Antique radios, Old Time Radios
S2_Ferranti
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Country:
Great Britain (UK)
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| Identical to |
S2_Ferranti
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| First Source
(s) |
16.Mar.1934 : Wireless World (The), London (WW, 79)
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Top contact screw type.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.15 Ampere / Direct / Battery = |
| Description |
Metallised
Limits: Va <150; Vg2 <70;
Typical Va=120, Vg2=60, Ia=2.3mA, Vg1=-1.0, ra=300kΩ, gm=1.1mA/V
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Just Qvigstad
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