TV hook up

[trackstand]

I am going to install a OTA antenna up on a 20' tall pole up at Our place in Mi.
My question is I get about 5 channels just with the camper antenna now. they fade in and out depending on the weather. the new antenna will be about 10' higher up. I will run the RG6 to the hook up on the camper. how does the camper choose which line has better reception? do I have to switch something on the tv?

Thanks