Date   

Re: HRV final segment in wrong position

a_van_belle
 

David,

Using MDM "Alfa" 124.240 I had no problems decoding HRV 0745 and 0900, no missing of shifted segments.
I have "Centre HRV window" "Upper" on and "Lower" off.

Greetings,
Arne van Belle


Re: Reception failure

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

At 20:36 UTC my system stopped receiving data and required a
reboot. I take it that no-one else saw this?
David. I had the following missing segments at 2036:-

Channels 1,2,3,4,5 Seg 3 4 5
Channels 6,7,8,9,10,11 Seg 2 3 4 5
Channel 12 Seg 6 7 8 9 10 11 12 13 14 15 16

From my Tellique log disconnected form announcement channel at 20:36:39
reconnecting at 20:41:53 which would account for the missing segments.

Peter
Peter - thanks for that. It seems that some people's system will recover
from these errors, other people not. We should look at this closer.

Perhaps people could send me data about last night's outage:

- did your system automatically recover?
- operating system
- processor
- memory
- DVB card version
- DVB card driver software (e.g. 4.2.2)
- source of software (CD from Tellique, CD from Eumetsat)
- version of Tellique software (e.g. 2.3.0a)

In fact, let's not restrict it to last night's outage, but to "any
otherwise unexplained stoppage", although last night's was obviously
common across everyone, so we are really trying to find that magical
factor which allows some people to carry on and others not.....

Cheers,
David


Re: Reception failure

Lawrence <lawrence@...>
 

Date: Sun, 19 Oct 2003 08:22:32 -0000
From: "David Taylor" <david-taylor@blueyonder.co.uk>
Subject:

At 20:36 UTC my system stopped receiving data and required a
reboot. I take it that no-one else saw this?

Cheers,
David
My system logged several missing segments but continued normally.

regards

Lawrence


Re: HRV final segment in wrong position

Peter Benney <tugboat@...>
 

Many thanks, Peter. Looks like I haven't cracked it yet! If you have a
broadband link, and can send the 0900 as well, that would help confirm my
diagnosis. By the way, which version of the MSG Data Manager are you
running?
On its way. V1.2.4.236 (Oct 14)

Peter


Re: HRV final segment in wrong position

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

If anyone has the 0745 or 0900 HRV 12n image from this morning,
perhaps they could e-mail it to me.
On its way David.

Peter
Many thanks, Peter. Looks like I haven't cracked it yet! If you have a
broadband link, and can send the 0900 as well, that would help confirm my
diagnosis. By the way, which version of the MSG Data Manager are you
running?

Thanks,
David


Re: HRV final segment in wrong position

Peter Benney <tugboat@...>
 

If anyone has the 0745 or 0900 HRV 12n image from this morning,
perhaps they could e-mail it to me.
On its way David.

Peter


Re: Reception failure

Peter Benney <tugboat@...>
 

At 20:36 UTC my system stopped receiving data and required a
reboot. I take it that no-one else saw this?
David. I had the following missing segments at 2036:-

Channels 1,2,3,4,5 Seg 3 4 5
Channels 6,7,8,9,10,11 Seg 2 3 4 5
Channel 12 Seg 6 7 8 9 10 11 12 13 14 15 16

From my Tellique log disconnected form announcement channel at 20:36:39 reconnecting at 20:41:53 which would account for the missing segments.

Peter


HRV final segment in wrong position

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Folks, I have known for some time that my software does not dela
correctly with the situation where the Prolog file is sent before
the final HRV segment. Under those circumstances, the offset is
read from the prolog file and immediately applied to any subsequent
segments. Therefore segment 24 may be shifted into the position it
should occupy for the next scan, rather than where it actually is
for the current scan.

This is easy to detect when the uppper segment is being moved, as it
was recently, but quite difficult otherwise. If anyone detects an
HRV image (preferably the mini 12n image) with this defect, would
they please point it out to me. I am now running a version of the
software which should bypass that defect, so I would like to check
it.

If anyone has the 0745 or 0900 HRV 12n image from this morning,
perhaps they could e-mail it to me. I believe that data would have
had the ordering problem. Actually, it may be easier later in the
day as the sun moves to the west.... Only send the image if you
have the "Centre HRV window upper" set.

Thanks,
David


Re: Reception failure

Douglas Deans <douglas@...>
 

----- Original Message -----
From: "David Taylor" <david-taylor@blueyonder.co.uk>
To: <MSG-1@yahoogroups.com>
Sent: Sunday, October 19, 2003 9:22 AM
Subject: [MSG-1] Reception failure


At 20:36 UTC my system stopped receiving data and required a
reboot. I take it that no-one else saw this?

