Antique radios, Old Time Radios
HD23
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Country:
Great Britain (UK)
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| Identical to |
HD23
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| First year |
Aug.1938
Wireless World (The), London (WW, 79) show report
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fp)
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| Filament |
Vf 2 Volts / If 0.15 Ampere / Direct / Battery = |
| Description |
Va<150, Gm=1.4mA/V at Ia =1.7mA
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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HD23: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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HD23: MARCONI RECEIVING VALVES, LONDON, 1938
Jose Casas-Avalos
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6
Collection of
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