Unidentified Test Card
An electronically generated image was first broadcast on 21 June 1997 on BBC2 between 3am and 4am. The test card was then seen again 17 April 2007 between 4am - 5am during the BBC Learning Zone both transmissions were accompanied by a 4-tone test tone, ranging from extremely low frequency to a very high shrill. It is unknown if this Test Card has a name.
Read more about this topic: List Of BBC Test Cards
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