All,

I hope that MSG users in the UK had the same surprise as me this morning when
picking up the morning post?
There amongst the Christmas cards was my Met. Office License Agreement for
the
use of MSG Data.

I hope that you all received yours - or will do so in a couple of days.

What an end to the year?

Regards,
John Tellick.

Lawrence,
Use the free Zone Alarm firewall. It is configurable and seems to work
well.

Best regards - Alan

--- In MSG-1@yahoogroups.com, Lawrence <lawrence@a...> wrote:

In order to use MSG DM across a home network, I have had to

disable the XP Pro firewall. When it is enabled, the other
computers on the network cannot see the main (processing) computer.
Does anyone know whether the MS firewall can be taught that the
internal network is OK? I have not found any reference to this in
MS help files.

TIA

Lawrence Harris

I've seen no problems with this. I run a router, which could
provide DHCP addresses, although I have actually made the PCs have
static addresses. All the PCs run Zone Alarm, and the only setting
required is to say "trust the local network", which it sets by
default in any case. Each PC has the appropriate entry in &#92;system32
&#92;drivers&#92;etc&#92;hosts to enable it to find the other PCs. I run a
workgroup, and not a domain.

You should be aware that the XP Firewall only works to block
incoming requests, if a virus gets on your system it can do what it
wants. IMHO, it's better to use Zone Alarm which allows you to
specifically control which programs have access to the local network
and which have access to the Internet. On my Receiver PC I have
allowed access for Setup4PC, Server4PC and TQrecv. There was no
need to enable special access for the MSG Data Manager on the
Processing PC.

Cheers,
David

I

Exactly the same here James. I have 2 computers on a simple (cross over)
network and either I wait a few minutes or 'force' recognition on start up.
I consider myself reasonably competent with computers but with one major
exception.....networks ! God bless the XP Network Wizard.

Regards
Douglas.

LOL Douglas! Yes indeed - I now consider myself to be a network expert because of all the problems I have had at one point or another!! The only thing is, I haven't a clue as to how they work, but if your problem happens to have matched mine - then of course I am an expert at that point!!

My network regularly goes down, I've had to re-install drivers for the access points, rename connections that for some strange reason become connection 3, followed by connection 4 etc. Discover that I hadn't logged all the computers in the same workgroup, unplug devices which have inexplicably locked up - usually on the wife's computer - , mains blips which have hung up the router, and in terms of re-booting - I am the King!!

Cheers,

James
--
James Brown

Lawrence I found this a nightmare, as was Zone Alarm. I just work with Cisco VPN
software running now (even though I have no actual VPN installed). No problems
with that.

Robert




<lawrence@astronomer.plus.com>:

In order to use MSG DM across a home network, I have had to disable the
XP Pro firewall. When it is enabled, the other computers on the network
cannot see the main (processing) computer. Does anyone know whether the
MS firewall can be taught that the internal network is OK? I have not
found any reference to this in MS help files.

TIA

Lawrence Harris


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------------------------------
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tel and fax: 44 (0) 1352 714456

In message <n6abuv8416ffo8717peanag8939rf69fgc@4ax.com>, Lawrence <lawrence@astronomer.plus.com> writes

In order to use MSG DM across a home network, I have had to disable the
XP Pro firewall. When it is enabled, the other computers on the network
cannot see the main (processing) computer. Does anyone know whether the
MS firewall can be taught that the internal network is OK? I have not
found any reference to this in MS help files.

TIA

Lawrence Harris

Hi Lawrence,

Do you mean not at all or it takes a long time for the network to establish the computers in the workgroups and to begin to access the files?

I can use a laptop with Windows XP home edition to access the main computer (also XP home)via a 11mHz Wireless router/ modem network, both are firewalled and files come across OK. But it can take several minutes for the computers to begin to recognise the existence of each other.

Cheers,

James
--
James Brown

In order to use MSG DM across a home network, I have had to disable the
XP Pro firewall. When it is enabled, the other computers on the network
cannot see the main (processing) computer. Does anyone know whether the
MS firewall can be taught that the internal network is OK? I have not
found any reference to this in MS help files.

