There are 150 Free HDTV channels in Florida already. Every network transmits in HDTV and you don't need Cable or Satellite to watch them. In fact, HDTV signals are sharper using a simple TV antenna, indoors or out, depending on where you live or work.
While HDTV set prices are falling, your old TV will work just fine using an antenna and a reliable HDTV Tuner. Antennas cost about $300, but if you live in the city $30 indoor antennas work fine. DOTS on the Map (above) link you to what you need to know for your city: