If the results of a recent study by the Association of Public Television Stations is to be believed there are tougher times ahead for television broadcasters in the U.S. According to the study only about 19% of of the 21 million people who currently count on Over The Air (OTA) broadcasts for television viewing plan to either subscribe to a satellite or Cable Television service or purchase one of the converter boxes that will soon be available for converting digital TV (DTV) to a format an old fashioned analog TV can handle...