Date   

Re: RAMdisk?

Ernst Lobsiger
 

David

Under GNU/Linux BS + HVS-1 + HVS-2 works fine on a 3GB RAM-Disk when emtied every 2 minutes
with my script mvmsg (that does also keep track of broken tmps). The good news is that the pure amd64
client with the new EKU software is far less affected by IO-Waits. It works fine with tmp + received on a separate
even entry level WD Blue 1TB data HDD. All I can repeat: BEWARE of HDDs with SMR recording. This rather
new crap is unusable for EUMETCast. Stick to CMR recording (manufacturers do now begin to indicate that
in the latest HDD datasheets). Whether the Windows TelliCast client showed the same improvements recently
I cannot know. I experiment now with 2 Toshiba P300 2TB (CMR) disks in software RAID0. This gives me
4TB with 360MB/s access even on my 11 years old (SATA II, 8GB RAM) PCs for tmp + received. With an
UEFI Bios I could even use GPT and take 2 x Toshiba P 300 3TB (CMR) for an affordable fast 6TB device.

No idea whether something similar (software RAID) is possible under Windows 10.


Best regards
Ernst


Re: RAMdisk?

Ferdinand Valk
 

-----Original Message-----
From: MSG-1@groups.io On Behalf Of David J Taylor
GM8ARV ?????????????? ???? via groups.io
Sent: Thursday, 06 August, 2020 14:04
To: MSG-1 group <MSG-1@groups.io>
Subject: [MSG-1] RAMdisk?

Any current thoughts on:

- brand of RAMdisk software to use for Windows-10?

- amount of RAMdisk to use for:

BS alone?
BS + HVS-1?

I'm moving from a couple of old PCs to a more modern one.

Thanks,
David
================
David,

I have stopped using RAM disk software on all machines here since the start
of Windows 10 without any noticeable adverse effect.
All PCs run i7 and have 16 GB RAM or more and the BS, HVS-1 and HVS-2 run on
different HDs and no SSD is involved in Eumetcast issues. Maybe this is not
the standard but in this configuration I do not see any use for the RAM
disk.

Cheers,
Ferdinand


RAMdisk?

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Any current thoughts on:

- brand of RAMdisk software to use for Windows-10?

- amount of RAMdisk to use for:

BS alone?
BS + HVS-1?

I'm moving from a couple of old PCs to a more modern one.

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


Re: New tellicast software for Windows

Ernst Lobsiger
 

Graham,

On Thu, Aug 6, 2020 at 05:49 AM, Graham Woolf wrote:
Can you buy that card at the moment and if so where from. id be more than happy to do some windows testing if needed
You will find and can buy the TBS6903X V12 in variants of active and passive cooling. But it has some problems in ACM/VCM.
Thats the reason for the V2 version. NO, you cannot buy the V2 at the moment. All I wanted to say is that the TBS6903 (and
the TBS6908 !) is a good card for EUMETCast reception, but it might really be replaced by the TBS6903X V2 in the near future
(and maybe the TBS6908 by the TBS6909X V2 if ever built). As I said: The biggest problem is (and has always been) drivers.

Regards
Ernst


Re: New tellicast software for Windows

Graham Woolf
 

Hi Ernst

Can you buy that card at the moment and if so where from. id be more than happy to do some windows testing if needed

Kind Regards

Graham


Re: New tellicast software for Windows

Ernst Lobsiger
 

Graham,

I guess SR1 traffic IF is 1Gbit while management IF is 100Mbit. The TBS6903 is a prooven second generation DVB-S2 card. Right now we are testing TBS6903X V2 (some HW changes from TBS6903X V12).
This is actually third generation HW using the stid135 chip. The problem under GNU/Linux has always been drivers. I cannot comment on Windows, I have never had such a receiver and probably never will.

Ernst

On Thu, Aug 6, 2020 at 04:36 AM, Graham Woolf wrote:
My system is two Sr1's running into 1Gb network cards although they are set at 100Mb Full duplex at the moment. Im never sure if that should be set to 1Gb full duplex. I dont know what the SR1 network interface supports
This is from the V1.9 SR1 HB:

SR1 Hardware
2.1
SR1 Hardware Interfaces
The SR1 has the following interfaces: Two RF front ends GigE interface 100BaseT management Interface Serial over USB Management Interface.The SR1 can be operated with a single demodulator or with dual demodulators. When the second Demodulator is in use, both Demodulators are limited to DVB-S2 8PSK CCM 30Msps. The configuration of demodulator operation mode is supported in the terminal menu and SNMP


Re: New tellicast software for Windows

Graham Woolf
 

Hi Ernst

My system is two Sr1's running into 1Gb network cards although they are set at 100Mb Full duplex at the moment. Im never sure if that should be set to 1Gb full duplex. I dont know what the SR1 network interface supports

I also have 128Gb of RAM so I have four ram disks for Eumetcast streams and then the data goes to four separate HHD. All this running on a core 17 8th gen and my cpu usage never really goes above 20% and I also use this as my main pc

It all seems to work OK

One question though what would you advise for next gen receiver hardware - Is it worth getting a TBS6903 or I notice that Novra have a new S400 receiver ?

