Greetings Hugo from the UK and thanks for your response.
Yes, I have checked user name and password and still the same.
I have been using EUMETCastView on a regular basis for  Sentinel 3a imaging for some time
and really pleased with the quality displayed. I liked the global presentation of the pass
segments when selecting and area of interest for display, and considered a very user friendly method.  Never had any problems downloading
from the CODA site until now and the introduction of the recent web site updates --  which I find not easy to navigate around.
Will have to investigate an alternative way to get the  data I need into EUMETCastView and not to abandon this section of the programme .
Hope I don't have to do this.   In the meantime best wishes and thanks for making EUMETCastView available.   John Morris
Regards   John Morris

You could try a technique that has been used since the early days of satellite TV.

Put a satellite signal strength meter in the coax feed to the LNB. The LNB being powered up.

Point the LNB straight up and note the reading.

Repeat but this point the LNB straight down at the ground and compare the reading with the sky pointing one.

There should be a large difference.

The reason this works is that at around 10-12GHz the sky has a noise temperature of a few degrees Kelvin and the ground has a noise temperature of around 280 degrees Kelvin.

Compare with a known good LNB, if you have one, to compare the amount of change.

The effect is surprisingly strong. I've used the effect on many occasions to test LNBs and on old analogue satellite TV receivers the AGC rail would go from one extreme to the other during the test.

How powerful a radio emitter the ground beneath a dish is often forgotten by satellite dish installers and a poorly mount or incompatible LNB feed horn/ dish assembly can result in the LNB seeing the "hot" ground and they being baffled by not being able to achieve a low noise figure even with a large dish.

I hope that is of some help

Regards

James

Hi John,

It has been a while since I tried to download some Sentinel images via Scihub/CODA in EUMETCastView.
You can always use the interactive website of Scihub to download the files and than point to that directory in EUMETCastView.
Did you change the username and password in EUMETCastView to your credentials ? Can you log on in the interactive website https://scihub.copernicus.eu/dhus/#/home ?
I will have a look at it to see if it still works .
Kind regards,

Hugo

Hello All, I am assuming, because of the lack of replies, that the only way to check a LNB is to install it on a dish and check for a signal or not. This seems quite odd to me in this technological age that suck it and see is the only option!
Regards, Peter

Thank you to all who replied to my request.
Peter

For some time I have been enjoying displaying Sentinel 3A imaging using the
EUMETCastViewer programme with the data obtained from the coda.eumetsat.int  site.
These past few days I have not been able to access the data and have the message :-
   HTTP Status 401 - Full authentication is required to access this resource.
Have checked the Scihub/CODA Config settings and my settings have not changed.
I am aware that there have been, very recently,  changes to the EUMETsat web site
and their introduction may be the cause.  Is it possible I may have missed an announcement
about changes which may be needed to EUMETCastViewer settings in order to resume Sentinel 3a
imaging or is re-registration with EUMETsat now required.   Is it likely that this facility has been withdrawn perhaps ?
Any advice would be helpful and appreciated.      John Morris

i have the diamond for sale pmed

Hello again, Does anyone know of a U.K. commercial source for this antenna. I know that there are a number of web sites out there with instructions on how to make this antenna but for a number of reasons I need to purchase one ready made?
Regards, Peter

On 03/12/2020 13:44, geojohnt via groups.io wrote:

David,
Twitter??
That's what birds do, isn't it. (:-))
I really must join the 21st C?
I have to say, though I didn't spend much time on the website, that although it looked rather classy, I couldn't find what I wanted as quickly as before.
Well, I didn't find it.
"Too much 'information'" (text) to plough through.
Regards,
John.

As both EUMETSAT and ESA are regular posters on Twitter I recommend you join. You can simply "follow" those you wish to. More info:

https://help.twitter.com/en/using-twitter/create-twitter-account

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

Ernst, THANK YOU once again for a useful clue!
I have looked again at the problem.
I have discovered that it is nothing to do with the No IMPF configuration field found in prologue warning. it is a problem with loading the BlackMarble file.
Setting up a simple script I discovered this error being output:

Don't know how to open the following files: {'/home/francis/FG-Docs/Downloads/BlackMarble_Images/BlackMarble_2016_01deg_geo.tif'}

So enabling the satpy debug and looking again at the output I found the answer:
SatPy could not open the BlackMarble tiff file because the rasterio module was not installed. Once I installed that, the image was created.
Problem Solved!

I have the LNB you mentioned. So you think the signal quality I have correspond with the dish size?

Giftmacher

A 85cm dish is about the bare minimum for acceptable Basic Service and maybe some HVS-1.
I recommend a 110cm -125cm dish and the Inverto Black Ultra HGLN LNB that many of us use.

Ernst

Hi again, I was tinkering with antenna yesterday and SNR increased from 10.8 to max.11.8-12, but I
think the quality of 58% is still low, should it be better on a 85cm dish? Could that cause the problem I'm experiencing?