Clue | Source | Date |
---|---|---|
Overnight image on '50s TVs | Newsday | 17 Mar 2023 |
Geometric design used to calibrate a video display | Premier Sunday | 05 Dec 2021 |
*End-of-broadcasting image on old late-night TV | LA Times Daily | 17 May 2021 |
*End-of-broadcasting image on old late-night TV | The Washington Post | 17 May 2021 |
Old late-night broadcast | Wall Street Journal | 21 May 2018 |
Old late-night broadcast | ||
Early TV transmission | ||
Video signal calibration tool | ||
Quality-check broadcast | ||
Quality-check broadcast | ||
National Anthem follower, sometimes |