Go to the link below and type in your friends address. The site will tell you what channels may be possible to receive at that address. From there you can decide whether an antenna is even a possibility. When we first moved to the Villages we used an antenna. We where only able to get two stations with very poor reception. Our neighbor across the street had an antenna installed in his attic. He said it works quite well for them.
AntennaWeb - Antenna Signal Prediction
Good Luck