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H410D

Country:  Germany      Brand:  Valvo Radioröhrenfabrik GmbH; Hamburg 
  Tube type:  Screen-grid Tetrode 
Tube ID = 12748
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Identical to H410D
Similar Tubes Normally replaceable-slightly different:
 S409
First year   1930 Tube leaflet collection E.Erb Analysis by original leaflets
Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Er) Top contact screw type
Filament Vf 4 Volts / If: 0.1 Ampere / -: Direct /
Tube prices 2 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

h410d_2.jpg
H410D: P.ST
Peter Steffen
 
Variants
 
3_9.png
H410D: Telefunken Werkstattbuch
Wolfgang Bauer
 
h410d_spec.png
H410D: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
Usage in Models   1= 1933 ; 1= 1940??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   2

  Variants


Röhrensammlung
Wolfgang Bauer
H410D*5-Stift Europa-Sockel

H410D wurde auch mit 5-poligem Sockel gefertigt; am Mittelstift soll die Abschirmung angeschlossen sein.

30.Jan.2010 Michael Mischke

  
   
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