Patrick Boettcher wrote: >>> Anyways, the r3 does demodulate QAM -- you can read about some user >>> experiences here: http://www.avsforum.com/avs-vb/showthread.php?t=509869 >>> >> >> In regards to the Broadcom 3510 based Air2PC r0.2 card still selling >> on ebay, it appears from the Broadcom product brief >> (http://www.broadcom.com/collateral/pb/3510-PB05-R.pdf ) that it >> should be able to handle demodulation of a QAM source. Anyone know of >> any show stoppers that might prevent that from being realized? (Patrick?) > > > Maybe it is working with QAM64, I just tested it with QAM256 and there > was a unreasonable high error rate. > > BBTI told me that there are some hardware problems (either in the demod > or in the tuner not being able to shift QAM-signals correctly to IF) > which prevent the device from being used with QAM. Yes, and this also applies to the nxt2002 based Air2PC. See http://www.gossamer-threads.com/lists/mythtv/dev/120371 There are some people who have it working but that's a small minority. For most people QAM is a no go and it does seem like a hardware issue. (Could it be QAM64 vs QAM256?) OTOH, the new lgdt3303 based card works beautifully with QAM. Bolek
