Signal


Ian Deans
 

I am seeing an increase today in the basic/HVS-1 signal of approx. 0.3dB on the SNR. Always welcome especially up here in Angus.

Unfortunately the new vertical signal for HVS-2 is still extremely poor up here with it not far off 3.00dB lower than the horizontal signal at about 10.2/10.4 SNR. I have not yet checked the skew due to bad weather and some flooding, but as I mentioned before I would be reluctant to compromise the basic signal to improve HVS-2.

Regards
Ian.


geojohnt@...
 

Ian,

That's interesting.
Looking at MSG-4 HRV VIS, it's going to be several hours before I will be in 'clear sky mode' to check the situation down here on the Sussex Coast.

Goodness, your HVS-2 SNR is very much lower than the BS/HVS-1.

Mine (HVS-2) is usually around 0.4 dB lower with Power -21 dBm and BS/HVS-1 Power at -18 dBm.

And I agree (at the moment) not to sacrifice SNR on BS/HVS-2 for better SNR on HVS-2.
I've left my skew alone since the firing up of 11.263 GHz V.
'If it ain't broke - don't try to fix it!' 

Regards,
John.




-----Original Message-----
From: Ian Deans via groups.io <iandeans142@...>
To: MSG-1@groups.io <MSG-1@groups.io>
Sent: Sun, 27 Nov 2022 11:34
Subject: [MSG-1] Signal


  I am seeing an increase today in the basic/HVS-1 signal of approx.
0.3dB on the SNR. Always welcome especially up here in Angus.

Unfortunately the new vertical signal for HVS-2 is still extremely poor
up here with it not far off 3.00dB lower than the horizontal signal at
about 10.2/10.4 SNR. I have not yet checked the skew due to bad weather
and some flooding, but as I mentioned before I would be reluctant to
compromise the basic signal to improve HVS-2.

Regards
Ian.






David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

On 27/11/2022 11:34, Ian Deans via groups.io wrote:
I am seeing an increase today in the basic/HVS-1 signal of approx.
0.3dB on the SNR. Always welcome especially up here in Angus.
Unfortunately the new vertical signal for HVS-2 is still extremely poor
up here with it not far off 3.00dB lower than the horizontal signal at
about 10.2/10.4 SNR. I have not yet checked the skew due to bad weather
and some flooding, but as I mentioned before I would be reluctant to
compromise the basic signal to improve HVS-2.
Regards
Ian.
Ian,

You will have already seen this, but for everyone else:

Here TP2 C3 SNR is currently ~0.7 dB lower than TP1 C4.
https://www.satsignal.eu/mrtg/performance_eumetcast-europe_link_margin.php

I've not seen any significant change since yesterday, although there are local variations all over.

As John mentions, let hope 10B is better!

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