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E442

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ID = 1689
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to E442 = NC4 = H4100D = RS4142 = REN1204 = TM-C-EC = 5-442 = 4A2_Ultron
Similar Tubes
Other shape (e.g. bulb type):
  T5-442
Normally replaceable-slightly different:
  A4GAF ; ACSS4 ; AS494 ; DW6 ; Dn2004 ; IS3 ; J4091 ; MS4 ; NC4b ; S412N ; S4150 ; S4150 ; S430N ; TE42 ; W409
Other class quality (otherwise equal):
  4610
Other base:
  E442_4pin ; E442_UY
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Aug.1928 : -- Original-techn. papers.
1928 : Saga of the Vacuumtube, Tyne p.422

Base Europe 5-Pin (O5A, B5) (Codex=Fc) Top contact screw type
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC) /
Description Siehe die Unterschiede zur E442S (Kolben und elektrische Daten) - und auch die 4-Stift-Ausführung der E442. 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

  e442.gif
  E442: ficha de valvulas
Getulio Jimenez-Gomez
 
e442_philips_2.jpg
E442: Sammlung
Anonymous 557 Collector

 
9_10.png
E442: Telefunken Werkstattbuch
Wolfgang Bauer

 
e442_spec.png
E442: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1927 ; 1= 1928?? ; 1= 1928? ; 5= 1928 ; 4= 1929? ; 30= 1929 ; 5= 1930? ; 30= 1930 ; 4= 1931? ; 45= 1931 ; 34= 1932 ; 4= 1933? ; 6= 1933
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):170

E442*Box
   

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