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MEM4

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ID = 88192
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Mag. Eye, 2 ranges, 2 shadow angles   Indication 
Identical to MEM4 = CV1434 = EM4
Similar Tubes
Normally replaceable-slightly different:
  EM4N ; EM5 ; WE12
Other base:
  EM34
First Source (s)
Dec.1938 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Jul.1939 : Philips Bulletin
Predecessor Tubes EM1   AM1   EFM1  
Successor Tubes 1946   EM34   EM71  

Base Europe side contact P8A (Au P, 8SC)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Description

Rote Serie

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
28 x 78 x mm / 1.10 x 3.07 x inch
Information source British Radio Valves - The Classic Years: 1926-1946   Supplement, p. 153
Babani, International Radio Tube Encyclopaedia   p. 323
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

du002.png MEM4: Manufacturer's data
Tomasz Szczesniak


Just Qvigstad

Collection of

 
mem4_1.jpeg

 

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