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TE554

Information - Help 
ID = 13097
       
Country:
Great Britain (UK)
Brand: Dario - Impex Electrical Ltd. (see also Dario France); London
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to TE554
Similar Tubes
Normally replaceable-slightly different:
  ACVS4 ; MM4V
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect
Description

This tube is a variable mu type.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 146 & 147
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 179, p. 310
Taschenbuch zum Röhren-Codex 1948/49
L'ABCDaire des lampes de TSF des jeunes années


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