Antique radios, Old Time Radios
LT1
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Country:
Great Britain (UK)
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Brand:
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| Tube type: |
Triode, vacuum Universal |
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| Identical to |
LT1
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| Similar
Tubes |
Other shape (e.g. bulb type):
DER
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| First year |
Mar.1921
History of the British Radio Valve to 1940 Thrower page 36
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| First Source
(s) |
1920 : Saga of the Vacuum Tube, Tyne Tyne, page 380
Jun.1920 : First examples of the valve
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Successor Tubes
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DER
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Filament |
Vf 1.8 Volts / If 0.4 Ampere / Direct / Battery = |
| Description |
The first British dull emitter valve. Thrower: "Initial samples of these were made in June 1920 and the first production quantities were produced in March 1921."
Text in other
languages (may
differ)
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| Tube prices |
1 Tube prices (visible for members
only)
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LT1: Fin Stewart
Fin Stewart
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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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