De Forest Audion soft detector triode (McVitie Weston valve collection), 1906-1972
1906-1972
CV1025 triode, 1906-1965
1906-1965
Ostar-Ganz general-purpose triode valve (McVitie Weston valve collection) 1906-1972
1906-1972
De Forest audion 1906-1915
1906-1915
Submarine repeater valve, 1950-1960
1950-1960
Submarine repeater pentode P.O. type 10P, 1950-1970
195-1970
RCA 955 Acorn UFH triode vale (McVitie Weston valve collection), 1935
1935
Mazda QP.240 battery double output pentode valve (McVitie Weston valve collection), 1935
1935
Mullard video output pentode, T.S.P.4, 1920-1936
1920-1936
Siemens & Halske AG radio valve, 1884-1936
1884-1936
Cossor OM6 pentode valve (McVitie Weston valve collection), 1925-1946
1925-1946
Fotos triode valve with two top caps (McVitie Weston valve collection), 1916-1972
1916-1972
E.S.75 wireless valve, 1883-1930
1883-1930
RCA Radiotron 35 VM RF pentode valve (McVitie Weston valve collection), 1931-1972
1931-1972
Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939
1939
Loud speaker valve type L.S.5. W/T, 1923
1923
Mullard T.H.4 radio valve, 1936
1936
S.215 dummy valve, 1920-1929
1920-1929
Mazradia E4M triode valve (McVitie Weston valve collection), 1910-1960
1910-1960
Mullard VP13C thermionic valve, 1934-1988
1934-1988
Nelson multi A valve (McVitie Weston valve collection), 1920-1930
1920-1930
Cosmos DE.11 general-purpose triode valve (McVitie Weston valve collection), 1924
1924
FE1 valve, 1920-1966
1920-1966
First sealed-off travelling wave tube, 1945-1946
1945-1946
Osram W30 VM RF catkin pentode valve (McVitie Weston valve collection), 1935-1972
1935-1972
K.L.1 ungettered valve, 1920-1927
1920-1927
Raytheon 6D6 VM RD pentode valve (McVitie Weston valve collection), 1934-1972
1934-1972
McVitie Weston valve collection, Hivac XL HF triode valve, 1935
1935
Thorpe 4-electrode valve (McVitie Weston valve collection) 1924
1924
Mazda 1R5 heptode valve, 1933-1966
1933-1966
Submarine repeater pentode, 1950-1970
1950-1970
CV525 pentode, 1924-1965
1924-1965
Submarine-repeater pentode, P.O. type 6P10, 1950-1970
1950-1970
CV1092 diode, 1904-1965
1904-1965
AF triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
General Electric CA101 Pilotron triode (McVitie Weston valve collection), 1918
1918
Amplifying valve type V24, 1920-1922
1920-1922
Osram A.T.40 triode valve, 1921-1934
1921-1934
Submarine repeater pentode P.O. type 8P, 1950-1970
1950-1970
Radio valve, 1936-1939
1936-1939
Mullard PM6D output triode valve (McVitie Weston valve collection), 1929-1972
1929-1972
One of Fleming's first thermionic diode valves, 1889
1889
Collection of early valves, 1915-1945
1915-1945
Radio valve, micromesh type 7A.2, 1932-1933
1932-1933
DA 60 RF triode valve, 1929-1972
1929-1972
Sylvania 1LA6 frequency changer valve, 1931-1966
1931-1966
VT60A triode 807 valve (McVitie Weston valve collection), 1906-1972
1906-1972
L.S.2 radio valve, 1920-1938
1920-1938
Post Office PO/VA No. 2 triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
Cossor Wurncell W.1 output triode valve (McVitie Weston valve collection), 1923
1923