NT46 or NT57 silica triode valve from the early ground radar transmitter type TF3, 1936
1936
Fleming Oscillation Valve
1905
NT46 or NT57 silica triode valve from the early ground radar transmitter type TF3
1936
"Round" soft triode radio valve
Radio valve, Western Electric 216A
McVitie Weston valve collection, Hivac midget valve type XD
1935
Radio valve, Mullard Acorn (1919)
McVitie Weston valve collection, Hivac valve, type A15
1937
Radio valve
Radio valve type 4304 A
Loewe radio valve, type 2HF
Radio valve
Hivac B220 radio valve
McVitie Weston valve collection, Hivac valve, type D210
Radio valve, Western 4211-E
Radio valve, Tungar rectifier, 6 amp. type
Radio valve type 4017 B
McVitie Weston valve collection, Hivac valve, type VP216
Radio valve, Mazda U.U.2
Radio valve, Brunswick 238
Radio valve type 4242 A
Radio valve, Myers Tubular
Radio valve type 4282 B
McVitie Weston valve collection, Hivac valve, type J240
Radio valve, Mazda P.P. 5/400
Radio valve, MS/PEN A
Radio valve - 4278 A, screened grid
Loewe radio valve
Radio valve, Mazda A.C. V/P1
McVitie Weston valve collection, Hivac valve, type D210
Radio valve, Osram M.U.12
De Forest
Radio receiving valve W.D. type AR
Light bulb, or radio valve envelope
1968
Radio valve type 4036 A, micro-ray tube
Radio valve, Marconi Osram D.E.7
R.C.A. all metal radio valve type 6c5
Radio valve, Ediswan U 235
Radio valve R.C.A., type 47, pentode
Radio valve, Mazda U.U. 120/500
Radio valve, Osram L.S.5.6.
Radio valve, Mullard PZ1-35
Radio valve, Ferranti H.4.D.
PT54 (Hivac Z220 Harries) beam tetrode
McVitie Weston valve collection, Hivac valve, type B220
1937
Light bulb, or radio valve envelope
1968
Light bulb, or radio valve envelope
1968
Radio valve, Mullard 1W4/350
R.C.A. all metal radio valve type 6F6
