Antique radios, Old Time Radios
APP4As
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Country:
Hungary
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| Identical to |
APP4As
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| Similar
Tubes |
Other base:
APP4A
; APP4A_5PIN
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| Base |
Europe side contact P8A (Au P, 8SC) (Codex=Sfo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2 Ampere / Indirect / Specified voltage AC/DC |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices p. 406
Babani, International Radio Tube Encyclopaedia
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APP4As: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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APP4As: My schematic collection.
Pier Antonio Aluffi
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