On Thu, Mar 29, 2012 at 08:43, Hal Murray hmur...@megapathdsl.net wrote:
I think of GPS as a bunch of satellites broadcasting I'm Bob, my orbit
parameters are XXX, my clock says YYY. If you hear 4 of those, you have 4
equations to work out 4 unknowns. The unknowns are your position: X, Y,
Thomas,
The sawtooth error on the Motorola M12+ is about +/- 25ns, while the
CW12-TIM has a sawtooth error of +/- 2 ns, so correcting for the
sawtooth error is not as critical with the CW12-TIM.
The first claim
The sawtooth error on the Motorola M12+ is about +/- 25ns
is correct but are
The sawtooth error on the Motorola M12+ is about +/- 25ns, while the
CW12-TIM has a sawtooth error of +/- 2 ns, so correcting for the
sawtooth error is not as critical with the CW12-TIM.
The first claim
The sawtooth error on the Motorola M12+ is about +/- 25ns
is correct but are you
I'm currently have to convince management that our 6-1/2 DMM (0.01%
uncertainty) can't be used to test the 0.1ppm DC Source that we're repairing.
Don't bother, just send it to me (once you've fixed it natch) :)
On a more serious note what it this DC source that can manage 0.1ppm - the only
Yes, and moreover: what kind of test can be done on that DC source if no
DMM is able to show that accuracy?
On Thu, Mar 29, 2012 at 9:53 AM, David C. Partridge
david.partri...@perdrix.co.uk wrote:
I'm currently have to convince management that our 6-1/2 DMM (0.01%
uncertainty) can't be used
We (that is my company) use the CW12-TIM (NMEA version) and its PPS wonders
as usual, nothing different from a uBlox LEA-5T or the M12M.
On Thu, Mar 29, 2012 at 9:32 AM, Hal Murray hmur...@megapathdsl.net wrote:
The sawtooth error on the Motorola M12+ is about +/- 25ns, while the
CW12-TIM
I just posted what I was sent for the manufacturer, warts and all. I did notice
they were comparing to the M12+ or M12. I hope the specs are correct. I
purchased one and will pass on measurement when I get a chance to test it.
Thomas Knox
To: time-nuts@febo.com
From:
OK been only slightly paying attention.
But I see in the US several sellers for a operational board at $84-89.
Maybe I have the wrong unit but it does say 5ns or less timing error
Regards
Paul
WB8TSL
On Thu, Mar 29, 2012 at 11:50 AM, Ed Palmer ed_pal...@sasktel.net wrote:
On 3/29/2012 12:54 AM,
Yes, it is: the CW12 has the PPS derived from the 100MHz clock and that's
why you have that PPS granularity with no need for a sawtooth correction.
On Thu, Mar 29, 2012 at 7:18 PM, paul swed paulsw...@gmail.com wrote:
OK been only slightly paying attention.
But I see in the US several sellers
On Wed, 28 Mar 2012 10:26:55 -0700 (PDT)
CORNACCHIA salc...@rogers.com wrote:
I have been a member of the group for a long time yahoo is not sending email.
Thank You
If you are using yahoo as your webmail, change! quickly!
As someone who has been administrating quite a few mailinglists for
On Wed, 28 Mar 2012 16:20:49 -0700
Hal Murray hmur...@megapathdsl.net wrote:
All that is of course correct. But ultimately the pulsars are a better
source, I see it as an application question, could it be utilized? Perhaps
building an algorithm and basing corrections on multiple pulsars
From http://www.ti.com/tool/cc4000gpsem GNS TC6000GN module and EM board
At the GNS site I was able to get a TC6000GN-P1 data sheet and design guide.
Bob LaJeunesse
From: Attila Kinali att...@kinali.ch
To: armstr...@sedsystems.ca; Discussion of precise time
I agree and it is unfortunate, because of all the email accounts I have (and
that's quite a few), I like their web mail client the best.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Attila Kinali att...@kinali.ch
Sender:
Interesting. I use yahoo mail to receive email from this list and as far as I
am aware I have not had any issues. (Ie. in following threaded conversations
it's never been apparent to me that I have missed any of the messages.)
___
time-nuts
On 03/29/2012 01:50 AM, Jim Palfreyman wrote:
Folks, I'm currently writing my thesis on pulsars, but I need to spend time
on it rather than here. :-) But since a lot of this discussion is right at
the front of my brain, here's a summary.
Some pulsars glitch or speed up. The Vela pulsar (PSR
On 3/29/12 3:17 PM, Magnus Danielson wrote:
just so we can re-transmit it, is probably not sensible. However,
studies of these remarkable pulsars is ongoing.
Hmm, wouldn't the space-located antenna have a good chance of better S/N
as the antenna sees cold space and could be kept cold itself?
I thought I might apologize because I didn't explain my idea very well
initially, and reiterate my original thoughts on a pulsar timing idea. The
basis of my idea was that if problems could be overcome certain pulsars could
provide not only Time but also Position info directly to orbiting
On 3/28/2012 4:50 PM, Jim Palfreyman wrote:
Folks, I'm currently writing my thesis on pulsars, but I need to spend time
on it rather than here
I'd love to hear more about your thesis (offline question most likely).
I thought I'd add in the detail that I found on another site about one
When I subscribed to Time Nuts several years ago I felt a little self-concise
and purchased a Citizen WWV watch and in all seriousness it has run flawlessly.
But I quickly learned that to really fit in I would need a tourbillon movement
watch or the TVB mondo wrist watch demonstrated by a
That is a great job. Just looking at the TIFFs. Motivates me to get the
better viewers mentioned in the thread. Funny thing. I always though having
an xray like this would be quite a help.
It reveals the jobs just that much harder. But still fantastic.
Regards
Paul
WB8TSL
On Wed, Mar 28, 2012 at
On 3/29/12 6:19 PM, Tom Knox wrote:
I thought I might apologize because I didn't explain my idea very
well initially, and reiterate my original thoughts on a pulsar timing
idea. The basis of my idea was that if problems could be overcome
certain pulsars could provide not only Time but also
On 3/29/2012 3:16 PM, Attila Kinali wrote:
If you are using yahoo as your webmail, change! quickly!
They're not called yahoos for nothing. But, Microsoft and Google
aren't far behind in Internet cluelessness.
http://www.merriam-webster.com/dictionary/yahoo
Jim,
If you look at some atomic clocks, they really do look like they were
built in somebody's basement... out of WW II RADAR parts and Home Depot
plumbing fittings.
-John
On 3/29/12 6:19 PM, Tom Knox wrote:
I thought I might apologize because I didn't explain my idea very
ATT is my Internet provider. ATT does not provide e-mail even though
they have .att, sbcglobal.com (or whatever). When you subscribe to
ATT e-mail you wind up with Yahoo as the actual e-mail provider along
with the Yahoo e-mail servers. I do not like Yahoo and I will agree
with Attia's
On Thu, 29 Mar 2012 13:14:14 -0700 (PDT)
Robert LaJeunesse rlajeune...@sbcglobal.net wrote:
From http://www.ti.com/tool/cc4000gpsem GNS TC6000GN module and EM board
At the GNS site I was able to get a TC6000GN-P1 data sheet and design guide.
Yes, i found the TC6000GN-P1 datasheet from GNS
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