Cheers,
David

Sorry David I was watching a film and shut down just before that for the
night.
Seemed a good day other than the current 12.30/12.45 sun problems.
Hope someone can confirm.

Regards
Douglas.


Re: More tellique problems

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

This morning at 0653 UTC, the tellique software shut itself down
after
having problems with the child process, almost identical to that which I
had
a few days ago and reported here. I did not notice this until a couple
of
hours later, and tried to restart tellique but it would not restart. I
had
to shut down the computer and restart it, whereupon tqrecv would start
and
run and everything else could be got back running again. I wish I knew
the
cause of this, but whatever the cause it does show that tqrecv is not
robust. Perhaps the newer version (is it officially approved by Eumetsat
yet?) may be better.
Alan,

Yes, with failures like this the present combination of hardware and
software cannot be relied on for unattended operation. There also seem to
be inconsistences in behaviour between different systems - due to .INI
file differences, I wonder? I just had a similar failure and the was with
the newer V2.3.1 client (which I have on beta test).

Cheers,
David


Reception failure

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

At 20:36 UTC my system stopped receiving data and required a
reboot. I take it that no-one else saw this?

Cheers,
David


Re: Test message....

Gerald Cahill <jock.cahill@...>
 

safe way. Irregardless of all the firewalls for Windows. Never
trust them

Gerald
2nd test
A.O.K David


LRIT receiving systems.

johnrigsec@...
 

All,

An American enthusiast posted a request on WXSAT-L for information regarding
LRIT receiving systems and I offered some suggestions.

For those not subscribed to WXSAT-L may I post my reply here which I hope may
possibly be of use to our American members of these two groups.

Also, I understand that Timestep are planning to have an LRIT receiver
available soon.

I apologise MSG-1 group that this is not really MSG but we might have to
grapple with
this sooner or later?

Regards,
John Tellick.
RIG.

+++++++++

Long before MSG-1 was launched I had discussions with several professional
manufacturers about the possible availability of amateur priced LRIT
receivers.
Two said if they could have a definite idea about such a market (amateur) and

how many units I thought they might sell they would consider developing such
a receiver.
It would I guess, just be a cut down version of the original receiver.

However, of course, we have been overtaken by events in Europe and a European
market no longer exists - for the time being and I have not been in touch
with them
for over a year now.

The firms were VCS in Germany - <A HREF="www.vcs.de">www.vcs.de</A> and UKW technik in Germany -
<A HREF="www.ukwtechnik.de">www.ukwtechnik.de</A>.

There is also <A HREF="www.gtielectronics">www.gtielectronics</A> in the States.
And, you should contact NOAA to see just what happened to their planned LRIT
receiving system.

It would also be worth contacting the Werkgroep Kunstmanen in Holland.
This is a very active Dutch group were beavering away with the complexities
of HRIT/LRIT, Viterbi and Reed Solomon coding et al, before things changed
over here.
Their website is - www.kunstmanen.nl.

Regards,
John Tellick.
Remote Imaging Group

+++++++++++++++


Re: Pid Prob resolved

Paul Telco <paul@...>
 

Hello David,

Presumably, what you were trying to achieve was to get the >FSD, but not the unwanted LRIT data from MSG-1?
Yes exactly. I leave the receiver PC going 24/7 but only run the processor PC when I am at home. (Someone recently called this 'Catch-up Mode') Consequently I have to be careful not to let too many files accumulate in the 'received' folder. Otherwise, using win98 and FAT32 combined with only 7GB of disk space, I get a blue screen of death after about a day.

There doesn't seem to be a way of achieving that with the >present Data Channel organisation, does there? If there >were more sub-division of the data channels, then you could >do that....
That would be perfect. I don't want LRIT but I do want FSD very much.

But, I did think that the MSG Data Manager would delete the >LRIT data from the Receiver PC even if you didn't process it, >so I don't quite understand what you were trying to do in the >first place.
MDM works perfectly in this. It deletes everything it should but as above, I don't always leave MDM going while the receive pc is receiving.

Paul


More tellique problems

Alan Sewards <alan.sewards@...>
 

Hi all,
This morning at 0653 UTC, the tellique software shut itself down after
having problems with the child process, almost identical to that which I had
a few days ago and reported here. I did not notice this until a couple of
hours later, and tried to restart tellique but it would not restart. I had
to shut down the computer and restart it, whereupon tqrecv would start and
run and everything else could be got back running again. I wish I knew the
cause of this, but whatever the cause it does show that tqrecv is not
robust. Perhaps the newer version (is it officially approved by Eumetsat
yet?) may be better.

