Signal level down on 11023 H Astra 2G?

N

Nalleman

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97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
At my place in southern parts of Sweden the level on 11023 H (Astra 2G) has dropped significantly.
I don't know if there is a problem with my equipment or if the signal level really has gone down?
 
N

Nalleman

Member
Messages
97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
But the thing is it hasn't been like this before. I have been able to get this TP without problems since Astra 2G went in service and before that when it was on 2F. Not a big problem since I don't watch any channels on this TP. Just wondering why the level has gone down the last month.
 
4wd

4wd

Getting the picture
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5 W, 9-13-19-28 E
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Bergen, Norway \ Alpes Maritimes, France
Hi, stable and no changes here (south France).
11023 BBC4 11 db = the normal 3 dB below 10847 BBC1\2.
 
N

Nalleman

Member
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97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
Hi, stable and no changes here (south France).
11023 BBC4 11 db = the normal 3 dB below 10847 BBC1\2.
Might be something wrong with my equipment and most likely the LNB or a switch I'm using.
 
C

Coviello

Regular Member
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Location
Potenza (Italy)
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Prodelin 11ft (335 cm)
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Southern Italy
The same happened to me (Italy; Basilicata, Potenza). The level of 11023 H (Astra 2G) dropped significantly since tp 111038 V on Astra 2G (European beam) was activated . The latter tp is very strong and kills the weak signal coming from the near tp 11023 H on Astra 2G (UK beam). Currently I receive 10964H, 10996H and 11126V from Astra2G (UK beam).
Coviello
 
4wd

4wd

Getting the picture
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5 W, 9-13-19-28 E
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Maybe only the very edges of beam affected? Here (s. france) on 125 (socalled 140) dish, still no sign of change.
At time of writing, 11023 bbc4 12 dB, the normal 3 dB less than bbc1\2 15 dB
10964 13.5, 10994 12.8, 11126 12

vu solo2, ref: 17dB = 100% Q, 15dB 93% Q, 12dB 75% Q.
Cutout at 4 to 7 dB (differs according to SD\HD\FEC).
 
N

Nalleman

Member
Messages
97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
Thanks everyone for your answers! I think the reason is the use of 11038 V TP as Coviello says! I also affects 11053 H which has always been pretty weak here and now has gone completely.
 
4wd

4wd

Getting the picture
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1,506
My Satellite Setup
5 W, 9-13-19-28 E
My Location
Bergen, Norway \ Alpes Maritimes, France
11053 11.8 dB here, normal.
Out of curiosity, getting 12382 H ? That's the weakest here at 10 dB 60% Q (still good margin).
 
John Pykett

John Pykett

Persona non grata
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580
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Dish setup: 80cm Motorized Dish, TM-5402 HD M3. This setup goes from 1w to 28.2e

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so this depends on location right?
 
ocean04

ocean04

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11038V affects much if LNB polarisation/skew is even slightly wrong
 
Analoguesat

Analoguesat

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Scottish Borders
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so this depends on location right?
Yes - nothing to fret about in the UK. Odd things happen in extreme fringe reception - we are a technical forum so extreme fringe reception of various satellites is a common topic of discussion
 
skomedal

skomedal

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This and that
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thule
Thanks everyone for your answers! I think the reason is the use of 11038 V TP as Coviello says! I also affects 11053 H which has always been pretty weak here and now has gone completely.
What size dish are you trying for this Tp?

See your sig. has listed a Cm 1.8, if using this try nugding a bit if motorised.

You also list numerous other sats on fixed dishes including 28,2/28,5 E, what size fixed dish would also help too.

Regards

Your sig :-
My Satellite Setup:
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 42 E, 28,2/28,5 E, 19,2 E, 16 E, 13 E, 9 E, 1 W, 5 W and 15 W
 
N

Nalleman

Member
Messages
97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
11038V affects much if LNB polarisation/skew is even slightly wrong
Yes the skew adjustment is very very sensitive on 2G. Remember having problems getting 11126 V before adjusting the skew. Now it´s no problem. Might be a bit more adjustment would bring the level up on 11023 H and 11053 H back again.
 
N

Nalleman

Member
Messages
97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
11053 11.8 dB here, normal.
Out of curiosity, getting 12382 H ? That's the weakest here at 10 dB 60% Q (still good margin).
12382 H is on 2F and uses FEC 5/6 so it´s a hard catch but I can get it but not 24/7.
 
N

Nalleman

Member
Messages
97
Location
Motala Sweden
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 28,2/28,5 E, 19,2 E, 13 E, 9 E and 1 W
My Location
Sweden
What size dish are you trying for this Tp?

See your sig. has listed a Cm 1.8, if using this try nugding a bit if motorised.

You also list numerous other sats on fixed dishes including 28,2/28,5 E, what size fixed dish would also help too.

Regards

Your sig :-
My Satellite Setup:
1,8 Channel Master, Black Pro LNB with CM feedhorn and VU+ DUO 2 and Vantage 8000 TS receivers. Fixed dishes at: 42 E, 28,2/28,5 E, 19,2 E, 16 E, 13 E, 9 E, 1 W, 5 W and 15 W
I use a fixed CM 1,8 M for 2E/2F/2G. 2E is at 28,5 and the other two at 28,2. To get all three of them I have adjusted the dish at about 28,3 degrees. Since 2E is the strongest this is not a problem but it affcects the weaker 2F and G. If the dish was pointed at 28,2 I would probably get 11023 and 11053 without a problem. However 2E hosts the most interesting channels.
All my dishes are fixed and I have added one poiting at 5 E. :)
 
Channel Hopper

Channel Hopper

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A little less analogue, and a lot more crap.
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It might be that the three satellites grouped together are swamping your tuner with too much signal.

Do you have access to an attenuator (or a long run of spare cable on a reel ) ?
 
C

Coviello

Regular Member
Messages
82
Location
Potenza (Italy)
My Satellite Setup
Prodelin 11ft (335 cm)
Windows 2000 XP
My Location
Southern Italy
I receive all UK beam channels form Astra2E. However, reception from Astra2G (UK beam) is only possibile on 10964H, 10996H and 11126V USING an (variable) attenuator.
Coviello
 
S

s-band

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SE UK
Yes the skew adjustment is very very sensitive on 2G. Remember having problems getting 11126 V before adjusting the skew. Now it´s no problem. Might be a bit more adjustment would bring the level up on 11023 H and 11053 H back again.
If you are using an LNB with 2 probes, you may find that the best skew positions for H & V are slightly different. The 2 probes can be slightly away from truly orthogonal. It's probably the cross polar rejection that is critical in this case. There's also a possibility that the skew is slightly different between the satellites.
 
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