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H125D

Information - Help 
ID = 12742
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; 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 (A, 4A, B4, since 1914) (Codex=Er)
Was used by Radio/TV-reception etc.
Filament Vf 1 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
h125d_so.png
H125D: rtt
Michael Schlör

 
h125d_daten_kennl.png
H125D: Valvo Daten Heft 1930
Trev Levick


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