radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

SG220

Information - Help 
ID = 13014
       
Country:
Great Britain (UK)
Brand: Hivac Ltd.; Harrow-on-the-Hill
Developer: Hivac Ltd.; Harrow-on-the-Hill 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to SG220
Similar Tubes
Different connections:
  SG220SW
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 with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
History of the British Radio Valve to 1940   p. 184


Just Qvigstad
 
sg220_hivac.jpg

 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg