[mythtv-users] Hauppauge WinTV-quadHD TV Tuner Card 1609 and Pixelation

[Allen Edwards]

On Wed, Feb 20, 2019 at 4:24 PM Barry Martin <barry3martin at gmail.com> wrote:

>
> Hi Allen!
>
> Given everything you have said I would say that there are two
> possibilities. One is the loss of signal strength you are suspecting. In
> that case a higher gain antenna might help.  Unlikely that a better tuner
> would help as you have tried amplifiers and report no change (I think you
> said that).
>
> The other thing you might be seeing is multipath or direct signal fading
> which can certainly show up more when there is wind as the tuner cannot
> adapt to the change in multipath or signal level fast enough.  In this case
> a new tuner might help if the new chip is better at dealing with fast
> changes in the signal characteristics.
>
> Thanks for the detailed and informative reply (which I only partially
> quoted). As the problem with recording occurs only with windy weather
> conditions I’m leaning towards the second part of your answer and getting a
> new tuner (the Hauppauge 1609). I will try to check for specifications on
> DSP, AGC, and sensitivity. ...Now for another set of questions: what
> numbers are we looking for in Digital Signal Processor, Automatic Gain
> Control, and half-know the lower the µV the more sensitivity. And then I
> have the funny feeling they’re inter-related.
>
> ...Looked and did not see mention of the DSP, AGC nor any of that type of
> specification – guess you’re off the hook trying to explain to a hobbyist!
> <jk>
>
> Right now plans are to finish a current computer project before starting
> the one for the new Backend. Appreciate the input!
>
> Barry
>

I looked at the specs on the 1609 and there is nothing useful there so you
just have to try it I guess.

If the tuner doesn't work, try a high gain antenna. Try different
directions. You might find a reflected path that is strong and doesn't have
trees in the way.

Good luck. I would be interested to see how works out.

Allen
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