Date   

Re: Re help with Eitelsat 10

diogenes1@...
 

Thank you Ernst, I was more or less aware of that but I was trying to get my head around why the beacon frequency of 10.95GHz comes out as the frequency of 1.2GHz in David's image, I was trying to fathom the relationship between the dish receiving frequency and the frequency from the LNB after down convertion which appears at my computer. In other words how can you calculate the frequency output of the LNB from the input frequency received at the dish, which is certainly not a linear relationship.

Regards, Peter


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30 May 2021, 13:13 by ernst.lobsiger@...:

Peter,

Your LNB has a LOW band with Input 10.7 ..11.70 GHz using a Local Oscillator frequency of LO=9.75GHz. Your output is Intermediate Frequency IF = Input - LO    (= 950..1950MHz)
Your LNB has a HIGH band with Input 11.7 ..12.75 GHz using a Local Oscillator frequency of LO=10.6GHz. Your output is Intermediate Frequency IF = Input - LO    (=1100..2150MHz)

LOW and HIGH band is switched with 0 and 22KHz tone (by your receiver, EUMETCast T1,T2 is LOW band)
Vertical and Horizontal polarisation is switched with 13V = V and 18V=H (power supplied by your TC receiver)

Hope this helps
Ernst


Re: Re help with Eitelsat 10

Ernst Lobsiger
 

Peter,

Your LNB has a LOW band with Input 10.7 ..11.70 GHz using a Local Oscillator frequency of LO=9.75GHz. Your output is Intermediate Frequency IF = Input - LO    (= 950..1950MHz)
Your LNB has a HIGH band with Input 11.7 ..12.75 GHz using a Local Oscillator frequency of LO=10.6GHz. Your output is Intermediate Frequency IF = Input - LO    (=1100..2150MHz)

LOW and HIGH band is switched with 0 and 22KHz tone (by your receiver, EUMETCast T1,T2 is LOW band)
Vertical and Horizontal polarisation is switched with 13V = V and 18V=H (power supplied by your TC receiver)

Hope this helps
Ernst


Re: Re help with Eitelsat 10

diogenes1@...
 

Hello all and particularly David. My LNB is an Inverto with an input, I think, of 10.7-11.7GHz giving an output of 0.950 - 1.950GHz. If the beacon is transmitting on 10.95GHz why is its output frequency 1.2GHz and not a lower frequency? I can only guess that the relationship between the output and input frequencies is not linear but follows some peculiar curve - just a guess.

Regards, Peter

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30 May 2021, 08:25 by david-taylor@...:

On 29/05/2021 21:57, Hendrik Fleming wrote:
IMHO instead of looking and waiting for transponder-lock, a better and quicker way, if you have a spectrum analyzer, is just to look for the beacon. For Eutelsat 10, the beacon is at 10950MHz.

Or, if you don't happen to have a 10 GHz spectrum analyser, use the "loop out" feed from your cheap TBS5925 and send it to an RTL-SDR dongle. Here I'm using SDR# as the receiver software. Not surprisingly, my LNB doesn't deliver exactly the expected 1,200 MHz beacon IF. I used BDADataEx to set the LNB for horizontal polarisation.

Nice strong signal, though!

Be sure to do your final adjustments to optimise the link margin especially if want to take HVS-2.

Cheers,
David
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Web: https://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv





Re: Missing packets

Ernst Lobsiger
 

On Sun, May 30, 2021 at 12:30 AM, Daniele Guardigli wrote:
I'm experiencing a lot of missed packets like never before and I didn't change anything in my configuration. The setup is made up of Laptop with i7 2.2Ghz, 16GB Ram, TBS5927, hub usb with 1tb ext hdd and tellicast eku.
Thanks.
 
 
Daniele Guardigli
Daniele,

from your first post it even seems you use an external usb hub with a 1GB external HDD attached. If your TelliCast client file system directly goes to this HDD then I'd suspect the USB system (with Receiver, EKU, HDD is kind of overloaded). If the system ran fine for some time but then suddenly almost stopped working, then again check your external HDD for CMR versus SMR recording. It *MUST* be CMR. Unfortunately not all manufacturers specify that. If your HDD has a large buffer (disk cache memory) like 128 - 256MB then this points to SMR.

Ernst


Re: Missing packets

Ernst Lobsiger
 

Daniele,

if you still have the packet loss problem on BAS with SNR=12.7dB then all we can say it's not because of low link margin.
The next culprit often is your harddisk especially if used by other apps. Are you sure your HDD is using CMR recording?
What exactly is the model of your HDD? If the problem is on BAS only while HVS-1 has no problem: Do you use different
HDDs or disk partitions for BAS and HVS-1? For CMR versus SMR recording search this list ...

Regards,
Ernst

P.S. It's also good practice to check the logs of your TC clients. Something unusual found in there?


Re: Missing packets

Daniele Guardigli
 

Ok I understand, regarding hvs-1, but the issue I wrote before was on bas. The link margin should be enough for that


Il Dom 30 Mag 2021, 10:10 Ernst Lobsiger via groups.io <ernst.lobsiger=belponline.ch@groups.io> ha scritto:
On Sun, May 30, 2021 at 12:51 AM, Daniele Guardigli wrote:
what is the link margin? I'm a complete dummy :-) 
 
Daniele,

Your SNR is 12.7 dB. HVS-1 should work with missed packets then and when. For Link Margin (LM) see:

https://groups.io/g/MSG-1/message/31306

Regards,
Ernst


Re: Missing packets

Ernst Lobsiger
 

On Sun, May 30, 2021 at 12:51 AM, Daniele Guardigli wrote:
what is the link margin? I'm a complete dummy :-) 
 
Daniele,

Your SNR is 12.7 dB. HVS-1 should work with missed packets then and when. For Link Margin (LM) see:

https://groups.io/g/MSG-1/message/31306

Regards,
Ernst


Re: Missing packets

Daniele Guardigli
 

Sorry David,

what is the link margin? I'm a complete dummy :-) 

Anyway attached there's my TBS screenshot.

Daniele
Immagine 2021-05-30 095114.jpg

Il giorno dom 30 mag 2021 alle ore 09:38 David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor=blueyonder.co.uk@groups.io> ha scritto:
On 30/05/2021 08:29, Daniele Guardigli wrote:
> Hi to all,
>
> I'm experiencing a lot of missed packets like never before and I didn't
> change anything in my configuration. The setup is made up of Laptop with
> i7 2.2Ghz, 16GB Ram, TBS5927, hub usb with 1tb ext hdd and tellicast eku.
> Thanks.
>
>
> Daniele Guardigli

Daniele,

What is your link margin?  Perhaps the antenna alignment has slipped?

Cheers,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv







--
Daniele Guardigli


Re: Missing packets

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 30/05/2021 08:29, Daniele Guardigli wrote:
Hi to all,
I'm experiencing a lot of missed packets like never before and I didn't change anything in my configuration. The setup is made up of Laptop with i7 2.2Ghz, 16GB Ram, TBS5927, hub usb with 1tb ext hdd and tellicast eku.
Thanks.
Daniele Guardigli
Daniele,

What is your link margin? Perhaps the antenna alignment has slipped?

Cheers,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv


Missing packets

Daniele Guardigli
 

Hi to all,

I'm experiencing a lot of missed packets like never before and I didn't change anything in my configuration. The setup is made up of Laptop with i7 2.2Ghz, 16GB Ram, TBS5927, hub usb with 1tb ext hdd and tellicast eku.
Thanks.


