Austin TX's CBS channel is KEYE on 42.1
https://en.wikipedia.org/wiki/KEYE-TV
We have 3 Roku TV's in the house which we have recently re-scanned the channels.
When tuned to 42.1 we do get CBS and when we edit the channel lineup, the Roku TV's do indicate they know it is CBS, but when looking at the channel in the Guide, they indicate that it is The Family Channel and the programming is completely wrong.