Date   

Re: FSD

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., "Alan Sewards" <alan.sewards@c...>
wrote:
I have seen the postings regarding the lack of FSD imagery but I
have also not received any LRIT since the morning of Sept 22nd. Is
this general?

No, LRIT has been coming in here.
Check that you have the PID for LRIT added: decimal 301


Regarding Douglas' comments below, I appreciate that the OPS
office is likely pressed, but email is not the best method for
letting people know on a continuing basis, particularly when one has
a 24/7 satellite channel at one's disposal.

They _are_ using the satellite, but had a fault which was preventing
the messages getting through! Arrgh!

Cheers,
David


Re: FSD

Alan Sewards <alan.sewards@...>
 

Sorry about my last posting - I had omitted to include the special PID for
LRIT when setting up the Technisat software on the new machine!
Best regards - Alan

Alan Sewards
email: alan.sewards@...
web site: http://asewards.free.fr


Re: FSD is back then

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "James Brown" <james@...>
To: <MSG-1@...>
Sent: Thursday, September 25, 2003 10:15 AM
Subject: [MSG-1] FSD is back then


Title says it all - getting GMS ch 26 as I write.

James
--
James Brown
...and messages are back see 'News' tab.
Well done to all.

Douglas.


Re: FSD

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

--- In MSG-1@..., "Alan Sewards" <alan.sewards@c...>
wrote:
Sorry about my last posting - I had omitted to include the special
PID for LRIT when setting up the Technisat software on the new
machine!
Best regards - Alan
It just goes the highlight the need for care when setting up these
systems, and actually reading the instructions! Now, where did I
put the instructions......


MSG-1

Trevor Davies <g0jix@...>
 

Folks

I have to post this thank you to David via the site.

I had lost my registration details for Msg Data Manager and asked David if he would oblige.
My request was made at 13:46 and the detail was returned at 14:00..

BRILLIANT!!

Thank you David

Trevor G0JIX


Re: Equipment for receiving MSG-1

Timestep <Information@...>
 

From: Dave Cawley
Timestep Dartmouth England
e-mail Information@...
Web site http://www.Time-step.com
Tel. +44 (0)1803 833366
Fax. +44 (0)1803 839498

Any WEFAX user would be overwhelmed by HRIT on a single computer !!

Dave


'Overheating' SkyStar 2 cards.

johnrigsec@...
 

All,

I have taken this matter up with TechniSat who are not aware of any 'problem'
or
duff cards (my words).

They say if you install your SkyStar card next to your graphics card then
over
heating is likely.
They recommend a spare slot between the Skystar card and any other card.
And say ' Nowadays an additional cooler for PCs with high loaded PCI cards is
recommended.'

Regards,
John Tellick.


Re: Equipment for receiving MSG-1

johnrigsec@...
 

In a message dated 25-09-03 14:38:25 GMT Daylight Time,
agm@... writes:

John, I believe a lot of people just look at the weather perhaps once a
(work)day if the weather is a bit 'boring' as in the SE at the moment
Guy,

BORING?!
All the endless sunshine we have been having?
I'm as brown as a berry!

No, seriously, I take you point.
I'm rather surprised at the number of 2 computer set-ups that have come to
light
during the survey.
And, I see that a mini discussion has started regarding 1 or 2 computers.
This is good as I hope 'we' will be able to point future users as to the sort
of system
they require if they just want to do A, B or C.

Regards,
John.


Re: MSG equipment survey.

johnrigsec@...
 

All,

Once again many thanks to the many users who have responded and please
forgive me that I have not got around to thanking everyone individually.

There are some interesting and I think useful bits of information coming to
light
and I'm quite surprised at the number of users using 2 computers.

Dave Cawley and Arne reminded me that memory speed is rather important in
the system - which I'd not asked for.
Also Dave felt FSB was important.

If you are receiving EUMETCast and have not responded to the survey - a
description of the reception equipment and computer/s you are using would
be helpful to get an overall picture.

