Welcome to Rob’s Satellite TV! › Forums › Satellite Forums › Astra 2E / 2F / 2G / Eutelsat 28A Forum – 28 degrees East › (last days) of October 2F Reception.
28/10/2013 at 7:04 pm #949
I don’t know what’s changed..??…..but 2F at a record 90% Q….yes 90%..!!!…..the highest ever for me….. at this time of night..8PM……28/10/2013 at 10:36 pm #958
Yes dont worry about the massive avatar if its hassle.
Should have that sorted tomorrow maybe.
Regards29/10/2013 at 5:15 am #960
And this morning it’s even higher …29/10/2013 at 7:50 am #961
Caz….is there any reason for this ?…or maybe the Africa beam..afects the sat position and therefore the spot beam?…signal is now back at November – February level.!!..if things stay like this ..A 125cm dish would be ok here….29/10/2013 at 7:58 am #963
an insane high level this morning…..C5 is 73% on my 110 with cloud. at 0845
What is happening?29/10/2013 at 7:58 am #964
Maybe the satellite has been moved back to its original orientation if support for French troops in Mali isn’t needed any more.
If the signal stays like this, then I’ll have a large margin for rain, etc…29/10/2013 at 8:54 am #965
Can confirm, Monty, 90% signal and 75% quality on both tuners. Loony!29/10/2013 at 9:18 am #966
Good reception here this morning,
2F 10964 C5 s/s 90% q 100%
2F 11023 BBC Red Button HD s/s 100% q 100%
2F 11126 C4HD s/s 90% q 90%
figures from the Humax box
I checked on the Satlink finder and these channels are up several percent across the board, typically s/s 83% q 68/69% and 22/23 db s/n
All this on an 80cm dish with an Inverto LNB, 90kms SW Toulouse.
We has some rain and thick cloud last night and quality was down to 60/70% ( on the Humax box) about10.30 pm, I haven’t seen ant pixelation/interference for about a week now. If it gets any better than this we’ll be frying chickens on it.29/10/2013 at 9:41 am #967
Yes I had 10db at around 8.30 this morning on my 1m, stock of 1.25s look like being redundant!! Also noted that Channel 5 and 4/7 were very close in terms signal. usually 4/7 0.5db. I also noted that BBC1 on 1N was about 0.5db higher.29/10/2013 at 9:42 am #968
just done some more Checking. The V signal is 73dBu with quality 65% , with the H Signal 69 dBu with 78% quality. I have checked the skew and this is the max i can acheive.29/10/2013 at 9:44 am #970
I think we should be wary of getting ‘too excited’. The signal could drop just as fast!!!29/10/2013 at 9:44 am #971
Mybe they are tweaking the Satellite for its West African Beam.29/10/2013 at 10:26 am #974
A comparison, all figures in dBu, note 1m has 20m cable and 1.2 only 5m cable
Channel !m 1.2m
Sky News 73.0 84.0
BBC1 76.0 83.5
Channel 5 68.0 81.0
Channel 4/7 63.0 72.029/10/2013 at 12:43 pm #976
i get 3% or 4% better quality readings on a 15 m run of cable than on a 1 m run of cable.!!!29/10/2013 at 1:25 pm #981
Phew! What an entrance to the forum. Glad it’s all sorted. 🙂29/10/2013 at 1:50 pm #982
Signal back to its more ‘normal’ (but High) level. C5 53% at 14.15 on the triax 110.29/10/2013 at 6:46 pm #995
It looks like CH5HD is not FTV with a sky card anymore …..!! …Thats a shame …..I was hoping that channel might join Freesat….Oh well…SD gadget show and Mentalist will do..:-)……Don’t forget everyone to change your program series links from HD to ch5 SD,,,if you don’t get ch5hd anymore…30/10/2013 at 5:47 am #999
2F – C5 Signal still ‘up’. H = 45% V = 30% at 0630.
