[time-nuts] A milestone approaches

[Mark Sims]

I told Heather to display the time as Unix seconds and to do a screen dump at 
the Magic Moment...  which was duly captured for posterity...   Some poor souls 
are easily amused by such things...  

OK, there was a 1 millisecond delay for the dump to trigger.  Receiver was a 
Thunderbolt.___
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Re: [time-nuts] WWVB & Eclipse

[William H. Fite]

Did I put my foot in it? It was a sincere question.


On Thursday, July 13, 2017, Bob kb8tq  wrote:

> Hi
>
> I think we are both taking it as a given that the eclipse’s impact on the
> ionosphere will
> be “visible” even with a fairly simple setup. I guess that might qualify
> for a very loose
> definition of the term “hypothesis” in my case. I can’t speak for Tom.
>
> Bob
>
> > On Jul 13, 2017, at 6:24 PM, William H. Fite  > wrote:
> >
> > Tom, are some specific hypotheses being tested or is this purely
> > exploratory?
> >
> > Bill
> >
> >
> > On Thursday, July 13, 2017, Tom Van Baak  > wrote:
> >
> >> The trick is to just run the timing receiver in all-in-view mode
> >> collecting 1PPS data against your house standard as usual, but also
> capture
> >> all the binary message(s) where the per-SV Az/El/SNR and phase residuals
> >> are reported. This allows you to re-create the individual "1PPS" from
> each
> >> SV used in the timing solution. Or maybe just use the RINEX data. This
> is
> >> what I was referring to in the CORS reference to Brooke.
> >>
> >> It would be "cheating" to know the eclipse path ahead of time and mine
> the
> >> data for confirmation. Instead I dare you to blindly mine the GPS data
> for
> >> all of August and then make a bold claim when and where the eclipse was,
> >> like capturing a trace through a cloud chamber. Having done all that you
> >> can "look in the back of the book" for the actual eclipse path to see
> how
> >> right you were.
> >>
> >> /tvb
> >>
> >> - Original Message -
> >> From: "Bob kb8tq"  >
> >> To: "Tom Van Baak"  >;
> "Discussion of
> >> precise time and frequency measurement"   
> >>>
> >> Sent: Thursday, July 13, 2017 3:01 PM
> >> Subject: Re: [time-nuts] WWVB & Eclipse
> >>
> >>
> >> Hi
> >>
> >> If one perhaps knew the path of the eclipse in advance *and* had a GPS
> >> timing receiver that
> >> could be set somehow to look at a single satellite….. all one would need
> >> is a means of comparing
> >> the output to a stable reference to *possibly* observe something
> >> interesting.
> >>
> >> More or less: You know the path of eclipse roaring along bashing the
> >> ionosphere. You can (maybe)
> >> pick a sat who’s signal traverses that region while getting to your
> >> location during the eclipse. Yes, it’s
> >> not original science. It might still be fun.
> >>
> >> Bob
> >>
> >>
> >>
> >>> On Jul 13, 2017, at 5:55 PM, Tom Van Baak  wrote:
> >>>
> >>> Brooke,
> >>>
> >>> Nice set of links. Thanks. There's a poster here with an overview:
> >>>
> >>> https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_
> >> Moses-Eclipse_Research_CEDAR_Poster.pdf
> >>>
>  Is there a study based on GPS observations?
> >>>
> >>> It will all be there for free in CORS. It's just a matter of mining the
> >> data.
> >>> Apparently this is done a lot. Here are some random examples of what
> can
> >> be done. Pretty amazing.
> >>>
> >>> https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
> >>> http://www.gps.gov/cgsic/smg/2004/smith.pdf
> >>> https://arxiv.org/pdf/1006.3565.pdf
> >>>
> >>> Google for a subset of words like: CORS Ionosphere Monitoring Analysis
> >> Modeling TEC
> >>>
> >>> /tvb
> >>>
> >>> - Original Message -
> >>> From: "Brooke Clarke" 
> >
> >>> To: "Discussion of precise time and frequency measurement" <
> >> time-nuts@febo.com  >
> >>> Sent: Thursday, July 13, 2017 1:35 PM
> >>> Subject: [time-nuts] WWVB & Eclipse
> >>>
> >>>
>  Hi:
> 
>  There's a massive experiment relating to the strength of WWVB and a
> >> transmitter in Dixon California.
> 
>  https://www.washingtonpost.com/news/speaking-of-science/
> >> wp/2017/07/12/a-massive-atmospheric-experiment-is-
> >> planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
> 
>  http://eng.umb.edu/~eclipsemob/index.php  >> 7Eeclipsemob/index.php>
> 
>  http://www.hamsci.org/sites/default/files/publications/
> >> 2017_IES_Liles.pdf
>  This article says Dixon may transmit at 55.1 and 135.95 kHz.
> 
>  The EclipseMob receiver works with a smart phone acting as an SDR. as
> >> well as the source of it's position and the
>  date-time of observation.
> 
>  There is a parallel study based on ham radio WSPRNet and Reverse
> Beacon
> >> Network.
>  http://hamsci.org/
> 
>  Is there a study based on GPS observations?
> 
>  --
>  Have Fun,
> 
>  Brooke Clarke, N6GCE
>  http://www.PRC68.com
>  http://www.end2partygovernment.com/2012Issues.html
> 
>  ___
>  time-nuts mailing list -- time-nuts@febo.com 
> 
>  To unsubscribe, go to https://www.febo.com/cgi-bin/
> >> mailman/listinfo/time-nuts
>  and follow the instructions there.
> >>> ___
> >>> time-nuts mailing list -- time-nuts@febo.com 
> 
> >>> To unsubscribe, go to https://www.febo.com/cgi-bin/
> >> mailman/l

Re: [time-nuts] WWVB & Eclipse

[Azelio Boriani]

Also DGPS stations logging:


On Thu, Jul 13, 2017 at 10:35 PM, Brooke Clarke  wrote:
> Hi:
>
> There's a massive experiment relating to the strength of WWVB and a
> transmitter in Dixon California.
>
> https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/12/a-massive-atmospheric-experiment-is-planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
>
> http://eng.umb.edu/~eclipsemob/index.php
> 
>
> http://www.hamsci.org/sites/default/files/publications/2017_IES_Liles.pdf
> This article says Dixon may transmit at 55.1 and 135.95 kHz.
>
> The EclipseMob receiver works with a smart phone acting as an SDR. as well
> as the source of it's position and the date-time of observation.
>
> There is a parallel study based on ham radio WSPRNet and Reverse Beacon
> Network.
> http://hamsci.org/
>
> Is there a study based on GPS observations?
>
> --
> Have Fun,
>
> Brooke Clarke, N6GCE
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
>
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
___
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Re: [time-nuts] WWVB & Eclipse

[Bob kb8tq]

Hi

I think we are both taking it as a given that the eclipse’s impact on the 
ionosphere will
be “visible” even with a fairly simple setup. I guess that might qualify for a 
very loose 
definition of the term “hypothesis” in my case. I can’t speak for Tom. 

