Antique radios, Old Time Radios
E273
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Country:
Great Britain (UK)
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| Identical to |
E273
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Successor Tubes
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MY224
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| Base |
UY-Base, 5 Pins (USA, April 1927)
Top contact with a cap.
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| Was used by |
Prototype only, no series built |
| Filament |
Vf 2.5 Volts / If 1.75 Ampere / Indirect |
| Description |
Experimental American UY224 tube. m=440; R=440,000; m/R=1; ef=2.5;If=1.75; Capacity 01 micromicrofarads. Developed at the Hirst Research Centre of GEC. Later to become the MY224.
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| Information source |
-- Collector info (Sammler) Undated list of experimental MOV tubes.
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Just Qvigstad
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