Murphy 242 FM/AM broadcast receiver, 1955, and Pam transistor radio, 1956.
© Science Museum / Science & Society Picture Library
The Murphy 242, first released in February , 1955, was a deluxe tabletop valve radio receiver, and the first Murphy radio to be able to tune into broadcasts in the VHF (very high frequency) bands. When Pam, the first all-transistor radio made in Britain, appeared in 1956, there were already portable valve radios, though their battery demands made them expensive to run. When the Pam 710 first appeared it was very much a luxury item, costing roughly a month's wages, but the use of transistors led, before long, to miniature radios at affordable prices.