Hans Verkuil wrote:
>>
>> http://bryars.eu/gallery/tvcapture/wintv150_cap
>> http://bryars.eu/gallery/tvcapture/wintv500_cap
>>
>
> The PVR500 is basically just a single card with two PVR150 units on
> it, so from the point of view of the driver there is NO difference
> between a PVR150 and a PVR500. They are handled exactly the same.
There are reports of people having problems online with these cards
and Hauppauge are giving  people a download with a program to change
the tuner to "LNA mode" some alternate tuning mode, does anyone know
what this LNA mode is? Do the linux tuners support it? I'm going to
find a machine to put windows onto and install this card and test it
with the windows driver and the LNA utility and see if it make a
difference.
>
> What does make a difference is that the PVR500 splits the antenna
> signal internally and so requires a better quality signal. The
> other difference is that the your PVR500 has a different tuner, but
> the Philips tuner is generally quite good (avoid PVR500's with a
> Samsung tuner, BTW).
Well, This banding occurs on a good quality signal too, even on a 30cm
bit of coax from an RF Modulator on a Satellite receiver. I put an
attenuator in line and it just made the picture fuzzier and still have
banding. I have ordered another card to test to see if the one I have
is just broken.

Have hauppauge changed to using the Philips instead of the Samsung,
vica versa, different ones in different areas for PAL/NTSC or just
whatever  is cheapest on the day they order a batch to be manufactured?
>
> You could try to capture from the composite or S-Video input, this
> bypasses the tuner circuitry and should give completely identical
> results for the PVR150 and PVR500.
Pretty much, yes, arguably marginally better on the 150 still, but not
enough different that I could say this with certainty, and certainly
no extreme banding like I see when RF Tuned.

Regards,
 Mark Bryars


-- 
Mark Bryars
Product Development Engineer
ETV Interactive Ltd
Logie Court
Stirling University Innovation Park
Stirling
Scotland, UK
FK9 4NF
T: +44 (0) 1786 455150
F: +44 (0) 1786 455179
W: www.etvinteractive.com


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