Date   

Re: changes on SR1 to receive HVS1 and BASIC at the same time ... if possible, of course!

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

From: Mario Brustia

mmmm...sorry...in the eumetsat guide I read about enabling configuration setting 2 for the receiver 1.
I entered them in the current configuration together with the bas pids. Is it wrong?
mmmm....
===================================

Mario,

Why not use the EUMETSAT scripts for setting the receiver configuration? USB required, and then edit the network addresses to suit your system?

Ciao,
David
--
SatSignal Software - Quality software for you
Web: http://www.satsignal.eu
Email: david-taylor@...
Twitter: @gm8arv


Re: reception

Robert Moore
 

Thorsten, how stupid of me not to think of that. Rebooting the Novra receiver did the trick! Thanks.

Robert

 

From: MSG-1@groups.io <MSG-1@groups.io> On Behalf Of Thorsten Miglus
Sent: 08 August 2019 13:46
To: MSG-1@groups.io
Subject: Re: [MSG-1] reception

 

Hi Robert,

you can try to reboot the Novra receiver.

Cheers,
Thorsten

On Thu, Aug 8, 2019 at 01:34 PM, Robert Moore wrote:

Have just discovered that all reception stopped here at about 1445 yesterday.
Tellicast shells show no throughput on either bas or hrv-1. The Novra console shows -35 dBm with carrier to noise ratio around 11dB.
Signal, status, data, LNB all green. Data LED flashing on the box.
All reception folders empty.
This situation has survived a reboot of the PC.

Stumped!

Robert


Re: HVS-2 losses

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Firstly all thanks to ops help desk who speedily despatched a new EKU
(The new squat blue LED version). It has been running now for a week.
Fortunately I had already installed the very latest software suite.

The only issue I have seems to be with the hvs-2 files - which I have
read, some no longer bother with due to alternative access. (All other
file segments seem to show no losses except for an exceptional weather
event.)

There are intermittent missing segments - sometimes I will get eight or
nine good ones, followed by a missing one, other times perhaps a third
of a pass can be missed. I think they are related to a log error message
such as:

MSG:2019-08-08 07:19:11.180:File transmission b0f8852f000bab48 ended: 1
file missing/incomplete
MSG:2019-08-08 07:19:11.180:Missed parts of file
`S3A_OL_1_EFR____20190808T051523_20190808T051823_20190808T070254_0179_048_019_3600_MAR_O_NR_002.SEN3.tar'
id 5d4bca44000bab45 from channel `E2H-S3A-01'

I am assuming the problem is at this receiving station. They come via
the TBS card which shows quality around 80% at this time of the day with
a SNR of around 11. Just wondering if that is the cause? The computer is
an i7-8700 3.2gHz with 16Gb of RAM. CPU rarely rises above 10% and disk
around 8%.

Any thoughts would be appreciated,
James
====================================

James,

A few odd recollections:

- I note that I have Tuner 0 for the BS, and Tuner 1 for the HVS. This /may/ matter. This with the "single input" fix from CrazyCat. Using BDADataEx, Device 2 is Tuner 0, and Device 1 is Tuner 1, but I don't think that matters.

- At one stage, TBS were supplying a driver (1.0.0.6) with different buffer sizes for the two tuners. Using this driver gave me a steady stream of missed & recovered TelliCast packets (like those seen on Arne's plots, when his MRTG/FTP is working!). I tried the earlier 1.0.0.5 driver and the missed/recovered packet rate dropped to zero.

- Getting error reception of HVS-2 isn't easy, and both Arne and I have ended up with a big RAMdisk (10 GB in my case) which has both /temp/ and /received/ with the files being moved off (or in my case deleted) as soon as possible. You'll know that others have reported using an SSD for the systems, and separate HDs for each service. Maybe BS+HVS-1 can be on one HD, and HVS-2 on a second HD.

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


Re: changes on SR1 to receive HVS1 and BASIC at the same time ... if possible, of course!

