Antique radios, Old Time Radios
U9
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| Identical to |
U9
|
| First year |
1930 70 Years of Radiotubes and V. |
|
| Base |
Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
|
| Filament |
Vf 4 Volts / If: 1 Ampere / -: Direct / |
| Description |
This was one of the first British Rectifier to have an oxide-coated filament. 250V, 75mA.
Listed in the Marconi catalog No. 520, Sept. 1928.
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
70 Years of Radiotubes and V.
- - Manufacturers Literature
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U9: Patrice ZEISSLOFF
Patrice Zeissloff
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U9: Manufacturer's Literature
Emilio Ciardiello
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| Usage in Models |
1= 1929 |
| Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 1 |
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