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Re: HVS-2 problems

Ernst Lobsiger
 

All

Here is one more hint: TD-15 on page 11 says HVS-2 has a maximum 85 Mbps info bit rate and 77 Mbps IP data rate.
On satsignal Arne van Belle reaches the maximum Rx I/O of 85 Mbps while all others are only slightly below this limit.

My yellow graph is MultiCast traffic in Bytes/s. So this might eventually not be what EUMETSAT calls IP data rate.
IP data rate 77 Mbps could be what we would see in the clients WEB interface if we subscribe for just everything.

In any case if I multiply 10.4 by 8 I get far beyond these 77 Mbps. The yellow graph also shows signs of saturation
at 10.4 (flat top). Did EUMETSAT just overload the system? Any other ideas regarding these maximum bitrates?


Regards,
Ernst


Re: HVS-2 problems

Ernst Lobsiger
 

On Fri, Mar 12, 2021 at 11:13 AM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
I don't know, and I can't see anything obvious (for HVS-2) in the Manufacturers' Notes
David and All

When I  compare march 10 - 11 and 11 - 12 of March from 12:00 to 12:00 I see a 20% mean traffic
increase and an almost 10% maximum traffic increase. This increase is seen on satsignal as well:

http://www.satsignal.eu/mrtg/performance_eumetcast-europe_rx_io.php#t2

BEWARE: My plots are in Bytes/s while satsignal uses more common Bits/s.

Cheers,
Ernst


Re: HVS-2 problems

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 12/03/2021 16:10, Ernst Lobsiger via groups.io wrote:
David,
it seems the problem is linked to a traffic increase of more than 10%.
What new stuff has been added to HVS-2 yesterday around noon?
Cheers,
Ernst
I don't know, and I can't see anything obvious (for HVS-2) in the Manufacturers' Notes. May be in the weekly messages? I didn't get an immediate reply from Ops, though, saying you've missed (whatever).

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


Re: HVS-2 problems

Ernst Lobsiger
 

On Thu, Mar 11, 2021 at 10:43 PM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
Yes! Reported to EUMETSAT this morning.
David,

it seems the problem is linked to a traffic increase of more than 10%.
What new stuff has been added to HVS-2 yesterday around noon?

Cheers,
Ernst


Re: HVS-2 problems

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 11/03/2021 19:56, Ernst Lobsiger via groups.io wrote:
Dear All
Graham contacted me first re this issue. HVS-2 has an ongoing problem of missed/recovered packets
at very high levels. This is a problem seen all over Europe. That's why it's likely an Uplink Chain issue.
See it on David's site, scroll down to  -->  EUMETCast HVS-2  - lost TelliCast packets
http://satsignal.eu/mrtg/performance_eumetcast-europe_losses.php <http://satsignal.eu/mrtg/performance_eumetcast-europe_losses.php>
Has anyone more information about this problem? Maybe someone (Graham?) should contact OPS.
Regards,
Ernst
Thanks, Graham & Ernst.

Yes! Reported to EUMETSAT this morning.

BTW: each service has its own URL, for example:


https://www.satsignal.eu/mrtg/performance_eumetcast-europe_losses.php#hvs2

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


HVS-2 problems

Ernst Lobsiger
 

Dear All

Graham contacted me first re this issue. HVS-2 has an ongoing problem of missed/recovered packets
at very high levels. This is a problem seen all over Europe. That's why it's likely an Uplink Chain issue.

See it on David's site, scroll down to  -->  EUMETCast HVS-2  - lost TelliCast packets

http://satsignal.eu/mrtg/performance_eumetcast-europe_losses.php

Has anyone more information about this problem? Maybe someone (Graham?) should contact OPS.

Regards,
Ernst



Re: Evaluation copies of Windows 10 Windows Insider DEV

James Brown
 

Excellent. Many thanks for the news and those who reported and got the fix.

Cheers,

James

On 11 Mar 2021, at 10:10, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor=blueyonder.co.uk@groups.io> wrote:

John Says reports that this issue is now fixed in the latest Dev build. TBS6903 working again.

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





Re: Evaluation copies of Windows 10 Windows Insider DEV

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

John Says reports that this issue is now fixed in the latest Dev build. TBS6903 working again.

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


GOES 16 sun glint.

geojohnt@...
 

Hello,

I noticed considerable (a sensor over loading) area of sun glint on GOES 16 in the Pacific off South America on March 6 around 19:00 and  for quite a period afterwards.
The Sun on Saturday was around 5 degrees south of the equator.

Geostationary satellites do show some sun glint when the sun is at and around 0 degrees.
But MSG-4 was only showing a very small sign on Saturday.

Difference in sunshield design?

Regards,
John Tellick.



  


Re: Missing key error in Telicat

Ernst Lobsiger
 

On Sun, Mar 7, 2021 at 09:09 AM, Esko Petaja wrote:
I have typically SNR >14 dB
Esko

With this SNR you should get good reception for all EUMETCast services. If your 2.3 m antenna is
on the ground I could imagine with low elevation (maybe 20°?) you risk more terrestrial interference.

Anyway it seems you have a broken SR1 now as well. EUMETSAT is currently testing the new
Novra S400 router. This might be a replacement option to consider though with hight price tag.

Regards,
Ernst




Re: Missing key error in Telicat

Esko Petaja
 

On Sat, Mar 6, 2021 at 03:25 PM, Ernst Lobsiger wrote:
Hello Ernst

I have typically SNR >14 dB

My antenna is 2.3 M Prime focus dish

Br. Esko P



Esko

the most important figure is your SNR in units of dB (NOT in % !).
What SNR [dB] do you have on Transponder E1 (Bas, hvs-1) ?
hat SNR [dB] do you have on Transponder E2 (hvs-2) ?
What is the size of your "big antenna" ?


