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ID = 12977
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to S410
Similar Tubes
Normally replaceable-slightly different:
  4075SG ; B442 ; C150 ; CV1159 ; S409 ; SG410
Other base:
First year Oct.1928 - - Manufacturers Literature Date of Marconi Publication No. 520A.
First Source (s)
1929 : Saga of the Vacuum Tube, Tyne page 386
Successor Tubes CV1159   NR23  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =

This tube was listed in the Marconi Valves catalog No. 520, issued in September 1928.

Dimensions (WHD)
incl. pins / tip
x 132 x 45 mm / x 5.20 x 1.77 inch
Weight 58 g / 2.05 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Osram tube booklet March 1930
History of the British Radio Valve to 1940
S410: Eigenes Bild
Anonymous 971 Collector

S410: Telefunken Werkstattbuch
Wolfgang Bauer

Jose Casas-Avalos

from Just Qvigstad

Usage in Models 1= 1929 ; 17= 1931 ; 5= 1932

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):23

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