Mario Brustia
 

mmmm...sorry...in the eumetsat guide I read about enabling configuration setting 2 for the receiver 1.
I entered them in the current configuration together with the bas pids. Is it wrong?
mmmm....


Re: changes on SR1 to receive HVS1 and BASIC at the same time ... if possible, of course!

Mario Brustia
 

Ciao David...
Yes PID 600 and 601 are anabled...I'll do a more deep investigation (may be a wrong configuration ?)
may be.... the usual problem: worng interpretation of an english tech documentation!  .
For the moment ...thank's again.
Mario


Re: changes on SR1 to receive HVS1 and BASIC at the same time ... if possible, of course!

David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

Hi David ... a doubt:
I changed the code like from your site (H41000).Bas service is ok (withe icon) ,Hvs1 is in connect status (Yellow icon but license tab ok).
Question: HVS1 is sent by eumetsat by default or is it necessary to enable some options in the EO portal?
I know I will have mistakes in data because I have a small dish, but I only need it for experimentation, to undestand the cast system.
excuse the stupid question

mario
====================================

Mario,

Not a stupid question! If you look at the EUMETSAT guide section 4.5.2.1:

http://www.eumetsat.int/website/wcm/idc/idcplg?IdcService=GET_FILE&dDocName=PDF_DMT_730927&RevisionSelectionMethod=LatestReleased&Rendition=Web

they show a list of PIDs for both services:

RX Transport Filter Table
=========================
Slot. PID Ethernet Address Status IP Multicast
1. 100 CC-F6-7A-04-CA-B8 Enabled Pass
2. 300 CC-F6-7A-04-CA-B8 Enabled Pass
3. 301 CC-F6-7A-04-CA-B8 Enabled Pass
4. 500 CC-F6-7A-04-CA-B8 Enabled Pass
5. 509 CC-F6-7A-04-CA-B8 Enabled Pass
6. 511 CC-F6-7A-04-CA-B8 Enabled Pass
7. 600 CC-F6-7A-04-CA-B8 Enabled Pass
8. 601 CC-F6-7A-04-CA-B8 Enabled Pass

Do you have 600 and 601 enabled?

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


Re: reception

Thorsten Miglus
 

Hi Robert,

you can try to reboot the Novra receiver.

Cheers,
Thorsten


On Thu, Aug 8, 2019 at 01:34 PM, Robert Moore wrote:
Have just discovered that all reception stopped here at about 1445 yesterday.
Tellicast shells show no throughput on either bas or hrv-1. The Novra console shows -35 dBm with carrier to noise ratio around 11dB.
Signal, status, data, LNB all green. Data LED flashing on the box.
All reception folders empty.
This situation has survived a reboot of the PC.

Stumped!

Robert


Re: HVS-2 losses

James Brown
 

That’s interesting. 
Thank you. 

On 8 Aug 2019, at 12:58, seggins2000 via Groups.Io <seggins@...> wrote:

I have a similar problem here James. Nothing changed at this end. Hardly missed anything up to about a month or so ago. 
Regards John 

My POT-LX1. On O2.


-------- Original Message --------
Subject: [MSG-1] HVS-2 losses
From: James Brown <satellite@...>
To: MSG-1@groups.io
CC:

Firstly all thanks to ops help desk who speedily despatched a new EKU
(The new squat blue LED version). It has been running now for a week.
Fortunately I had already installed the very latest software suite.

The only issue I have seems to be with the hvs-2 files - which I have
read, some no longer bother with due to alternative access. (All other
file segments seem to show no losses except for an exceptional weather
event.)

