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

[Marco Nelissen]

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?