After February 17, 2009, all analog signals will be broadcast in digital. The main reason behind the switch is that digital signal takes less bandwidth than analog, and as a result, broadcasting companies will be able to add more channels for a lower cost. You will most likely need a digital-to-analog converter box if your TV is older and does not support digital signal. This will be great business for the manufacturers of these converter boxes. How many of you still watch analog TV?