There are intermittent missing segments - sometimes I will get eight or
nine good ones, followed by a missing one, other times perhaps a third
of a pass can be missed. I think they are related to a log error message
such as:

MSG:2019-08-08 07:19:11.180:File transmission b0f8852f000bab48 ended: 1
file missing/incomplete
MSG:2019-08-08 07:19:11.180:Missed parts of file
`S3A_OL_1_EFR____20190808T051523_20190808T051823_20190808T070254_0179_048_019_3600_MAR_O_NR_002.SEN3.tar'
id 5d4bca44000bab45 from channel `E2H-S3A-01'

I am assuming the problem is at this receiving station. They come via
the TBS card which shows quality around 80% at this time of the day with
a SNR of around 11. Just wondering if that is the cause? The computer is
an i7-8700 3.2gHz with 16Gb of RAM. CPU rarely rises above 10% and disk
around 8%.

Any thoughts would be appreciated,
James






Re: HVS-2 losses

seggins2000
 

I have a similar problem here James. Nothing changed at this end. Hardly missed anything up to about a month or so ago. 
Regards John 

My POT-LX1. On O2.


-------- Original Message --------
Subject: [MSG-1] HVS-2 losses
From: James Brown <satellite@...>
To: MSG-1@groups.io
CC:

Firstly all thanks to ops help desk who speedily despatched a new EKU
(The new squat blue LED version). It has been running now for a week.
Fortunately I had already installed the very latest software suite.

The only issue I have seems to be with the hvs-2 files - which I have
read, some no longer bother with due to alternative access. (All other
file segments seem to show no losses except for an exceptional weather
event.)

There are intermittent missing segments - sometimes I will get eight or
nine good ones, followed by a missing one, other times perhaps a third
of a pass can be missed. I think they are related to a log error message
such as:

MSG:2019-08-08 07:19:11.180:File transmission b0f8852f000bab48 ended: 1
file missing/incomplete
MSG:2019-08-08 07:19:11.180:Missed parts of file
`S3A_OL_1_EFR____20190808T051523_20190808T051823_20190808T070254_0179_048_019_3600_MAR_O_NR_002.SEN3.tar'
id 5d4bca44000bab45 from channel `E2H-S3A-01'

I am assuming the problem is at this receiving station. They come via
the TBS card which shows quality around 80% at this time of the day with
a SNR of around 11. Just wondering if that is the cause? The computer is
an i7-8700 3.2gHz with 16Gb of RAM. CPU rarely rises above 10% and disk
around 8%.

Any thoughts would be appreciated,
James






reception

Robert Moore
 

Have just discovered that all reception stopped here at about 1445 yesterday.
Tellicast shells show no throughput on either bas or hrv-1. The Novra console shows -35 dBm with carrier to noise ratio around 11dB.
Signal, status, data, LNB all green. Data LED flashing on the box.
All reception folders empty.
This situation has survived a reboot of the PC.

Stumped!

Robert


HVS-2 losses

James Brown
 

Firstly all thanks to ops help desk who speedily despatched a new EKU (The new squat blue LED version). It has been running now for a week. Fortunately I had already installed the very latest software suite.

The only issue I have seems to be with the hvs-2 files - which I have read, some no longer bother with due to alternative access. (All other file segments seem to show no losses except for an exceptional weather event.)

There are intermittent missing segments - sometimes I will get eight or nine good ones, followed by a missing one, other times perhaps a third of a pass can be missed. I think they are related to a log error message such as:

MSG:2019-08-08 07:19:11.180:File transmission b0f8852f000bab48 ended: 1 file missing/incomplete
MSG:2019-08-08 07:19:11.180:Missed parts of file `S3A_OL_1_EFR____20190808T051523_20190808T051823_20190808T070254_0179_048_019_3600_MAR_O_NR_002.SEN3.tar' id 5d4bca44000bab45 from channel `E2H-S3A-01'

I am assuming the problem is at this receiving station. They come via the TBS card which shows quality around 80% at this time of the day with a SNR of around 11. Just wondering if that is the cause? The computer is an i7-8700 3.2gHz with 16Gb of RAM. CPU rarely rises above 10% and disk around 8%.

Any thoughts would be appreciated,
James


Re: changes on SR1 to receive HVS1 and BASIC at the same time ... if possible, of course!

