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MX40

Information - Help 
ID = 2538
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old) 
Identical to MX40 = ACFC4
Similar Tubes
Normally replaceable-slightly different:
  RO4141
First Source (s)
1934 : History of the British Radio Valve to 1940

Base British-7-Pin, old (M7A) (Codex=Ne)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
  mx40_rm.png
  MX40: data sheet
Jacob Roschy
 
mx40_045r.jpg
MX40: Collection JR
Jacob Roschy

 
165_4.png
MX40: Telefunken Werkstattbuch
Wolfgang Bauer

 
mx40_spec.png
MX40: Marconi Advertisement
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 1= 1927? ; 2= 1933 ; 2= 1934? ; 13= 1934 ; 2= 1935? ; 20= 1935 ; 14= 1936 ; 1= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):55


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
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