radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

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
First Source (s)
1934 : History of the British Radio Valve to 1940 p. 147 & 198
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base British-7-Pin, old (M7A) (Codex=Ne) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source The Saga of Marconi Osram Valve   p. 28, 141 & 335
Babani, International Radio Tube Encyclopaedia   p. 120 & 121
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

mx40_rm.png
MX40: data sheet
Jacob Roschy

165_4.png MX40: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
mx40_spec.png
MX40: Marconi Advertisement
Anonymous 15 Collector

More ...
Usage in Models 2= 1933 ; 2= 1934? ; 13= 1934 ; 3= 1935? ; 20= 1935 ; 2= 1936? ; 16= 1936 ; 1= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):59

Collection of

 
mx40_045r.jpg

MX40
 

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]
  

Data Compliance More Information