Date   

Re: High SNR on TP1

Ferdinand Valk
 

Ernst,

 

I have recently relocated to the southwest of the country exactly during the period of the signal increase you mentioned. My current average fair weather SNR of 16.5 dB is about 1.5 dB higher than it used to be at my old place and it is difficult to say how much of that increase is attributable to a better spot within the footprint, how much to finetuning the new antenna setup and how much to upping Transponder power at the satellite. In short, the interpretation of the graph you attached of my SNR is not straightforward and may lead to wrong conclusions.

 

Cheers,

Ferdinand

 

 

From: MSG-1@groups.io On Behalf Of Ernst Lobsiger via groups.io
Sent: Wednesday, 08 September, 2021 08:11
To: MSG-1@groups.io
Subject: [MSG-1] High SNR on TP1

 

Hi All

While I read frequent complaints about low SNR nobody seems to wonder about high SNR. Since August 10th 2021 I have SNR above 15dB on a regular basis on TP1. I cannot remember such a period and I don't think there was a gust that gave my dish a lucky punch.

Regards,
Ernst


Re: High SNR on TP1

James Brown
 

Very helpful. Thank you David.

JB

On 8 Sep 2021, at 09:40, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor=blueyonder.co.uk@groups.io> wrote:

On 08/09/2021 09:10, Ernst Lobsiger via groups.io wrote:
Hi All
While I read frequent complaints about low SNR nobody seems to wonder about high SNR. Since August 10th 2021 I have SNR above 15dB on a regular basis on TP1. I cannot remember such a period and I don't think there was a gust that gave my dish a lucky punch.
Regards,
Ernst
Indeed, not, Ernst! No complaints from your more northerly and westerly cousins!

I gather that following all our queries about signal strength, transponder 1 is now running at its highest power level before running into non-linearity, so it has less than the normal back-off of 1.5 dB. EUMETSAT note that this may not be maintained.

Unfortunately transponder 2 cannot run like this (perhaps running continuous 16APSK affects this) and hence it is backed off about 1.4 dB from full power. I guess that if the power is turned up various intermodulation products or non-linearities will actually reduce the link margin even though the signal level is higher. AM-PM conversion and all that, plus spreading of the spectrum.

There is a suggestion that some of the degradation some of us see is due to using dishes which are too small, and hence picking up interference from other satellites. EUMETSAT's reference dishes are 180 cm which have a narrower beam-width.

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





Re: overlays for goes 16

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 08/09/2021 09:37, Andrea Battistella wrote:
I'm using xrit2pic on Ubuntu 18
thanks
Andrea
Andrea,

I expect that the images into GeoSatSignal are the same as those from my own GOES ABI Manager software (free) - the sample I demonstrated was named:

202109080730-g16-b12.jpg

Whilst I've not tested it myself, I would expect GeoSatSignal to run under Virtual Box or VMWare and some of my software does run directly under Wine. It may even run under the Twister OS on a Raspberry Pi 4, but I would not expect a high performance from that combination!

Rob Alblas can help with his own software, of course.

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


Re: High SNR on TP1

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 08/09/2021 09:10, Ernst Lobsiger via groups.io wrote:
Hi All
While I read frequent complaints about low SNR nobody seems to wonder about high SNR. Since August 10th 2021 I have SNR above 15dB on a regular basis on TP1. I cannot remember such a period and I don't think there was a gust that gave my dish a lucky punch.
Regards,
Ernst
Indeed, not, Ernst! No complaints from your more northerly and westerly cousins!

I gather that following all our queries about signal strength, transponder 1 is now running at its highest power level before running into non-linearity, so it has less than the normal back-off of 1.5 dB. EUMETSAT note that this may not be maintained.

Unfortunately transponder 2 cannot run like this (perhaps running continuous 16APSK affects this) and hence it is backed off about 1.4 dB from full power. I guess that if the power is turned up various intermodulation products or non-linearities will actually reduce the link margin even though the signal level is higher. AM-PM conversion and all that, plus spreading of the spectrum.

There is a suggestion that some of the degradation some of us see is due to using dishes which are too small, and hence picking up interference from other satellites. EUMETSAT's reference dishes are 180 cm which have a narrower beam-width.

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


Re: overlays for goes 16

Andrea Battistella
 

I'm using xrit2pic on Ubuntu 18
thanks
Andrea


High SNR on TP1

Ernst Lobsiger
 

Hi All

While I read frequent complaints about low SNR nobody seems to wonder about high SNR. Since August 10th 2021 I have SNR above 15dB on a regular basis on TP1. I cannot remember such a period and I don't think there was a gust that gave my dish a lucky punch.

Regards,
Ernst


Re: overlays for goes 16

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 08/09/2021 06:20, Andrea Battistella wrote:
Hi
is it possible to have overlays ( coast and country ) for GOES 16 channel M6C12 ?
Thanks in advance
Andrea
My GeoSatSignal program does that - see the sample.
Is that the software which you are using?

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


overlays for goes 16

Andrea Battistella
 

Hi
is it possible to have overlays ( coast and country ) for GOES 16 channel M6C12 ?
Thanks in advance
Andrea


telegram group or channel

Antonio Angelotti
 

Hello Everybody,

I was wondering if there is a telegram group or channel where we can share images and thoughts.

Cheers
Antonio



Re: New dish

Vincenzo Mone
 

Guys,
This morning i was testing with my 100cm Dish as I think I do not have enough space
For the 102cm one. I have tried to put to the maximum signal on the SR1 Controller
Program and I got 12.0 but the Icons in the Tray stays yellow instead to turn white.
Please what to check?
Thanks




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




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-----Messaggio originale-----
Da: MSG-1@groups.io <MSG-1@groups.io> Per conto di David J Taylor
GM8ARV ?????????????? ???? via groups.io
Inviato: giovedì 2 settembre 2021 12:17
A: MSG-1@groups.io
Oggetto: Re: [MSG-1] New dish

On 02/09/2021 09:52, Vincenzo Mone wrote:
Hello David,
Thanks for pointing me to the LNB and suggesting me the one with two
outputs, but to avoid wSting money can you please just confirm me if
this is the correct one for a 120cm dish????

https://www.amazon.it/Inverto-diametro-ricevitori-satellitari-analogic
i/dp/B001ON8DAG
<https://www.amazon.it/Inverto-diametro-ricevitori-satellitari-analogi
ci/dp/B001ON8DAG>


Thanks a lot

73's de Enzo IK8OZV
Enzo,

You need to check with the person supplying the dish.

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv



Re: Palette

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 02/09/2021 21:49, Marco Martini wrote:
Hi where can I find other palettes for hrpt reader?
Marco,

Perhaps other user have some to offer? If so, I would be happy to add them to the Web site.

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


Palette

Marco Martini
 

Hi where can I find other palettes for hrpt reader?


Re: New dish

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 02/09/2021 09:52, Vincenzo Mone wrote:
Hello David,
Thanks for pointing me to the LNB and suggesting me the one with two outputs, but to avoid wSting money can you please just confirm me if this is the correct one for a 120cm dish????
https://www.amazon.it/Inverto-diametro-ricevitori-satellitari-analogici/dp/B001ON8DAG <https://www.amazon.it/Inverto-diametro-ricevitori-satellitari-analogici/dp/B001ON8DAG>
Thanks a lot
73's de Enzo IK8OZV
Enzo,

You need to check with the person supplying the dish.

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv


Re: New dish

Vincenzo Mone
 

Hello David,
Thanks for pointing me to the LNB and suggesting me the one with two outputs, but to avoid wSting money can you please just confirm me if this is the correct one for a 120cm dish????



Thanks a lot

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




     *******************************************
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Il giorno 2 set 2021, alle ore 10:24, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor@...> ha scritto:

On 01/09/2021 20:33, Vincenzo Mone wrote:
Hello Ernst,
first Thanks for your reply.
I was looking for a 120cm dish as I do not have enough space.
I will see to my friend if he can find me the one you have suggested me.
Please will you point me to the correct LNB maybe with a link?
Thanks so much
73 de Enzo IK8OZV

Look up on Amazon:  "Inverto Black Ultra"

I found it helpful to have more than one output, and I actually have quad. This allows monitoring on the extra feeds, or even a second receiver for HVS-1 or HVS-2.

73,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv






Re: New dish

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 01/09/2021 20:33, Vincenzo Mone wrote:
Hello Ernst,
first Thanks for your reply.
I was looking for a 120cm dish as I do not have enough space.
I will see to my friend if he can find me the one you have suggested me.
Please will you point me to the correct LNB maybe with a link?
Thanks so much
73 de Enzo IK8OZV
Look up on Amazon: "Inverto Black Ultra"

I found it helpful to have more than one output, and I actually have quad. This allows monitoring on the extra feeds, or even a second receiver for HVS-1 or HVS-2.

73,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv


Re: New dish

Vincenzo Mone
 

Hello Ernst,

first Thanks for your reply.

I was looking for a 120cm dish as I do not have enough space.

I will see to my friend if he can find me the one you have suggested me.

Please will you point me to the correct LNB maybe with a link?

Thanks so much

 

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    *****

      *********************************

 

Da: MSG-1@groups.io <MSG-1@groups.io> Per conto di Ernst Lobsiger via groups.io
Inviato: mercoledì 1 settembre 2021 20:17
A: MSG-1@groups.io
Oggetto: Re: [MSG-1] New dish

 

On Wed, Sep 1, 2021 at 10:43 AM, Youssef Bennouna wrote:

Will it be OK for our purpose or I need forcely a Prime Focus one?

Vincenzo,

only a few users have a prime focus dish. So go for a common Sat-TV offset dish.
In Italy you should get the highly recommended "Gibertini OP 125L" aluminum dish.
With this antenna and a good LNB (Inverto Black Ultra) you can get up to SNR=15dB.

Be aware that this asks for a very sturdy pole (e.g. 90mm) because of high wind loads.
Expect that pointing a 125cm dish is very sensitve compared to your current 80cm model.

Regards,
Ernst


Re: New dish

Ernst Lobsiger
 

On Wed, Sep 1, 2021 at 10:43 AM, Youssef Bennouna wrote:
Will it be OK for our purpose or I need forcely a Prime Focus one?
Vincenzo,

only a few users have a prime focus dish. So go for a common Sat-TV offset dish.
In Italy you should get the highly recommended "Gibertini OP 125L" aluminum dish.
With this antenna and a good LNB (Inverto Black Ultra) you can get up to SNR=15dB.

Be aware that this asks for a very sturdy pole (e.g. 90mm) because of high wind loads.
Expect that pointing a 125cm dish is very sensitve compared to your current 80cm model.

Regards,
Ernst


Re: New dish

Youssef Bennouna
 

Hello Vicenzo,

I have an offset one, it works nicely

Cheers

 

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 Vincenzo Mone
Envoyé : mercredi 1 septembre 2021 18:13
À : 'MSG-1 Mailing List' <MSG-1@groups.io>
Objet : [MSG-1] New dish

 

Hello All,

I am attempting to update my dish from the actual 80cm to the 120cm on.

Today I called a friend who works in a shop that sells Dishes asking him for the 120cm dish and he told me that

he has none of that size Prime Focus but only Offset.

Will it be OK for our purpose or I need forcely a Prime Focus one?

Thanks

 

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




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New dish

Vincenzo Mone
 

Hello All,

I am attempting to update my dish from the actual 80cm to the 120cm on.

Today I called a friend who works in a shop that sells Dishes asking him for the 120cm dish and he told me that

he has none of that size Prime Focus but only Offset.

Will it be OK for our purpose or I need forcely a Prime Focus one?

Thanks

 

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    *****

      *********************************

 


Re: Missing Keys

Vincenzo Mone
 

Ernst,

SORRY if asked again

 

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    *****

      *********************************

 

Da: MSG-1@groups.io <MSG-1@groups.io> Per conto di Ernst Lobsiger via groups.io
Inviato: domenica 29 agosto 2021 20:57
A: MSG-1@groups.io
Oggetto: Re: [MSG-1] Missing Keys

 

> ... with Ayecka-SR1-console software and a fine tuning of the dish

> I managed to get the signal from 8.6 to 9.1 and can get both the services.

Vincenzo

SNR=9.1dB is far too low for HVS-1 reception and it also produces missed packets and missing keys for BAS.
This has been stated many many many times on this list. You need at least SNR=11.3dB and this is possible
with an 80cm dish. So don't even ask again before you have SNR > 11dB and don't ask how to point your dish.

Ernst

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