Beware of the Digital TV Hoax!
You do not have to get cable to get HDTV (Hi-Definition Television). HDTV is available in the same way as the old analog signals that traveled through the airways. Your cell phone signals in many cases are digital and they come from towers just the same. Many have been fooled into thinking they need to subscribe to Satellite TV, Cable, or some other Broadband service. All you need is the proper converter.
HDTV converters are already available and very affordable. They don't look much different than the old rabbit ears.