Date   

Re: HVS-1 data

Terence O'Hanlon Smith
 

Excellent news, Terence! Thanks for reporting back. I have a suspicion that I
might deserve another fraction of a dB, but it wouldn't be safe for me to
adjust. I do find that tightening the four wall-clamp screws make a
difference, and that I might put down to the screws gradually coming out with
the repeated high winds we get. In my case it's the two upper screws which
seem a shade looser.

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

Thank you David, were you a little closer I would happily come up and tighten the screws up for you on an occasional basis. FYI it is the upper screws on my az clamp that need to be tightest, and notably the Easterly one; but this presumably a factor of the tension on the dish's attitude.
A query if I may.

I don't know if this is a problem suffered by anyone else, but my two instances of the GOES ABI manager, with their headers as high as I can get them, show on screen only to the bottom of the lowest set of four image boxes. The captions for these boxes are off the bottom of the screen along with the Start/Stop buttons, "LEDs", the CLOSE button, and the processing status line (as I see them on your page for the programme). I cannot scroll down the window. Very odd. Changing the screen resolution makes no difference.
I have files in the \Eumetcast\received\HVS-1\ directory trees for the various channels, but cannot process them. Each of the logs says the programmes have started on opening, but I presume no processing will occur until the start button is clicked.
I have little doubt that there is a simple explanation and solution, but these presently escape me.
Kind regards,
Terence



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Re: HVS-1 data

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 11/11/2021 12:40, Terence O'Hanlon Smith via groups.io wrote:
Ernst, and anyone to whom it may be of interest,

       after yesterday's dismal weather, with a SNR of near 8.0dB, and losses
even of basic data, I took advantage of the sunny spell this morning to climb
on the garage roof and tweak my 90cm dish and LNB.
 I used my and my wife's mobile phones on Facetime, one with it's camera on
the BDAdatex window on the screen in my study, and the other with me on the
garage roof. This made it possible watch any improvement in SNR as I adjusted
the receptors.
From the 8.2dB with which the professional left me, I managed to obtain 11.3dB.
 What particularly took me by surprise was that, once the dish pointing and
LNB focus and skew were near optimum, I was able to more finely improve th SNR
by simply tightening or loosening each of the four bolts clamping the dish
mount to the wall bracket. These theoretically only adjust azimuth, but by
adjusting each bolt in turn I was able to further improve SNR by at least a
half decibel. How sensitive is that!
    Anyway, thanks to y'all, particularly Ernst, for the heads-up, without
which I would still be languishing in despair.
  Needless to say, by the time I came back indoors the data was flowing
happily into the HVS-1 instance of Tellicast without me needing to touch
anything else; so it appears, surprisingly,  that at least I had done
everything correctly in software set up.
   ATB,
         Terence
Excellent news, Terence! Thanks for reporting back. I have a suspicion that I
might deserve another fraction of a dB, but it wouldn't be safe for me to
adjust. I do find that tightening the four wall-clamp screws make a
difference, and that I might put down to the screws gradually coming out with
the repeated high winds we get. In my case it's the two upper screws which
seem a shade looser.

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


Re: HVS-1 data

Terence O'Hanlon Smith
 

Ernst, and anyone to whom it may be of interest,

       after yesterday's dismal weather, with a SNR of near 8.0dB, and losses even of basic data, I took advantage of the sunny spell this morning to climb on the garage roof and tweak my 90cm dish and LNB.
 I used my and my wife's mobile phones on Facetime, one with it's camera on the BDAdatex window on the screen in my study, and the other with me on the garage roof. This made it possible watch any improvement in SNR as I adjusted the receptors.
From the 8.2dB with which the professional left me, I managed to obtain 11.3dB.
 What particularly took me by surprise was that, once the dish pointing and LNB focus and skew were near optimum, I was able to more finely improve th SNR by simply tightening or loosening each of the four bolts clamping the dish mount to the wall bracket. These theoretically only adjust azimuth, but by adjusting each bolt in turn I was able to further improve SNR by at least a half decibel. How sensitive is that!
    Anyway, thanks to y'all, particularly Ernst, for the heads-up, without which I would still be languishing in despair.
  Needless to say, by the time I came back indoors the data was flowing happily into the HVS-1 instance of Tellicast without me needing to touch anything else; so it appears, surprisingly,  that at least I had done everything correctly in software set up.
   ATB,
         Terence
  

