The history of the BBC trade test transmission (part 1/4)
This page contains examples of the various tuning signals and test cards used on BBC Television …
The history of the BBC trade test transmission (part 2/4)
Our history of the BBC trade test transmission continues.
The history of the BBC trade test transmission (part 3/4)
Our history of the BBC trade test transmission continues.
The history of the BBC trade test transmission (part 4/4)
Our history of the BBC trade test transmission concludes.