Test Card C The 405-Line Years
| Test Card 'C' was first used in 1948. The pattern was revised
in 1950 to reflect the change from 5:4 to 4:3 aspect ratio.
This version introduced in 1958 drawn up by Marconi's
reflects the need for station identification. The framing arrows first appeared on this version of 'C', does anyone know when exactly? |
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The font used for the 'BBC' & 'REDUCED POWER' captions is Rockwell the big 'C' is Gill Sans (what else?). |
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