Date   

Re: Solar outage.

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

All,

I don't like that Americanism - but I guess it's shorter than Sun/satellite/dish co-linearity?

Today was my maximum co-linearity day and I videoed both BS and HVS-1 graphs along with the SR1 Es/No dial during the whole event.
Of course if I had had Ernst's complete suite of logging graphs that would have been great, but .....

One interesting event was after I had come out of co-linearity and my SNR back to previous levels, my SNR then started to increase step by step and suddenly there was a sudden NOT LOCKED warning for 6 seconds.
At this time both NE Austrian uplink stations were well inside the - 6 dB SNR degradation cone.

My TP 1 SNR before co-linearity 13.2 DB.

Around this 'NOT LOCKED event' SNR was:

11:10:35 - 13.2
11:10:50 - 13.3
11:11:04 - 13.4
11:11:18 - 13.5

11:11:22 to 11:11:28 NOT LOCKED.

Yet both BS and HVS-1 Tellicast graphs didn't show any break in data.

Attached screen shot of my predicted outage.
The red line is the 'line of maximum co-linearity,' and NE Austria is 'quite close.'

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

John,

The outage logging software is all mine, not Ernst (who you likely make a better job of it!). The uplink stations adjust their uplink power to keep the output power from the satellite constant, as far as possible, so Austria shouldn't come into it (they would surely rely primarily on on-board telemetry).

I would not expect an "unlocked" event, and I've not monitored in such detail. Is there anything in the TelliCast log suggesting a "real" disconnection, or is it maybe a "sensor" error? The only thing I can wonder is whether the gain in the receiver is stepping up, as the total signal level (wanted + solar noise) is gradually dropping. But I don't think the total changes enough to matter, and in any case if it was a stepping issue you would see that in routine operation. What is the nominal signal level shown by the Ayecka SR1?

Has anyone else seen this?

The date caption in the plot shows both 2019 and 2020, by the way!

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


Re: Solar outage.

geojohnt@...
 


Oh for goodness sake?!!!


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


-----Original Message-----
From: geojohnt via groups.io <geojohnt@...>
To: MSG-1@groups.io <MSG-1@groups.io>
Sent: Sun, 11 Oct 2020 13:54
Subject: Re: [MSG-1] Solar outage.

All,

I forgot to say that when my SNR came back from NOT LOCKED, it was 13.1 dB for a while then back to 13.2.

Also forgot to send the attachment - thinking too much about a bit of lunch.

Regards,
John. 

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

-----Original Message-----
From: geojohnt via groups.io <geojohnt@...>
To: msg-1@groups.io <msg-1@groups.io>
Sent: Sun, 11 Oct 2020 13:47
Subject: [MSG-1] Solar outage.

All,

I don't like that Americanism - but I guess it's shorter than Sun/satellite/dish co-linearity?

Today was my maximum co-linearity day and I videoed both BS and HVS-1 graphs along with the SR1 Es/No dial during the whole event.
Of course if I had had Ernst's complete suite of logging graphs that would have been great, but .....

One interesting event was after I had come out of co-linearity and my SNR back to previous levels, my SNR then started to increase step by step and suddenly  there was a sudden NOT LOCKED warning for 6 seconds.
At this time both NE Austrian uplink stations were well inside the - 6 dB SNR degradation cone.

My TP 1 SNR before co-linearity 13.2 DB.

Around this 'NOT LOCKED event' SNR was:

11:10:35 - 13.2
11:10:50 - 13.3
11:11:04 - 13.4
11:11:18 - 13.5

11:11:22 to 11:11:28 NOT LOCKED.

Yet both BS and HVS-1 Tellicast graphs didn't show any break in data.

Attached screen shot of my predicted outage.
The red line is the 'line of maximum co-linearity,' and NE Austria is 'quite close.'

Regards,
John Tellick.


  


Re: Solar outage.

geojohnt@...
 

All,

I forgot to say that when my SNR came back from NOT LOCKED, it was 13.1 dB for a while then back to 13.2.

Also forgot to send the attachment - thinking too much about a bit of lunch.

Regards,
John. 

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

-----Original Message-----
From: geojohnt via groups.io <geojohnt@...>
To: msg-1@groups.io <msg-1@groups.io>
Sent: Sun, 11 Oct 2020 13:47
Subject: [MSG-1] Solar outage.

All,

I don't like that Americanism - but I guess it's shorter than Sun/satellite/dish co-linearity?

Today was my maximum co-linearity day and I videoed both BS and HVS-1 graphs along with the SR1 Es/No dial during the whole event.
Of course if I had had Ernst's complete suite of logging graphs that would have been great, but .....

One interesting event was after I had come out of co-linearity and my SNR back to previous levels, my SNR then started to increase step by step and suddenly  there was a sudden NOT LOCKED warning for 6 seconds.
At this time both NE Austrian uplink stations were well inside the - 6 dB SNR degradation cone.

My TP 1 SNR before co-linearity 13.2 DB.

Around this 'NOT LOCKED event' SNR was:

11:10:35 - 13.2
11:10:50 - 13.3
11:11:04 - 13.4
11:11:18 - 13.5

11:11:22 to 11:11:28 NOT LOCKED.

Yet both BS and HVS-1 Tellicast graphs didn't show any break in data.

Attached screen shot of my predicted outage.
The red line is the 'line of maximum co-linearity,' and NE Austria is 'quite close.'

Regards,
John Tellick.


  


Solar outage.

geojohnt@...
 

All,

I don't like that Americanism - but I guess it's shorter than Sun/satellite/dish co-linearity?

Today was my maximum co-linearity day and I videoed both BS and HVS-1 graphs along with the SR1 Es/No dial during the whole event.
Of course if I had had Ernst's complete suite of logging graphs that would have been great, but .....

One interesting event was after I had come out of co-linearity and my SNR back to previous levels, my SNR then started to increase step by step and suddenly  there was a sudden NOT LOCKED warning for 6 seconds.
At this time both NE Austrian uplink stations were well inside the - 6 dB SNR degradation cone.

My TP 1 SNR before co-linearity 13.2 DB.

Around this 'NOT LOCKED event' SNR was:

11:10:35 - 13.2
11:10:50 - 13.3
11:11:04 - 13.4
11:11:18 - 13.5

11:11:22 to 11:11:28 NOT LOCKED.

Yet both BS and HVS-1 Tellicast graphs didn't show any break in data.

Attached screen shot of my predicted outage.
The red line is the 'line of maximum co-linearity,' and NE Austria is 'quite close.'

Regards,
John Tellick.


  


Re: TBS6903X and TBS6909X ready for EUMETCast under GNU/Linux

stevens312
 

Thanks for the heads up Ernst, yes we did have some fun with those cards, but they work well now modified, I found the main problems lay with Windows 10, every time an up-date occurred it created more problems, but I found in the end to delete all new stuff I did not want and it worked, I have a new TBS Tuner running in W10 perfectly fine, so yes they are good Tuners.


Re: SR1 Red NOT LOCKED warning.

James Brown
 

On 10 Oct 2020, at 10:38, geojohnt via groups.io <geojohnt=aol.com@groups.io> wrote:


Hello All,

My EUMETCast BS/HVS-1 system runs 24/7 and when I switched on the monitors at 08:30 this morning, the SR1 Controller showed a red NOT LOCKED warning. and Tellicast BS and HVS-1 icons were red (of course).
Checking, I found that data stopped on the 02:45 MSG-4 cycle.

SR1 was warm and showed a green power LED but red LNB input LED's.

Sorry to waffle on a bit - but I immediately expected 'the worst' - which may well happen one day and I don't have a replacement receiver.

Regards,
John Tellick.
Welcome to the club!!
Cheers
JB


SR1 Red NOT LOCKED warning.

geojohnt@...
 

Hello All,

My EUMETCast BS/HVS-1 system runs 24/7 and when I switched on the monitors at 08:30 this morning, the SR1 Controller showed a red NOT LOCKED warning. and Tellicast  BS and HVS-1 icons were red (of course).
Checking, I found that data stopped on the 02:45 MSG-4 cycle.

SR1 was warm and showed a green power LED but red LNB input LED's.

Tried an unplug power reboot but this time the power LED and 'all LED's' were out.
However, the mains adapter showed 12.44 volts.

But I had been fooled in the past!
Sending my SR1 back to Nigel for 'repair' only to find that the receiver was OK and it was the mains adapter that was at fault which he replaced.

I'm sure many of you like me, will have a box of old assorted mains adapters from way back?
Of course, I found a few with 12 volts out but none gave the required 2 amps out.

I found a couple on amazon which I could have delivered by 22:00 tonight one showing it could be used with a variety of external USB HDD's
I checked my WD external USB HD and voila - its mains adapter was 12 V 2 A.

Plugging in the SR1 a bit gingerly, the power light lit red/green then green and the LNB ports red and then green for the connected port.
And data started flowing again.

Sorry to waffle on a bit - but I immediately expected 'the worst' - which may well happen one day and I don't have a replacement receiver.

Regards,
John Tellick.




 


Re: motorised dish

diogenes1@...
 

Thank you John for your comments. I had intended to wall mount the dish with a motor for focusing but as George has explained to me how impractical this is I shall mount the new dish, probably 1.25m, the same size as the old one, at ground level and as before focus by hand. It is only for Eumetcast using a quad LNB.
Regards, Peter
--
Securely sent with Tutanota. Get your own encrypted, ad-free mailbox:
https://tutanota.com


Re: motorised dish

geojohnt@...
 

Hello Peter and George,

Firstly Peter, did you use a motorised dish for zapping several satellite locations?
I'm presuming you did but as George said, a motorised dish is not really satisfactory to align the dish for EUMETCast.
Once aligned accurately, a dish for EUMETCast should stay that way.
And accurate dish alignment for EUMETCast is quite critical.

If you used it for satellite zapping, which satellites were of interest?
You can get multi satellite reception from one dish with a LNB bar and multi LNB's.

Also you said your dish was mounted low down - so can you place a new dish on a patio stand or tripod.

Right now is the time - with solar outage, to look for a location where a dish would be fully lit by sunlight at your time of solar outage.

George, depending on your location, of course, a 1 m dish is quite adequate for HVS-1 reception in England and most of central Europe.
I'm in SW London and a 1 m dish with an Inverto Black Ultra quad LNB and an SR1 receiver gives me an SNR of ~ 13.0 dB on TP 1.
Under clear sky conditions at certain times of the day the SNR is 13.3 dB for a while. 

Regards,
John.


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


-----Original Message-----
From: George Sz <szgydezign@...>
To: MSG-1@groups.io
Sent: Wed, 7 Oct 2020 21:00
Subject: Re: [MSG-1] motorised dish

Dear Peter,

I would advise against of installing a motorized dish. The bigger the dish, the more difficult it is to motorize it (needs more accurate calibration which may take hours, depending on the experience of the installer). Also please keep in mind that motorizing is not intended for manual focusing but to receive several satellites using a single dish (one at a time of course).

Therefore I highly recommend installing a fixed dish which is a lot easier to align. I've used a 1m Gibertini branded dish with my TBS card before, but that's nowhere near good enough to receive HVS. It's good for the Basic service, however. I'm using an old 1.8m Prodelin plastic dish now. There should be a smaller, 1.4m version of this dish available, usually used for ATM VSAT links. If you can find a second hand version of that, that should grant you decent reception. The only downside is the VSAT versions have a completely different LNB mount. I had to have one made for mine.

As for new antennae, quality varies a lot unfortunately. Gibertini should be OK, since that seems to come with a more or less accurate geometry.

Regards,
George


Re: motorised dish

George Sz
 

A properly mounted dish should not need any readjustments whatsoever. My 1.8m dish has been standing on its tripod mount for years now, without requiring any sort of adjustment. Since no tracking is required for a geostationary satellite, I don't see the point of using motors, really.

As you mentioned, it would still be preferable to mount the new dish within arm's reach, just to be safe. Sometimes the LNB blows etc.


Re: TBS6903X and TBS6909X ready for EUMETCast under GNU/Linux

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Hello Ernst,

Thanks for the very interesting and thorough write-up.
There is a small disadvantage in using TBS cards. For the moment I use two SR1 's because the layout of my house is such that the antenna is too far from my receiving PC.
I put the SR1's close to the antenna and have two RJ45 cables coming from the SR1's to the receiving PC.
Using TBS' cards it should be possible to build a small headless system that streams the data over a network. Food for thought.
Kind regards,

Hugo
============================

Hugo,

Could you could use an in-line amplifier half way along the cable?

https://www.amazon.co.uk/Axing-SVS-2-02-Broadband-Terrestrial-silver/dp/B002BZLOYS

although with modern kit the amount of allowable cable loss is quite high.

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


Re: TBS6903X and TBS6909X ready for EUMETCast under GNU/Linux

Ernst Lobsiger
 

Hugo,

my receiving PC is headless and managed via SSH. It can serve the files either via SAMBA (for Windows) or NFS (for GNU/Linux).

What you propose can be done as well: Take a small PC with 2 network cards (admin + multicast) and tell smcroute to send all
multicast traffic from the card to the 2nd network card. This works like 2 x SR1. Christian Peters has done that on a 55 Euro
PC adding a 10 Euro NIC (both from e-Bay). Add a cheap NetGear switch with IGMP Snooping and you can plug in more than one
receiver PC  (where you have the TC clients and EKU). Christian even had that running with a RASPI 4 with his 2 x TBS5925
as frontend. Unfortunately with the RASPI 4 he faced the "packet missed/recovered show" others also have on Windows 10.

Best Regards
Ernst


Re: TBS6903X and TBS6909X ready for EUMETCast under GNU/Linux

Hugo
 

Hello Ernst,

Thanks for the very interesting and thorough write-up.
There is a small disadvantage in using TBS cards.  For the moment I use two SR1 's because the layout of my house is such that the antenna is too far from my receiving PC.
I put the SR1's close to the antenna  and have two RJ45 cables coming from the SR1's to the receiving PC.
Using TBS' cards it should be possible to build a small headless system that streams the data over a network. Food for thought.
Kind regards,

Hugo


Re: motorised dish

diogenes1@...
 

Yes George, my reason for the motor was to fine tune the focusing without having to use ladders etc. But of course you are right about the accuracy of the gears etc. Although having said that when you see these large professional dishes they can only be moved using motors but obviously of a different class and price. Maybe I should just replace the dish at ground level, where I can get at it, and manually focus as before.
Regards, Peter
--
Securely sent with Tutanota. Get your own encrypted, ad-free mailbox:
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Re: motorised dish

Cornish Man
 

Hi

 

I had my 110cm dish on a Stag Hh120 motor.

While it did work. I sometimes had problems pointing it back to 10 E and had to adjust it to get a good signal.

Now its on a fixed mount and works fine

 

Jan from Cornwall UK

 

 

Sent from Mail for Windows 10

 

From: George Sz
Sent: 07 October 2020 21:00
To: MSG-1@groups.io
Subject: Re: [MSG-1] motorised dish

 

Dear Peter,

I would advise against of installing a motorized dish. The bigger the dish, the more difficult it is to motorize it (needs more accurate calibration which may take hours, depending on the experience of the installer). Also please keep in mind that motorizing is not intended for manual focusing but to receive several satellites using a single dish (one at a time of course).

Therefore I highly recommend installing a fixed dish which is a lot easier to align. I've used a 1m Gibertini branded dish with my TBS card before, but that's nowhere near good enough to receive HVS. It's good for the Basic service, however. I'm using an old 1.8m Prodelin plastic dish now. There should be a smaller, 1.4m version of this dish available, usually used for ATM VSAT links. If you can find a second hand version of that, that should grant you decent reception. The only downside is the VSAT versions have a completely different LNB mount. I had to have one made for mine.

As for new antennae, quality varies a lot unfortunately. Gibertini should be OK, since that seems to come with a more or less accurate geometry.

Regards,
George

 


TBS6903X and TBS6909X ready for EUMETCast under GNU/Linux

Ernst Lobsiger
 

Dear All

These cards are not new. You will find different versions that
have been sold for at least 2 years now. Actually Mike Stevens
(Windows) and me (GNU/Linux) tested these cards in 2018 already.
While the TBS6909X didn't work at all the TBS6903X could be used
for EUMETCast but sometimes seemed to change its temper from PC boot
to PC boot. Other highend users of "headend" had issues with the
TBS6909X too. Problems occured with VCM but also when using many
transponders. This year TBS issued a version V2 of the TBS6903X that
I tested with mixed results. A tiny 22uF capacitor HW update finally
changed everything. The fix also brought my cards from 2018 to life.

For future EUMETCast receivers I see the TBS6909X of prime interest.
During the last months I have shown that this card can receive four
transponders of the EUMETCast Europe kind with *excellent* results.
Again this is GNU/Linux only, I cannot comment on Windows behaviour.

I attach a report I also sent to EUMETSAT. As this latest HW fix is
new (it dates from August 2020) these cards have not been tested by
EUMETSAT yet and there certainly will be no Setup Guide for a while.

Impatient EUMETCast users that cannot wait to get their TBS6909X
(final version label yet unknown) should not buy those from the
cheapest place they find as they risk to get a sample without the
latest fix. It is probably safe to buy directly from the TBS store
in China that sells the TBS6909X for US$ 279.-- (price checked now).

https://shop.tbsdtv.com/tbs6909x-dvbs2-octa-tuner-pcie-card-p-207.html

The TBS CEO told me, that they have fixed all cards in stock and that
they replace cards bought earlier that customers have problems with.

Best Regards,
Ernst


P.S.
To give you an idea I let a test receiver online for some more days:

Testbed Receiver Saturn: TBS6909X V11 + 22uF capacitor hand soldered
2 x (T1 + T2) = 4 transponders / 1 cable / adapter 0..3 / client 0..6
http://5.153.116.236:82
or if your system doesn't take bare IPs
http://236-116-153-5.dyn.cable.fcom.ch:82


Re: motorised dish

George Sz
 

Dear Peter,

I would advise against of installing a motorized dish. The bigger the dish, the more difficult it is to motorize it (needs more accurate calibration which may take hours, depending on the experience of the installer). Also please keep in mind that motorizing is not intended for manual focusing but to receive several satellites using a single dish (one at a time of course).

Therefore I highly recommend installing a fixed dish which is a lot easier to align. I've used a 1m Gibertini branded dish with my TBS card before, but that's nowhere near good enough to receive HVS. It's good for the Basic service, however. I'm using an old 1.8m Prodelin plastic dish now. There should be a smaller, 1.4m version of this dish available, usually used for ATM VSAT links. If you can find a second hand version of that, that should grant you decent reception. The only downside is the VSAT versions have a completely different LNB mount. I had to have one made for mine.

As for new antennae, quality varies a lot unfortunately. Gibertini should be OK, since that seems to come with a more or less accurate geometry.

Regards,
George


Five SEVIRI Level 2 products are planned to be discontinued in October 2020.

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

From:
https://www.eumetsat.int/website/home/News/DAT_5079174.html?lang=EN&pState=1

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Five SEVIRI Level 2 products are planned to be discontinued in October 2020.
Thursday, 25 June 2020

The products concerned are:

Cloud Analysis (CLA)
Cloud Analysis Image (CLAI)
Divergence (DIV)
Normalised Difference Vegetation Index/Normalised Difference Vegetation Index Decadal (NDVI/NDVD)
Tropospheric Humidity (TH)

These products are currently generated for the Meteosat prime 0° and Meteosat IODC missions.

From 21 October 2020, they will no longer be generated and their distribution will be stopped.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Their Tweet says from today, not from October-21.

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


Re: Tellicast 'reset.'

Graham Woolf
 

Hi Ernst

Do you have any idea when that card might be on general sale ?

Regards

Graham


motorised dish

diogenes1@...
 

Hello to you all,
My low level 1.2m dish suffered a calamity, I fell upon it, distorted it and know it is of no further use! Please do not ask for any further details, it is just too embarrassing.  I thought I would replace it with a 1m dish located higher up and on the side of my home. In that position it will need a motorised device to focus accurately, no climbling for us octogenarians, at least that is what I am told. I have two questions for the Group, the first is what hardware should I get and the second is does someone know an individual in my  area (SW Northumberland/Cumbria) who might be competent to do the installation.
Regards, Peter