The "Space Patrol" television show began broadcasting March 9, 1950, as a Monday-through-Friday 15-minute show on the American Broadcasting Company (ABC) owned-and-operated Los Angeles station, KECA (now KABC-TV). On December 30, 1950, ABC added a half-hour version of the program to its Saturday schedule. It became an overnight sensation, and the new weekly show and the 15-minute shows continued concurrently on a local basis. It was seen via kinescope syndication in other cities. A 1953 30-minute episode was the subject of the first U.S. experimental 3D television broadcast on April 29 in Los Angeles on KECA (since renamed KECA-TV).