Was TBS the first super channel or WGN? I remember WGN going national on cable systems early on, but I think the difference was that WGN’s programming was still sort of local and TBS took a different approach with a bunch of popular shows in syndication. Both had baseball though.
From what I could find WGN microwaved broadcasts to some surrounding states
Beginning in the
mid-1970s, WGN-TV in Chicago expanded its reach by having its signal
retransmitted via microwave relay to cable television systems in the central Midwestern United States
Regional Reach: By the fall of 1978, the signal was carried by 574 cable systems, bringing WGN to parts of Illinois, Indiana, Wisconsin, Michigan, Minnesota, Iowa, and Missouri, reaching an estimated 8.6 million subscribers
WTCG which became TBS (Channel 17 in Atlanta) expanded its reach in the early-to-mid 1970s via
microwave relay
- By the early 1970s, cable systems in middle/southern Georgia, Alabama, Tennessee, and South Carolina began picking up the Atlanta UHF signal off-air and retransmitting it. [1, 2]
- Expansion Metrics: By June 1976—several months before the national satellite launch—WTCG was already carried by 95 cable systems in six Southeastern states, reaching approximately 440,000
google search found:
>TBS (formerly WTCG in Atlanta) was the
first TV superstation, officially launching its national satellite feed on December 17, 1976. Ted Turner pioneered the concept by beaming his independent Atlanta station to cable providers nationwide. WGN Chicago followed later, becoming a national superstation on November 9, 1978<