Mario Brustia
 

Hi David ... a doubt:
I changed the code like from your site (H41000).Bas service is ok (withe icon) ,Hvs1 is in connect status (Yellow icon but license tab ok).

Question: HVS1 is sent by eumetsat by default or is it necessary to enable some options in the EO portal?

I know I will have mistakes in data because I have a small dish, but I only need it for experimentation, to undestand the  cast system.
excuse the stupid question

mario


Re: Problem : Could not join channel...etc etc >>> solved

Mario Brustia
 

The problem was due to hardware key.WIth the new key all works fine! Thank's to eumetsat staff for support!

mario


Metop A

Ian Deans
 

A message from Eumetsat has confirmed that they have been able to restore SEM and GRAS for Metop A, but I also see that we are now receiving some restricted EARS AVHRR. Good to see some progress with this 13 year old satellite.

Regards
Ian.


Metop A

Ian Deans
 

Another two ascat EARS files sent next orbit from Metop A.

Loading in David's buffer viewer my guess is that have probably been sent from the Athens and Muscat EARS stations. Metop A not quite dead in the water yet !!!

Regards
Ian.


Metop A

Ian Deans
 

Metop A looks likely to be unavailable for an extended period, and Eumetsat are still showing all data as red.

Yet at approx. 18.29 UK time two ascat EARS files from Metop A are sent through EPS Africa ( basic ) ----- strange !!!

Regards
Ian


Re: weather impact

geojohnt@...
 

Ian,

Thanks for your comments on your shield.

>Looking at your picture John, I would not be surprised if your signal
>was a little down as a result of your cover.

Yes, I wondered if anyone might notice/suggest that.

I just plonked it on a couple of weeks ago when after all the dry, hot, weather down here turned into heavy rain.
Actually, the plastic itself attenuates very little.
However, if the LNB is looking through part of the top of the shield covered in rain drops, then attenuation will occur.

I need to get out there as soon as the rain stops (with no drops on the LNB) and remove the shield to prove it.

Mmmm, I could also put a layer of ali foil over the top in dry weather and adjust the shield for no blocking.

Regards,
John

 ++++++++++++++++++++++


In a message dated 03/08/2019 16:34:53 GMT Standard Time, iandeans142@... writes:

John I bought a rain shield as I too found heavy droplets seriously
attenuating the signal.

Mine is only semi-circular, but I found if I set it up per the
instructions supplied I was losing up to 0.2/0.4 SNR. As a result the
top bit is not parallel to the LNB but pointing a bit higher which has
resulted in no signal loss. The LNB is slightly more exposed, but it is
still very rare for me to get water on the LNB.

Looking at your picture John, I would not be surprised if your signal
was a little down as a result of your cover.


Re: may be of interest

geojohnt@...
 

Robert,

This takes me back many years - way back to the days of RIG and the then UK Radio Communications Agency who allowed wide area paging transmissions in, and adjacent to, the 137 - 138 MHz weather satellite band leading to the serious interference we amateurs were experiencing.

They tested all our then receivers and many meetings later - we got nowhere.
Commercial 'money talks.'

However, the RA then gave me a seat on the UK SG7 Science Services Committee to represent amateur users of the 'weather satellite bands.'
I was still attending meetings as a member well into GEO.
This committee dealt with all UK applications for spectrum access to spectrum assigned to scientific services - weather and earth observation satellite and radio astronomy, etc and adjacent to it.
These were mostly commercial companies in the mobile communications industry.
And it liaised with worldwide 'communications agencies' to harmonise 'Earth-space, space-Earth spectrum allocations.
These were then all sorted out at the WMO in Geneva.

And of course, the RA - and now Ofcom - sold off chunks of spectrum for commercial purposes.
There were frequent 'demands' for spectrum adjacent to the then user dissemination channels of Meteosat.

Fortunately for us MSG-1 shortly after launch, and during commissioning, blew its power amps and was not able to disseminate data to users in the usual way.
Hence experimenting in using the then ATOVS service which was being transmitted from a commercial TV satellite (Hotbird?) in DVB-S-1 to disseminate EUMETSAT's and global geostationary meteorological data to users.

