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NF4

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ID = 10167
       
Country:
Germany
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to NF4

Base SPECIAL TUBEBASE in general (Codex=sp)
Was used by Military and/or Government
Filament Vf 12.6 Volts / If 0.195 Ampere / Indirect / Parallel / series AC/DC
Tube prices 4 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
nf4_a.jpg
NF4: scc
Christian Schaufelberger

 
s_149_g.gif
NF4: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 
nf4_data.png
NF4: Telefunken
Robert Schmalstieg


Usage in Models 2= 1936?? ; 1= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3


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