German E10K aircraft radio receiver, c 1937-1945.

Woman examining Mullard valves, Radiolympia, Olympia, London, 1934.

STR 9 VHF aircraft radio transceiver, 1950-1955.

STR 9 VHF aircraft radio transceiver, 1950-1955.

Pye radio, c 1955.

Valve-operated radio, 1955.

Short wave radio experiment, 1934.

FADA Neutrodyne wireles receiver kit, 1925.

Marconiphone crystal-valve radio receiver, 1923.

Philips combined television and radio receiver, type 663A, 1948.

"Pye 'Ranger' VHF radio telephone set, c 1960s."

Radar receiver, 1935.