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MS4B_Catkin

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ID = 10153
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to MS4B_Catkin
Similar Tubes
Other shape (e.g. bulb type):
  MS4B
First year 1933 -- Original-techn. papers. Models with date.
First Source (s)
Nov.1935 : Wireless World (The), London (WW, 79)
Predecessor Tubes MS4  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Specified voltage AC/DC
Description

Achtung: Der Röhren-Codex gibt fälschlicherweise Pentode an!
Catkin Röhren hatten verbesserte Konstruktion: kleiner, zuverlässiger, klingarm. Sie konnten mit einer steckbaren Metallhülse abgeschirmt werden. Steiler als die MS4.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   Babani, Tube Encyclopedia
History of the British Radio Valve to 1940
The Saga of Marconi Osram Valve
9_44_1.png MS4B_Catkin: Fin Stewart
Fin Stewart

Just Qvigstad 		ms4b_spec.png
MS4B_Catkin: Marconi Advertisement
Anonymous 15 Collector
Usage in Models 1= 1933? ; 3= 1933 ; 1= 1934
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Michael Mischke (D)
Timo Rantasaari (FIN)
Collection of a member from FIN
Yang Fangzhou (PRC)
Wolfgang Bauer (A)
 
ms4b_marconi.jpg

MS4B_Catkin
 
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