Please e-mail me directly, rather than clutter up the user groups.
johnrigsec@...

Regards,
John Tellick.


Re: Equipment for receiving MSG-1

johnrigsec@...
 

In a message dated 22-09-03 20:50:27 GMT Daylight Time, a.van.belle@...
writes:

But running Geosatsignal and animation additionally is too heavy for
the amount of memory and causes loss of missing segments, even on my
intel P4 2.4 GHz with 1024 Mb DDR memory running Windows 2000 SP3.
Hi Arne,

Thanks for more useful information and advice.

Now, why would you want to run Geosatsignal (as well as MDM) - what is it and
what does it do?

I believe David's MDM now handles animation.
Are you saying that MDM's animation will cause problems with data reception?

Do you (anyone) need to store 20,000 files of raw data?

A lot to learn.

Best wishes,
John.


Re: Equipment for receiving MSG-1

Timestep <Information@...>
 

From: Dave Cawley
Timestep Dartmouth England
e-mail Information@...
Web site http://www.Time-step.com
Tel. +44 (0)1803 833366
Fax. +44 (0)1803 839498

John

This is good as I hope 'we' will be able to point future users as to
the sort
of system <<<

We don't need to point users. They can start on a single computer, if they
like it, then fine. If not then two. Let them experience life.........

I chose one computer, John, what is your set up ?

Dave


Re: 'Overheating' SkyStar 2 cards.

Alan Sewards <alan.sewards@...>
 

I had occasion recently to switch my SkyStar card from one machine to
another. It had been running continuously for several weeks when I turned
off the machine and removed it. It was warm, but not hot, i.e. there were no
objects on it one could not touch. I have known video cards much warmer than
it was. So my card does not have an overheating problem. I did and do have
spare slots between the card and other cards - in fact, I put the SkyStar
card in a slot near the bottom as I felt that a cold wall next to it would
be helpful.

Regards - Alan

----- Original Message -----
From: <johnrigsec@...>
To: <MSG-1@...>; <rig-l@...>
Sent: Friday, September 26, 2003 8:42 PM
Subject: [MSG-1] 'Overheating' SkyStar 2 cards.


All,

I have taken this matter up with TechniSat who are not aware of any
'problem'
or
duff cards (my words).

They say if you install your SkyStar card next to your graphics card then
over
heating is likely.
They recommend a spare slot between the Skystar card and any other card.
And say ' Nowadays an additional cooler for PCs with high loaded PCI cards
is
recommended.'

Regards,
John Tellick.






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Re: Equipment for receiving MSG-1

Timestep <Information@...>
 

From: Dave Cawley
Timestep Dartmouth England
e-mail Information@...
Web site http://www.Time-step.com
Tel. +44 (0)1803 833366
Fax. +44 (0)1803 839498

John

I don't know what your quest is here. Sam and I both run animation on a
single computer, and we could run several computers if we wanted to. We
choose to use one computer.

John, could it be, that you are still not receiving MSG at all ? In which
case why don't you telephone Sam or me, or even fellow RIG committee member
Mark Clark for some one to one assistance ?

Regards

Dave


Re: Equipment for receiving MSG-1

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Now, why would you want to run Geosatsignal (as well as MDM) -
what is it and
what does it do?

I believe David's MDM now handles animation.
Are you saying that MDM's animation will cause problems with data
reception?

The MSG Data Manager handles animation with helper programs. There
is a choice of two optional add-on programs:

- MSG Animator - monochrome only real-time animations of selected
regions of the full-disk images. MSG-1 specific, and integrated
with the MSG Data Manager to achieve real-time operation.

- GeoSatSignal - false-colour, multi-channel processing from any
geostationary satellite, including remapping to standard map
projections (polar stereo, Mercator etc.), land-sea colour lookup
tables, and weather chart overlay. Not MSG-1 specific.

