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MS4B_Catkin

Information - Help 
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
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 / Parallel, (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
 
ms4b_marconi.jpg
MS4B_Catkin: My tubes
Anonymous 413 Collector

 
9_44_1.png
MS4B_Catkin: Fin Stewart
Fin Stewart

 
ms4b_spec.png
MS4B_Catkin: Marconi Advertisement
Anonymous 15 Collector


from Just Qvigstad

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


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