Antique radios, Old Time Radios
C509A_B4
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Country:
Netherlands
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| Identical to |
C509A_B4
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| Similar
Tubes |
Other base:
C509A
; UX201A
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| First Source
(s) |
Aug.1930 : Philips Bulletin Philips Radiolampen equivalents1164, p. 12
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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 5 Volts / If 0.25 Ampere / Direct |
| Information source |
Röhren-Vademecum; P.H. Brans; Antwerpen p. 21
Universal Vade-Mecum, Electron Valves and Semiconductor Devices section 116, p. 150
Babani, International Radio Tube Encyclopaedia
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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Just Qvigstad
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Collection of
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