On 09/11/2021 18:14, Ernst Lobsiger via groups.io wrote:
On Tue, Nov 9, 2021 at 09:33 AM, T-Online wrote:
everywhere i read that it is necessary to have min 12db signal strength for the HVS-1 Service....
With my 80cm dish i have all the time between 10.5 and 11.5db signal strength. I don't have with this setup any lost packages. Just in strong rainy conditions i am losing some packages.
Flo,

first of all we are talking about SNR not signal strength.
I also hope you only loose UDP packets not packages.

My above equations say that HVS-reception begins with about SNR = 9.3 dB. This is not on/off, you still have missed and lost packets.
The EUMETSAT recommendation of minimum 4 dB LM means they propose SNR >= 13.3 dB which is indeed rather high. This might
be intended for National Meteorological Services and should still work in not too heavy rain. I doubt you have no missed packets with
SNR between 10.5 and 11.5 dB. But it certainly works as your LM is between 1.2 and 2.2 dB (not below 0 dB as the one of Terence).

Cheers,
Ernst


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Data Access Services - Data synergy and collaboration with EUMETView

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

EUMETSAT have announced the following session for tomorrow. You may need these
services when the bandwidth from direct broadcast becomes too great or
unsustainable!

========================================
Data Access Services - Data synergy and collaboration with EUMETView Online

11 November 2021, 13:00 - 14:00 UTC

Monthly series of open, online short sessions on the Data Access Services and
their usage via GUIs and APIs, answering top questions posted by participants
in an open sli.do EXT EXT (event code #data-services, link
https://app.sli.do/event/flsdivtc).

We encourage you to post your questions in sli.do now so that we can adapt the
content of the next session to answer them.

The next scheduled sessions are on:

Thursday 11 November 2021, 14:00-15:00 CET

Thursday 9 December 2021, 14:00-15:00 CET

The sessions are open to all and address a wide range of attendees, from
service providers to scientists and forecasters. Each session requires
registration via Zoom. A great opportunity to remove any technical challenges
in using the Data Access Services GUIs and APIs, and engage users in discussion
with EUMETSAT experts and colleagues.
========================================


More:
https://trainingevents.eumetsat.int/trui/events/2092

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


Re: HVS-1 data

Ernst Lobsiger
 

On Tue, Nov 9, 2021 at 09:09 AM, Terence O'Hanlon Smith wrote:
t looks as though I may need a larger dish, as it was professionally adjusted and checked only a few short weeks ago, with a brand new Inverto LNB. I also then connected my Rx laptop and TBS 5927 directly to the dish with a short testing cable, and the reception levels and snr were the same as when indoors on the main cable link. I could perhaps try another LNB before going the whole hog.
Terence,

assuming that you still live on Mersea Islands and have not moved to Orkney,
also assuming that you are not talking about a 45 - 60cm caravan TV dish,
I still think your antenna is misaligned! If you check SNR on David's site:

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

There is an 88cm dish near Cardiff with SNR=12.4dB (average)
There is an 85cm  dish near Liverpool with SNR=12.4dB (average)
I have had an 80cm dish with SNR around 13dB here in Switzerland.

Until you get this sorted you should set a MODCOD filter for 8psk 3/5
only. This should dramatically improve your Basic Service reception.

Cheers,
Ernst



Re: HVS-1 data

T-Online <metcom@...>
 

Thanks for correcting me.
Till now i don't have any "damaged" picture from GOES16/17. Only when the weather is not good (rain, snow etc.).
Strong winds are also not a problem.

Ciao...Flo


Re: HVS-1 data

Ernst Lobsiger
 

On Tue, Nov 9, 2021 at 09:33 AM, T-Online wrote:
everywhere i read that it is necessary to have min 12db signal strength for the HVS-1 Service....
With my 80cm dish i have all the time between 10.5 and 11.5db signal strength. I don't have with this setup any lost packages. Just in strong rainy conditions i am losing some packages.
Flo,

first of all we are talking about SNR not signal strength.
I also hope you only loose UDP packets not packages.

My above equations say that HVS-reception begins with about SNR = 9.3 dB. This is not on/off, you still have missed and lost packets.
The EUMETSAT recommendation of minimum 4 dB LM means they propose SNR >= 13.3 dB which is indeed rather high. This might
be intended for National Meteorological Services and should still work in not too heavy rain. I doubt you have no missed packets with
SNR between 10.5 and 11.5 dB. But it certainly works as your LM is between 1.2 and 2.2 dB (not below 0 dB as the one of Terence).

Cheers,
Ernst


Re: HVS-1 data

T-Online <metcom@...>
 

Hi guys,

everywhere i read that it is necessary to have min 12db signal strength for the HVS-1 Service....
With my 80cm dish i have all the time between 10.5 and 11.5db signal strength. I don't have with this setup any lost packages. Just in strong rainy conditions i am losing some packages.

Good luck, Terence!

Ciao Flo


Re: HVS-1 data

Terence O'Hanlon Smith
 

Thank you Ernst,
                             it looks as though I may need a larger dish, as it was professionally adjusted and checked only a few short weeks ago, with a brand new Inverto LNB. I also then connected my Rx laptop and TBS 5927 directly to the dish with a short testing cable, and the reception levels and snr were the same as when indoors on the main cable link. I could perhaps try another LNB before going the whole hog.
 I had not intended to suggest that I had previously taken HVS-1 on the SR1, as this was certainly not the case. My purely 'basic' system had not changed in many years. Attempting to receive HVS-1 has been an entirely new, and quite exacting, adventure for this rank amateur.
  Thank you again for your help and advice.
         ATB,
                  Terence
  

 
                     

On 09/11/2021 16:44, Ernst Lobsiger via groups.io wrote:
On Tue, Nov 9, 2021 at 06:56 AM, Terence O'Hanlon Smith wrote:
The Snr, sadly, is 8.2
Terence,

as you said you had HVS-1 reception with your SR1 this sounds like a pointing problem of your antenna (or maybe a bad LNB or HF connector?).

As mentionned a couple of times on this list, you must have a minimum SNR per MODCOD. If your SNR is above, you have some Link Margin (LM):

Basic Service  MODCOD     8psk 3/5 --> LM = SNR - 5.9  [dB]
HVS-1, HVS-2 MODCOD 16apsk 2/3 --> LM = SNR - 9.3 [dB]

EUMETSAT recommends a LM of 4 dB (!) but your LM for HVS-1 is below 0. No chance to receive HVS-1 that way. As I said you need SNR>=12 dB.

Cheers,
Ernst



Virus-free. www.avg.com


Re: HVS-1 data

Ernst Lobsiger
 

On Tue, Nov 9, 2021 at 06:56 AM, Terence O'Hanlon Smith wrote:
The Snr, sadly, is 8.2
Terence,

as you said you had HVS-1 reception with your SR1 this sounds like a pointing problem of your antenna (or maybe a bad LNB or HF connector?).

As mentionned a couple of times on this list, you must have a minimum SNR per MODCOD. If your SNR is above, you have some Link Margin (LM):

Basic Service  MODCOD     8psk 3/5 --> LM = SNR - 5.9  [dB]
HVS-1, HVS-2 MODCOD 16apsk 2/3 --> LM = SNR - 9.3 [dB]

EUMETSAT recommends a LM of 4 dB (!) but your LM for HVS-1 is below 0. No chance to receive HVS-1 that way. As I said you need SNR>=12 dB.

Cheers,
Ernst


EUMETCast Dummy PLFrames.

geojohnt@...
 

All,

I commented the other day about (possibly?) seeing more Dummy PLFrames being transmitted 'recently.'

Well, this is the case and I've received this explanation from Ops as to what they are:

Your observation is correct that there are more Dummy PLFrames recently due to filling some bandwidth that became free from decommissioned MetOp-A satellite data.
They are part of the DVB-S2 spec and are used for synchronisation and energy dispersal purposes when there is no "real" data to be transmitted in an already dedicated bandwidth.

