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X30

Information - Help 
ID = 8719
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  HEPTODE   Frequency converter   Controlling (mu) 
Identical to X30
Similar Tubes
Normally replaceable-slightly different:
  TH13C

Base British-7-Pin, old (M7A) (Codex=Ne) Top contact with a cap.
Filament Vf 13 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   
 
x30.jpg
X30: Peter Hoddow
Peter Hoddow

 
165_5.png
X30: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Usage in Models 11= 1934 ; 1= 1935? ; 7= 1935 ; 4= 1936 ; 2= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):25


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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