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MS4

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ID = 2535
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to MS4
Similar Tubes
Normally replaceable-slightly different:
  AS494 ; CV1164 ; DW6 ; E217 ; E331 ; E405_MOV ; E442 ; I4091 ; S4150 ; TE42
Other class quality (otherwise equal):
  E316 ; E377 ; E395
Other base:
  MS4_UX
Differences not known by us:
  E340
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Successor Tubes MS4B_Catkin  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source The Saga of Marconi Osram Valve   p. 138, 145, 148, 151, 152, 332
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

ms4_so.png MS4: rtt
Anonymous 10 Collector

More ...

Just Qvigstad
m.s4_osram.png
MS4: osram wireless guide 1931
Giuseppe Antonio Tusini

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Usage in Models 1= 1928?? ; 1= 1929 ; 2= 1930? ; 9= 1930 ; 1= 1931?? ; 15= 1931 ; 1= 1932? ; 12= 1932 ; 4= 1945?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):46

Collection of

 
ms4_achter.jpg

MS4
 

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