Daniele Guardigli


Re: Re help with Eitelsat 10

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 29/05/2021 21:57, Hendrik Fleming wrote:
IMHO instead of looking and waiting for transponder-lock, a better and quicker way, if you have a spectrum analyzer, is just to look for the beacon. For Eutelsat 10, the beacon is at 10950MHz.
Or, if you don't happen to have a 10 GHz spectrum analyser, use the "loop out" feed from your cheap TBS5925 and send it to an RTL-SDR dongle. Here I'm using SDR# as the receiver software. Not surprisingly, my LNB doesn't deliver exactly the expected 1,200 MHz beacon IF. I used BDADataEx to set the LNB for horizontal polarisation.

Nice strong signal, though!

Be sure to do your final adjustments to optimise the link margin especially if want to take HVS-2.

Cheers,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv


Re: Re help with Eitelsat 10

Hendrik Fleming
 

IMHO instead of looking and waiting for transponder-lock, a better and quicker way, if you have a spectrum analyzer, is just to look for the beacon. For Eutelsat 10, the beacon is at 10950MHz. 


Re: Anyone selling DVB hardware?

Hendrik Fleming
 

I use a tbs-6903, dual tuner, so you can receive basic and HVS-1 on the one tuner and HVS-2 on the second tuner. It is PCIe, just be aware of what motherboard you use with it. My computers are all 10+year olds. First PC I tried with it, a 2007 Dell Poweredge with a intel-due processor, didn’t work, second computer was based on an Asus motherboard from 2012, and that worked quite fine. Lots of people selling the TBS-6903 cards on e-bay.


Re: Anyone selling DVB hardware?

Ernst Lobsiger
 

Dear All

The TechniSat SkyStar 2 eXpress HD still has its EUMETSAT setup guide.
While it will not work under current Windows any more it's an excellent
receiver (Basic Service only!) under GNU/Linux using the TBS OS drivers.
EUMETCast reception is not impaired in any way by low HVS-1 link margins.

https://www.technisat.com/de_DE/Produktdatenblatt/352-775/?product=2418

The Technisat SkyStar USB HD is the exact equivalent of the above card.
For a short time only this box even made it into the above EUMETSAT guide.
It was then deleted from the guide as it never worked under Windows XP/7.

https://www.technisat.com/de_DE/Produktdatenblatt/352-775/?product=1648

I have not had an USB box running for the last 10 years. Technically those
lag behind the possibilities of PCIe cards. But of course if you use a LapTop
or an other minimalistic PC a PCIe card won't fly. Just for curiosity, after
all these years, I bought a 20 Euro Technisat SkyStar USB HD from www.eBay.de.
I had it up and running within 10 minutes and it works as fine as the PCIe card.
As CrazyCat is now involved in maintaining the TBS OS drivers, his tricks from
2014 have made it into the official TBS github repo. All you need is to put the
firmware file  "dvb-usb-SkyStar_USB_HD_FW_v17_63.HEX.fw"  into /lib/firmware/.
You find this file in the *.tar.bz2 archive of firmware linked by TBS on their
github page as well. The firmware file can also be found on this LinuxTV page:

https://www.linuxtv.org/wiki/index.php/Technisat_SkyStar_USB_HD

Both the PCIe card and the USB box are now regularly offered on www.eBay.de or on
eBay Kleinanzeigen (usually Germany only) for 0-50 Euros. For those who intend to
experiment with EUMETCast on GNU/Linux both receivers are a cheap starting point.


Best Regards,
Ernst


P.S.
There are new low cost PCIe and USB receivers in the TBS pipeline. Whether
these work for EUMETCast has yet to be seen. As always it's mainly a driver
problem. The best PCIe solution found today is a TBS-6909X under GNU/Linux.
BEWARE: Before you buy and try this card under Windows 10 ask Graham Woolf.


Re: tellicast on linux

Youssef Bennouna
 

Hi Ernst

Thanks a lot, Ernst for your advice and also thank you for the link to the YouTube tutorial. It’s much clearer now.

