BBC1 Testcard Christmas
Broadcast
1981
The BBC One caption overlay was a little crude by modern standards. It was produced by a dedicated unit that had the relevant parts from an 'Anchor' machine (an early form of electronic caption generator, before the introduction of Astons and Ryleys).
![image from: BBC1 Testcard Christmas](https://tvark.org/media/1998i/2018-02-16/dbb3d9d1c546d05cac7f2c2e5754afd69b08f6ec.jpg)