You need to buy an antenna that looks like an antenna. The ones I suggested in the links are UHF and UHF/VHF. You said you need FM as well. I suggest you get a separate antenna for that. You also said you need an HDTV antenna. Those do not exist outside of the marketing department. Digital...
Have you looked at antennaweb.org to find out the size/type of the antenna you need and the direction(s) to point it? From there you will need to mount it on a pole above the roof line of your home. Run the cable inside to your TVs. Depending on the signal strength you may need to get a...