Regards,
John Tellick.




Re: HVS-1 data

Terence O'Hanlon Smith
 

Ernst,
           thank you for your reply.

 Using BDAdataEx the Modcod box is set to 'All', so I assumed it covers everything in the same way as it does PIDs.
 The two TC ini files are each as downloaded with the latest Tellicast software, the Basic file working satisfactorily, so I again assumed the HSV-1 ini file would do so too. The "Do not remove" path lines at the bottom of each file are identical.

The Snr, sadly, is 8.2

Kind regards,
                       Terence


On 09/11/2021 14:14, Ernst Lobsiger via groups.io wrote:
Terence,

this looks like you have no useful input to your HVS-1 client. These are the points I would check:
- Is the SNR high enough for HVS-1 (16apsk 2/3 needs 12dB +)
- Is there a MODCOD setting for BASIC service only (8psk 3/5)
- is your cast-client-hvs-1.ini O.K. with your credentials and pointing to the same interface as *bas.ini

Good luck,
Ernst


Virus-free. www.avg.com


Re: HVS-1 data

Ernst Lobsiger
 

Terence,

this looks like you have no useful input to your HVS-1 client. These are the points I would check:
- Is the SNR high enough for HVS-1 (16apsk 2/3 needs 12dB +)
- Is there a MODCOD setting for BASIC service only (8psk 3/5)
- is your cast-client-hvs-1.ini O.K. with your credentials and pointing to the same interface as *bas.ini

Good luck,
Ernst


HVS-1 data

Terence O'Hanlon Smith
 

Good day all,
                     perhaps someone far better informed than I would be kind enough to put me on the straight and narrow.

 Having recently replaced my dead SR1 with a TBS 5927 after some months lay off, and regained my basic data, I took the bull by the horns in an attempt to also regain the GOES data that I had long missed.
 I downloaded the new tellicast clients and updated all David's related programmes, plus the GOES ABI Manager, read a plethora of Eumetsat and Satsignal fora related messages, and by about 03:00 this morning I had managed to bring up two instances of Tellicast for Basic and HVS-1 respectively.

 Yes, I have requested the new data via the portal, and Debbie has advised it should now be active.

 Basic is operating well, and the HVS-1 instance has correctly opened a new child, but the log halts at "Extracted all files from the Aladdin E-token".
The TSL-HVS-1  announcement channel is active, but stuck at 'connecting', and there is no data flow. The only difference I can see between the two TC instances, apart from the lack of data flow, is that the HVS-1 'Statistics' show that the server address is "not yet received".
 If anyone can advise me of what I have doubtless missed I would be incredibly grateful.
             Thanks in anticipation,
                                  with best wishes to all,
                                                                         Terence


Re: RSS

Vincenzo Mone
 

Thanks Ian for the reminder


73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520




*********************************
****** GSM +39 328 7110193 ******
***** SMS +39 328 7110193 *****
*********************************

-----Messaggio originale-----
Da: MSG-1@groups.io <MSG-1@groups.io> Per conto di Ian Deans via
groups.io
Inviato: lunedì 8 novembre 2021 18:47
A: MSG-1@groups.io
Oggetto: [MSG-1] RSS


Just a reminder that RSS stops tomorrow for almost a month ( starts up again
7/12/21 ) with no gap filling being provided.

Regards
Ian.



RSS

Ian Deans
 

Just a reminder that RSS stops tomorrow for almost a month ( starts up again 7/12/21 ) with no gap filling being provided.

Regards
Ian.


Re: Goes-16 and Goes-17

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 08/11/2021 12:55, Ernst Lobsiger via groups.io wrote:
Or do you see any advantage in retaining the /bas/, /hvs-1/, /hvs-2/ and
/hvs-3/ as prefixes in the future?

Regards,
Ernst
Ernst,

I feel that sticking with the EUMETSAT convention may make for fewer
trouble-shooting calls in the future. Perhaps a sub-directory "HVS-1" might
stand out more than E1H. I can see justification for both ways.

Certainly I propose that in any future updates on my own software I will stick
to the conventions as far as possible. As a general principle, the fewer files
in a single directory the better.

