[mythtv-users] ASTC~NSTC

[Joseph Fry]

>>>> The wiki covering general back end set up (written at the time of .21)
>>>> says "TV format" options include ASTC, NSTC, etc... In the distro I'm
>>>> using, .25, "TV Format" options start at NSTC with many other options
>>>> except ASTC. My set up is functional, so I'm not complaining, just
>>>> curious,
>>>> Why can't I select ASTC? I'm using one analog card and one digital card
>>>> at
>>>> the moment so any insights would be appreciated.
>>>>
>>>
>>> You would set it to NTSC for an ATSC system.  The setting isn't really
>>> used too much for ATSC, but choosing NTSC would allow you to use other
>>> things you might see in an ATSC area, such as NTSC via
>>> S-Video/Composite/... outputs from your old VCR or whatever.
>>>
>>
>> Agreed, that is what I selected, I just wondered why, if a wiki from a
>> 0.21
>> distro professed an ATSC option, 0.25 doesn't offer one.
>> If I upgrade to 0.26 will I get an ATSC option? Would it even be useful
>> when I receive only 25 digital channels and some 75 analog channels?
>>
> Where are you in the world that can receive ATSC yet still receives so many
> analog channels?

It's technically impossible.  NTSC broadcast standard only defines 69 channels.

I think he's on cable... he has 75 analog NTSC CATV cable channels and
25 digital **QAM** channels.  He's not using ATSC at all.