical atomic clocks -
see:
http://www.npl.co.uk/news/the-tick-toc
Is everyone buying these because they have 40dB gain or because they are
the only reasonably priced GPS timing antennas on eBay right now?
Thomas Knox
Thomas,
I bought mine because of the gain, but on +5V it performs worse than a "38
dBi" antenna, quite a lot worse. I'm wonder whether it ne
First payload ready for next batch of Galileo satellites - see:
http://www.esa.int/esaNA/SEM1Z7KWZ0H_index_0.html
According to the BBC, the photo here:
http://www.esa.int/images/IMG_8364_scr.jpg
shows two hydrogen masers (long cylinders lower right, and two rubidium
clocks (silver boxes jus
Never got my hands on it. The documentation doesnt look bad (at least
not in the 5min i invested). I think it's cheap enough to buy a couple
and try them :)
Attila Kinali
Thanks, Attila. That's just what I've done - they are now on the slow
boat from China! I had thought that someone else he
I see the Trimble Resolution SMT Timing GPS OEM board 66974-35 on a
well-known auction site from a well-known seller "fluke.i", at quite a
good price, and free UK post. Is it any good - as good it seems to be.
Any experience?
[No replies, so second post. No comments from anyone?]
Thanks,
Da
I see the Trimble Resolution SMT Timing GPS OEM board 66974-35 on a
well-known auction site from a weel-know seller "fluke.i", at quite a good
price, and free UK post. Is it any good - as good it seems to be. Any
experience?
Thanks,
David
--
SatSignal software - quality software written to y
Hello Fellow Time-Nuts,
I am new to the group - and was asked by someone from HPSDR/TAPR to get
an
opinion, good/bad, of the attached PDF which I hope doesn't exceed the
allowable byte size of posts.
[]
Thanks and 73's,
John W.
San Jose, CA
AJ6BC (Ham Call Sign)
Did I miss the PPS output pi
This is the kind of important and detailed information I really
wish we would collect in a wiki somewhere...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
You can set up a free Wiki here:
http://pbworks.com/
I've done a couple for various software
Cheers,
David
--
SatSignal so
'Navipedia': the reference for satellite navigation know-how. "Satellite
navigation is progressing swiftly, in fact so swiftly that its printed
textbooks can't keep pace - so ESA has introduced its own wiki-based
information source, Navipedia, which is also the first ever ESA technical
wiki op
I asked this on an NTP list, got some guesses, but no knowledgeable
responses.
[]
So, running a process(es) which keep the CPU completely busy reduces the
jitter. The busier, the better. Why? I'm guessing it has something to do
with interrupt latency, but why does a busy CPU make it more
consi
I have received the following notice
___
NOTIFICATION OF GPS JAMMING EXERCISES SCOTLAND, NORTH AND WEST COASTS,
16-26th APRIL 2012
Dates: Between 16 to 26 April 2012 inclusive.
Times: Intermittent for 1hr slots between 0800BST and 2130BST.
Location o
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