Of course, if there is a good reason not to conform that would change things.

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


Re: Goes-16 and Goes-17

Ernst Lobsiger
 

On Mon, Nov 8, 2021 at 03:21 AM, <geojohnt@...> wrote:
I would certainly recommend retaining the \HVS-1\ part, though.
David and John,

while taking 2 x (T1 + T2) with a TBS6909X and 6 clients I *had* to use /srv/rec_0/Channel_Name ... /srv/rec_5/Channel_name.
rec_0 for Basic , rec_1 for hvs-1, rec_2 for hvs_2 etc. But now I go back to an ultra flat file system with just /srv/Channel_name.
So I suggest at least for the future to get rid of the /bas/, /hvs-1/, /hvs-2/ prefixes as these are all in (future) channel names:
E1B-*  (transponder Europe 1, Basic Service), E1H-* (transponder Europe 1, HVS-1), E2H-* (transponder Europe 2, HVS-2)
and E3H-* (transponder Europe 3, HVS-3, comming rather soon ...).

Or do you see any advantage in retaining the /bas/, /hvs-1/, /hvs-2/ and /hvs-3/ as prefixes in the future?

Regards,
Ernst


Re: TBS5927 USB Box

Vincenzo Mone
 

David,
Thanks for your suggestion on to be aware to buy it on that site.
I really appreciate your suggestion.
Take care

73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520




*********************************
****** GSM +39 328 7110193 ******
***** SMS +39 328 7110193 *****
*********************************

-----Messaggio originale-----
Da: MSG-1@groups.io <MSG-1@groups.io> Per conto di David J Taylor
GM8ARV ?????????????? ???? via groups.io
Inviato: lunedì 8 novembre 2021 12:37
A: MSG-1@groups.io
Oggetto: Re: [MSG-1] TBS5927 USB Box

On 08/11/2021 10:53, Vincenzo Mone wrote:
Hello All,

Please apologise if using this forum for an help.

I have found this site that sales the TBS5927 USB Box, but before I
make a wrong

Purchase I would like to know if the one is OK for our purpose.

I would use it to receive the HVS-2 or TER signals but I am a bit

I'm afraid to buy it without your advice as they sell it at a
ridiculously low price compared to other

sites like Amazon and others, so someone could be kind enough to take
a look at the site and tell me if it's okay?

This is the site:

https://www.kaifud.com/tbs5927-professional-dvb-s2-digital-satellite-t
v-tuner-usb-box-ccm-vcm-acm-p-728233.htm
<https://www.kaifud.com/tbs5927-professional-dvb-s2-digital-satellite-
tv-tuner-usb-box-ccm-vcm-acm-p-728233.htm>

Any help and/or suggestions will be really appreciated.

73 de Enzo IK8OZV
Enzo,

The TBS5927 should receive HVS-2.

That price is far too low, I would not buy there.

As I already explained TER is for direct distribution over the Internet to
special users, and not via satellite.

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



Re: TBS5927 USB Box

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 08/11/2021 10:53, Vincenzo Mone wrote:
Hello All,
Please apologise if using this forum for an help.
I have found this site that sales the TBS5927 USB Box, but before I make a wrong
Purchase I would like to know if the one is OK for our purpose.
I would use it to receive the HVS-2 or TER signals but I am a bit
I'm afraid to buy it without your advice as they sell it at a ridiculously low price compared to other
sites like Amazon and others, so someone could be kind enough to take a look at the site and tell me if it's okay?
This is the site:
https://www.kaifud.com/tbs5927-professional-dvb-s2-digital-satellite-tv-tuner-usb-box-ccm-vcm-acm-p-728233.htm <https://www.kaifud.com/tbs5927-professional-dvb-s2-digital-satellite-tv-tuner-usb-box-ccm-vcm-acm-p-728233.htm>
Any help and/or suggestions will be really appreciated.
73 de Enzo IK8OZV
Enzo,

The TBS5927 should receive HVS-2.

That price is far too low, I would not buy there.

As I already explained TER is for direct distribution over the Internet to special users, and not via satellite.

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

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