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E438M

Information - Help 
ID = 3897
       
 
   
Tube type:  Triode, vacuum   Universal 
Identical to E438M
Similar Tubes
Normally replaceable-slightly different:
  MH4 ; REN904

Base Europe 5-Pin (O5A, B5)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description E438M is equivalent to MH4 (Marconi) and REN904. 
 
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E438M: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1931 ; 1= 1932

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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