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215SG

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ID = 12420
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Screen-grid Tetrode   Audio Frequency 
Identical to 215SG = CV1018 = VR18
Similar Tubes
Normally replaceable-slightly different:
  215SG_Cossor ; B262 ; E432
Other characteristic (electr. data):
  VW48
Heater different:
  CV1048
Different connections:
  215SG_Cleartron
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

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 2 Volts / If 0.18 Ampere / Direct
Information source History of the British Radio Valve to 1940   p. 148 & 183
Babani, International Radio Tube Encyclopaedia   p. 28 & 29
Taschenbuch zum Röhren-Codex 1948/49

3_17.png 215SG: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
215sg_techdat01.png
215SG: Early Valves 1930
Peter Hoddow

More ...
Usage in Models 1= 1927 ; 2= 1931 ; 4= 1933 ; 4= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of

Collection of a member from D
 
215sg_mazda_bild2.jpg

215SG
 

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