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ID = 2506
Country:  Netherlands      Brand: Philips; Eindhoven (tubes international!); Netherlands
  Developer:  Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
  Tube type:  HEXODE   RF/IF-Stage   Controlling (mu) 
Identical to E449 = X4123 = RENS1234 = FH4105 = NSS44 = TE49
Similar Tubes Normally replaceable-slightly different:
First year   1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s) Apr.1933 : Philips Bulletin #D6
Successor Tubes AH1  

Base Europe 7-Pin (C7A, C, 1933) (Codex=La)
Filament Vf 4 Volts / If 1.2 Ampere / Indirect /
Literature Taschenbuch zum Röhren-Codex 1948/49   

  E449: ficha de valvulas
Getulio Jimenez-Gomez
E449: Patrice ZEISSLOFF
Patrice Zeissloff

E449: Telefunken Werkstattbuch
Wolfgang Bauer

E449: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models 1= 1931 ; 1= 1932 ; 11= 1933 ; 7= 1934 ; 3= 1935 ; 2= 1939
Number of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):25


My tubes


own collection
Peter den Boer
E449*top contact screw type.

Dimensions W x H x D = 49 x 155 x 35 mm.

12.Dec.2011 Peter den Boer


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