Siemens & Halske AG radio valve, 1884-1936
1884-1936
Fotos triode valve with two top caps (McVitie Weston valve collection), 1916-1972
1916-1972
Transistor, early British Experimental Device from Pye Radio Research Labs
Early junction transistor (B.T.H.), c.1953
Magnetron block
De Forest audion 1906-1915
1906-1915
De Forest Audion soft detector triode (McVitie Weston valve collection), 1906-1972
1906-1972
Submarine repeater valve, 1950-1960
1950-1960
RCA 955 Acorn UFH triode vale (McVitie Weston valve collection), 1935
1935
E.S.75 wireless valve, 1883-1930
1883-1930
Ostar-Ganz general-purpose triode valve (McVitie Weston valve collection) 1906-1972
1906-1972
Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939
1939
Mullard T.H.4 radio valve, 1936
1936
CV1025 triode, 1906-1965
1906-1965
RCA Radiotron 35 VM RF pentode valve (McVitie Weston valve collection), 1931-1972
1931-1972
Submarine repeater pentode P.O. type 10P, 1950-1970
195-1970
Mullard video output pentode, T.S.P.4, 1920-1936
1920-1936
Mazda QP.240 battery double output pentode valve (McVitie Weston valve collection), 1935
1935
S.215 dummy valve, 1920-1929
1920-1929
Loud speaker valve type L.S.5. W/T, 1923
1923
Mazradia E4M triode valve (McVitie Weston valve collection), 1910-1960
1910-1960
Cossor OM6 pentode valve (McVitie Weston valve collection), 1925-1946
1925-1946
One of Fleming's first thermionic diode valves, 1889
1889
First sealed-off travelling wave tube, 1945-1946
1945-1946
General Electric CA101 Pilotron triode (McVitie Weston valve collection), 1918
1918
Sargrove sprayed circuit radio receiver production prototype, 1936-1948
1936-1948
AF triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
Western Electric 717A pentode, 1926-1966
1926-1966
Radio valve, 1936-1939
1936-1939
Mullard VP13C thermionic valve, 1934-1988
1934-1988
Marconi Osram DE 5b radio valve, 1920-1937
1920-1937
DA 60 RF triode valve, 1929-1972
1929-1972
Thorpe 4-electrode valve (McVitie Weston valve collection) 1924
1924
Mullard PM6D output triode valve (McVitie Weston valve collection), 1929-1972
1929-1972
Cosmos DE.11 general-purpose triode valve (McVitie Weston valve collection), 1924
1924
Collection of early valves, 1915-1945
1915-1945
Submarine-repeater pentode, P.O. type 6P10, 1950-1970
1950-1970
Post Office PO/VA No. 2 triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
FE1 valve, 1920-1966
1920-1966
Amplifying valve type V24, 1920-1922
1920-1922
L.S.2 radio valve, 1920-1938
1920-1938
McVitie Weston valve collection, Hivac XL HF triode valve, 1935
1935
Ora wireless receiving triode, 1921
1921
Osram A.T.40 triode valve, 1921-1934
1921-1934
Passive component plate, type A3, for Sargrove sprayed-circuit radio receiver, 1936-1948
1936-1948
Mazda 1R5 heptode valve, 1933-1966
1933-1966
Submarine repeater pentode, 1950-1970
1950-1970
Osram W30 VM RF catkin pentode valve (McVitie Weston valve collection), 1935-1972
1935-1972
Emitron 6X4 rectifier, 1931-1966
1931-1966
Radio valve, micromesh type 7A.2, 1932-1933
1932-1933