Here is a link to the FCC database for television reception.
http://transition.fcc.gov/mb/engineering/maps/
It assumes that you have an outside antenna 30 feet in the air.
You will need an antenna rotor because some signals come from the south and others from the north.
Check the homes outside of TV and see what sort of antennas they have.
In looking at the data from Lady Lake (32159) it looks like the only network that can be received with an indoor antenna is UNIVISION (Spanish).