I will try someday to make a tutorial like this one, not in Chinese, to help others get started on CentOs.

Have a nice weekend

 

 

 

Youssef Bennouna

ETUDES ET MESURES LES 5 DOMAINES

 

Villa 176, Bassatine El Menzeh

12123 - EL MENZEH

MAROC

TEL :  (+212)    0537 01 14 41

GSM :  (+212) 0661 10 97 43

 

De : MSG-1@groups.io [mailto:MSG-1@groups.io] De la part de Ernst Lobsiger via groups.io
Envoyé : vendredi 28 mai 2021 06:18
À : MSG-1@groups.io
Objet : Re: [MSG-1] tellicast on linux

 

Youssef,

it's a long time back I used Redhat. My receivers run on Debian or Devuan (preferred). But you sound like experienced and if CentOS is your choice stay with it.
AFAIK the top shots of EUMETSAT use Redhat and CentOS. So you will get the needed RPMs. If you already installed the drivers you should have done what this

https://www.tbsiptv.com/tbs-tv-tuner-usb/tbs-tv-tuner-usb-dvb-s2/tbs5927-professional-dvb-s2-tv-tuner-usb

video shows. If you installed and run the "Weather Research and Forcasting Model (WFM)" you might even have more than one PC standing around. Then
I recommend to use some old PC HW and do your TelliCast experiments from scratch. dvblast is a useful tool for testing but not needed for EUMETCast.
If the driver is working: The very basic things you use is dvb-apps and dvb-eumetcast. Then you should already see the IP packets arrive on IF dvbond0

Best Regards,

Ernst

P.S. Many if not most of us are in their 60ties or 70ties ... GNU/Linux is a good tool to keep your brain going :-)


AYECKA SR1 DVB-S2

jevgenijs.ugorenko@...
 

Hello to all!

We are using TelliCast 2.14. installed on Centos 7.
Not along time ago from Our AYECKA SR1 DVB-S2 started receiving this kind of log messages: WARNING: Cannot read the current MODCOD value.
And this kind of messages are coming with every 1 second interval when we are connecting to Ayecka through the telnet.
But, we are receiving all SAT files.

What it is needed to be done with Ayecka? Is it broken and if future we can't receiving anymore data? Or we need to buy new one and put it instead?
I have tried to seek this solution in web, unfortunately there is no information about that problem.


Moonlight Serenade

Ernst Lobsiger
 

Hi All,

here is the original from the 40ties:  https://www.youtube.com/watch?v=0PB6b1OiDKg

.. and here is the PyTROLL/Satpy version with a 10$ GNU/Linux receiver from tonight:



Regards,
Ernst


Re: tellicast on linux

Ernst Lobsiger
 

Youssef,

it's a long time back I used Redhat. My receivers run on Debian or Devuan (preferred). But you sound like experienced and if CentOS is your choice stay with it.
AFAIK the top shots of EUMETSAT use Redhat and CentOS. So you will get the needed RPMs. If you already installed the drivers you should have done what this

https://www.tbsiptv.com/tbs-tv-tuner-usb/tbs-tv-tuner-usb-dvb-s2/tbs5927-professional-dvb-s2-tv-tuner-usb

video shows. If you installed and run the "Weather Research and Forcasting Model (WFM)" you might even have more than one PC standing around. Then
I recommend to use some old PC HW and do your TelliCast experiments from scratch. dvblast is a useful tool for testing but not needed for EUMETCast.
If the driver is working: The very basic things you use is dvb-apps and dvb-eumetcast. Then you should already see the IP packets arrive on IF dvbond0

Best Regards,

Ernst

P.S. Many if not most of us are in their 60ties or 70ties ... GNU/Linux is a good tool to keep your brain going :-)