Bob

> On Jul 13, 2017, at 6:24 PM, William H. Fite  wrote:
> 
> Tom, are some specific hypotheses being tested or is this purely
> exploratory?
> 
> Bill
> 
> 
> On Thursday, July 13, 2017, Tom Van Baak  wrote:
> 
>> The trick is to just run the timing receiver in all-in-view mode
>> collecting 1PPS data against your house standard as usual, but also capture
>> all the binary message(s) where the per-SV Az/El/SNR and phase residuals
>> are reported. This allows you to re-create the individual "1PPS" from each
>> SV used in the timing solution. Or maybe just use the RINEX data. This is
>> what I was referring to in the CORS reference to Brooke.
>> 
>> It would be "cheating" to know the eclipse path ahead of time and mine the
>> data for confirmation. Instead I dare you to blindly mine the GPS data for
>> all of August and then make a bold claim when and where the eclipse was,
>> like capturing a trace through a cloud chamber. Having done all that you
>> can "look in the back of the book" for the actual eclipse path to see how
>> right you were.
>> 
>> /tvb
>> 
>> - Original Message -
>> From: "Bob kb8tq" >
>> To: "Tom Van Baak" >; "Discussion of
>> precise time and frequency measurement" 
>>> 
>> Sent: Thursday, July 13, 2017 3:01 PM
>> Subject: Re: [time-nuts] WWVB & Eclipse
>> 
>> 
>> Hi
>> 
>> If one perhaps knew the path of the eclipse in advance *and* had a GPS
>> timing receiver that
>> could be set somehow to look at a single satellite….. all one would need
>> is a means of comparing
>> the output to a stable reference to *possibly* observe something
>> interesting.
>> 
>> More or less: You know the path of eclipse roaring along bashing the
>> ionosphere. You can (maybe)
>> pick a sat who’s signal traverses that region while getting to your
>> location during the eclipse. Yes, it’s
>> not original science. It might still be fun.
>> 
>> Bob
>> 
>> 
>> 
>>> On Jul 13, 2017, at 5:55 PM, Tom Van Baak  wrote:
>>> 
>>> Brooke,
>>> 
>>> Nice set of links. Thanks. There's a poster here with an overview:
>>> 
>>> https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_
>> Moses-Eclipse_Research_CEDAR_Poster.pdf
>>> 
 Is there a study based on GPS observations?
>>> 
>>> It will all be there for free in CORS. It's just a matter of mining the
>> data.
>>> Apparently this is done a lot. Here are some random examples of what can
>> be done. Pretty amazing.
>>> 
>>> https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
>>> http://www.gps.gov/cgsic/smg/2004/smith.pdf
>>> https://arxiv.org/pdf/1006.3565.pdf
>>> 
>>> Google for a subset of words like: CORS Ionosphere Monitoring Analysis
>> Modeling TEC
>>> 
>>> /tvb
>>> 
>>> - Original Message -
>>> From: "Brooke Clarke" >
>>> To: "Discussion of precise time and frequency measurement" <
>> time-nuts@febo.com >
>>> Sent: Thursday, July 13, 2017 1:35 PM
>>> Subject: [time-nuts] WWVB & Eclipse
>>> 
>>> 
 Hi:
 
 There's a massive experiment relating to the strength of WWVB and a
>> transmitter in Dixon California.
 
 https://www.washingtonpost.com/news/speaking-of-science/
>> wp/2017/07/12/a-massive-atmospheric-experiment-is-
>> planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
 
 http://eng.umb.edu/~eclipsemob/index.php > 7Eeclipsemob/index.php>
 
 http://www.hamsci.org/sites/default/files/publications/
>> 2017_IES_Liles.pdf
 This article says Dixon may transmit at 55.1 and 135.95 kHz.
 
 The EclipseMob receiver works with a smart phone acting as an SDR. as
>> well as the source of it's position and the
 date-time of observation.
 
 There is a parallel study based on ham radio WSPRNet and Reverse Beacon
>> Network.
 http://hamsci.org/
 
 Is there a study based on GPS observations?
 
 --
 Have Fun,
 
 Brooke Clarke, N6GCE
 http://www.PRC68.com
 http://www.end2partygovernment.com/2012Issues.html
 
 ___
 time-nuts mailing list -- time-nuts@febo.com 
 To unsubscribe, go to https://www.febo.com/cgi-bin/
>> mailman/listinfo/time-nuts
 and follow the instructions there.
>>> ___
>>> time-nuts mailing list -- time-nuts@febo.com 
>>> To unsubscribe, go to https://www.febo.com/cgi-bin/
>> mailman/listinfo/time-nuts
>>> and follow the instructions there.
>> 
>> ___
>> time-nuts mailing list -- time-nuts@febo.com 
>> To unsubscribe, go to https://www.febo.com/cgi-bin/
>> mailman/listinfo/time-nuts
>> and follow the instructions there.
>> 
> 
> 
> -- 
> William H Fite, PhD
> Independent Consultant
> Statistical Analysis 

Re: [time-nuts] WWVB & Eclipse

[William H. Fite]

Tom, are some specific hypotheses being tested or is this purely
exploratory?

Bill


On Thursday, July 13, 2017, Tom Van Baak  wrote:

> The trick is to just run the timing receiver in all-in-view mode
> collecting 1PPS data against your house standard as usual, but also capture
> all the binary message(s) where the per-SV Az/El/SNR and phase residuals
> are reported. This allows you to re-create the individual "1PPS" from each
> SV used in the timing solution. Or maybe just use the RINEX data. This is
> what I was referring to in the CORS reference to Brooke.
>
> It would be "cheating" to know the eclipse path ahead of time and mine the
> data for confirmation. Instead I dare you to blindly mine the GPS data for
> all of August and then make a bold claim when and where the eclipse was,
> like capturing a trace through a cloud chamber. Having done all that you
> can "look in the back of the book" for the actual eclipse path to see how
> right you were.
>
> /tvb
>
> - Original Message -
> From: "Bob kb8tq" >
> To: "Tom Van Baak" >; "Discussion of
> precise time and frequency measurement" 
> >
> Sent: Thursday, July 13, 2017 3:01 PM
> Subject: Re: [time-nuts] WWVB & Eclipse
>
>
> Hi
>
> If one perhaps knew the path of the eclipse in advance *and* had a GPS
> timing receiver that
> could be set somehow to look at a single satellite….. all one would need
> is a means of comparing
> the output to a stable reference to *possibly* observe something
> interesting.
>
> More or less: You know the path of eclipse roaring along bashing the
> ionosphere. You can (maybe)
> pick a sat who’s signal traverses that region while getting to your
> location during the eclipse. Yes, it’s
> not original science. It might still be fun.
>
> Bob
>
>
>
> > On Jul 13, 2017, at 5:55 PM, Tom Van Baak  wrote:
> >
> > Brooke,
> >
> > Nice set of links. Thanks. There's a poster here with an overview:
> >
> > https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_
> Moses-Eclipse_Research_CEDAR_Poster.pdf
> >
> >> Is there a study based on GPS observations?
> >
> > It will all be there for free in CORS. It's just a matter of mining the
> data.
> > Apparently this is done a lot. Here are some random examples of what can
> be done. Pretty amazing.
> >
> > https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
> > http://www.gps.gov/cgsic/smg/2004/smith.pdf
> > https://arxiv.org/pdf/1006.3565.pdf
> >
> > Google for a subset of words like: CORS Ionosphere Monitoring Analysis
> Modeling TEC
> >
> > /tvb
> >
> > - Original Message -
> > From: "Brooke Clarke" >
> > To: "Discussion of precise time and frequency measurement" <
> time-nuts@febo.com >
> > Sent: Thursday, July 13, 2017 1:35 PM
> > Subject: [time-nuts] WWVB & Eclipse
> >
> >
> >> Hi:
> >>
> >> There's a massive experiment relating to the strength of WWVB and a
> transmitter in Dixon California.
> >>
> >> https://www.washingtonpost.com/news/speaking-of-science/
> wp/2017/07/12/a-massive-atmospheric-experiment-is-
> planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
> >>
> >> http://eng.umb.edu/~eclipsemob/index.php  7Eeclipsemob/index.php>
> >>
> >> http://www.hamsci.org/sites/default/files/publications/
> 2017_IES_Liles.pdf
> >> This article says Dixon may transmit at 55.1 and 135.95 kHz.
> >>
> >> The EclipseMob receiver works with a smart phone acting as an SDR. as
> well as the source of it's position and the
> >> date-time of observation.
> >>
> >> There is a parallel study based on ham radio WSPRNet and Reverse Beacon
> Network.
> >> http://hamsci.org/
> >>
> >> Is there a study based on GPS observations?
> >>
> >> --
> >> Have Fun,
> >>
> >> Brooke Clarke, N6GCE
> >> http://www.PRC68.com
> >> http://www.end2partygovernment.com/2012Issues.html
> >>
> >> ___
> >> time-nuts mailing list -- time-nuts@febo.com 
> >> To unsubscribe, go to https://www.febo.com/cgi-bin/
> mailman/listinfo/time-nuts
> >> and follow the instructions there.
> > ___
> > time-nuts mailing list -- time-nuts@febo.com 
> > To unsubscribe, go to https://www.febo.com/cgi-bin/
> mailman/listinfo/time-nuts
> > and follow the instructions there.
>
> ___
> time-nuts mailing list -- time-nuts@febo.com 
> To unsubscribe, go to https://www.febo.com/cgi-bin/
> mailman/listinfo/time-nuts
> and follow the instructions there.
>


