[mythtv-users] channels missing in the SF bay area

Brad Fuller bradallenfuller at gmail.com
Fri Jun 19 18:14:04 UTC 2009

On Fri, Jun 19, 2009 at 10:49 AM, Tom Dexter <digitalaudiorock at gmail.com>wrote:

> On Thu, Jun 18, 2009 at 10:34 PM, Marco
> Nelissen<marco.nelissen at gmail.com> wrote:
> > OK, so a simple rescan fixed this. I had assumed that the
> > schedulesdirect info would also specify what frequencies the various
> > channels are on, and that mythtv would pick that up, but apparently
> > not.
> >
> >
> > On Thu, Jun 18, 2009 at 7:09 PM, Marco Nelissen<marco.nelissen at gmail.com>
> wrote:
> >> I've been using MythTV for OTA ATSC recording for a while now.
> >> My wife pointed out today that Entertainment Tonight hadn't recorded
> >> in a while. It seems to have started with the DTV transition: I have a
> >> recording on June 11, but all subsequent ones are 'empty'. When I try
> >> to tune the channel (KRON), I get no lock. Several other channels
> >> (KTVU/FOX and KGO/ABC) are gone too. Other channels like NBC and KQED
> >> are still there though.
> >>
> >> Did the missing channels go off the air, did they move, did
> >> SchedulesDirect mess up?
> >> More importantly, how do I get them back?
> >>
> I believe schedules direct uses the ATSC channel numbers (the virtual
> channels like 4.1 etc).  When mythfilldatabase is run, it assigns the
> xmltvid to the channel table where needed, which it gets from
> schedules direct (based on the virtual channel number and the market
> you're in).  Nothing in schedules direct knows anything about actual
> frequencies of ATSC channels.
> ATSC frequencies changed in most markets as of the transition, and
> it's pretty widely advertised that all digital TV tuner devices (not
> just MythTV) would need to be rescanned at that time.
yep, you need to rescan. For instance, Channel 7 has moved from UHF band to
VHF (to the real chan 7 spot)

Brad Fuller
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