Valve-operated radio, 1955.

Richardson, Claire

Valve-operated radio, 1955.
3 4 c m
40cm
actual image size: 32cm x 26cm

Description

A portable broadcast receiver, type R55, made by Roberts Radio. This valve-operated radio looks like a transistor radio, and is typical of more expensive 1950s domestic radio receivers. Portable valve radios suffered from the fact that their battery demands made them expensive to run. In 1948, William Shockley (1910-1989) invented the transistor, and in the 1950s, transistors began to replace thermionic valves in radio receivers, allowing much smaller portable radios to be produced.

Image Details

Artist
 
Image Ref.
 
10324695

© Science Museum / Science & Society Picture Library

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