Do you (anyone) need to store 20,000 files of raw data?
MSG-1 produces about 15000 files per day, so if you want to
reprocess the data at all, that's what you need as your daily
storage requirement.

It seems from what Arne says that even the most powerful computer
today can loose segments if you make it do enough extra work. Using
a Pentium III 550MHz for receive-only, I have seen missing segments
with only slight extra loading. Even running Internet Explorer can
cause problems. On the other hand, running a disk defrag seems OK.
(Defrag does not use the TCP/IP stack whereas Internet Explorer
does. The DVB software uses TCP/IP internally. Co-incidence?).

As Dave says, there is nothing to prevent people starting with a
single-PC system, and migrating to two PCs in the future is that's
required. But adding Eumetcast reception and MSG-1 processing and
animation to a heavily loaded existing PC with too little memory is
not something I would advise anyone to do!

Cheers,
David


Re: 'Overheating' SkyStar 2 cards.

John Parkins <john@...>
 

Hello john,

Sorry somehow managed to post this to the rig-l group first time
round.......


Well Technisat want to make their minds up.

"3. Now you have to choose a free PCI slot. If possible choose the PCI slot with
the designation ᅵ0ᅵ. (first PCI slot). So you make sure, that the board first will
be checked for functionality. Then place the SkyStar PCI in. Unscrew the
slotï¿œs metal dust protector located on the back cover of the case. Lay the
protector on the ground to one side."

I quote from Technisat own installation instructions, slot "0" being
the one next to the AGP slot........

So not always best to follow the instructions to the letter.


Friday, September 26, 2003, 7:42:00 PM, you wrote:

jac> All,

jac> I have taken this matter up with TechniSat who are not aware of any 'problem'
jac> or
jac> duff cards (my words).

jac> They say if you install your SkyStar card next to your graphics card then
jac> over
jac> heating is likely.
jac> They recommend a spare slot between the Skystar card and any other card.
jac> And say ' Nowadays an additional cooler for PCs with high loaded PCI cards is
jac> recommended.'

jac> Regards,
jac> John Tellick.


--
Best regards,
John mailto:kvp@...


Re: Equipment for receiving MSG-1

James Brown <james@...>
 

Now, why would you want to run Geosatsignal (as well as MDM) - what is it and
what does it do?
Did you REALLY mean you are unaware of Geosatsignal John? Or are you only subscribed to the MSG list? I thought everyone on the list knew of this brilliant programme! I am amazed - but be prepared to be amazed yourself. Full colour animations using three of the MSG channels, overlays of Bracknell charts, temperature calibration read out, zoom in and out, the list goes on...

I think David might let you have a trial license if you want to dip your toe in.

Cheers,

James
--
James Brown


Re: Equipment for receiving MSG-1

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "James Brown" <james@...>
To: <MSG-1@...>
Sent: Saturday, September 27, 2003 9:23 AM
Subject: Re: [MSG-1] Re: Equipment for receiving MSG-1


Now, why would you want to run Geosatsignal (as well as MDM) - what is it
and
what does it do?
Did you REALLY mean you are unaware of Geosatsignal John? Or are you
only subscribed to the MSG list? I thought everyone on the list knew of
this brilliant programme! I am amazed - but be prepared to be amazed
yourself. Full colour animations using three of the MSG channels,
overlays of Bracknell charts, temperature calibration read out, zoom in
and out, the list goes on...

I think David might let you have a trial license if you want to dip your
toe in.

Cheers,

James
--
James Brown

I agree with every word.
For general use of GeoSatSignal see part 2 of my recent article in RIG
Journal 70, P82 and for some specific comments relating to its use with MSG
see my article about to come out in RIG 74 with lots of images courtesy of
GeoSatSignal 4.

Regards
Douglas.


Re: 'Overheating' SkyStar 2 cards.

