Hello,
Further to my previous message I now understand that the L-band frequs do not carry positional Information and that the latter can be found on the C-band only..
I am still after positional data which can be made visible by Planeplotter, i.e. the respective locations over oceans etc.
I am sure many of the Aero "fans" know on which frequencies and at which Bauds positional data is transmitted and how to make Planeplotter access and show this data on maps/charts.
Would you kindly disclose to me this information ?
Thanks in advance,
Regards,
Roland

Roland,

I suggest you ask these questions in the Plane Plotter group  https://groups.io/g/planeplotter

The following may help

http://jontio.zapto.org/hda1/AERO-Cband-burst-March-2016-Europe.pdf

https://www.coaa.co.uk/Receiving%20and%20decoding%20multiple%20C.pdf

http://planeplotter.pbworks.com/w/file/fetch/118938423/Receiving%20and%20decoding%20C-band%20Inmarsat.pdf

Note that for Alphasat you will need a least an 1.8m or 2.4m dia dish to get a good signal for decoding

Paul

​

On 18/01/2019 at 10:16, Roland Fechter <fly-fechter@...> wrote:

Hello,
Further to my previous message I now understand that the L-band frequs do not carry positional Information and that the latter can be found on the C-band only..
I am still after positional data which can be made visible by Planeplotter, i.e. the respective locations over oceans etc.
I am sure many of the Aero "fans" know on which frequencies and at which Bauds positional data is transmitted and how to make Planeplotter access and show this data on maps/charts.
Would you kindly disclose to me this information ?
Thanks in advance,
Regards,
Roland

Thank you, Paul !

What is your location, please ? Do you get your data from 215E Alphasat ??

How big and what kind of dish do you use ?

Do you happen to be able to receive at your location POSITIONAL data of aircraft ?

If so, would you mind to tell me the respective frequencies including Bauds ?

And lastly .......do they show clear, uncoded plain positions, e.g. N.........E........ readable by Planeplotter via Jaero ?

Sorry to bother you again, however your reply to these questions would be most appreciated by me !

Regards,

Roland

Am 18.01.2019 um 12:00 schrieb Paul Gulliver:

Roland,

I suggest you ask these questions in the Plane Plotter group  https://groups.io/g/planeplotter

The following may help

http://jontio.zapto.org/hda1/AERO-Cband-burst-March-2016-Europe.pdf

https://www.coaa.co.uk/Receiving%20and%20decoding%20multiple%20C.pdf

http://planeplotter.pbworks.com/w/file/fetch/118938423/Receiving%20and%20decoding%20C-band%20Inmarsat.pdf

Note that for Alphasat you will need a least an 1.8m or 2.4m dia dish to get a good signal for decoding

Paul

​

On 18/01/2019 at 10:16, Roland Fechter <fly-fechter@...> wrote:

Hello,
Further to my previous message I now understand that the L-band frequs do not carry positional Information and that the latter can be found on the C-band only..
I am still after positional data which can be made visible by Planeplotter, i.e. the respective locations over oceans etc.
I am sure many of the Aero "fans" know on which frequencies and at which Bauds positional data is transmitted and how to make Planeplotter access and show this data on maps/charts.
Would you kindly disclose to me this information ?
Thanks in advance,
Regards,
Roland

On Jan 19, 2019, at 1:38 AM, Patrick Lindecker <f6cte@...> wrote:

Roger and all,

If you click on the "Frequencies" command on top of the RX/TX screen, you
will have all the frequencies (as far as I know them) for all the Multipsk
decoded modes.

For 4485 it is only transmitted a repeated test sentence (by French or
Italian navy if I remember well). Nothing really exciting.

For LF transmissions, apart from Multipsk, you have also time stations
decoded by Clock (for example WWVB, see below, extracted from the paper from

"WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio").

"NIST radio station WWVB, which today serves as the synchronization source
for tens of millions of radio controlled clocks, began operation from its
present location near Fort Collins, Colorado at 0 hours, 0 minutes Universal
Time on July 5, 1963. Thus, the year 2013 marked the station’s 50th
anniversary, a half century of delivering frequency and time signals
referenced to the national standard to the United States public. One of the
best known and most widely used measurement services provided by the U. S.
government, WWVB has spanned and survived numerous technological eras. Based
on technology that was already mature and well established when the station
began broadcasting in 1963, WWVB later benefitted from the miniaturization
of electronics and the advent of the microprocessor, which made low cost
radio controlled clocks possible that would work indoors. "

73
Patrick


-----Message d'origine-----
De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Roger
Envoyé : samedi 19 janvier 2019 00:16
À : multipsk@groups.io
Objet : [multipsk] 110A and 4485

I would like to try out these modes.
For testing the RX function, does anyone know of frequencies where stations
are transmitting the submodes that Multipsk can decode? LF stations that can
be received in west coast Canada would be best.
Thank you.



---
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

On Jan 19, 2019, at 1:38 AM, Patrick Lindecker <f6cte@...> wrote:

Roger and all,

If you click on the "Frequencies" command on top of the RX/TX screen, you
will have all the frequencies (as far as I know them) for all the Multipsk
decoded modes.

For 4485 it is only transmitted a repeated test sentence (by French or
Italian navy if I remember well). Nothing really exciting.

For LF transmissions, apart from Multipsk, you have also time stations
decoded by Clock (for example WWVB, see below, extracted from the paper from

"WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio").

