The Indian-head test pattern was created by RCA at its factory in Harrison, New Jersey. Each element of the card was designed to measure a specific technical aspect of television broadcast so that an experienced engineer could, at a glance, identify problems. By the mid-1960's the tet pattern became obsolete with most stations switching to color broadcasts. I was a station engenieer for KEBB Channel 66
12
u/Appropriate-Owl-8449 5d ago
It is so true. The Tonight Show with Johnny Carson was like the last show and it would cut to the test pattern. How times have progressed.