One other delay contributor would appear to be processing delay in the
receiver, which thus begs the question of how the PPS signal is actually
synchronized to the GPS system.
Tom Holmes, N8ZM
Tipp City, OH
EM79
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-b
Kiwi Geoff wrote:
Brooke Clarke wrote:
When you look at the time difference between the recent events on a geologic
scale you could say they all happened at the same time.
Hi Brooke, I'm writing from my home in Christchurch, New Zealand.
"Local Time" of the event is an important variable.
L
On Sep 7, 2010, at 5:16 PM, jimlux wrote:
> Yes.. except that the cable's physical and electrical length *do* vary with
> temperature, so if you're looking at the gnat's eyelash sort of thing, you
> need to take that into account. Maybe 10 ppm/degree, so a 20 meter run will
> change a bit less
Steve Rooke wrote:
On 8 September 2010 01:23, Stanley Reynolds wrote:
Yes we do need leap-Centimeters for MSL :-D
Pilot to co-pilot: Well the instruments say we should have landed by now...
Steve
You forgot the canonical next couple lines in the transcript:
Copilot: "what was that?"
Hal Murray wrote:
Maybe they were actually interested in the humidity as a source of phase
distortion or attenuation?
Maybe they wanted to prove that the temperature did not cause a problem?
Or maybe just a government paid-for helicopter ride.
Geologists are interested in plate motions o
Hal Murray wrote:
Many years ago I ran into a combined group on Mt. Wilson, our local
broadcast farm in the mountains, from Cal Tech and MIT that was measuring
the movement between Southern California mountains using lazers. While
this was scientifically fascinating, it gave me the willies.
Mark J. Blair wrote:
On Sep 7, 2010, at 6:30 AM, jimlux wrote:
Another analogy is that if you had a machine that recorded all the signals,
mounted right at the antenna, and then carried the recording half way around
the world, and then ran the recording into a receiver, it would give you the
Brooke Clarke wrote:
> When you look at the time difference between the recent events on a geologic
> scale you could say they all happened at the same time.
Hi Brooke, I'm writing from my home in Christchurch, New Zealand.
"Local Time" of the event is an important variable.
Last Saturday we ha
Bob,
No parts list except this one which you can use to get started :
http://n4iqt.com/BillRiley/DMTDMixerModulePartsList.xls
Spreadsheet file
or down load the free PCB express software and generate a parts list with them
and files here :
http://n4iqt.com/BillRiley/MixerModule_7.sch
http://n4i
Huh?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Brooke Clarke
Sent: Tuesday, September 07, 2010 9:53 AM
To: time-nuts@febo.com
Subject: [time-nuts] New Zealand, Iceland, Haiti
Hi:
All the subject locations are on the edge of
On 8 September 2010 06:38, Magnus Danielson wrote:
> On 09/07/2010 05:13 PM, Poul-Henning Kamp wrote:
>>
>> In message<4c8651e7.1080...@att.net>, Brooke Clarke writes:
>>
>>> All the subject locations are on the edge of the Pacific plate.
>>
>> Iceland ? On the edge of the *Pacific* plate ?
>>
>>
On 8 September 2010 01:38, jimlux wrote:
>
> You could easily have a displacement of a meter or more..
>
> The (M7+) Landers earthquake here in Southern California a few years back
> had a lateral displacement of 10 meters or so and vertical displacements of
> a meter.
>
> If there's any soil su
Cool. Is there a parts list? I definitely want to build one. Looks like
a really interesting project and a great opportunity for me to learn. I've
been meaning to tinker with those AD DDS chips for a while. I have a dev
kit for one of the models around here somewhere that I picked up for an
On 8 September 2010 01:23, Stanley Reynolds wrote:
> Yes we do need leap-Centimeters for MSL :-D
Pilot to co-pilot: Well the instruments say we should have landed by now...
Steve
> Stanley
>
>
>
> Some bureaucrat adjusted MSL by 1.3m quietly because it would be
> politically incorrect to admit
time-nuts-boun...@febo.com wrote on 09/07/2010 02:57:07 PM:
> From:
>
> Hal Murray
>
> To:
>
> Discussion of precise time and frequency measurement
>
> Date:
>
> 09/07/2010 03:15 PM
>
> Subject:
>
> Re: [time-nuts] Steve's new QTH...
>
> Sent by:
>
> time-nuts-boun...@febo.com
>
>
>
Burt,
On 8 September 2010 01:45, Burt I. Weiner wrote:
> Steve,
>
> Depending on the type of antenna used for your GPS, you might want to check
> the Zenith or vertical angle, and if possible, compare that to pre-quake
> positioning. Your antenna may now be seeing a change in multipath from some
> Does this mean that while the antenna feedline cable length does not
> influence the measured position (at the phase center of the antenna), and it
> does not influence the accuracy of a disciplined frequency reference output,
> it does introduce an error into the absolute time output (i.e., add
> Maybe they were actually interested in the humidity as a source of phase
> distortion or attenuation?
