On Wednesday 18 October 2006 23:06, Eric Paynter wrote:
> On Wed, October 18, 2006 1:26 pm, Hans Verkuil said:
> > On Wednesday 18 October 2006 20:25, Eric Paynter wrote:
> >> Several months ago, Ryan P ([EMAIL PROTECTED]) posted to this
> >> list that he had the data sheet for the Samsung TCPN2221P30A Tuner
> >> and if anybody wanted it, let him know. Well, I did. No response.
> >> Does anybody else have it?
> >
> > I have it (given to me by someone else), but I was asked not to
> > give it to others. Is there anything specific that you want to
> > know?
>
> Well, I'm entirely unhappy with the amount of static and other
> interference in the image that my PVR-500 is producing. At the same
> time, the image my TV produces using its own tuner is near perfect.
> There is no reason why the PVR-500 can't do as well (unless the
> TCPN2221P30A is just a crappy tuner). So, I'm looking to see if I
> can find any way to tweak the tuner to improve its reception.
Kernel 2.6.18 contains full support for the tuner based on the
datasheets (a bit called the 'Low Noise Amplifier' had to be set).
Older kernels did not set that bit and so have poor quality. But even
with that bit set you have to realize that the signal is split over two
tuners, so that in itself reduces the signal quality. You may need an
antenna amplifier. Also in my experience the quality of the PVR500 is
less than a PVR350/250/150, even with amplifier. Your mileage may vary,
though.
Anyway, better than what's offered by the 2.6.18 kernel is unlikely to
happen. It should be equivalent to what the Windows driver does.
Regards,
Hans
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