Editing List of BBC test cards (section)

==Test Card D==
[[File:Testcard_D.png|thumb|right|Test Card D]]Test Card D was a television test card first broadcast on 5 May 1964 by both the BBC and the ITA.<ref name=":1" /> This Test Card was a joint effort between the BBC, BREMA and the ITA.<ref name=":1" />

This was the first test card to be based on a specification.<ref>{{Cite web|url=https://www.flickr.com/photos/tim_anderson/27952357306/|title=Test Card D BBC|date=July 30, 2015|via=Flickr}}</ref> Test Card D was amended, and the amendment introduced on 1 December 1965 as the radio and television trade objected to the original. Both versions had Reduced Power variants from the start.