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H125D

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ID = 12742
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to H125D = C142
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
1928 : Valvo-Berichte

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 1 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
L'ABCDaire des lampes de TSF des jeunes années   p. 15

h125d_so.png H125D: rtt
Anonymous 10 Collector


Just Qvigstad
h125d_daten_kennl.png
H125D: Valvo Daten Heft 1930
Trev Levick

 

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