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W1_Cossor

Information - Help 
ID = 28913
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Triode, vacuum   Audio Frequency 
Identical to W1_Cossor
Similar Tubes
Heater different:
  WR1
First year May.1925 Saga of the Vacuumtube, Tyne page 375
First Source (s)
1924 : 1925 Brown Brothers Catalog 217
1925 : British Radio Valves - The Vintage Years, Thrower p.49

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 1.8 Volts / If 0.3 Ampere / Direct / Battery =
Description "Wuncell" type. 
Tube prices 1 Tube prices (visible for members only)
Literature Saga of the Vacuumtube, Tyne   1925 Brown Brothers Catalog 217
 
cossor_w1_bild2.jpg
W1_Cossor
Rudolf Osterkamp

 
w1_cossor_spec.png
W1_Cossor: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector



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