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PM2DX

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ID = 14615
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Triode, vacuum   Audio Frequency 
Identical to PM2DX = TB172
Similar Tubes
Normally replaceable-slightly different:
  CV3645 ; K30E ; LD210
Other base:
  PM2DX_UX
First Source (s)
1929 : History of the British Radio Valve to 1940 p. 165
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Battery =
Description

Medium impedance Triode.
Designed for AF amplification and driving. Earlier data states that it was primarily designed as a high sensitivity detector and quotes a filament current of 0.2A.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 128 & 129
- - Manufacturers Literature   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
1_107.png PM2DX: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		pm2dx_dat.png
PM2DX: Everyman's Wireless1934, page141
Otto Frosinn
Usage in Models 1= 1928 ; 1= 1929?? ; 1= 1929? ; 2= 1929 ; 3= 1930 ; 3= 1931? ; 1= 1931 ; 1= 1932?? ; 1= 1932? ; 9= 1932 ; 1= 1933?? ; 2= 1933? ; 3= 1933 ; 1= 1934? ; 5= 1934 ; 1= 1935 ; 1= 1936 ; 2= 1937 ; 1= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):40

Collection of

Gwyn Griffiths (GB)
Ottó Jancsek (H)
Sinisa Trlin (HR)
Rudolf Osterkamp (D)
Collection of a member from D
 
pm2dx_mullard.jpg

PM2DX
 
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