TIA

Lawrence Harris

Despite of the heavy gale over here no missing segments on December
20:
______________________
Date: 2003-12-20
Missing cycles report
(none)
Late segments report
(no report)
Missing HRIT & LRIT segments report
(none)
Missing rebroadcast & derived segments report
Cycle: 0000
g9-wv all missing
DCP report
158 DCP sequence numbers found, 0 missing
DCP/WMO report
231 DCP/WMO sequence numbers found, 0 missing
MDD report
193 GTS sequence numbers found, 0 missing

Today (Dec. 21) up to 14:00 no missing segments in L/HRIT.
80 cm Dish wall mounted.
But we might expect snow in the evening over here !

Thanks for the offer Ferdinand, I only missed some images when the
disc was full. Problem is that I still like to keep RawData for a
couple of days.
It is the deleting of this data that has to be done with care not to
overload the disc.

Greetings,
Arne van Belle

On Sun, 21 Dec 2003 10:13:51 -0000, you wrote:

I noticed some complete signal loss on Sky Digital last night( especially
annoying as I paid for the movie!). This has happened on a few occasions
over the past few months - could this be due to electromagnetic
interference? Certainly there has been a lot more sunspot activity, although
I'm not aware of any recent occurrences.

More likely your dish is out of alignment slighly.

--
Steve Blackmore

I noticed some complete signal loss on Sky Digital last night( especially
annoying as I paid for the movie!). This has happened on a few occasions
over the past few months - could this be due to electromagnetic
interference? Certainly there has been a lot more sunspot activity, although
I'm not aware of any recent occurrences.
Roger

We had quite a heavy storm in The Netherlands over the night (force 9) with
gusts of 110 km/h so I expected loads of missing segments when checking the
system this morning. The pole mounted dish (1 m) must have been subject to
heavy torques. To my surprise in HRIT the Data Manager's missing segments
overview showed nothing missing in HRIT (channels 1-2-3-4-6-9-12 on), nothing
in LRIT and for FSD I found:
cycle 0000 g9-wv
cycle 0600 g10-ir and wv
cycle 0600 g12-ir and wv
cycle 0600 g9-vis seg 4-5-6

An encouraging result that shows that when taking the time to make the best out
of the antenna setup, the effort is paid back in harsh times.

As to influence of snow on reception, experience tells me that a clean dish
usually can be taken care of by using a long stick with a brush attached
(unless mounted in an inaccessible place). What does go beyond control is the
snowstorm itself when the density of flakes in the signal-path may easily cause
total disruption of the data stream. There most likely a broomstick will not
help.

Arne, if I can help you out with data that you unwillingly deleted, just give
me a call.

Ferdinand

About snow and attenuation; snow drifts can be a disaster for 12

Ghz links, as the snow can stick to the dish, changing the parabolic
shape or grow on the LNB blocking the path.

Professional systems use heated dishes to get rid of this !

Great to see you back, Arne. Many thanks for your hints on system
optimisation.

Just trying to think of how to redirect the "hot air" on certain
Yahoo groups to heat up my dish.....

Cheers,
David (with some signal now returning...)

Hello Guys,

Just back from a full week with the flue.

My receive PC is still running fine, only missing segments if I do
something foolish like deleting a full day's of raw data.

This is what I can state with almost 100 % certainty:

Every job that "overloads" your disk for over 10 seceonds is very
likely to cause missing segments. In fact TQ misses the connection to
the Eumetcast channel, causing a complete segment missing.
Eumetcast doesn't offer a second chance to connect, if your PC
is "busy" for only 10 seconds on the wrong moment you miss connection
and a complete segement.

Try to defragment your disk every week, and/or try to improve disk
performance. I did install a 40 GB 7200 RPM disk with 8 Mb cache,
this gave a large improvement compared to the 20 Gb 5400 rpm disk
with 2 mb cache.

In fact I do run Tellique and MDM on a PIII at 1 GHz with only 512 Mb
ram since December 1st (all PID's and channels on !). Not an optimal
solution I must warn, administering should be done with great care to
prevent los of segments.
I switched the network interface back to 10 Mbit, just to prevent
overloading the disk when collecting the images over the network.


