Knochenhauer spirals, 1963
1963
Ekco AD36 radio receiver in phenolic plastic case, 1935
1935
Crystal radio receiver
circa 1923
Mullard pure music cone loud speaker
1928
Flat steel-spring (or watch-spring) coherer, 1894
1894
Spiral spring coherer, 1890-1894
1890-1894
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
Ferrograph model 4A tape recorder
1959-1962
Aerial wire for use with home broadcast receivers, 1920-1940
1920-1940
Television receiver built from 'Premier Radio' kit, 1945-1955
1945-1955
Rexophone crystal set with two pairs of Telefunken headphones (out of three), 1923-1930
1923-1930
Marconi magnetic detector No. 12739 with cover, 1900-1950
1900-1950
Coaxial switch from 'Oscar One' CB transceiver, 1980-1983
1980-1983
Mini SWR bridge from 'Oscar One' CB transceiver, 1980-1983
1980-1983
Low-pass filter from 'Oscar One' CB transceiver, 1980-1983
1980-1983
Antenna tuner from 'Oscar One' transceiver, 19801-983
1980-1983
Mobile aerial from 'Oscar One' CB transceiver, 1980-1983
1980-1983
Stud field regulator, 1900-1950
1900-1950
High-frequency chokes, 1900-1950
1900-1950
Low frequency iron core inductance, 1900-1950
1900-1950
Copper busbars and ebonite insulators, 1900-1950
1900-1950
Aerial tuning inductance, 1900-1950
1900-1950
'Cat's whisker' Crystal Radio
1920-1925
Ferguson television receiver, 20", black-and-white, 1979
1979
Cosmos crystal receiver, 1920-1930
1920-1930
Instruction booklet for Cosmos crystal receiver, 1920-1930
1920-1930
Straight horn loudspeaker, 1921-1926
1921-1926
Amplion loud speaker with wooden horn, 1925
1925
Brownie crystal receiver and pair of Lissen headphones, 1924-1927
1924-1927
Three-ring Enigma cypher machine in oak wood transit case
1934
De Forest syntoniser, 1902-1907
1902-1907
'Italian Navy' detector, 1899-1901
1899-1901
Ekco AD75 radio receiver, 1946
1946
Gecophone broadcast receiver, model B.C 3200, 1924
1924
Radio tuning coil No. 150, 1922-1923
1922-1923
Radio tuning coil No. 100, 1922-1923
1922-1923
Radio tuning coil No. 300, 1922-1923
1922-1923
Radio tuning coil No. 200, 1922-1923
1922-1923
Demonstration radio receiver
1926
'Radio at a glance' chart, 1925-1935
1925-1935
Wartime civilian receiver A.C.mains type, 1944-1945
1944-1945
Moulded unprocessed bakelite panel ready for ECME, 1936-1955
1936-1955
Six-stage super heterodyne receiver processed on the ECME system, 1936-1955
1936-1955
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
DLR No. 5 headphones from Wireless Set No. 38, 1939-1945
1939-1945
Pye PTC 2007 radio telephone, 1955-1964
1955-1964
Oscar One CB mobile/base radio transceiver, 1980-1983
1980-1983
Part of Rugby transatlantic telephone transmitter, 1927-1956
1927-1956
Wireless World Diary, 1933
1933
Two-valve short wave radio - telephonic receiver, 1927
1927