"NIST radio station WWVB, which today serves as the synchronization source
for tens of millions of radio controlled clocks, began operation from its
present location near Fort Collins, Colorado at 0 hours, 0 minutes Universal
Time on July 5, 1963. Thus, the year 2013 marked the station’s 50th
anniversary, a half century of delivering frequency and time signals
referenced to the national standard to the United States public. One of the
best known and most widely used measurement services provided by the U. S.
government, WWVB has spanned and survived numerous technological eras. Based
on technology that was already mature and well established when the station
began broadcasting in 1963, WWVB later benefitted from the miniaturization
of electronics and the advent of the microprocessor, which made low cost
radio controlled clocks possible that would work indoors. "

73
Patrick


-----Message d'origine-----
De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Roger
Envoyé : samedi 19 janvier 2019 00:16
À : multipsk@groups.io
Objet : [multipsk] 110A and 4485

I would like to try out these modes.
For testing the RX function, does anyone know of frequencies where stations
are transmitting the submodes that Multipsk can decode? LF stations that can
be received in west coast Canada would be best.
Thank you.



---
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

On Jan 19, 2019, at 1:38 AM, Patrick Lindecker <f6cte@...> wrote:

Roger and all,

If you click on the "Frequencies" command on top of the RX/TX screen,
you will have all the frequencies (as far as I know them) for all the
Multipsk decoded modes.

For 4485 it is only transmitted a repeated test sentence (by French or
Italian navy if I remember well). Nothing really exciting.

For LF transmissions, apart from Multipsk, you have also time stations
decoded by Clock (for example WWVB, see below, extracted from the
paper from

"WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio").

"NIST radio station WWVB, which today serves as the synchronization
source for tens of millions of radio controlled clocks, began
operation from its present location near Fort Collins, Colorado at 0
hours, 0 minutes Universal Time on July 5, 1963. Thus, the year 2013
marked the station’s 50th anniversary, a half century of delivering
frequency and time signals referenced to the national standard to the
United States public. One of the best known and most widely used measurement services provided by the U. S.
government, WWVB has spanned and survived numerous technological eras.
Based on technology that was already mature and well established when
the station began broadcasting in 1963, WWVB later benefitted from the
miniaturization of electronics and the advent of the microprocessor,
which made low cost radio controlled clocks possible that would work indoors. "

73
Patrick


-----Message d'origine-----
De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de
Roger Envoyé : samedi 19 janvier 2019 00:16 À : multipsk@groups.io
Objet : [multipsk] 110A and 4485

I would like to try out these modes.
For testing the RX function, does anyone know of frequencies where
stations are transmitting the submodes that Multipsk can decode? LF
stations that can be received in west coast Canada would be best.
Thank you.



---
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

On Jan 23, 2019, at 10:57 AM, Patrick Lindecker <f6cte@...> wrote:

Hello Roger,

12000 Hz is the internal sampling frequency. Modern cards are 48 KHz sampling frequency and not 44,1 KHz as 20 years before. They are now, in general, quite precise.

You can test your sound card: click on the "Adjustments" menu button, select the "Determination of the RX/TX sound-card sampling frequencies" option and push on the "Determination of the 48 KHz RX sampling frequency (test on 3 minutes)" button. 
If the sampling frequency is close to 48000 Hz, better is to select 48000 Hz.

At the end of the test, click on "Return".

73
Patrick



-----Message d'origine-----
De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Roger
Envoyé : mercredi 23 janvier 2019 02:03
À : multipsk@groups.io
Objet : Re: [multipsk] 110A and 4485 - WWVB

Patrick,

Do I understand correctly that to use the 110A mode in Multipsk the soundcard must be (or optimally should be) running at 12000 Hz sampling rate? Or are multiples of that OK (e.g. 48,000, 96,000)?

Thank you.

Roger

On Jan 19, 2019, at 1:38 AM, Patrick Lindecker <f6cte@...> wrote:

Roger and all,

If you click on the "Frequencies" command on top of the RX/TX screen, 
you will have all the frequencies (as far as I know them) for all the 
Multipsk decoded modes.

For 4485 it is only transmitted a repeated test sentence (by French or 
Italian navy if I remember well). Nothing really exciting.

For LF transmissions, apart from Multipsk, you have also time stations 
decoded by Clock (for example WWVB, see below, extracted from the 
paper from

"WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio").

"NIST radio station WWVB, which today serves as the synchronization 
source for tens of millions of radio controlled clocks, began 
operation from its present location near Fort Collins, Colorado at 0 
hours, 0 minutes Universal Time on July 5, 1963. Thus, the year 2013 
marked the station’s 50th anniversary, a half century of delivering 
frequency and time signals referenced to the national standard to the 
United States public. One of the best known and most widely used measurement services provided by the U. S.
government, WWVB has spanned and survived numerous technological eras. 
Based on technology that was already mature and well established when 
the station began broadcasting in 1963, WWVB later benefitted from the 
miniaturization of electronics and the advent of the microprocessor, 
which made low cost radio controlled clocks possible that would work indoors. "

73
Patrick


-----Message d'origine-----
De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de 
Roger Envoyé : samedi 19 janvier 2019 00:16 À : multipsk@groups.io 
Objet : [multipsk] 110A and 4485

I would like to try out these modes.
For testing the RX function, does anyone know of frequencies where 
stations are transmitting the submodes that Multipsk can decode? LF 
stations that can be received in west coast Canada would be best.
Thank you.



---
L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus