I've been using an antenna for years, mainly because I receive many sub channels that dish does not carry. I found out that we didn't have to pay for locals anymore, so I dropped locals two months ago., reducing my bill by $10 If you attach the antenna co-ax to the TV 'ant.in', you use the TV remote 'input' to change to local TV You can use the TV remote to view a local program guide. [don't forget to do a channel scan]
Using an indoor antenna may cause disappointment with what channels you will or will not receive. If the transmission tower is over 5 miles distance or a hilly area or antenna not near a window, you might not get any reception. Digital is not like analog where you might get a noisy [snow] With digital, it's yes or no.
You can order an OT a converter through dish that you have to buy the antenna from what I understand in Amazon is cheaper? I just ordered one but they have very very similar ones on Amazon and you do not have to buy an antenna you can watch all the YouTube videos on how to set this up my vip722 worked great.. dish had no problem sending me one four years ago I took care of the antenna but now the hopper 2 if this does not saw you 182 bucks because of antenna you can always go to Amazon and get something similar there are plenty of YouTube videos to help you install it and show you