Kind Regards

Graham


Re: New tellicast software for Windows

samu120497@...
 

Hi Ernst,

I'm very happy for this update of Tellicast Software.
I have a question: this version resolve some bug with the Windows 10 May 2004 Update? Thanks.


Re: New tellicast software for Windows

Ernst Lobsiger
 

Graham,

the most important change for Windows receivers probably is:

"Updated HVS-1 & HVS-2 to support bandwidth of up to 500 Mbit/s"

If your receiver (DVB+PC) can cope with that in the near future.
You can check in the license.ini file what you actually have now.

GNU/Linux has had 500 Mbit/s for years now. In the GNU/Linux
clent 2.14.6-0_900_amd64 it's  4000 Mbit/s now ...(yes 4'000 !).


Regards
Ernst


New tellicast software for Windows

Graham Woolf
 

Hi

Just noticed that there is a new version of the Tellicast software on the Eumetsat website here

ftp://ftp.eumetsat.int/pub/OPS/out/user/EUMETCast_Support/EUMETCast_Licence_cd/Windows/Tellicast/

Its dated the 4th August and is version 2-14-6

Kind Regards

Graham


Re: SNR/Link Margin up again.

geojohnt@...
 

Hello Hartmut,

Thanks very much for your clarification.

Totally off topic, but thinking about ORF, I can still remember the interval time signal from Radio Wein before the news when on a school holiday to Austria in the late 50's or early 60's on a small Perdio transistor radio I had.

Der, der a der, der a der, dah, dah.

Can't find a recording anywhere but found this which will bring back lots of memories to all you, like me, child SW Listeners:


Many 'classics,' and remembered 'jingles' including Vatican Radio - which is still played, I believe.
And of course especially in those days from countries 'behind the Iron Curtain.'

Best wishes,
John.

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


-----Original Message-----
From: Hartmut Schulla <mail@...>
To: MSG-1@groups.io <MSG-1@groups.io>
Sent: Fri, 31 Jul 2020 11:29
Subject: Re: [MSG-1] SNR/Link Margin up again.

The Eumetcast backup station is located in Vienna at the ORF-Center, 1120 Wien.
 
 
Von: MSG-1@groups.io <MSG-1@groups.io> Im Auftrag von geojohnt via groups.io
Gesendet: Freitag, 31. Juli 2020 12:14
An: MSG-1@groups.io
Betreff: Re: [MSG-1] SNR/Link Margin up again.
 
David,
 
Interesting?
 
  • A1 Teleport Aflenz is the only earth station in Austria
  • The satellite ground station was first opened in 1980
  • More than 50 antennas on an area of roughly 6,500 m2 send data at the speed of light to satellites located 36,000 km away
  • A photovoltaic park generates the electric power for the satellite station
  • Award-winning Teleport is an architectural masterpiece realized by Gustav Peichl
 
 
Regards,
John.
 
 
 


Re: SNR/Link Margin up again.

Hartmut Schulla
 

The Eumetcast backup station is located in Vienna at the ORF-Center, 1120 Wien.

 

 

Von: MSG-1@groups.io <MSG-1@groups.io> Im Auftrag von geojohnt via groups.io
Gesendet: Freitag, 31. Juli 2020 12:14
An: MSG-1@groups.io
Betreff: Re: [MSG-1] SNR/Link Margin up again.

 

David,

 

Interesting?

 

  • A1 Teleport Aflenz is the only earth station in Austria
  • The satellite ground station was first opened in 1980
  • More than 50 antennas on an area of roughly 6,500 m2 send data at the speed of light to satellites located 36,000 km away
  • A photovoltaic park generates the electric power for the satellite station
  • Award-winning Teleport is an architectural masterpiece realized by Gustav Peichl

 

 

Regards,

John.

 

 

 


Re: SNR/Link Margin up again.

geojohnt@...
 

David,

Interesting?

