Here is a list of channels that will be available to watch with rabbit ears, or a good roof or attic antenna.
The good news is with the new over the air TV standard, your existing antenna will work perfectly fine. The bad news is, you'll need to get an add-on ATSC 3.0 Tuner box. Because, most existing televisions don't have a ATSC 3.0 capable tuner built-in.
But be sure to check out the list of new channels that are already available or are coming soon here on rabbitears.info