<blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;" class="gmail_quote">On Apr 15, 2006, at 10:32 PM, Michael Horn wrote:<br>
<br>
> Ok, I've finally got my mythtv box set up and running. I'm still in<br>
> the process of tweaking it and my current issue involves the<br>
> picture quality of the tuner in the pvr-150. While the picture is<br>
> certainly watchable, colors are very dull, and the image is very<br>
> grainy. I've played with different capture resolutions, and have<br>
> ruled that out as an issue. My next step was to try out the tuner<br>
> in my good old vcr. I ran the cable line to the vcr, and then<br>
> composite cables to the pvr-150, and got a huge increase in picture<br>
> quality, colors looked better, smoother image etc. Now, I'm hoping<br>
> this is an issue that can be resolved, be it through software<br>
> settings or whatever, as I'd hate to thing the tuner in my cheap<br>
> vcr does such a better job than that in the pvr-150, especially<br>
> after all the reviews ive read of the great picture quality. Any<br>
> suggestions to improve the tuner quality would be greatly<br>
> appreciated, or else it looks like I'll be settin up the ir blaster<br>
> to take advantage of my vcr tuner.<br>
><br>
<br>
Have you tried adjusting the fine-tuning, or is it possible that you<br>
are using the incorrect frequency table (STD,IRC or HRC) and your<br>
tuner is just barely pulling it in? What you describe could be caused<br>
by being off freq. a bit.<br>
<br>
I have also compared the RF-tuned signal to using the baseband inputs<br>
from an external tuner and found them to be virtually identical, and<br>
that's on 4 different PVR-150s.<br>
<br>
I do know, however, that HogPaws has used several different tuner<br>
modules, and perhaps some are better than others, but I have two<br>
different modules (my MCE version is different) and they all look the<br>
same.</blockquote>
<div><br>
Thanks for the the quick response Brian. The frequency table I'm using
is correct. As for fine tuning, I'll check that out and see if it
helps. I don't know if this will help to diagnose the problem, but on
top of the general graininess and poor color, the lower channels seem
to exhibit kinda of a rolling interference as well.<br>
Also, the tuner in my unit was never automatically detected, so I've
had to pass the tuner type to the module, and have been using 50 from
the beginning as it was the first I tried and allowed me to pull an
image. I'll go ahead and start playing around with some others, but
could that have a bearing on this as well? And finally, on that note,
is there any resource out there that combines some documentation on all
the different options that can be passed to the ivtv module in one
place? in my searches involving different issues I've managed to piece
together what some of them do, but some sort of inclusive documentation
would be great.<br>
<br>
</div><br>