Antique radios, Old Time Radios
FER1_4Volt
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Country:
Great Britain (UK)
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| Identical to |
FER1_4Volt
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| Similar
Tubes |
Heater different:
FER1_6Volt
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| First year |
1925
??
Saga of the Vacuum Tube, Tyne page 392
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| First Source
(s) |
1925 : British Radio Valves - The Vintage Years, Thrower p.51 & 158
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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 0.1 Ampere / Direct / Battery = |
| Description |
Louden valves were marketed by Fellows Magneto Co. Ltd. from 1924 to 1927. Some Louden designations used were F1 and F2 for bright emitters; FER1, FER2 are the corresponding dull emitter tubes having thoriated filaments.
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| Information source |
Saga of the Vacuum Tube, Tyne page 392
Wireless World (The), London (WW, 79) June 24th 1925 p652
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FER1_4Volt: Fin Stewart
Fin Stewart
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FER1_4Volt: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
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from Just Qvigstad
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