I’ve heard a lot of viewers experiencing reception trouble say, “I don’t get good pictures with this converter box. I guess I’ll just buy a new TV.”
Buying a new TV will not improve your reception if the real issue is your antenna.
Digital TVs, like the digital-to-analog converter boxes, are equipped with a digital tuner. This device makes it possible for the TV to display the digital picture, but it doesn’t affect the strength of the signal.
It’s mentioned often on this blog, but worth saying again: your antenna is the biggest factor in receiving quality DTV signals. Antenna Web and TV Fool provide lots of helpful information specific to your geographic location.
So unless you simply want to view your digital channels on a newer bigger screen, keep the TV you have and spend a fraction of the cost upgrading your antenna.