-- 
William H Fite, PhD
Independent Consultant
Statistical Analysis & Research Methods
___
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Re: [time-nuts] WWVB & Eclipse

[Tom Van Baak]

The trick is to just run the timing receiver in all-in-view mode collecting 
1PPS data against your house standard as usual, but also capture all the binary 
message(s) where the per-SV Az/El/SNR and phase residuals are reported. This 
allows you to re-create the individual "1PPS" from each SV used in the timing 
solution. Or maybe just use the RINEX data. This is what I was referring to in 
the CORS reference to Brooke.

It would be "cheating" to know the eclipse path ahead of time and mine the data 
for confirmation. Instead I dare you to blindly mine the GPS data for all of 
August and then make a bold claim when and where the eclipse was, like 
capturing a trace through a cloud chamber. Having done all that you can "look 
in the back of the book" for the actual eclipse path to see how right you were.

/tvb

- Original Message - 
From: "Bob kb8tq" 
To: "Tom Van Baak" ; "Discussion of precise time and 
frequency measurement" 
Sent: Thursday, July 13, 2017 3:01 PM
Subject: Re: [time-nuts] WWVB & Eclipse


Hi

If one perhaps knew the path of the eclipse in advance *and* had a GPS timing 
receiver that 
could be set somehow to look at a single satellite….. all one would need is a 
means of comparing
the output to a stable reference to *possibly* observe something interesting. 

More or less: You know the path of eclipse roaring along bashing the 
ionosphere. You can (maybe)
pick a sat who’s signal traverses that region while getting to your location 
during the eclipse. Yes, it’s 
not original science. It might still be fun. 

Bob



> On Jul 13, 2017, at 5:55 PM, Tom Van Baak  wrote:
> 
> Brooke,
> 
> Nice set of links. Thanks. There's a poster here with an overview:
> 
> https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_Moses-Eclipse_Research_CEDAR_Poster.pdf
> 
>> Is there a study based on GPS observations?
> 
> It will all be there for free in CORS. It's just a matter of mining the data.
> Apparently this is done a lot. Here are some random examples of what can be 
> done. Pretty amazing.
> 
> https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
> http://www.gps.gov/cgsic/smg/2004/smith.pdf
> https://arxiv.org/pdf/1006.3565.pdf
> 
> Google for a subset of words like: CORS Ionosphere Monitoring Analysis 
> Modeling TEC
> 
> /tvb
> 
> - Original Message - 
> From: "Brooke Clarke" 
> To: "Discussion of precise time and frequency measurement" 
> 
> Sent: Thursday, July 13, 2017 1:35 PM
> Subject: [time-nuts] WWVB & Eclipse
> 
> 
>> Hi:
>> 
>> There's a massive experiment relating to the strength of WWVB and a 
>> transmitter in Dixon California.
>> 
>> https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/12/a-massive-atmospheric-experiment-is-planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
>> 
>> http://eng.umb.edu/~eclipsemob/index.php 
>> 
>> 
>> http://www.hamsci.org/sites/default/files/publications/2017_IES_Liles.pdf
>> This article says Dixon may transmit at 55.1 and 135.95 kHz.
>> 
>> The EclipseMob receiver works with a smart phone acting as an SDR. as well 
>> as the source of it's position and the 
>> date-time of observation.
>> 
>> There is a parallel study based on ham radio WSPRNet and Reverse Beacon 
>> Network.
>> http://hamsci.org/
>> 
>> Is there a study based on GPS observations?
>> 
>> -- 
>> Have Fun,
>> 
>> Brooke Clarke, N6GCE
>> http://www.PRC68.com
>> http://www.end2partygovernment.com/2012Issues.html
>> 
>> ___
>> time-nuts mailing list -- time-nuts@febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

___
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Re: [time-nuts] WWVB & Eclipse

[Bob kb8tq]

Hi

If one perhaps knew the path of the eclipse in advance *and* had a GPS timing 
receiver that 
could be set somehow to look at a single satellite….. all one would need is a 
means of comparing
the output to a stable reference to *possibly* observe something interesting. 

More or less: You know the path of eclipse roaring along bashing the 
ionosphere. You can (maybe)
pick a sat who’s signal traverses that region while getting to your location 
during the eclipse. Yes, it’s 
not original science. It might still be fun. 

Bob



> On Jul 13, 2017, at 5:55 PM, Tom Van Baak  wrote:
> 
> Brooke,
> 
> Nice set of links. Thanks. There's a poster here with an overview:
> 
> https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_Moses-Eclipse_Research_CEDAR_Poster.pdf
> 
>> Is there a study based on GPS observations?
> 
> It will all be there for free in CORS. It's just a matter of mining the data.
> Apparently this is done a lot. Here are some random examples of what can be 
> done. Pretty amazing.
> 
> https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
> http://www.gps.gov/cgsic/smg/2004/smith.pdf
> https://arxiv.org/pdf/1006.3565.pdf
> 
> Google for a subset of words like: CORS Ionosphere Monitoring Analysis 
> Modeling TEC
> 
> /tvb
> 
> - Original Message - 
> From: "Brooke Clarke" 
> To: "Discussion of precise time and frequency measurement" 
> 
> Sent: Thursday, July 13, 2017 1:35 PM
> Subject: [time-nuts] WWVB & Eclipse
> 
> 
>> Hi:
>> 
>> There's a massive experiment relating to the strength of WWVB and a 
>> transmitter in Dixon California.
>> 
>> https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/12/a-massive-atmospheric-experiment-is-planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
>> 
>> http://eng.umb.edu/~eclipsemob/index.php 
>> 
>> 
>> http://www.hamsci.org/sites/default/files/publications/2017_IES_Liles.pdf
>> This article says Dixon may transmit at 55.1 and 135.95 kHz.
>> 
>> The EclipseMob receiver works with a smart phone acting as an SDR. as well 
>> as the source of it's position and the 
>> date-time of observation.
>> 
>> There is a parallel study based on ham radio WSPRNet and Reverse Beacon 
>> Network.
>> http://hamsci.org/
>> 
>> Is there a study based on GPS observations?
>> 
>> -- 
>> Have Fun,
>> 
>> Brooke Clarke, N6GCE
>> http://www.PRC68.com
>> http://www.end2partygovernment.com/2012Issues.html
>> 
>> ___
>> time-nuts mailing list -- time-nuts@febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

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Re: [time-nuts] WWVB & Eclipse

[Tom Van Baak]

Brooke,

Nice set of links. Thanks. There's a poster here with an overview:

https://cedarweb.vsp.ucar.edu/wiki/images/6/60/Magdalina_Moses-Eclipse_Research_CEDAR_Poster.pdf

> Is there a study based on GPS observations?

It will all be there for free in CORS. It's just a matter of mining the data.
Apparently this is done a lot. Here are some random examples of what can be 
done. Pretty amazing.

https://www.ngs.noaa.gov/PUBS_LIB/2005_01_ION_NTM_Ionosphere.pdf
http://www.gps.gov/cgsic/smg/2004/smith.pdf
https://arxiv.org/pdf/1006.3565.pdf

Google for a subset of words like: CORS Ionosphere Monitoring Analysis Modeling 
TEC

/tvb

- Original Message - 
From: "Brooke Clarke" 
To: "Discussion of precise time and frequency measurement" 
Sent: Thursday, July 13, 2017 1:35 PM
Subject: [time-nuts] WWVB & Eclipse


> Hi:
> 
> There's a massive experiment relating to the strength of WWVB and a 
> transmitter in Dixon California.
> 
> https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/12/a-massive-atmospheric-experiment-is-planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6
> 
> http://eng.umb.edu/~eclipsemob/index.php 
> 
> 
> http://www.hamsci.org/sites/default/files/publications/2017_IES_Liles.pdf
> This article says Dixon may transmit at 55.1 and 135.95 kHz.
> 
> The EclipseMob receiver works with a smart phone acting as an SDR. as well as 
> the source of it's position and the 
> date-time of observation.
> 
> There is a parallel study based on ham radio WSPRNet and Reverse Beacon 
> Network.
> http://hamsci.org/
> 
> Is there a study based on GPS observations?
> 
> -- 
> Have Fun,
> 
> Brooke Clarke, N6GCE
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
> 
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[time-nuts] WWVB & Eclipse

