I brought my roku from home to an airbnb. Roku is saying it is not in our home area, so live tv is not available. I thought you should be able to access everything on roku when traveling?
Roku devices (as opposed to RokuTVs) have no antenna inputs and can't receive local stations directly. So any locals you get with a Roku device have to be through a streaming channel app that relays your local stations.
You might get some help via Settings > System > Zip Code, but I doubt it. You'll probably need to check with whatever app you're using about this.