  • A1 Teleport Aflenz is the only earth station in Austria
  • The satellite ground station was first opened in 1980
  • More than 50 antennas on an area of roughly 6,500 m2 send data at the speed of light to satellites located 36,000 km away
  • A photovoltaic park generates the electric power for the satellite station
  • Award-winning Teleport is an architectural masterpiece realized by Gustav Peichl


Regards,
John.




Re: SNR/Link Margin up again.

geojohnt@...
 

David,

Mmmmm.

I'm presuming that Google Maps are orientated to the north so the only large dish I can see at The Arsenal is in the car park on the eastern side of the site.
And, if the 'map' is orientated north, the dish is pointing SW - W?

I can't see any other 'large,' as would presumably be required for this uplink dishes, pointing in a 'southerly' direction.

[Images copyright of Google maps]

????

Regarding 'signal strength,' I found the article interesting reading about 'backing off' a transponder as part of fine tuning a transponder and not pushing it into the non linear curve.
And of course, when the bandwidth was increased I guess the apparent 'signal level decreased?' 

10:00 UTC and already 32.3 degrees down here. 

Regards,
John.

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



Yes, there's less separation between Aflenz and Wien then between Usingen 
and Fucino.  About 115 km.  Perhaps the unlink dish is somewhere near that 
large tower with the helipad ( 16.390384° 48.195655°), but I don't know. 
Perhaps you mean the dish to the west of that building?  I may be completely 
wrong!

I wonder whether that document was created because we asked questions!  I 
recall one incident when it appeared that stations towards the west of the 
satellite footprint had lost signal strength which was discussed with 
EUMETSAT in detail.

Glad you're finding the comparisons useful!


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


-----Original Message-----
From: David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor@...>
To: MSG-1@groups.io
Sent: Thu, 30 Jul 2020 14:38
Subject: Re: [MSG-1] SNR/Link Margin up again.

David,

Thanks for the links.

Firstly, the two uplinks are not that far away from one another - Aflenz
being to the SW of Vienna, and a super cell storm such as can occur in
Europe could effect both locations at the same time.

I Google mapped Vienna Arsenal - which is in the centre of Vienna near the
Hauptbahnhof and there appears to be just one 'large' dish in the car park
of the Arsenal.

Secondly, thanks for the EUMETSAT link - very interesting information.
I wonder why I've never been directed to this document on my several several
complaints over the years regarding SNR variations.

The document states Link Margin is the most important parameter - I agree,
of course, my Link Margin level follows variations of my SNR level
precisely.
0.1 dB drop in SNR = 0.1 dB drop in Link Margin, etc.

Yesterday's considerable 'upgrade' in SNR/LM seen by many, ran from ~ 12:45
to 17:45 UTC.

Regards,
John.
===================================





-=-=-=-=-=-=-=-=-=-=-=-



Re: SNR/Link Margin up again.

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

David,

Thanks for the links.

Firstly, the two uplinks are not that far away from one another - Aflenz being to the SW of Vienna, and a super cell storm such as can occur in Europe could effect both locations at the same time.

I Google mapped Vienna Arsenal - which is in the centre of Vienna near the Hauptbahnhof and there appears to be just one 'large' dish in the car park of the Arsenal.

Secondly, thanks for the EUMETSAT link - very interesting information.
I wonder why I've never been directed to this document on my several several complaints over the years regarding SNR variations.

The document states Link Margin is the most important parameter - I agree, of course, my Link Margin level follows variations of my SNR level precisely.
0.1 dB drop in SNR = 0.1 dB drop in Link Margin, etc.

Yesterday's considerable 'upgrade' in SNR/LM seen by many, ran from ~ 12:45 to 17:45 UTC.

Regards,
John.
===================================

Yes, there's less separation between Aflenz and Wien then between Usingen and Fucino. About 115 km. Perhaps the unlink dish is somewhere near that large tower with the helipad ( 16.390384° 48.195655°), but I don't know. Perhaps you mean the dish to the west of that building? I may be completely wrong!

I wonder whether that document was created because we asked questions! I recall one incident when it appeared that stations towards the west of the satellite footprint had lost signal strength which was discussed with EUMETSAT in detail.

Glad you're finding the comparisons useful!

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


Re: SNR/Link Margin up again.

geojohnt@...
 

David,

Thanks for the links.

Firstly, the two uplinks are not that far away from one another - Aflenz being to the SW of Vienna, and a super cell storm such as can occur in Europe could effect both locations at the same time.

I Google mapped Vienna Arsenal - which is in the centre of Vienna near the Hauptbahnhof and there appears to be just one 'large' dish in the car park of the Arsenal. 

