Check out this thread that started over in HDTV Programming; hasn't been moved yet:Central Texas HDTV Summary
It lists the channels in Austin, Waco/Temple, and San Antonio.
A good source for channel assignments is TVRADIOWORLD -- Texas
, pick an city/region and it gives you the channel assignments for that spot.
Then, to double check, go to The FCC Search Page
, and check for Digital TV under "service"; type in the city state, and hit "submit search" -- it will give you the FCC filings of all the stations in that city. If you aren't sure what the city is, then use the call letters -- all caps, no city. Be careful -- it may be "KXAN" or "KXAN-TV" -- you need an exact match.
My guess is that 69 is a mis-hit:
69 is the absolute highest channel in UHF. As far as analog channels go, they generally have "bleed through" up to two channels above/below. Digital doesn't have ther same problem, but with cell phones directly next to them in the spectrum, I would think they would stay away from that channel.