[mythtv-users] Ignoring certain channels from certain inputs

Mark Greenwood fatgerman at gmail.com
Mon Oct 22 10:06:29 UTC 2012


On 22 Oct 2012, at 10:49, Mike Perkins wrote:

> On 21/10/12 12:08, Mark Greenwood wrote:
>> 
>> Thanks all for your informative responses. My TV is a Panasonic and has
>> always tuned itself perfectly wherever I've lived.
>> 
> (snip)
>> 
>> What are transports? How do I know which transports match my good
>> transmitter? Where do I go to select the transports once I've found out? Why
>> do I even need to know all this when Panasonic can make a TV that does it all
>> for me?
>> 
> (snip)
>> 
> I think you might be over-confident in your assumption of what your Panasonic TV is actually doing. If it is doing anything like our Hitachi TV, it is just scanning from the lowest channel upwards and assigning channels (within transports*) on a first-come first-served basis possibly just overwriting older data with later data.
> 
> I, too get signals from three different transmitters, and all three are in different BBC/ITV regions. I have to do almost as much work with the TV as I do with my myth system in order to receive the correct local news.
> 
> If I hadn't gained experience doing this for mythtv I probably would never have realised what the TV was doing, and just put up with the wrong local programming.

I think you're probably right. One thing I learned from doing this is that my 'third' transmitter appears to actually be some kind of back-reflection or refraction of a good signal from my main transmitter - myth had one of the transports listed twice, but without a channel id in one instance. Deleting that one and rescanning made the troublesome channels all start working, even on the Haupauge stick that couldn't get them at all before. I shall now be looking more closely at my TV settings.

> 
> * Transports are also known as multiplexes. Those in the US confuse things for us over here by calling a multiplex a channel and a channel a sub-channel :)

Do you know how to relate the transport to the 'channel number' that my TV displays while tuning (e.g. 'Scanning channel 21', 'Scanning channel 22' etc)? That might be helpful information to get it to ignore the unwanted signals I'm getting from the Oxford transmitter.

Thanks,

Mark

> 
> -- 
> 
> Mike Perkins
> 
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