List of BBC test cards
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The following is a list of test cards used by the BBC at various points in broadcasting.
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Test Card A
The world's first television test card to be broadcast, Test Card A made its debut in the late 1940s. However, it and Test Card B were soon replaced by the more useful Test Card C.
Test Card B
Test Card B is an early BBC television test card. It was very similar to Test Card A but was never broadcast. The original card has since gone missing.
Test Card C
Test Card C is a BBC television test card first broadcast in 1948. It was the first test card to resemble the famous Test Card F.
Test Card D
Test Card D was a BBC television test card first broadcast in 1964. This was the first test card to be based on a specification.
Test Card E
Test Card E was a television test card designed in 1964 and made to accommodate the 625-line system on BBC TWO, as opposed to the 405-line system of Test Card D. However, it only lasted one day on television, and was soon replaced by a modified version of Test Card C. This lasted until 1967 when the colour Test Card F was introduced.
Test Card F
See Test Card F
Test Card G
Test Card G was a television test card broadcast occasionally by the BBC. It was the first electronically generated test card to be broadcast, and was a variant of the Philips PM5544 test pattern.
Another Test Card G, unrelated, was developed by Pye as a variant on Test Card C.
Test Card H
A test card abandoned in development - it was never broadcast.
Test Card J
See Test Card J
Test Card W
See Test Card W
See also: Images of test cards