What is a digital converter box?
It picks up digital broadcasts over the air and translates the signal into a form that older televisions can process. Boxes are available at most electronic stores for $50 to $60. Contrary to some reports, converter boxes do not make older televisions broadcast in high-definition, and there is no monthly fee involved.
A digital converter box connects to your existing TV and allows it to receive free over-the-air digital TV signals. A digital converter box is a one-time purchase with no monthly fees. One converter box is necessary for every TV that doesn’t have a built-in digital tuner and that receives its signal over the air with an antenna.