SR-1 Not booting

Esko Petaja
 

Hello all

I lost power supply for my SR 1.

I get new one but it is not working any more

-Power led goes to screen
-Network activity is shown both Lan and management ports
-Serial interface with USB shows port but no connection with Putty

Any ideas

Factory reset ?
IS somebody in GEO still repairing units ?

Br. Esko P


Re: Missing key error in Telicat

Ernst Lobsiger
 

>> I have very steady signal and big antenna <<


Esko

the most important figure is your SNR in units of dB (NOT in % !).
What SNR [dB] do you have on Transponder E1 (Bas, hvs-1) ?
What SNR [dB] do you have on Transponder E2 (hvs-2) ?
What is the size of your "big antenna" ?

Ernst


Re: Missing key error in Telicat

Esko Petaja
 

Hello

I see also some missed packets.

I need to check if it happened during same time of day, I did not thought it to be solar problem

If Interrference might be possible due to long cable (50m)
I have very steady signal and big antenna

Br. Esko P


Re: Brunt Ice Shelf.

geojohnt@...
 

Hello Ernst,

Thanks for the image.
I must - sometime - get a second RX and get into TP2.

Regards,
John.

+++++++++++++++++++++


-----Original Message-----
From: Ernst Lobsiger via groups.io <ernst.lobsiger@...>
To: MSG-1@groups.io
Sent: Fri, 5 Mar 2021 16:31
Subject: Re: [MSG-1] Brunt Ice Shelf.

On Fri, Mar 5, 2021 at 07:15 AM, <geojohnt@...> wrote:
I think this is the new A74 ice berg as seen by Metop a couple of days ago.
John,

here is a recent Sentinel-3A image of A74. No data from Sentinel-3A today :-( ...

https://uns.eumetsat.int/


Regards,

Ernst


Re: Brunt Ice Shelf.

Ernst Lobsiger
 

On Fri, Mar 5, 2021 at 07:15 AM, <geojohnt@...> wrote:
I think this is the new A74 ice berg as seen by Metop a couple of days ago.
John,

here is a recent Sentinel-3A image of A74. No data from Sentinel-3A today :-( ...

https://uns.eumetsat.int/

Regards,
Ernst


Brunt Ice Shelf.

geojohnt@...
 

Hello All,

I think this is the new A74 ice berg as seen by Metop a couple of days ago.

Regards,
John Tellick.





Re: Missing key error in Telicat

geojohnt@...
 

Hello Ernst and Dario,

And David also.

Yes, this is the 'problem' at the moment for central Europe.
Today's plot attached about 11:35 GMT.
Red line = maximum outage track - Sun/satellite/dish colinearity.

Best wishes,
John.

++++++++++++++++++++++++++++


-----Original Message-----
From: Ernst Lobsiger via groups.io <ernst.lobsiger@...>
To: MSG-1@groups.io
Sent: Fri, 5 Mar 2021 11:48
Subject: Re: [MSG-1] Missing key error in Telicat

On Fri, Mar 5, 2021 at 03:30 AM, Dario Stelitano wrote:
Dear David ,
i think the problem of Esko is the same i have, day by day , same hour. (but not solution at moment)
Dario,

this is the spring solar E10A satellite colinearity. That's the time at noon the sun (with strong microwave radiation) is in your antenna beam.
This causes strong noise, SNR goes down and LOCK might even be lost. Depending on the antenna size this will go away within a week or so
(when the sun has more elevation at noon). You will have the same problem in autumn again ... Twice a year, just pure celestial mechanics.

Regards,
Ernst


Re: Missing key error in Telicat

Dario Stelitano
 

Dear Ernst and David,
thank's a lot for the explanation.
Regards

--------------------------------------------------------------------
 Stelitano Dario, PhD
 Post-Doc Research Fellow, Remote Sensing Group
 Istituto Nazionale di Geofisica e Vulcanologia (INGV), ONT
 Via di Vigna Murata, 605
 00143 Rome, ITALY


Il giorno ven 5 mar 2021 alle ore 12:48 Ernst Lobsiger via groups.io <ernst.lobsiger=belponline.ch@groups.io> ha scritto:
On Fri, Mar 5, 2021 at 03:30 AM, Dario Stelitano wrote:
Dear David ,
i think the problem of Esko is the same i have, day by day , same hour. (but not solution at moment)
Dario,

this is the spring solar E10A satellite colinearity. That's the time at noon the sun (with strong microwave radiation) is in your antenna beam.
This causes strong noise, SNR goes down and LOCK might even be lost. Depending on the antenna size this will go away within a week or so
(when the sun has more elevation at noon). You will have the same problem in autumn again ... Twice a year, just pure celestial mechanics.

Regards,
Ernst


Re: Missing key error in Telicat

Ernst Lobsiger
 

On Fri, Mar 5, 2021 at 03:30 AM, Dario Stelitano wrote:
Dear David ,
i think the problem of Esko is the same i have, day by day , same hour. (but not solution at moment)
Dario,

this is the spring solar E10A satellite colinearity. That's the time at noon the sun (with strong microwave radiation) is in your antenna beam.
This causes strong noise, SNR goes down and LOCK might even be lost. Depending on the antenna size this will go away within a week or so
(when the sun has more elevation at noon). You will have the same problem in autumn again ... Twice a year, just pure celestial mechanics.

Regards,
Ernst

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