Date   

Re: Signal Quality

Douglas Deans <dsdeans@...>
 

----- Original Message -----
From: "David J Taylor" <gm8arv@yahoo.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Monday, June 15, 2009 12:20 PM
Subject: Re: [MSG-1] Signal Quality


Ian Deans wrote:
I noticed this morning losses on Metop / Met-9 and RSS at approx.
11.10 /
11.15 UTC. I was out at the time so was not monitoring, but I am now
seeing my signal quality very much reduced and varying a great deal (
down over 25% at times ).

The weather here is overcast with slight drizzle, but that would not
cause the reductions I am seeing. Have to assume that the weather
conditions in Germany are causing the problems.

Regards
Ian.
Indeed, Ian. Bad weather in Stuttgart has been reported, and the
Europe-wide view of EUMETCast shows that we are all seeing dropouts:

http://www.satsignal.eu/mrtg/EumetcastEurope.html

Cheers,
David
Doesn't really matter here as massive hail storms (thunder and lightning) have put my system out for nearly 2 hours so far.
All my garden efforts in the past few months wrecked with rain and hail intensities I really haven't seen here before.
No wind (virtually in a col at the moment) so it appears to be seated over us.

Regards
Douglas.


Re: Signal Quality

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Ian Deans wrote:
I noticed this morning losses on Metop / Met-9 and RSS at approx.
11.10 /
11.15 UTC. I was out at the time so was not monitoring, but I am now
seeing my signal quality very much reduced and varying a great deal (
down over 25% at times ).

The weather here is overcast with slight drizzle, but that would not
cause the reductions I am seeing. Have to assume that the weather
conditions in Germany are causing the problems.

Regards
Ian.
Indeed, Ian. Bad weather in Stuttgart has been reported, and the Europe-wide view of EUMETCast shows that we are all seeing dropouts:

http://www.satsignal.eu/mrtg/EumetcastEurope.html

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: Signal Quality

Robert Denton
 

--- In MSG-1@yahoogroups.com, "Ian Deans" <isdeans1.-_@...> wrote:

I noticed this morning losses on Metop / Met-9 and RSS at approx. 11.10 /
11.15 UTC. I was out at the time so was not monitoring, but I am now
seeing my signal quality very much reduced and varying a great deal ( down
over 25% at times ).

The weather here is overcast with slight drizzle, but that would not cause
the reductions I am seeing. Have to assume that the weather conditions in
Germany are causing the problems.

Regards
Ian.
Ian,
My turn to return the message :o) The same is happening here, but hot and sunny here,just been out to check my dish/lnb which check out fine but system is showing the same symptoms as yours. You are not alone!
Best Wishes
Rob.


Signal Quality

Ian Deans <isdeans1.-_@...>
 

I noticed this morning losses on Metop / Met-9 and RSS at approx. 11.10 / 11.15 UTC. I was out at the time so was not monitoring, but I am now seeing my signal quality very much reduced and varying a great deal ( down over 25% at times ).

The weather here is overcast with slight drizzle, but that would not cause the reductions I am seeing. Have to assume that the weather conditions in Germany are causing the problems.

Regards
Ian.


Re: Since about 16:20 UTC no modulation on Eurobird 9E.

seggins2000
 

----- Original Message -----
From: David J Taylor
To: MSG-1@yahoogroups.com
Sent: Monday, June 15, 2009 6:14 AM
Subject: Re: [MSG-1] Since about 16:20 UTC no modulation on Eurobird 9E.





Alan Banks wrote:
Hi Werner,
No problem here.
David has had some problems - probably local heavy rain. Everyone else
seems OK
see
http://www.satsignal.eu/mrtg/EumetcastEurope.html
[]
Alan
Correct, Alan. Thunderstorms and heavy rain here in Edinburgh. I guess
it must be all the ice crystals in the cloud mass. Basic signal level
seems not bad, but I don't recall these problems on HotBird-6.

I hope a cold reboot cures Werner's problem.

Cheers,
David

David,

Eurobird is definitely more susceptible to drop-out in rain. We have just a
shower here composed of very large drops. It caused packet loss, a
measureable BER and an SNR down to 2.5 dB. I haven't measured a BER for a
very long time.
Cheers
John


Re: Since about 16:20 UTC no modulation on Eurobird 9E.

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Alan Banks wrote:
Hi Werner,
No problem here.
David has had some problems - probably local heavy rain. Everyone else
seems OK
see
http://www.satsignal.eu/mrtg/EumetcastEurope.html
[]
Alan
Correct, Alan. Thunderstorms and heavy rain here in Edinburgh. I guess it must be all the ice crystals in the cloud mass. Basic signal level seems not bad, but I don't recall these problems on HotBird-6.

I hope a cold reboot cures Werner's problem.

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: Since about 16:20 UTC no modulation on Eurobird 9E.

Robert Moore
 

Fine here too - but we could do with some of that rain. My water butts are empty and the ground is like iron.

Robert

--- In MSG-1@yahoogroups.com, Alan Banks <alan@...> wrote:

Hi Werner,
No problem here.
David has had some problems - probably local heavy rain. Everyone else
seems OK
see
http://www.satsignal.eu/mrtg/EumetcastEurope.html
Guess it must be a local problem. Try a hard reboot.
Regards

Alan

w_guenzl wrote:
Hi to all,

I have since about 16:20 UTC no modulation on Eurobird.
The T is yellow, no operator identification from Trans-
ponder. Signal quality = 71% A short time BER.

What is here the matter?

Werner.




------------------------------------

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http://www.satsignal.eu/wxsat/glossary.htm
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Re: Since about 16:20 UTC no modulation on Eurobird 9E.

Alan Banks <alan@...>
 

Hi Werner,
No problem here.
David has had some problems - probably local heavy rain. Everyone else seems OK
see
http://www.satsignal.eu/mrtg/EumetcastEurope.html
Guess it must be a local problem. Try a hard reboot.
Regards

Alan

w_guenzl wrote:
Hi to all,
I have since about 16:20 UTC no modulation on Eurobird.
The T is yellow, no operator identification from Trans-
ponder. Signal quality = 71% A short time BER.
What is here the matter?
Werner.
------------------------------------
Unsure what a term means? Check the Glossary at: http://www.satsignal.eu/wxsat/glossary.htm
Yahoo! Groups Links


Since about 16:20 UTC no modulation on Eurobird 9E.

w_guenzl <wguenzl@...>
 

Hi to all,

I have since about 16:20 UTC no modulation on Eurobird.
The T is yellow, no operator identification from Trans-
ponder. Signal quality = 71% A short time BER.

What is here the matter?

Werner.


Re: Since about 16:20 UTC no modulation on Eurobird 9E.

geojohnt@...
 

In a message dated 14/06/2009 22:52:15 GMT Daylight Time,
wguenzl@guenzl.net writes:

I have since about 16:20 UTC no modulation on Eurobird.
The T is yellow, no operator identification from Trans-
ponder. Signal quality = 71% A short time BER.


Hello Werner,

I think you have a problem.
I have had no breaks in the EUMETCast service today.

In fact, this evening I'm seeing the strongest signal ever from
EUROBIRD-9A indicated with a DVBWorld box.

Regards,
John.


Re: Outage - Saturday at 11:25 UTC?

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Alan Banks wrote:
Nothing here David. I've just got problems with a constantly tripping
RCD and therefore some corrupt data and rather too frequent 'outs'. I
find that the Skystar 2.6D card will up or down the SQ SNR either side
of an out. Nil else changes. Electrician can't find a fault, we've
unplugged most things, he says the RCD is fine and tests OK. Still
tripped at 03.30UTC today. You can see the effect on my reception
here.
http://www.alanbanks.org.uk/Skystar.html
the 11.00 yesterday and 03.30 today events show what I mean. The
others are manual restarts though with no change in SQ SNR.
Told him to replace RCD whether or not it tests OK. With luck will see
him Monday as he didn't turn up this morning as promised.

Alan

moan over
Thanks, Alan. Judging by the EUMETCast across Europe graphs, I was indeed the only one. Quite unusual. We did have heavy rain afterwards, but this was the signal right down into the red - retunes were triggered. We've seen level changes across a break before - might be something like the AFC not coming in correctly......

Pain about your RCDs. When the house was rewired last year I insisted that they put the computers on a separate RCD from the main supply, as the kitchen tripped something which took the computers down. I hope the new one is OK, whne you eventually get it.

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: Outage - Saturday at 11:25 UTC?

Alan Banks <alan@...>
 

Nothing here David. I've just got problems with a constantly tripping RCD and therefore some corrupt data and rather too frequent 'outs'. I find that the Skystar 2.6D card will up or down the SQ SNR either side of an out. Nil else changes. Electrician can't find a fault, we've unplugged most things, he says the RCD is fine and tests OK. Still tripped at 03.30UTC today. You can see the effect on my reception here.
http://www.alanbanks.org.uk/Skystar.html
the 11.00 yesterday and 03.30 today events show what I mean. The others are manual restarts though with no change in SQ SNR.
Told him to replace RCD whether or not it tests OK. With luck will see him Monday as he didn't turn up this morning as promised.

Alan

moan over

David J Taylor wrote:
I just had about a two minute outage here. Signal returned but strength is low. Gradually recovering. Just me?
Murphy's law as I just got an e-mail from Arne van Belle saying he was doing some signal strength tests!
Cheers,
David


Outage - Saturday at 11:25 UTC?

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

I just had about a two minute outage here. Signal returned but strength is low. Gradually recovering. Just me?

Murphy's law as I just got an e-mail from Arne van Belle saying he was doing some signal strength tests!

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: MPEF (again)

Ian Deans <isdeans1.-_@...>
 

Thanks for that David. I take the CLAI data but had totally forgotten that
the CLA is basically the same data but in bufr format. Sorry for any
confusion.

It really is quite a task now to keep up on all the various data and
formats, but at the same time it is superb that we have access to so much of
this data.

Regards
Ian.



--------------------------------------------------
From: "David J Taylor" <gm8arv@yahoo.co.uk>
Sent: Wednesday, June 10, 2009 9:14 AM
To: <MSG-1@yahoogroups.com>
Subject: Re: [MSG-1] MPEF (again)

Ian Deans wrote:
Robert the CLA data in the MPEF folder is in bufr format and is
therefore unusable.

Regards
Ian.
Ian,

You should also have .GRB versions, which work perfectly.

I now realise that the CLAI data is only sent every three hours, like the
CTH data, but the CLM data is sent every 15 minutes. Perhaps that was
what Robert saw.

Cheers,
David
--


Re: MPEF (again)

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Ian Deans wrote:
Robert the CLA data in the MPEF folder is in bufr format and is
therefore unusable.

Regards
Ian.
Ian,

You should also have .GRB versions, which work perfectly.

I now realise that the CLAI data is only sent every three hours, like the CTH data, but the CLM data is sent every 15 minutes. Perhaps that was what Robert saw.

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: MPEF (again)

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Robert Moore wrote:
David I'm sure I used to display the CLA (cloud analysis) files in
GRIBViewer along with cloud mask and cloud top height. I have the
latter two but the program no longer seems to recognise CLA even
though files can be seen in the directory by using 'My computer'.
I've always found CLA and CLH very interesting when used alongside
the vis/ir Met-8 and -7 imagery.

Robert
Robert,

Taking yesterday's data, I tried opening each of the three files:

200906091145-clai.grb
200906091145-clm.grb
200906091145-cth.grb

with the GRIB Viewer (I have a double-click association set up), and in each case there were four tabs displayed:

- Cloud Mask
- Cloud analysis
- Cloud top height
- CTH quality.

In the file GRIBviewerGroups.ini, which should be in the same directory as the GRIBviewer.exe file, check for an entry:

_____________________________________
[NameEnding]
1=CLM.grb,CLAI.grb,CTH.grb
_____________________________________


Further discussion of this issue would be more appropriate for the SatSignal Yahoo group.

Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: www.satsignal.eu
Email: davidtaylor@writeme.com


Re: MPEF (again)

Ian Deans <isdeans1.-_@...>
 

Robert the CLA data in the MPEF folder is in bufr format and is therefore
unusable.

Regards
Ian.

--------------------------------------------------
From: "Robert Moore" <rsmoore@liv.ac.uk>
Sent: Tuesday, June 09, 2009 11:11 PM
To: <MSG-1@yahoogroups.com>
Subject: [MSG-1] MPEF (again)

David I'm sure I used to display the CLA (cloud analysis) files in
GRIBViewer along with cloud mask and cloud top height. I have the latter
two but the program no longer seems to recognise CLA even though files can
be seen in the directory by using 'My computer'. I've always found CLA and
CLH very interesting when used alongside the vis/ir Met-8 and -7 imagery.

Robert


MPEF (again)

Robert Moore
 

David I'm sure I used to display the CLA (cloud analysis) files in GRIBViewer along with cloud mask and cloud top height. I have the latter two but the program no longer seems to recognise CLA even though files can be seen in the directory by using 'My computer'. I've always found CLA and CLH very interesting when used alongside the vis/ir Met-8 and -7 imagery.

Robert


Re: strange ligh noaa 17 image

geojohnt@...
 

In a message dated 09/06/2009 14:30:12 GMT Daylight Time,
giuseppe.cico@bcico.com writes:

It's Sun reflecting on sea surface.
You can see the same on yesterday's pass-orbit 36151 of N.17 at 12.18,
more or less at 35west.


Robert,

At certain times of the year you get sun glint on every pass giving you
multiple glints on joined passes forming the global GAC coverage.

Regards,
John.


Re: strange ligh noaa 17 image

Giuseppe Cico
 

On Tue, June 9, 2009 15:08, annarita altavilla wrote:

what this a strange light in the atlanthi aroud lat 30N e lot 30W
....

It's Sun reflecting on sea surface.
You can see the same on yesterday's pass-orbit 36151 of N.17 at 12.18,
more or less at 35west.

Ciao

Giuseppe

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