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MS4B

Information - Help 
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
Similar Tubes
Other shape (e.g. bulb type):
  MS4B_Catkin
Normally replaceable-slightly different:
  MS4_UX ; T4500

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 / Parallel, (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   
Taschenbuch zum Röhren-Codex 1948/49   
 
marconims4b1_web.jpg
MS4B: CA
Christian ADAM

 
9_44~~1.png
MS4B: Telefunken Werkstattbuch
Wolfgang Bauer

 
ms4b_osram.png
MS4B: osram wireless guide 1931
Giuseppe Antonio Tusini


from Just Qvigstad

Usage in Models 2= 1929 ; 1= 1930 ; 19= 1931 ; 1= 1932? ; 28= 1932 ; 3= 1933? ; 21= 1933 ; 1= 1934?? ; 1= 1934? ; 12= 1934 ; 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):107


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