Costa Blanca, 2E/2F, seasonal signal fluctuation.

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timo_w2s said:
although not sure why it would only happen just for a brief moment.
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All reports show signals strongest in this area that they have been. Bearing in mind Joddle has a 1.4 in Valencia, which is normally stronger than here, maybe the signal hit STB / LNB threshold for a brief time, which being later in the day when noise is lower could perhaps cause such a problem?
 
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Actuually I have a 2.4 here in Valencia - that has not changed in 10 years or so - and until the other night no channel apart from "Pick" has ever overloaded any of the receivers and for that I did use an attenuator - but none of the other regular channels needed it. When I do get overload, the whole thing just collapses - no SS reading and no SQ and the no signal message - but adding attenuation suddenly brings it back again. Since my last post I have had another wobble at 6:30 (local time) tonight - again on 101 Freesat - quickly checked other channels and all seemed OK - lasted no more than 2 minutes then all went back to nomal again and has been fine since. Starting to think the LNB (Invacom C120 quad) may be starting to fail - no doubt if this is the case things will get worse soon!!!
 
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joddle said:
Actuually I have a 2.4 here in Valencia
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Sorry, must have had the wrong glasses on when I wrote 1.4! The fact you have experienced "overload" before should tell you this is the most likely cause of the problem.

Two points.
One, if Pick ( includes Sky News etc ) has overloaded before, maybe an attenuator will stop the problem.
Two, still need advice from an expert in STB design to see if another txp can upset the box, while you are tuned to another weaker txp.
Three, I know I said two, but Timo´s LNB theory could also come into play.

Try an attenuator for a few days and see what happens. As I have stated, signal is the strongest it has been in this area since launch, unless you had no problems with 1N
 
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Just had another thought, 1N signals are totally irrelevant if 2A South is causing the problem.

Take one attenuator every 12 hours and hope all is ok next month!
 
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Will put try again with the attenuator back - if it is overload then its the first time on BBC1 ever - even 1N never overloaded anything on the regular channels - the SS is showing 80% and SQ at 100% tonight so thought it would be fine. And the old Pace 2600 never balked at anything - attenuator or no. Will keep watching.....
 
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joddle said:
Will put try again with the attenuator back - if it is overload then its the first time on BBC1 ever - even 1N never overloaded anything on the regular channels
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No, of course not. There wasn't a mix of weak and strong transponders at that time. Now there are super strong data transponders mixed with weak spot beam transponders.
 
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joddle said:
Will put try again with the attenuator back - if it is overload then its the first time on BBC1 ever - even 1N never overloaded anything on the regular channels - the SS is showing 80% and SQ at 100% tonight so thought it would be fine. And the old Pace 2600 never balked at anything - attenuator or no. Will keep watching.....
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If I´m correct, 1N, 2E, F or even G won´t come into the equation, it´s all down to current atmospherics and " break point " on the box / STB in question. PLEASE CAN A BOX SPECIALIST HELP!
 
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Tivu, I seem to remember you were going to be working with some manufacturers on sat/tv system integration. Do you have any tech spec on max input signal limits?
 
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Brian, had a job the other day. Freesat box wouldn't tune. All channels were working fine on the meter. Checked the Freesat transponder on the meter (11428H). Anyway, long story short on that frequency I was receiving Sky News Arabia which is on hi-band. So that signal was powerful enough to overwhelm the Freesat transponder. CHanged the LNB and all fine again. Anyway the point is, even though the LNB was faulty it only showed because the power from 2A south is so much stronger than the spot beam.
 
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BTW, I only realized these boxes needed the attenuator when Brian told me he actually had one working fine on an extra long cable run. Before that I'd never seen one that wasn't ropey on spot beam channels.

And BTW Joddle, Brian and I are seeing a much bigger difference in signal level in our areas between spot beam and 2A south than you would be in Javea. Up there you can get most transponders on a 90cm dish.
 
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Huevos said:
Brian, had a job the other day. Freesat box wouldn't tune. All channels were working fine on the meter. Checked the Freesat transponder on the meter (11428H). Anyway, long story short on that frequency I was receiving Sky News Arabia which is on hi-band. So that signal was powerful enough to overwhelm the Freesat transponder. CHanged the LNB and all fine again. Anyway the point is, even though the LNB was faulty it only showed because the power from 2A south is so much stronger than the spot beam.
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Backs up, in some small way, my theory about currently recorded problems.

But what do I know, I´m just a cable repair man!
 
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Brian Philpotts said:
Tivu, I seem to remember you were going to be working with some manufacturers on sat/tv system integration. Do you have any tech spec on max input signal limits?
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Not me, Brian.

I'm in Beach-Bum mode.



Except we haven't got a beach :blink:
 
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timo_w2s said:
You may be on to something, although not sure why it would only happen just for a brief moment. I think it was Finnish member @popolon who has had issues with the strong Astra 2A north beam transponders drowning out some lower UK spot beams on his huge dish in Finland with some of the RF from the higher band bleeding through to the lower band. I can't remember now if it was discussed here or on the Finnish forum but basically the IF of the LNB from the high band north beams matched the missing UK spot transponders in the lower band.
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Yes, this was discussed on Finnish forum. For example 12307H high band signal was/is giving interference to the low band 11464H on my 5 meter dish with invacom quad. And there was also 12460 H that was seen on 11610H (channels scanned, and confirmed that these were same as on 12460H channels). These high band signals were Astra 2A north beam channels that could be seen with small dishes in here Finland.
 
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Well today is very overscast with some heavy black clouds about so I will watch carefully to see what happens. At the moment everything appears normal - will report here if anything changes.
 
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Agg - today at 16:28 local time severe breakup again on BBC1 (South) - well actually when I investigated it was everything on 10818V so included BBC news in SD as well! Weather a little cloudy - but nothing compared with other days - and other channels seemed fine - the only problem was by the time I got to read the SQ and SS at 16:30 all was back to normal again wth healthy readings.....
 
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joddle said:
Agg - today at 16:28 local time severe breakup again on BBC1 (South) - well actually when I investigated it was everything on 10818V so included BBC news in SD as well! Weather a little cloudy - but nothing compared with other days - and other channels seemed fine - the only problem was by the time I got to read the SQ and SS at 16:30 all was back to normal again wth healthy readings.....
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Joddle, did you put the attenuator back in line? Normally on a big PF dish 10773 ( bbc 2 and bbc1 london etc ) records stronger readings than 10818, any problems there?
 
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Actually I forgot all about that - have just put it back with 10db so lets see if that makes any difference. Will report back soon! the SS is now showing 65% and sq 100% on bbc1 south.
 
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