On Sat, 3 Jan 2009, Roman Jarosz wrote: > > I think that's the main issue. *BOUWSMA w*rote that its ok to rely on > > astra's maintainers and connect to any transponder is enough to get a > > list > > of all others. I personaly don't trust those maintainers since I saw too > > many errors in NIT messages that specify the transponder, so I specify > > all > > the frequencies I want to scan. I don't have a dish to 19.2, but there Another reason why one might want to list all the frequencies particularly for 19E2 is that presently quite a few transponders are still analogue, but within a year or so will become digital. Often a digital transponder is fired up but not added to the NIT tables until officially going into service. The frequencies used at 19E2 are well known, as are the related parameters -- present analogue channels will use the same frequencies with steps 14750kHz, SR22000, and 5/6, as the existing ex-analogue channels -- unless they get put into DVB-S2 service. There have been a small number of temporary variants, though: 12728 was SR 19890 for a short while... I have seen one or two mistakes added to the NIT tables at this position; somehow a 11475+27500 alleged transponder was added, and I also have seen an Intermediate Frequency added in one or two cases, which is clearly human error. > Could you tell me how? I've tried with S 12188000 H 27500000 3/4 and > it doesn't find anything. > The console outputs are here: > http://kedge.wz.cz/dvb/scan.txt For some reason, your card is unable to lock onto that transponder, at least from `scan' -- seen by the tuning status values never going above 0x1 or 0x3, which is usually the case when no transponder is present, or the parameters given are incorrect. But then you said early that you could manually zap to this frequency and see RTL... In fact, as I look at the result of your scan, you are only able to tune in very few of the transponders which you should receive -- perhaps less than a third. Oh, your bogus IF is still present toward the end of the scan: >>> tune to: 1574:h:S19.2E:22000: DVB-S IF freq is 8175750 Obviously 1,574GHz is not a Ku-band transponder, but rather the IF of the local oscillator at 9,75GHz, for a frequency of 11,324GHz, or at 10,6GHz for 12,174GHz which is in the band where SR27500 is used -- though I vaguely recall there also being a frequency provided well above 12750... I see no regular pattern in transponders that fail to tune. `scan -v' will show how many attempts it takes to tune those transponders with success; I believe the `-5' option does not lengthen the time permitted for a lock to be obtained, but it wouldn't hurt to try it, I think (it normally is used where the data sent does not cycle around in a short time as it should). In general, I expect my tuners to lock onto a good signal such as Astra in one, and no more than two tuning status lines. But I've seen other scan results where lock is not obtained so quickly... barry bouwsma needs sleep badly _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