Secondly, thanks for the EUMETSAT link - very interesting information.
I wonder why I've never been directed to this document on my several several complaints over the years regarding SNR variations.

The document states Link Margin is the most important parameter - I agree, of course, my Link Margin level follows variations of my SNR level precisely.
0.1 dB drop in SNR = 0.1 dB drop in Link Margin, etc.

Yesterday's considerable 'upgrade' in SNR/LM seen by many, ran from ~ 12:45 to 17:45 UTC.

Regards,
John.

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


John,

The two stations are located in Vienna (backup) and Aflenz (prime).  This 
page took a little finding!

  https://www.4rfv.com/WHKYMIABWVBH/342/telekom-austria-group-renews-partnership-with-newtec-for-eumetsats-eumetcast-upgrade.htm


This page will also be of interest:

  https://www.eumetsat.int/website/home/TechnicalBulletins/EUMETCast/DAT_3569223.html

Cheers,

David

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

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


-----Original Message-----
From: David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor@...>
To: msg-1@groups.io
Sent: Thu, 30 Jul 2020 9:18
Subject: Re: [MSG-1] SNR/Link Margin up again.

All,

It's happened again.

I didn't see this till 17:00 UTC when my SNR was peaking at 13.6 dB.
Looking at 'Austria at this time there were two large thunder storms but
only in the south of the country not at the usual uplink in the NE.

Looking at David's 'Europe logs' there was an extended period of 'increased
signal' this afternoon seen across Europe.

Anyone know where the location of the second/ary uplink station?

Regards,
John T.
=============================




-=-=-=-=-=-=-=-=-=-=-=-



Re: SNR/Link Margin up again.

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

All,

It's happened again.

I didn't see this till 17:00 UTC when my SNR was peaking at 13.6 dB.
Looking at 'Austria at this time there were two large thunder storms but only in the south of the country not at the usual uplink in the NE.

Looking at David's 'Europe logs' there was an extended period of 'increased signal' this afternoon seen across Europe.

Anyone know where the location of the second/ary uplink station?

Regards,
John T.
=============================

John,

The two stations are located in Vienna (backup) and Aflenz (prime). This page took a little finding!

https://www.4rfv.com/WHKYMIABWVBH/342/telekom-austria-group-renews-partnership-with-newtec-for-eumetsats-eumetcast-upgrade.htm


This page will also be of interest:

https://www.eumetsat.int/website/home/TechnicalBulletins/EUMETCast/DAT_3569223.html

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


SNR/Link Margin up again.

geojohnt@...
 

All,

It's happened again.

I didn't see this till 17:00 UTC when my SNR was peaking at 13.6 dB.
Looking at 'Austria at this time there were two large thunder storms but only in the south of the country not at the usual uplink in the NE.

Looking at David's 'Europe logs' there was an extended period of 'increased signal' this afternoon seen across Europe.

Anyone know where the location of the second/ary uplink station?

Regards,
John T.




xrit2pic: hdf5 support

R. Alblas
 

For your information:
xrit2pic now also supports hdf5 format. Tested on GOES-16.

'True colour', using M6C01/M6C02/M6C03,  mapped according to:

https://aos.wisc.edu/aosjournal/Volume32/Bah_nonthesis_MS.pdf

doesn't give the right results, propably some preprocessing is needed before using the raw data...?

Linux and Windows executables available, also for command-line only use.

See:
http://www.alblas.demon.nl/wsat/software/soft_msg.html#download

Rob.


Re: EUMETCast BS/HVS-1 signal level.

geojohnt@...
 

David,

I think it was last Thursday when a Europe wide increase was seen for just 1 hour around 11:00 UTC.
Other times the increase was for a few hours.

I usually look across at Austria to see what the weather is doing. 

Regards,
John.

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


John,


This time it may be genuine uplink switching, judging by the weather over 
Austria!  But looking at:

  https://www.satsignal.eu/mrtg/performance_eumetcast-europe_link_margin.php

I only see switches at Billingham today, and I guess those are local. 
Yesterday's were Europe-wide.

Cheers,

David

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

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

-----Original Message-----
From: David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor@...>
To: MSG-1@groups.io
Sent: Sat, 25 Jul 2020 16:04
Subject: Re: [MSG-1] EUMETCast BS/HVS-1 signal level.

All,

What's going on?

For the second day running yesterday there has been a period (periods) of
increased SNR and thus link margin on the BS/HVS-1 service seen across
Europe in David's 'signal logging.'

Regards,
John Tellick.
======================================





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