The rest, of course, is history.
'We are safe' but obviously there is still a growing need for spectrum access - and very little free space - leading to adjacent and/or frequency sharing.

Actually, new Inverto LNB's now have a built in 4G filter.
I'n not sure how 4G might effect our signal.
Perhaps there is an expert out there who might know about this?

Regards,
John.

   


In a message dated 29/07/2019 10:14:34 GMT Standard Time, rsmoore@... writes:

From: Meteorological Technology World Expo 2019 <meteorological.expo.2019@...>

American meteorologists have written to the US Federal Communications Commission to raise concerns over potential disruptions caused by sharing a particular bandwidth with 5G telecommunication companies.

The American Geophysical Union, American Meteorological Society, and the National Weather Association, have all raised concerns over sharing the 1675-1680MHz band with terrestrial communications because of the likelihood of interference with weather satellite imagery and relayed environmental data to receive-only antennas.

According to the letter, NOAA’s GOES-R satellites have several space-to-earth transmissions in, or adjacent to, the 1675-1680MHz band, most notably, the Data Collection Platform Relay and GOES-R Rebroadcast.

The letter states, “The prospect of rule-making in this band without a fully informed record is deeply concerning because the non-federal weather services resulting from real-time data transmitted in, and adjacent to, the 1675-1680MHz band are crucially important for public safety and scientific research. The proceeding RM-11681 is complete with responses from a substantial number of stakeholders across the weather, water and climate enterprise and weather-sensitive industries that provide a compelling basis to not proceed with a sharing arrangement.”

The letter asks for a ruling on the sale of the bandwidth to be suspended or delayed until further research has been submitted by NOAA.


Re: weather impact

Ian Deans
 

On 03/08/2019 16:19, geojohnt via Groups.Io wrote:
Robert,
Yes, it's been pretty bad 'up there' and more to come, it looks like.
However, apart from rain-fade on satellite signals, water drops on the LNB face is also a problem to take into consideration.
My 1 m dish is on the patio, so very easy to get to.
And it's quite sheltered where rain drops are not blown away from the face of the LNB.
I found some years ago that if I wiped away the large drops of rain on the face of the LNB my SNR increased by up to 1.5 dB if there were a lot of large drops.
Answer, for my 'ground' position, a rain shield made simply out of a 2 L plastic lemonade bottle.
Works very well.
Regards,
John.
==========================================================================

John I bought a rain shield as I too found heavy droplets seriously attenuating the signal.

Mine is only semi-circular, but I found if I set it up per the instructions supplied I was losing up to 0.2/0.4 SNR. As a result the top bit is not parallel to the LNB but pointing a bit higher which has resulted in no signal loss. The LNB is slightly more exposed, but it is still very rare for me to get water on the LNB.

Looking at your picture John, I would not be surprised if your signal was a little down as a result of your cover.

Regards
Ian.


Re: weather impact

geojohnt@...
 

Robert,

Yes, it's been pretty bad 'up there' and more to come, it looks like.

However, apart from rain-fade on satellite signals, water drops on the LNB face is also a problem to take into consideration.
My 1 m dish is on the patio, so very easy to get to.
And it's quite sheltered where rain drops are not blown away from the face of the LNB.

I found some years ago that if I wiped away the large drops of rain on the face of the LNB my SNR increased by up to 1.5 dB if there were a lot of large drops.

Answer, for my 'ground' position, a rain shield made simply out of a 2 L plastic lemonade bottle.
Works very well.

Regards,
John.

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


In a message dated 28/07/2019 17:50:50 GMT Standard Time, rsmoore@... writes:

I don't know if others are having the same experience, but there has been almost continuous heavy rain in North Wales today and all my HVS-1 imagery is very broken. BAS is fine. Suspect my reception for HVS is marginal and rain just attenuates the signal further without completely killing it.