Antique radios, Old Time Radios
A257
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Country:
France
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| Identical to |
A257
= 57
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| Base |
6-Pin-Base U6A, old, USA
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
Dimensions (WHD)
incl. pins / tip |
x 123 x 39 mm / x 4.84 x 1.54 inch |
| Weight |
42 g / 1.48 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia p. 44 & 45
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 158, p. 220
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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A257: ARRL Handbook 1972
Anonymous 10 Collector
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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):1
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