On Sat, 2008-07-12 at 22:14 -0500, Nick Bright wrote: > Andy Walls wrote:
> > This really does sound like a signal quality problem. Just double check > > the suggestions on this page to make sure you haven't got something in > > place that's really going to kill your SNR: > > > > http://www.ivtvdriver.org/index.php/Howto:Improve_signal_quality > > > You are correct about the signal quality, that's for sure. I removed my > splitters and went directly from the cable drop to the ATSC tuner, and > it was able to lock several more carriers. MythTV channel scan now picks > up 4 unencrypted channels, which each appear to have four streams. It's > not all of the programming I should be getting, but it's a step in the > right direction. Good. :) > I was not aware that unterminated leads would cause > signal degradation, but it makes sense. Yes. With the proper termination (ideally) all the wave energy exits the cable and goes into the termination. Without proper termination, depending on the cable length, some fraction of the wave energy will get reflected back and end up as a multipath return (i.e. non-Gaussian noise) at your other tuners. > Unfortunately I've got four of > them, and I know that there are two splitters in my cable box outside > (and I had two in here). I'm going to rewire things down to just one > splitter outside and see how well that helps things. I have also run across a splitter with a bad output before. It was a 1 to 4 splitter and one of the four outputs had a really poor signal out. > Thank you! You're welcome. Glad to help. -Andy _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
