Antique radios, Old Time Radios
PT250
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Country:
Great Britain (UK)
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| Identical to |
PT250
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.5 Ampere / Direct / Battery = |
| Description |
Pa <10W, Va=Vg2 <250;
Typ ia=40mA, Ig2=7mA, Vg1=-15, Rload=7k, Pout= 2.5W
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| Information source |
Wireless World (The), London (WW, 79) November 22, 1935
Wireless World (The), London (WW, 79) Nov 1934
History of the British Radio Valve to 1940
Taschenbuch zum Röhren-Codex 1948/49
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PT250: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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