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MS4B

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ID = 2536
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to MS4B = 450AC
Similar Tubes
Other shape (e.g. bulb type):
  MS4B_Catkin
Normally replaceable-slightly different:
  MS4_UX ; T4500
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

Plain and metallised bulbs available.

 
Dimensions (WHD)
incl. pins / tip		 x 138 x 45 mm / x 5.43 x 1.77 inch
Weight 52 g / 1.83 oz
Information source - - Manufacturers Literature   
The Saga of Marconi Osram Valve   p. 332
History of the British Radio Valve to 1940
Taschenbuch zum Röhren-Codex 1948/49
9_44~~1.png MS4B: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		ms4b_osram.png
MS4B: osram wireless guide 1931
Giuseppe Antonio Tusini
More ...
Usage in Models 2= 1929 ; 1= 1930 ; 20= 1931 ; 1= 1932? ; 28= 1932 ; 3= 1933? ; 21= 1933 ; 1= 1934?? ; 3= 1934? ; 13= 1934 ; 1= 1935?? ; 1= 1935? ; 6= 1935 ; 3= 1936 ; 1= 1937 ; 1= 1938? ; 2= 1938 ; 3= 1939 ; 1= 1945?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):112
Literature "History of GEC and the Marconi Osram Valve"

Collection of

Christian ADAM (F)
Karlheinz Fischer (D)
Georg Richter (D)
Etienne Flemal (B)
Roy Johnson (GB)
Georges Werts (B)
 
marconims4b1_web.jpg

MS4B
 
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