HVS-2 on 11263 MHz V active


David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

The new HVS-2 feed on the vertically polarised 11236 MHz transponder has been active since yesterday afternoon as I reported on Twitter, and Douglas has found that it's carrying Sentinel data. It may be marginally stronger than the 11388 MHz service, as I expected from earlier tests, but this is a preliminary report.

https://www.eumetsat.int/eumetcast-europe-service-transponder-migration

Reception reports welcome.

Cheers,
David
--
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Web: https://www.satsignal.eu
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Ernst Lobsiger
 

On Fri, Nov 11, 2022 at 08:53 PM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
The new HVS-2 feed on the vertically polarised 11236 MHz transponder has been active since yesterday afternoon
Hi,

a theoretical possibility to check the LNB skew via SNR ...

Ernst


Ernst Lobsiger
 

On Fri, Nov 11, 2022 at 08:53 PM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
Reception reports welcome.
David,

Did they switch that on 15:00? If so look at SNR Darlington. Minor SNR steps down also seen at Lodz, Brussels and Petersfield ...

Ernst


David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 12/11/2022 05:56, Ernst Lobsiger via groups.io wrote:
Hi,
a theoretical possibility to check the LNB skew via SNR ...
Ernst
Yes, that's the best way.

With V active and no H signal, listen on H, adjust skew for zero received on H. Or the other way round with only H active, adjust for minimum V signal. I guess easier if you have a spectrum analyser covering up to 2 GHz (now available at about €30 with free software).

With both active , adjust skew for best SNR on both.
May have to compromise!

Cheers,
David
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SatSignal Software - Quality software for you
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David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 12/11/2022 06:09, Ernst Lobsiger via groups.io wrote:
David,
Did they switch that on 15:00? If so look at SNR Darlington. Minor SNR steps down also seen at Lodz, Brussels and Petersfield ...
Ernst
I don't have the exact time, Ernst, and to be honest doing that last thing on a Friday afternoon is not what I expected!

Douglas and I have been discussing the SNR issue and my guess is that with inexpensive cable and long runs there is cross-coupling so that the isolation between H and V 1513 MHz signals is reduced, and hence the SNR on both H and V is reduced.

The V on 11263 was switched off after September 20, so we might look back on the records to see whether the SNR improved marginally after that date.

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


Ernst Lobsiger
 

On Fri, Nov 11, 2022 at 11:10 PM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
The V on 11263 was switched off after September 20, so we might look back on the records to see whether the SNR improved marginally after that date.
David and Douglas,

a bump yesterday 15:00 is even better seen on more stations with link margin:

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

It might be a good thing if someone can figure out and publish V transponder on/off times (if switched off again?).

Ernst


James Brown
 

Thanks to all for the reporting. Strange to see how little my own reception was affected here in S Wales in the U.K.  

James. 

On 12 Nov 2022, at 08:03, Ernst Lobsiger via groups.io <ernst.lobsiger@...> wrote:

On Fri, Nov 11, 2022 at 11:10 PM, David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 wrote:
The V on 11263 was switched off after September 20, so we might look back on the records to see whether the SNR improved marginally after that date.
David and Douglas,

a bump yesterday 15:00 is even better seen on more stations with link margin:

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

It might be a good thing if someone can figure out and publish V transponder on/off times (if switched off again?).

Ernst


Ernst Lobsiger
 

On Sat, Nov 12, 2022 at 12:25 AM, James Brown wrote:
Strange to see how little my own reception was affected here in S Wales in the U.K.  
James,

provided this 15:00 event is really the switch ON of the V transponder, then this means
that stations with a good LNB skew will see less than those with a skew yet to improve.
An additional effect might be a possible cross-coupling of long cables mentioned by David.

On my two TC receivers I do not see any bump but my lon=7.5° has low skew anyway.

Ernst


geojohnt@...
 

David, Ernst and All,

I had looked a couple of days ago but the new feed hadn't been fired up.
I presumed it would be active ahead of the 'stated date.'

Having re-aligned my dish last week after 'wind damage,' - I just got the elevation and azimuth back, didn't check skew as I can never make my mind up owing to a bit of leeway, clock and anti-clockwise, when I'm on '0.' 
My SNR (which varies a little during the day - clear sky) was, without 11.263 V on, between 13.6/7 and 13.9 dB. with a 1 m dish and an Inverto Black Ultra quad LNB - and SR1.

Now10:07 - and I don't know which part of my daily variation I'm in - my SNR is 13.6 dB fairly steady.

Can someone with an SR1 please remind me of the 'Tuner Frequency' change required on #1 of the SR1 setup for 11.263 V please and of course I have to switch to vertical on # H.

Oh, and Ernst makes an important point regarding skew and the receiving stations location relative to '10 degrees east.'

Regards,
John.




-----Original Message-----
From: David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io <david-taylor@...>
To: MSG-1@groups.io
Sent: Sat, 12 Nov 2022 4:53
Subject: [MSG-1] HVS-2 on 11263 MHz V active

The new HVS-2 feed on the vertically polarised 11236 MHz transponder has been
active since yesterday afternoon as I reported on Twitter, and Douglas has
found that it's carrying Sentinel data.  It may be marginally stronger than the
11388 MHz service, as I expected from earlier tests, but this is a preliminary
report.


Reception reports welcome.

Cheers,
David
--
SatSignal Software - Quality software for you
Twitter: @gm8arv






Ian Deans
 

On 12/11/2022 07:10, David J Taylor GM8ARV 🏴 🇪🇺 via groups.io wrote:

Douglas and I have been discussing the SNR issue and my guess is that with inexpensive cable and long runs there is cross-coupling so that the isolation between H and V 1513 MHz signals is reduced, and hence the SNR on both H and V is reduced.
The V on 11263 was switched off after September 20, so we might look back on the records to see whether the SNR improved marginally after that date.
Cheers,
David
------------------------------------------
Up here in Angus Scotland the signal level for 11263 V is terrible.

With a 1.1 metre dish I can on a clear day get between 12.9 and 13.3 SNR on basic and HVS-1 The signal for HVS-2 on the existing transponder is normally between 12.00 and 12.3 SNR.

The signal on the 11263 V is struggling to get over 10.2 SNR which probably makes it unusable. I need to look at the skew which is maximised for the basic service but my gut feeling is not to compromise the basic signal.

Regards
Ian.


James Brown
 

Just checked on my TBS6903 on the H/V and find:

H RF 98 and quality 84
L. RF 98 and quality 81-82

I currently use the TBS for HVS 1 and 2 using the Crazy Cat silicon switch for dual mode. Kept the SR-1 for basic only. Will now have to reconfigure the SR-1 to do basic and HVS-1 and just use the TBS in single mode.

Cheers

James.


Ernst Lobsiger
 

Dear All,

I just changed one of my TC receivers to HVS-2 vertical.
I currently receive channels E2H-S3A-02 and E2H-S3A-04.
Signal strength increased up to +7dB, SNR about +0.8dB.

Cheers,
Ernst


Ernst Lobsiger
 

On Sat, Nov 12, 2022 at 02:58 AM, James Brown wrote:
I currently use the TBS for HVS 1 and 2 using the Crazy Cat silicon switch for dual mode.
James,

You can use the TBS-6903 with two cables for Basic HVS-1 (H) and HVS-2 (V). If you have 3 cables or maybe a splitter
you could even use your SR1 for Basic with MODCODS 8psk 3/5 set and your TBS-6903 for HVS-1 (H) and HVS-2 (V).

Ernst


James Brown
 

Thanks Ernst. 
I have a dual LNB and two cables at the moment. 
Cheers. 

James

On 12 Nov 2022, at 11:31, Ernst Lobsiger via groups.io <ernst.lobsiger@...> wrote:

On Sat, Nov 12, 2022 at 02:58 AM, James Brown wrote:
I currently use the TBS for HVS 1 and 2 using the Crazy Cat silicon switch for dual mode.
James,

You can use the TBS-6903 with two cables for Basic HVS-1 (H) and HVS-2 (V). If you have 3 cables or maybe a splitter
you could even use your SR1 for Basic with MODCODS 8psk 3/5 set and your TBS-6903 for HVS-1 (H) and HVS-2 (V).

Ernst


Jeskynar
 


On Sat, 12 Nov 2022, 04:53 David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺 via groups.io, <david-taylor=blueyonder.co.uk@groups.io> wrote:

The new HVS-2 feed on the vertically polarised 11236 MHz transponder has been
active since yesterday afternoon as I reported on Twitter, and Douglas has
found that it's carrying Sentinel data.  It may be marginally stronger than the
11388 MHz service, as I expected from earlier tests, but this is a preliminary
report.

   https://www.eumetsat.int/eumetcast-europe-service-transponder-migration

Reception reports welcome.

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






David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 12/11/2022 08:02, Ernst Lobsiger via groups.io wrote:
It might be a good thing if someone can figure out and publish V transponder on/off times (if switched off again?).
Ernst
I do check twice a day, but just note the times of checking.

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


Ernst Lobsiger
 

On Sat, Nov 12, 2022 at 03:40 AM, James Brown wrote:
I have a dual LNB and two cables at the moment.
James,

with a TWIN LNB and 2 cables there is even another solution:
If you do not need MODCOD filters you can now reconfigure your
SR1 for HVS-2 (V) and basically let your TBS-6903 as is but
receive just BAS + HVS-1 (H) on demodulator 0. Then in summer
2023 you can use your TBS-6903 in single cable mode again and
add HVS-3 (H) on demodulator 1. No need for splitters or 3 cables.

Cheers,
Ernst


David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 12/11/2022 10:17, Ian Deans via groups.io wrote:
Up here in Angus Scotland the signal level for 11263 V is terrible.
With a 1.1 metre dish I can on a clear day get between 12.9 and 13.3 SNR
on basic and HVS-1 The signal for HVS-2 on the existing transponder is
normally between 12.00 and 12.3 SNR.
The signal on the 11263 V is struggling to get over 10.2 SNR which
probably makes it unusable. I need to look at the skew which is
maximised for the basic service but my gut feeling is not to compromise
the basic signal.
Regards
Ian.
Thanks for the report, Ian.

You'll just need to hope for continuing good weather for HVS-2!

Let's hope that the move to EUTELSAT 10B next year will result in better signals for all!

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


James Brown
 

That’s an email I will be keeping for a very long time!
Thank you again Ernst. 

James. 

On 12 Nov 2022, at 12:03, Ernst Lobsiger via groups.io <ernst.lobsiger@...> wrote:

On Sat, Nov 12, 2022 at 03:40 AM, James Brown wrote:
I have a dual LNB and two cables at the moment.
James,

with a TWIN LNB and 2 cables there is even another solution:
If you do not need MODCOD filters you can now reconfigure your
SR1 for HVS-2 (V) and basically let your TBS-6903 as is but
receive just BAS + HVS-1 (H) on demodulator 0. Then in summer
2023 you can use your TBS-6903 in single cable mode again and
add HVS-3 (H) on demodulator 1. No need for splitters or 3 cables.

Cheers,
Ernst


fvalk@...
 

In order not to interrupt normal operations I have tested the following on a spare machine:

 

Correctly working is the configuration with TBS-6903, using two separate cables coming from an LNB Inverto pro pll octo.

  • Transponder 1 at 11263 horizontal (Basic plus HVS-1)
  • Transponder 2 at 11388 horizontal (HVS-2)

I am using two instances of BdaData in this configuration.

 

When I change only Transponder-2 to 11263 vertical, HVS-2 keeps receiving, but instantly Transponder-1  loses all data. As soon as I change the vertical back to horizontal, the data comes back to Transponder 1 and Transponder 2 loses data, until I also change the frequency to 11388 again, after which all is working correctly.

 

It seems that in my setup horizontal and vertical cannot be allotted simultaneously, but I fail to see why that might be.

 

Cheers,

Ferdinand

 

 

From: MSG-1@groups.io On Behalf Of Ernst Lobsiger via groups.io
Sent: Saturday, 12 November, 2022 12:04
To: MSG-1@groups.io
Subject: Re: [MSG-1] HVS-2 on 11263 MHz V active

 

On Sat, Nov 12, 2022 at 03:40 AM, James Brown wrote:

I have a dual LNB and two cables at the moment.

James,

with a TWIN LNB and 2 cables there is even another solution:
If you do not need MODCOD filters you can now reconfigure your
SR1 for HVS-2 (V) and basically let your TBS-6903 as is but
receive just BAS + HVS-1 (H) on demodulator 0. Then in summer
2023 you can use your TBS-6903 in single cable mode again and
add HVS-3 (H) on demodulator 1. No need for splitters or 3 cables.

Cheers,
Ernst