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4K170

Information - Help 
ID = 15226
       
Country:
Germany
Brand: TeKaDe (TKD), Süddeutsche Telefon-Apparate- Kabel- und Drahtwerke; Nürnberg
Tube type:  Triode, vacuum   Power/Output 
Identical to 4K170 = 73402
Similar Tubes
Normally replaceable-slightly different:
  KL73404
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Mar.1929 : Funk Bastler Heft 11, 1929

Base 4-sockets Europe (Codex=Eo)
Filament Vf 4 Volts / If 1.7 Ampere / Direct / Parallel, (AC/DC)
Tube prices 4 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
roehre_4k170_bild_2.jpg
4K170: Eigenes Bild
Anonymous 971 Collector

 
d_tekade_4k170_europa_buchsen.png
4K170: 25 Jahre Telefunken
Wolfgang Eckardt

 
4k110_4k170_dat~~1.png
4K170: Röhren-Handbuch 1995 Franzis-Verlag
Heinz Höger



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