Oh, and HRV is back over Europe, thank you!

Best regards - Alan

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


Re: Missing segments

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

I had my dish (88cm) mounted at the rear of the garage last Saturday and
it appears that since then I have lost far more segments than previously
and the signal quality although most of the time around 60% seems to
drop sometimes down to about 50% then up to 60-61% there are no trees or
anything else in front of the dish that would cause a problem, below I
have pasted the missing segment report for today so far, is anyone else
getting this many errors?

Cycle: 0245
msg-ch12, seg: 19
Cycle: 0300
g9-ir, seg: 1
Cycle: 0715
msg-ch01, seg: 7 8
msg-ch02, seg: 7 8
msg-ch03, seg: 7 8
msg-ch04, seg: 7 8
msg-ch05, seg: 7 8
msg-ch06, seg: 7 8
msg-ch07, seg: 7 8
msg-ch08, seg: 7 8
msg-ch09, seg: 7 8
msg-ch10, seg: 7 8
msg-ch11, seg: 6 7 8
msg-ch12, seg: 19 20 21 22 23 24
lrit-ch01, seg: 7 8
lrit-ch03, seg: 7 8
lrit-ch04, seg: 7 8
lrit-ch05, seg: 7 8
lrit-ch09, seg: 7 8
Dave, I had none of the missing segments you noted. Today has been 100%
OK for segments. It looks possible that cycle 0715 was not complete at
the time you produced the Missing Segment report, if not, then that's not
so good.

Some of us have found that after signal interruption, either therer is a
high missing segment rate, or the whole receiver PC needs to be rebooted.
I would suggest a receiver PC reboot as the first step to try. I have
also had two periods of a high missing segment rate, which I could not
explain. No high wind, no rain, and no obvious foreign bodies near the
dish and LNB. These went away after a few hours in one case, and a couple
of days in the other. To this day, I don't know what caused that problem.

Good luck with resolving this problem.

Cheers,
David


Missing segments

David Pykett
 

Hi

I had my dish (88cm) mounted at the rear of the garage last Saturday and
it appears that since then I have lost far more segments than previously
and the signal quality although most of the time around 60% seems to
drop sometimes down to about 50% then up to 60-61% there are no trees or
anything else in front of the dish that would cause a problem, below I
have pasted the missing segment report for today so far, is anyone else
getting this many errors?

Cycle: 0245
msg-ch12, seg: 19
Cycle: 0300
g9-ir, seg: 1
Cycle: 0715
msg-ch01, seg: 7 8
msg-ch02, seg: 7 8
msg-ch03, seg: 7 8
msg-ch04, seg: 7 8
msg-ch05, seg: 7 8
msg-ch06, seg: 7 8
msg-ch07, seg: 7 8
msg-ch08, seg: 7 8
msg-ch09, seg: 7 8
msg-ch10, seg: 7 8
msg-ch11, seg: 6 7 8
msg-ch12, seg: 19 20 21 22 23 24
lrit-ch01, seg: 7 8
lrit-ch03, seg: 7 8
lrit-ch04, seg: 7 8
lrit-ch05, seg: 7 8
lrit-ch09, seg: 7 8

Regards

Dave


Re: Test message....

Gerald Cahill <jock.cahill@...>
 

David J Taylor wrote:

Using REPLY function
Gerald, thanks for your test. I don't doubt that Yahoo's REPLY function
works correctly, but it isn't working for me here since the MS Windows
Security updates this morning. This is true whether I use Windows XP SP1
or Windows 2000 Pro SP3.

Thanks,
David
OK David, I only and always use Linux for email and internet use. Only safe way. Irregardless of all the firewalls for Windows. Never trust them

Gerald


Re: Test message....

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Using REPLY function
Gerald, thanks for your test. I don't doubt that Yahoo's REPLY function
works correctly, but it isn't working for me here since the MS Windows
Security updates this morning. This is true whether I use Windows XP SP1
or Windows 2000 Pro SP3.

Thanks,
David


Re: Test message....

Gerald Cahill <jock.cahill@...>
 

Using REPLY function


David J Taylor wrote:

... following failure to Reply to James' question.

David
Folks, it seems that (possibly following a security update this morning) I
can no longer use the Reply function in the Web interface to the Yahoo
groups. If anyone else has the same problem - e-mail me off list!

I'll delete the spurious messages now.....

David


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