Not sure what you have for a antenna. If you have the crank up kind make sure it is fully raised then you have to turn it then scan then turn and scan until you get the best reception. We usually try straight up then a 1/4 turn one way then 1/4 turn more then the same for the other side . Then what ever way has the best reception we go back to. Takes a while to scan with each position. If someone is close you can see what direction there antenna is pointed and start there.
If you have the UFO looking kind they are hit and miss. I have a uncle with that type and we get TV when he doesn't.
And as stated remember to turn on the booster.