Signal level down on 11023 H Astra 2G?

N

Nalleman

Member
My Satellite Setup
1,8 Channel Master, Black Pro LNB with CM feedhorn for 28 E which is my main interest when watching TV.

Using two VU+ DUO 4K SE, a VU+ DUO 2 and an Octagon SF8000.

Fixed dishes at: 42 E (0,75 m), 28,2/28,5 E (1,8 m), 19,2 E (1,5 m), 13 E (1,1 m), 9 E (0,7 m), 5 E (1,2 m) and 1 W (0,7 m).
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?
 
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.
 
Hi, stable and no changes here (south France).
11023 BBC4 11 db = the normal 3 dB below 10847 BBC1\2.
 
4wd said:
Hi, stable and no changes here (south France).
11023 BBC4 11 db = the normal 3 dB below 10847 BBC1\2.
Click to expand...

Might be something wrong with my equipment and most likely the LNB or a switch I'm using.
 
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
 
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).
 
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.
 
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).
 
so this depends on location right?
 
11038V affects much if LNB polarisation/skew is even slightly wrong
 
John Pykett said:
so this depends on location right?
Click to expand...

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
 
Nalleman said:
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.
Click to expand...

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
 
ocean04 said:
11038V affects much if LNB polarisation/skew is even slightly wrong
Click to expand...

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.
 
4wd said:
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).
Click to expand...

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.
 
skomedal said:
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
Click to expand...

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. :)
 
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 ) ?
 
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
 
Nalleman said:
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.
Click to expand...
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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