Antique radios, Old Time Radios
A20B
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Country:
Great Britain (UK)
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| Identical to |
A20B
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| Similar
Tubes |
Normally replaceable-slightly different:
2D4A
Different connections:
AB1
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc)
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| Filament |
Vf 4 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC |
| Information source |
Babani, International Radio Tube Encyclopaedia p. 42 & 43
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 73, p. 100
Taschenbuch zum Röhren-Codex 1948/49
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A20B: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16
Collection of
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