[mythtv-users] Having serious signal quality issues with HDHR

[Greg Oliver]

On Fri, Jan 22, 2010 at 10:55 PM, Mitko Haralanov
<voidtrance at comcast.net> wrote:
> Hi all,
>
> I am really hoping that someone could help me as I have run out of idea
> of what to do!
>
> I am using an HDHR to tune the ClearQAM of my Extended Basic cable in
> San Jose, CA. Recently, I found out that a lot of the channels are
> getting very poor signal quality (no sound, serious pixalization). The
> problem does not happen on all channels with the same tuner just some
> (but enough). MythTV reports 84% signal quality and has no problems
> getting locks but the quality is horrible.
>
> I have tried to rescan using scte65scan and add the new results but
> that did not help at all. I've also updated the HDHR to the latest
> firmware. That also did not help.
>
> While tuned to a channel with bad reception, the backend is logging the
> following messages:
>
> 2010-01-22 20:45:57.520 HDHRSH(10184401-0): RunTS(): data_length = 2632 remainder = 188
> 2010-01-22 20:45:58.340 HDHRSH(10184401-0): RunTS(): data_length = 1316 remainder = 188
> 2010-01-22 20:45:59.261 HDHRSH(10184401-0): RunTS(): data_length = 2632 remainder = 188
> 2010-01-22 20:45:59.975 HDHRSH(10184401-0): RunTS(): data_length = 5264 remainder = 188
>
> I know it is not the signal itself because my TV is directly connected
> to the cable and it can tune the channels just fine. I have not been
> able to find any information on this on either the MythTV Users mailing
> list or the HDHR forums.

I compiled the linux versions of the gui yesterday, and also loaded
the beta firmware.  I noticed (ATSC) worse quality on 1 of my
channels, so moved back to the 102409 firmware, and it went away..

The release notes only mentioned DVB "improvements", but once I moved
back to the released firmware, my channel 11 came back to life.

-Greg