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 – |
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