After the digital conversion in 2010, most of the stations have
substations such as 4.1 or 4.2 for additional programming such as
weather.
You can use the following TV Guide tool to see all of the
subchannels available in your area.
Start by entering your zipcode
Click [Next] and select ANTENNA as your service type
Now select the broadcast service provider
You will also need to select None of the Above for premium
channels since you will not be able to subscribe to them.
If you do not have any stations around you then you would not be able
to pick up any stations no matter which antenna you get because of the
geography around you or the lack of towers in your area. If you do
have a list of stations displayed, you can click on the station to see
where the broadcast tower is located relative to your location. You
can also click on the image of the tower to see the tower distance
from you. Once you have a good idea where the towers are located and
what channels you can receive, you can begin to select the right
antenna for you.