Markus Rechberger wrote: > On 5/29/07, Michael Krufky <mkrufky@xxxxxxxxxxx> wrote: >> Markus Rechberger wrote: >> > I'm adding Michael, maybe he has some ideas about it. >> >> The reason why i asked, is that their other HVR product, the HVR-1600 >> >> (different chipset I think), also said "QAM currently not supported", >> >> but then they released a beta driver that does. So I am wondering if >> >> they are able to update something in the microcode/firmware that will >> >> give it this capability. >> > >> > The other thing is that the 'dmesg' output seems to indicate that the >> > tuner and "frontend" chip has this capability (please correct me if I >> > am wrong): >> Markus & Matthew, >> >> (cc added to linux-dvb, in case somebody else has the same question.) >> >> I am missing the original part of the email containing the question, but >> I can only assume that the question is, "Can the HVR950 be used to pick >> up QAM?" >> > > the discussion is only about that. > >> The answer is, no. Unfortunately, the Xceive XC3028 silicon tuner is >> unable to receive QAM256 digital streams. > > QAM64 is also used by some cableproviders (eg. in Germany), so seems > like it should be possible to get a part of it supported, though we > still lack the firmware for this mode. Also the xceive Product spec > says "Supports all digital TV standards: > ATSC, DVB-T, ISDB-T, DMB-T, DVB-C" The Xceive XC3028 supports ATSC, yes... but it does not support QAM256. QAM256 is used by most cable television providers within the US. It is true, however, that some rare cable providers use QAM64. Given the correct firmware, the xc3028 should be able to receive those streams and the lgdt3303 should be able to demodulate them. Unfortunately, this will be tough to test within the USA, unless you know for sure that your cable company uses QAM64. > > Markus > >> The lgdt3303 demodulator, >> however, is able to demodulate QAM256, QAM64, 8VSB and 16VSB. Its only >> practical use within the hvr950 is for VSB only. >> >> Matthew has mentioned the HVR1600 -- This is a completely different >> device, using entirely different hardware, and it is a PCI device. On >> the bright side, the HVR1600 is able to tune both QAM and VSB, but Linux >> support is far from ready. (The right people are working on it, though >> :-) ) >> >> Sorry for the bad news. >> >> Regards, >> >> Mike Krufky >> >> >> > > _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
