
3 2 c m
40cm
actual image size: 32cm x 24cm
Description
For many early radio listeners, purchasing a receiver which came with a loudspeaker was prohibitively expensive. Instead, they would listen to programmes through headphones. A crystal radio sets was a simple and cheap option. It consisted basically of a tuned circuit and a crystal detector, and had no batteries, the power delivered to its headphones all coming from the transmitter. This radio was manufactured by the Brownie Wireles Co of Great Britain Ltd.
Image Details
Image Ref.
10251764
© Science Museum / Science & Society Picture Library