[mythtv-users] Hauppauge WinTV-quadHD TV Tuner Card 1609 and Pixelation
jfabernathy at gmail.com
Sun Feb 17 23:07:53 UTC 2019
On Sun, Feb 17, 2019, 5:57 PM Devin Heitmueller <dheitmueller at kernellabs.com
> > You mentioned the HVR-2250. I threw that card away because it could not
> receive my local PBS station. my HDHR Connect and Quatro can receive that
> station at ~50%. My new WinTV Quad PCIe receives that station at 83%.
> I would encourage you to be very careful throwing around these numbers
> as they are not an apples-to-apples comparison. Each demodulator chip
> exposes it's SNR and signal level in a different format, so the scales
> are largely arbitrary (and each of the three products you mentioned
> have different demodulator chips). Knowing that 50% is worse than 80%
> is useful for a particular card, but don't think 80% on one product is
> the same as 80% on a different product if they have different
> demodulator chips.
> I'm not doubting the empirical results you've observed (i.e. that
> newer devices are performing better than your older generation
> products) - just the comparison of the actual numbers.
> (speaking as someone who has worked on various ATSC demodulator
> drivers in the Linux kernel).
> Devin J. Heitmueller - Kernel Labs
I would not disagree with you. My point is with my antenna setup the
HVR2250 could not scan the PBS station. The HDHR Quatro could receive the
station with occasional break ups. The WinTV is rock solid.
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