Mufax chart recorder D-665-C, and Mufax picture receiver D-611-Uf, 1969.

Mufax chart recorder type D-665-C, 1969.

Motorcycle courier collecting a package for picture library clients, July 2001.

Early ground radar transmitter, type TF3, late 1930s.

Low power transportable radio transmitter, c 1924.

Low power transportable radio transmitter, c 1924.

Sectioned desk telephone transmitter and receiver, 1926.

Wheatstone's automatic telegraph transmitter, 1858.

Wall telephone using a Blake transmitter, c 1880s.

Theiler's type printer transmitter, c.1864.

Bell's liquid transmitter, March 1876.

Theiler's type printer transmitter, c.1864.