M5WJF <m5wjf.qthr@...>
 

Hi All,

I've not had any overheating of the Skystar 2 Card whilst installed
on an AMD Athlon XP 2200+, and on my system I had every PCI Slot
filled, indeed I had a Win TV BT878 Decoder one side of it and a PCI
2x Serial the other side without problems.

I must admit to having four case fans, two fans on a Ti4400 AGP
Card, and one fan attached to the board chipset, in addition to the
normal CPU & PSU fans. Maybe a lesson here?

At the moment I've transferred the Skystar to an AMD Athlon 1.2GHz,
with only three slots populated, this will be a stand alone receiver
PC, no overheating observed as yet, but there is a case fan.

73 de Wayne M5WJF


Solar outages to be expected on MSG-1 next weeks

a_van_belle
 

Solar outages to be expected on MSG-1 in Spring and Autumn:

Twice a year, in the spring and the fall the sun passes across the equator
directly behind each geo-stationary satellite in the Clark belt. When the
main beam of our Hotbird dish is in direct line of sight with the sun, a
sun outage occurs. The LNB is bombarded by the sun's RF radiation focussed
by the dish. This causes a drastic deterioration of the receive C/N
(carrier to noise ratio). Basically, the satellite signal is overwhelmed by
the unwanted signal from the sun; the signal from the sun is what we call
noise. This phenomenon is also known as Sun transit or Solar Interference.
Solar outages only affect downlinks (receivers), not uplinks
(transmitters). They also occur in cloudy weather, as the RF radiated by
the sun is only dampened slightly by clouds.
A solar outage will effectively cause about 10 minutes loss of signal from
that satellite. On the days before and after when the sun is directly
aligned with that satellite there will be less outage. The actual days and
times depend on your latitude and longitude, longitudinal position of the
satellite, diameter of the dish and the received frequency. The larger the
dish diameter and higher the frequency, the shorter time and the fewer days
sun outages last.

Can it damage my system?
Modern LNB's can handle the high levels of RF noise (using moderate sized
dishes). But during a solar outage all visible sunrays will be focused on
your LNB. Normally a LNB can cope with this, but in exceptional cases (a
wet, shiny dish surface and bright, sunny weather), the plastic cap
covering your LNB can burst!

Can I prevent this?
You cannot block the RF noise from the sun without blocking the signal from
Hotbird, so everyone will experience loss of signal during a solar outage.
But you can block the visible sunrays by putting a non-transparent plastic
bag over the LNB or dish without blocking Hotbird's signal. Alternatively
you could swing the dish out of position during a sun outage to prevent
damage to the LNB.

When will I be affected?
To calculate the date and time of solar outages you need to know your
latitude and longitude, the longitudinal position of the satellite, the
receive frequency and the diameter of your dish.
David Taylor has extended WXtrack to calculate solar outages (registration
required). Use version 3.4.0.705 or newer and go to View, Solar outage...
Check the default values already entered, and then go to the "Outage List"
tab.

For my location in the Netherlands, solar outages in Fall 2003 for Hotbird
6 are predicted for October 7 to 15, between 10:41 and 10:55 UTC with a
peak outage on October 11.
Receive systems for Meteosat 5/6/7, GOES, GMS (1691 MHz band) will be
affected too.

For a full explanation look at: http://www.geo-orbit.org/sizepgs/Noise.html
and http://www.david-taylor.myby.co.uk/wxsat/atovs/solar-outages.htm

Arne van Belle
Co-ordinator Radio Observers
Werkgroep Kunstmanen
N51.774 E4.612

Thanks to David Taylor for extending his WXtrack and editorial work on this
article.


Re: Equipment for receiving MSG-1

a_van_belle
 

Thanks David, James and Douglas for replying,

To take full benefit of the MSG-1 data is quite a challenge, for both hardware and operator.
We all started with the basics, receiving and decoding.
But once you have seen these wonderful, Full colour, remapped, full day, MSG-1 animations you want them too!

Greetings,
Arne van Belle