[mythtv-users] ASTC~NSTC

Daryl McDonald darylangela at gmail.com
Mon Aug 19 22:42:06 UTC 2013


On Mon, Aug 19, 2013 at 6:35 PM, Joseph Fry <joe at thefrys.com> wrote:

> >>>> 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.
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I have two sources, FTA antenna, 25 digital and STB cable, 75 analog, a
digital signal comes in on the coax and Cogeco mashes it through a DCT700
and it comes out analog. I can get digital channels from the coax without
the box, but not the encrypted channels, and I only have two cards .

Daryl
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