> Maybe they wanted to prove that the temperature did not cause a problem?
> Or maybe just a government paid-for helicopter ride.
Geologists are interested in plate motions over extended pe
Hal...
Maybe they were actually interested in the humidity as a source of phase
distortion or attenuation?
Maybe they wanted to prove that the temperature did not cause a problem?
Or maybe just a government paid-for helicopter ride.
Tom Holmes, N8ZM
Tipp City, OH
EM79
> -Original Message-
> Many years ago I ran into a combined group on Mt. Wilson, our local
> broadcast farm in the mountains, from Cal Tech and MIT that was measuring
> the movement between Southern California mountains using lazers. While
> this was scientifically fascinating, it gave me the willies.
I'm in Sili
My Samsung 3805 says 19.5 - 30VDC. I'm running it from 24 V. I see
from labels on the back, it has an option of 38 - 60VDC, but that's not
the way this one was configured.
I do see, now, that the back does have a Symmetricom logo.
On 9/7/2010 9:42 AM, Bob Camp wrote:
Hi
The "China" 3805's
On 09/07/2010 05:13 PM, Poul-Henning Kamp wrote:
In message<4c8651e7.1080...@att.net>, Brooke Clarke writes:
All the subject locations are on the edge of the Pacific plate.
Iceland ? On the edge of the *Pacific* plate ?
Have I missed some serious tektonic activity last night ?
No.
Icela
Yes this file:
http://www.n4iqt.com/BillRiley/A-Small-DMTD-System.pdf
Stanley
- Original Message
From: Robert Darlington
To: Discussion of precise time and frequency measurement
Sent: Tue, September 7, 2010 11:54:56 AM
Subject: Re: [time-nuts] Small DMTD project PCBs Group Buy Updat
Yep :)
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: "Mark J. Blair"
Sender: time-nuts-boun...@febo.com
Date: Tue, 7 Sep 2010 09:24:53
To: Discussion of precise time and frequency measurement
Reply-To: Discussion of
Hi Stanley,
I'm very interested in building this project. Do you have documentation
online? I'd like to read through it then send you the $47 for the boards.
Thanks,
Bob
On Sat, Sep 4, 2010 at 1:28 PM, Stanley Reynolds wrote:
> Packing them up to take to the PO.
> Paypal to stanley_reyno...@
Hi Mark:
Exactly.
Have Fun,
Brooke Clarke
http://www.PRC68.com
Mark J. Blair wrote:
On Sep 7, 2010, at 6:30 AM, jimlux wrote:
Another analogy is that if you had a machine that recorded all the signals,
mounted right at the antenna, and then carried the recording half way around
the wo
Hi
If you are only interested in frequency, antenna feed line delay will not
matter to you.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Mark J. Blair
Sent: Tuesday, September 07, 2010 12:25 PM
To: Discussion of precise time and
Hi
The "China" 3805's run on 48 volts and are internally marked Symmetricom and
marked Samsung on the outside. The cheaper "Korea" 3805's run on 24 volts
and are marked HP internally. There is about a 5 year difference in age
between the HP and the Symmetricom units.
Bob
-Original Message--
Exactly, well put.
John WA4WDL
--
From: "Mark J. Blair"
Sent: Tuesday, September 07, 2010 12:24 PM
To: "Discussion of precise time and frequency measurement"
Subject: Re: [time-nuts] What position is measured?
On Sep 7, 2010, at 6:30 AM, ji
HI Bill...
Yes, the HDBX version goes that high, it was the base BX that I didn't think
went past 50 feet.
Tom Holmes, N8ZM
Tipp City, OH
EM79
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of WB6BNQ
> Sent: Friday, September 03,
On Sep 7, 2010, at 6:30 AM, jimlux wrote:
> Another analogy is that if you had a machine that recorded all the signals,
> mounted right at the antenna, and then carried the recording half way around
> the world, and then ran the recording into a receiver, it would give you the
> position of the
Brice
I don't receive all the messages from the list but check the archives. I have
the boards and extras so busy packing / shipping. Just checked paypal and did
not see your payment. If you have sent it do not worry I will figure it out. I
use a spread sheet to match up names, nick names, payp
That earthquake was A LOT worse than reported...
Didier
--Original Message--
From: Poul-Henning Kamp
Sender: time-nuts-boun...@febo.com
To: bro...@pacific.net
To: Time-Nuts
ReplyTo: Time-Nuts
Subject: Re: [time-nuts] New Zealand, Iceland, Haiti
Sent: Sep 7, 2010 10:13 AM
In message <4c86
Bob,
I wonder if you are really talking about Z3805A's?
