[mythtv-users] External Channel Change Script for DVB cards

Devin Heitmueller dheitmueller at kernellabs.com
Sat Oct 29 15:29:20 UTC 2011

On Sat, Oct 29, 2011 at 10:39 AM, Colin Albert <colintrebla at gmail.com> wrote:
> I am reviving and old thread.  It relates to an issue that is a problem for
> me and will be an ever increasing problem as Cable companies continue to
> adopt SDV.
> The problem: I have a QAM card and want to build a MythTV box instead of
> using the cable company's (busted/worthless) DVR. The cable company uses
> SDV, so QAM is limited to OTA locals.
> My solution: get a set top box from the cable company, hook it to my
> MythTV.  Use a External channel change script to change channels so that the
> box is requesting the channel that I want. Then change the channel on the
> QAM card to that channel.

This won't work.  The RF output on the set top box is NTSC (analog
only).  You won't be able to tune to it with a QAM tuner.  You would
have to use an analog tuner set to channel 3.


Devin J. Heitmueller - Kernel Labs

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