Re: tellicast on linux

Youssef Bennouna
 

Thank you, Ernst,
Your tips are always very useful. For the moment I have a part of this (Tellicast running, the driver for the tbs5927 installed, I am compiling dvblast...) and  I will start tomorrow working on the others you mentioned.
I know it's much more complicated to install the system on Linux, but what a feeling when you succeed!
I am not very new to Linux, I have some experience with WRF and some other modelling tools that work on Linux, but I am very new to Eumetcast and satellite imaging. So I have a lot to learn...I know.
I will keep you informed of my progress, If any :) I am not very young but still trying.
Thank you again

Youssef BENNOUNA
Études et Mesures les 5 Domaines


Le ven. 28 mai 2021 à 00:23, Ernst Lobsiger via groups.io <ernst.lobsiger=belponline.ch@groups.io> a écrit :
On Thu, May 27, 2021 at 01:56 PM, Youssef Bennouna wrote:
Dear all,
I have installed tellicast and other software programs on a windows10 computer, everything is fine thanks to Ernst and David . Now I want to do the same on a Linux (CentOS) machine.
 I installed tellicast and the drivers of my TBS5927 following the guidance I found but then how to lock on the right frequency of Eumetcast? Is there something similar to TBS IPTools or BDADATEX for linux ? Any help will be appreciated.
Thanks
Youssef,

if you are new to GNU/Linux expect a huge learning curve. This project will not fly within the next days.

If you are quite experienced you should use the latest dvb-eumetcast*_916 setup script that sends all PIDs
to interface dvbond0 (all distributed twice per day in BASIC Info-Channel-1). What you basically need is:

- TBS Open source drivers (you will have to compile those)  --> TBS git repo
   If your BOX does not come up in "dmesg" you have to install TBS-firmware files
- dvb-apps  (dvbnet, dvbtraffic, femon, szap, ...)  --> DISTRO
- dvb-eumetcast (this will also install CrazyCat's szap-s2)   --> EUMETSAT
- tellicast-client   --> EUMETSAT
- pcscd     (for EKU)  --> DISTRO
- SACSrv  (for EKU)  --> EUMETSAT

dvb-eumetcast will tune your USB-Box and setup the whole path down to dvbond0
dvbtraffic will show you the PIDs that come in ... The client attaches to IF dvbond0.

There is no such thing as graphics TBS- IP-Tool or CrazyCat's BDADataEx :-)

Regards,
Ernst




Re: tellicast on linux

Ernst Lobsiger
 

On Thu, May 27, 2021 at 01:56 PM, Youssef Bennouna wrote:
Dear all,
I have installed tellicast and other software programs on a windows10 computer, everything is fine thanks to Ernst and David . Now I want to do the same on a Linux (CentOS) machine.
 I installed tellicast and the drivers of my TBS5927 following the guidance I found but then how to lock on the right frequency of Eumetcast? Is there something similar to TBS IPTools or BDADATEX for linux ? Any help will be appreciated.
Thanks
Youssef,

if you are new to GNU/Linux expect a huge learning curve. This project will not fly within the next days.

If you are quite experienced you should use the latest dvb-eumetcast*_916 setup script that sends all PIDs
to interface dvbond0 (all distributed twice per day in BASIC Info-Channel-1). What you basically need is:

- TBS Open source drivers (you will have to compile those)  --> TBS git repo
   If your BOX does not come up in "dmesg" you have to install TBS-firmware files
- dvb-apps  (dvbnet, dvbtraffic, femon, szap, ...)  --> DISTRO
- dvb-eumetcast (this will also install CrazyCat's szap-s2)   --> EUMETSAT
- tellicast-client   --> EUMETSAT
- pcscd     (for EKU)  --> DISTRO
- SACSrv  (for EKU)  --> EUMETSAT

dvb-eumetcast will tune your USB-Box and setup the whole path down to dvbond0
dvbtraffic will show you the PIDs that come in ... The client attaches to IF dvbond0.

There is no such thing as graphics TBS- IP-Tool or CrazyCat's BDADataEx :-)

Regards,
Ernst



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