About snow and attenuation; snow drifts can be a disaster for 12 Ghz
links, as the snow can stick to the dish, changing the parabolic
shape or grow on the LNB blocking the path.
Professional systems use heated dishes to get rid of this !
But even professional systems loose signal of there are heavy shower
clouds in the path !

Greetings,
Arne van Belle

Roger thanks for your mail. I do defrag my drive once every four or five
days and this segment loss problem started 24 hours after the last defrag.
However I am going to defrag again later when I shut down MSG. Although my
computer spec.is not great ( Athlon 1200, 768 PC100/133 ram ) I have been up
and running with MSG now for about 3 months with great success and no
segment loss at this end even when using the computer for other jobs.
Something in the last 48 hours has changed --- the real fun part is trying
to establish what !!

Thanks again for your help.

Regards

Ian.

David, I wish I could blame it on snow, but up here 7 miles north of Dundee
on the coast we have not had any snow and I am probably about 1000 feet
above sea level. Granted there has been some heavy rain but my signal level
( and SNR ) while as expected down a little have certainly not caused my
problems.

I can only assume that you must be getting seriously heavy snow if your
signal is as low as that. Another factor can be the size of the flakes. Very
heavy snow particularly with big flakes can cause disruption, but loss of TV
picture is very rare. Of course dish size, alignment etc. play a part as
well.

Regards

Ian.

Ian
I assume you have defragged the drive used to MSG images? This application
fragments a disk like nothing I've seen before. I have actually created a
specific partition just for MSG data - that way I can keep it under better
control.
Regards
Roger

--- In MSG-1@yahoogroups.com, "Ian S Deans" <ian@i...> wrote:

David,

Thanks for your mail re yesterday's missing segments. Things have

got even worse today and I just don't know why.

Snow, I guess. I am now down to an alternating Out-of-Lock
indication, and an SNR of 1.4dB. The uncorrected blocks counter
keeps wrapping round the end of the scale! There is no majow sno
covering on the LNB itself, some on top of the LNB but nothing very
obvious on the front surface. Mind you, it's difficult see
properly. The outside temperature is 0.6C, so I don't know whether
to expect freezing or not.

Is domestic satellite TV affected like this?

Cheers,
David

Ian, you may have seen I had a similar problem last weekend. I forget your
previous messages but have you tried switching off, pulling the power plugs
out, taking a walk and then starting up again when you get back?
Robert


Quoting Ian S Deans <ian@isdeans.freeserve.co.uk>:

David,

Thanks for your mail re yesterday's missing segments. Things have got even
worse today and I just don't know why. After 3 months with absolutely no
segment loss problems ( outwith Eumetsat of course ) I am now experiencing
all sorts of difficulties. If I only use the computer for MSG I am losing on
average 1 or 2 segments per cycle but if I run Animator, look at mail in
Outlook Express, go online etc. segment loss gets considerably worse.
So far nothing obvious has changed and signal level is not a problem. Up to
yesterday I could use the computer for normal day to day tasks without the
slightest problem and now if I as much as look at it I lose segments. Very
strange and also very frustrating. Even preparing this mail is causing
segment loss.

Thanks again

Ian.



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------------------------------
Professor Robert Moore
Department of Sociology, Social Policy
and Social Work Studies
The University of Liverpool
Eleanor Rathbone Building
Bedford Street South
Liverpool
L69 7ZA

tel and fax: 44 (0) 1352 714456

David,

Thanks for your mail re yesterday's missing segments. Things have got even
worse today and I just don't know why. After 3 months with absolutely no
segment loss problems ( outwith Eumetsat of course ) I am now experiencing
all sorts of difficulties. If I only use the computer for MSG I am losing on
average 1 or 2 segments per cycle but if I run Animator, look at mail in
Outlook Express, go online etc. segment loss gets considerably worse.
So far nothing obvious has changed and signal level is not a problem. Up to
yesterday I could use the computer for normal day to day tasks without the
slightest problem and now if I as much as look at it I lose segments. Very
strange and also very frustrating. Even preparing this mail is causing
segment loss.

Thanks again

Ian.