I know the double-oven version of 10811's were in the earlier Z3801A's;
never heard of one in Z3805A. I have a Z3816A and a Z3805A. They both
have MTI 260-model 5 MHz oscillators. I assume that is the "better" one
you are referring to.
Betreff: Re: [time-nuts] New Zealand, Iceland, Haiti
> In message <4c8651e7.1080...@att.net>, Brooke Clarke writes:
>
> >All the subject locations are on the edge of the Pacific plate.
>
> Iceland ? On the edge of the *Pacific* plate ?
>
> Have I missed some serious tektonic activity last n
In message <4c8651e7.1080...@att.net>, Brooke Clarke writes:
>All the subject locations are on the edge of the Pacific plate.
Iceland ? On the edge of the *Pacific* plate ?
Have I missed some serious tektonic activity last night ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@f
Hi:
All the subject locations are on the edge of the Pacific plate.
http://en.wikipedia.org/wiki/File:Plates_tect2_en.svg
When you look at the time difference between the recent events on a
geologic scale you could say they all happened at the same time.
--
Have Fun,
Brooke Clarke
http://www.
Steve,
Depending on the type of antenna used for your GPS, you might want to
check the Zenith or vertical angle, and if possible, compare that to
pre-quake positioning. Your antenna may now be seeing a change in
multipath from some nearby environmental change (no pun intended
under the circu
Steve Rooke wrote:
Well, Steve has been experiencing a LOT of after-shocks, some of which
are still big enough to move things around and I found I had to grab
hold of my cup of tea to stop it shaking onto the floor last night. In
fact these after-shocks are still opening up new cracks in roads an
Peter Krengel wrote:
Hi nuts,
have got some interesting question from friends.
They asked
What coordinates are measured and registrated by a GPS.
Is it the position of the antenna, it could be 100m (300ft) away from me
or is it the position of the GPS RX as this is the position of the µC wher
Yes we do need leap-Centimeters for MSL :-D
Stanley
Some bureaucrat adjusted MSL by 1.3m quietly because it would be
politically incorrect to admit that the globe was actually warming.
We have some idea of how time is adjusted for GPS. Does anyone know
how and when MSL is adjusted? I mean, 1.
Yes, it is the position of the antenna. Once the signals enter the
downlead, their relative positions in time are fixed. It is the relative
positions in time that are used to determine position.
John WA4WDL
--
From: "Peter Krengel"
Sent: Tues
Hi
In this context, the 3805's I have with 10811's do not perform quite as well
as the later parts with the true DOCXO's in them. There seemed to be a bit
of confusion over which one was being referred to, so I stated it a bit more
strongly. Both do indeed appear to meet the 10 us / day spec they
I'm having a problem with a sentence that contains "bad" and 10811 in
proximity. It sounds like an oxymoron.
Please could someone elaborate on why a 10811 OCXO in a 3805 is bad?
Regards,
David Partridge
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo
Hi
The "bad units" with the 10811's in them are usually marked "HP". The "good
units" with the true DOCXO in them are normally marked "Symmetricom".
Bob
--
From: "Pete Lancashire"
Sent: Monday, September 06, 2010 6:14 PM
To: "Discussion of prec
I've seen news coverage of that field in Darfield and it's just like a
giant has torn each end of the field apart with half of it going one
way and the other end going in the opposite direction.
There are still new cracks and crevasses opening up each day as the
magnitude of the after-shocks are r
Magnus,
On 7 September 2010 19:49, Magnus Danielson wrote:
> Steve,
>
> On 09/07/2010 08:08 AM, Steve Rooke wrote:
>>
>> Well, Steve has been experiencing a LOT of after-shocks, some of which
>> are still big enough to move things around and I found I had to grab
>> hold of my cup of tea to stop
Chuck was a really good friend to me, with all the exceptional, positive
qualities being described by others. Everyone's comments are spot-on.
He will be missed.
Greg Burnett
- Original Message -
From: "Pete Rawson"
To:
Sent: Monday, September 06, 2010 7:47 AM
Subject: [time-nuts] C
sar10...@gmail.com said:
> The mast could have sunk a bit or even this whole area could have done as I
> live on reclaimed marsh-land. My Mothers 3 year old house looks like it has
> sunk a bit at one and and risen at the other, ie. it looks like it has
> tipped slightly as her house is built on a
Steve,
On 09/07/2010 08:08 AM, Steve Rooke wrote:
Well, Steve has been experiencing a LOT of after-shocks, some of which
are still big enough to move things around and I found I had to grab
hold of my cup of tea to stop it shaking onto the floor last night. In
fact these after-shocks are still o
50 matches
Mail list logo
