Antique radios, Old Time Radios
U18/20
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Country:
Great Britain (UK)
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| Identical to |
U18/20
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| Predecessor Tubes |
U20_MOV
U18
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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 4 Volts / If 2.8 Ampere / Direct / Specified voltage AC/DC |
| Description |
Replaces the types U18 and U20.
Va <2.4kV with Ia <400mA peak with reservoir C 8µFor <1.4kV if Ia < 750mA peak with C 16µF.
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Dimensions (WHD)
incl. pins / tip |
56 x 135 x mm / 2.20 x 5.31 x inch |
| Information source |
- - Manufacturers Literature
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Just Qvigstad
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U18/20: own collection
Peter den Boer † 2025
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
Collection of a member from D |
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