(Source: Stephen, G7VFY, via the Southgate ARC)
Produced by the GPO Film Unit. Models are used to demonstrate the working of a teleprinter. Shown is how the pressing of a key on the keyboard generates a five unit teleprinter code, is then transmitted as a serial code to the teleprinter line and finally is decoded to select the correct character on the type wheel of the printing mechanism of the receiving teleprinter.
UK radio audience data was recently released and indicates that more people than ever are listening to radio. Why is that? Kate Chisholm from the