Antique radios, Old Time Radios
PP220_Hivac
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Country:
Great Britain (UK)
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| Identical to |
PP220_Hivac
= VT20
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.2 Ampere / Direct / Battery = |
| Information source |
History of the British Radio Valve to 1940 p. 146 & 167
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 87, p. 122
L'ABCDaire des lampes de TSF des jeunes années
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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PP220_Hivac: rtt
Anonymous 10 Collector
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Just Qvigstad
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