> > Can you describe the problem that you face ? other than low SNR ? ie > > have you checked whether your cables are okay, Dish is aligned proper > > etc etc ? It will help to avoid a lot of frustration later. :) > > > > > > Manu > > > > That's great! > > The problems I face: I have a lot of BER, measured with femon -h (with > my patch applied for decimal readings). The sky is clear. Visiosat Bisat > G3C dish. > > On ZDF on Astra 19,2 east (Astra 1), I see nothing (and I mean > _nothing_) but green and purple blocks and loud aliens in my speakers > constantly. BER is into 65000. > > On Omroep Brabant on Astra 1D at 23,5 east, I see some bits from the > image but constantly lots of complete stripes with corrupted MPEG, and > the audio is also bad. So this stream is also corrupt. BER into 65000. > > Now ZDF is one of the weakest transponders on 19,2 east and Astra 1D is > old so doesn't perform optimal either. But this is not normal. > > On BBC One/Two/Three/Four on Astra 2D, and that beam is strong in my > location, the picture is good most of the time, but once approx every > minute a small visible corruption passes by. Just as long as it does > _not_ start to rain, I can follow the program. BER into 65000. I understood your problem. > On the Dutch channels on Astra 1 at 19,2 east again, like Nederland 1 at > 12515.25 H (Astra 1G) or RTL 5 at 12343.50 H (Astra 1H) the picture is > perfect, and BER hoovers and shows 0, 256 or 512 (which is low). > > There are also values in between. n-tv on Astra 1 at 19,2 east shows > around 17000-18000. Perfect picture. > > But.. When it starts to rain, the whole party is over. During rain, don't expect anything much with DVB-S > So that's my problem. When I swap the KNC1 for my Technotrend S-1500, > all the channels work, including ZDF, perfectly, and the BER is zero > everywhere, even ZDF works with zero BER. There are many other channels > that do not work but I couldn't possibly list them all, I don't think > that would make sense anyway. And sure, there could be a little > difference in tuner quality and stuff in favor of the Technotrend, but I > really don't believe it would be that big for cards from the same price > range. And it's not like Philips is a bad or cheap brand either. Though i am not saying it is bad, devices designed improperly leads to bad results. However good the components are. We have examples, but not stating that is the case here, but a possibility. > I'm actually not sure the SNR number in femon is low, I was really > talking about Signal to Noise ratio - with all that corruption and > horrible performance it has to be bad. > > On Windows, I can watch ZDF with the KNC1, but I see some "error" level > in the Windows software, that "error" most likely means BER. But it's > not much. Last time I checked anyway, it's been a while since I've seen > Windows. If this is an overall problem that you see, then it has nothing to do with the drivers. I thought in your case, the driver was misbehaving The TT card you have behaves similarly ? > The problem seems to be getting worse, because some days/weeks ago I > believe I had zero BER at the Dutch channels, and now it's around > 256-512. But the weather, temperature and other stuff also varies, so > it's always hard to say. Maybe it has something to do with your dish alignment, LNB alignment etc ? A LNB skew can cause a lot of errors to happen, eventhough the dish is aligned correctly. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
