First trip... you likely haven't found the menu setting on your TV yet that asks what input you want to use. Once you find that, and correctly set it to antenna, then you will have to do a channel scan to find all the available channels with the antenna booster on.
In the old days, the channels were just there, and the TV set saw them immediately. Now the TV has to ask you to perform duties first.
Once you have found the available channels, and you move to a new city, you have to look for available channels again.
Crazy how technology gets more and more difficult.