Three-Dimensional (3-D) Television - In the early 1950s, ABC was granted permission by the Federal Communications Commission to explore the feasibility of 3-D TV. On April 29, 1953 the network ran a trial live broadcast of the series SPACE PATROL in Los Angeles at the National Association of Radio and Television Broadcasters 31st Annual gathering. The ABC affiliate station KECA-TV aired the show but it appeared as only a blur unless viewers had a pair of special Polaroid lenses. Three-Dimensional television attempts to give the same depth of viewing as the human eye.