[Brooke Clarke]

Hi:

There's a massive experiment relating to the strength of WWVB and a transmitter 
in Dixon California.

https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/12/a-massive-atmospheric-experiment-is-planned-for-august-solar-eclipse/?utm_term=.4d7101b869f6

http://eng.umb.edu/~eclipsemob/index.php 


http://www.hamsci.org/sites/default/files/publications/2017_IES_Liles.pdf
This article says Dixon may transmit at 55.1 and 135.95 kHz.

The EclipseMob receiver works with a smart phone acting as an SDR. as well as the source of it's position and the 
date-time of observation.


There is a parallel study based on ham radio WSPRNet and Reverse Beacon Network.
http://hamsci.org/

Is there a study based on GPS observations?

--
Have Fun,

Brooke Clarke, N6GCE
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

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Re: [time-nuts] A milestone approaches

[Bob kb8tq]

Hi

I’ll put that on my calendar right away :)

Yet another potential bug to check for in MJD code ….

Bob

> On Jul 13, 2017, at 1:51 PM, Peter Vince  wrote:
> 
> 2038 could be an "interesting" year - on the 22nd of April, the MJD hits
> 65535  (2^16-1) !
> 
> 
> On 12 July 2017 at 13:19, Tom Van Baak  wrote:
> 
>> Thanks for the notice. Add these to your list:
>> 
> 
> 
> 
>> 2147483648 0x8000 Tue Jan 19 03:14:08 2038 GMT (you survived)
>> 
>> While we're at it, we have a rare T&F MJD event coming in 2023:
>> 
>> 1968-05-24 00:00:00 UTC (DOY = 145, Fri) = JD 244.5 = MJD 4.0
>> 1995-10-10 00:00:00 UTC (DOY = 283, Tue) = JD 245.5 = MJD 5.0
>> 2023-02-25 00:00:00 UTC (DOY =  56, Sat) = JD 246.5 = MJD 6.0
>> 
>> /tvb
>> 
>> 
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Re: [time-nuts] A milestone approaches

[Peter Vince]

2038 could be an "interesting" year - on the 22nd of April, the MJD hits
65535  (2^16-1) !


On 12 July 2017 at 13:19, Tom Van Baak  wrote:

> Thanks for the notice. Add these to your list:
> 



> 2147483648 0x8000 Tue Jan 19 03:14:08 2038 GMT (you survived)
>
> While we're at it, we have a rare T&F MJD event coming in 2023:
>
> 1968-05-24 00:00:00 UTC (DOY = 145, Fri) = JD 244.5 = MJD 4.0
> 1995-10-10 00:00:00 UTC (DOY = 283, Tue) = JD 245.5 = MJD 5.0
> 2023-02-25 00:00:00 UTC (DOY =  56, Sat) = JD 246.5 = MJD 6.0
>
> /tvb
>
>
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Re: [time-nuts] Happy Palindromic Days, m-dd-yyyy format

[Mike Cook]

> Le 12 juil. 2017 à 22:02, Gregory Beat  a écrit :
> 
> A palindrome is a word, phrase, number, or other sequence of characters which 
> reads the same backward as forward, such as the words: madam, racecar, or 
> tattarrattat.
> 
> Palindrome Days start with July 10, through July 19.
> https://www.timeanddate.com/date/palindrome-day.html
> 
> 7-10-17 backwards is 7-10-17
> 7-19-17 backwards is 7-19-17

Interestingly the first of those is also valid for October for DMY readers but  
10-7-17 isn’t, so on this side of the pond we’re waiting for 7-10-2017, which 
is also palindromic. 

> ==
> w9gb
> Sent from iPad Air
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"The power of accurate observation is commonly called cynicism by those who 
have not got it. »
George Bernard Shaw

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