i am suprised at this larger variation between H & V as they had been ‘together’ recently.30/10/2013 at 7:57 am #1001
now up to 75% H / 60% V at 0900. on my Triax 110.30/10/2013 at 8:14 am #1002
Same signals as yesterday, over 60% quality on both tuners at 8 Am this morning, now it’s 9 AM and it’s over 70%. This is interesting, because such an increase in reception levels can in no way be due to seasonal or atmospheric variations, so they must be “fiddling” with it. I’ll Have another look at midday, when I expect it will be even higher with the sun pushing from behind. Monty, I’m not surprised that you get a better result with 15M of cable than with 1M. I too have found this bizarre “tuning” effect, but only with older type co-axial cables. I have found that a length of 7 metres of this old cable “tunes” to to the intermediate frequency of the 10964 transponder and seems to have some kind of resonating or boosting effect. However, other frequencies significantly higher or lower are lost completely.30/10/2013 at 9:21 am #1003
ok, a quick off topic question:
Previously someone (I think Caz or maybe Steve but may be wrong) tried telling me that its the QUALITY of the signal (according to the signal meters) that is important and not the STRENGTH.
Now, I always have a 90% quality for the 2F signals (without question) and my strength is always now showing about 60%. And yet, despite this 90% I still get the breakup (when the conditions are right – bad cloud etc). If this advice that QUALITY is important was right then being at 90% I would never breakup, surely.
My throry was that its strength primarily thats important. As signals are in dB, and thinking about sound/noise (also in dB) generally, there would be no point have a pure quality of sound if the volume (strength) was turned down to the point it cant be heard (sat boxes would then get the ‘lock’). I understand that similarly, there’s no point on having a loud broadcast of sound that is just a noisy mess (high strength, bad quality). I would think this would lead to permanent pixelation due to the signal being there but its all garbled up.
So, I thought that they are both equally important contrary tothe advice that the strength is not important and that quality is everything. With my logic thoughts and experience, I would think its not exactly right.
So, to the floor….. what do you believe is more important and how do you justify it?30/10/2013 at 10:20 am #1005
I am not sure where you are located, but on my dish (1.25M) I am I guess close to the edge.
Based on my system, signal quality is I guess the most important of the two, providing the signal strength is reasonable (?).
AT the moment, I get between 7dB and 16dB (approx) on 2F, with those channels on the UK beam between 7 -> 10.
Depending on whether its SD or HD, I lose the signal at about 7dB.
So, to throw another parameter into the question, for me the most important action has been getting the dish aligned spot on to the 2F beam, so whatever the signal strength, I have the best signal quality from that transponder and if possible above 7dB.30/10/2013 at 10:49 am #1010
Jim, the way I see it is that quality is more important.
This is my understanding, although it’s been years since I’ve done any studying of this area, so I might need to be corrected:
The signal quality = transponder carrier level (also known as signal strength) / noise level expressed in dB or percent.
Therefore, as the transponder carrier level decreases relative to the background noise level, so does the quality.
The typical figure of 7dB has been expressed as the point the picture breaks up, which seems to equate to 30% quality on my Sky box.
I can’t explain why you see the level drop but the quality remain fixed – it must be something to so with your Sky box. So you know if you have the latest software update?
I hope I have for that right and am not adding to confusion…30/10/2013 at 11:01 am #1014
No “Jim’….it wasn’t me telling you that..!…….first of all Sky boxes are have useless signal & strength Quality meters… …..I think “Caz” was saying signal Quallity is just more important than strength ……as I have 8 boxes to chech signal strength & quality on …..I found the box closest to the dish has the best Strength and Quality…..but other boxes further away from the have the same Quality readings …but lower strength reading…..but still work fine..
As for your pic break up problem…some Sky SD…boxes don’t have a very sentitive tuners ….Amstrad SkyHd & Humax freesat have very good tuners….some of the worst boxs I tested was old sky Pace & a freeveiw Panasonic box….but I think we have spoke about this before…?
Ps I forgot to mention ..on some boxes is possible to have too much signal strength strength….that’s when a attenuator ..is needed..30/10/2013 at 12:54 pm #1016
Contrary to my expectations, signal strength and quality at midday remain the same as at 9am, will check again this evening. It’s true that modern Sky boxes don’t have very sensitive tuners. I was told this was done deliberately some years ago expressly so they wouldn’t work in countries far from the UK and it’s also true that their signal strength and quality meters don’t reflect the truth. Humax boxes do amuch better job, having more sensitive tuners, although even there, the signal measuring application lacks resolution as it only measures in 10db steps but it’s a useful guide.
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