1973-04-01 Star Channel (PAY), cable company franchised, was launched on some systems.
1973-11-05 Channel 58 (public) was launched in Los Angeles.
1974-00-00 Z Channel (PAY) was launched on some Los Angeles cable systems.
1974-00-00 The Appalachain Educational Satellite Project was lauunched on satellite for fifteen classroom sites.
1974-00-00 the first PTL service was launched on a local TV station in Charlotte.
1974-00-00 Community Video Center public access channel debut in San Diego.
1974-04-13 Westar 1 was launched; it was America's first domestic and commercially launched geostationary communications satellite.
1974-05-05 Channel 68 (public) was launched in Los Angeles.
On June 18, 1973, (correct date), TelePrompTer, HBO and Scientific-Atlanta demonstrate satellite-delivered programming with the Earnie Shavers vs. Jimmy Ellis fight from Madison Square Garden.
In 1973, Congress passes anti-blackout legislation which requires that sold-out games in professional football, baseball, basketball and hockey be made available for over the air television, rather than cable or Pay TV.
In 1973, The FCC approves applications to establish domestic communications satellites, a crucial link in cable program distribution.
Source: The Cable Center website: Cable History Timeline: http://www.cablecenter.org/resources/exhibits/cable-history-timeline.html
Source of date for Shavers vs. Ellis fight: Wikipedia.
In 1973 or before, local cable systems began operating in-house pay movie channels. One of the companies, Gridtronics to name one known company, was a pay television service that delivered videotaped movies to cable systems throughout the United States in the years before pay channels would be transmitted nationally via satellite.