Trade test colour films were broadcast by the television network BBC2 in the early days of colour television in Britain during the long periods of the daytime when no regular programming was scheduled, with the exception of Play School. The goal of these transmissions was to provide colour broadcasting in these intervals for use by television shops and engineers (the 'trade') to install, adjust and demonstrate their television sets.
Trade test colour films were broadcast by the television network BBC2 in the early days of colour television in Britain during the long periods of the daytime when no regular programming was scheduled, with the exception of Play School. The goal of these transmissions was to provide colour broadcasting in these intervals for use by television shops and engineers (the 'trade') to install, adjust and demonstrate their television sets.
Source: Wikipedia "Trade test colour films" · CC BY-SA 4.0
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