Antique radios, Old Time Radios
287A
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Country:
United States of America (USA)
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| Identical to |
287A
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| Similar
Tubes |
Heater different:
722A
; CE-722A
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| Base |
UY-Base, 5 Pins (USA, April 1927)
Top contact with a cap.
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| Filament |
Vf 2.5 Volts / If 7 Ampere / Direct |
| Description |
Mercury thyratron. Oxide coated filament; 2.5KV PIV, 640mA.
Continental, Hytron and WE known manufacturers. Replaces 277A.
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| Information source |
Tube Lore (I)
- - Manufacturers Literature
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287A
Emilio Ciardiello
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Just Qvigstad
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287A: own collection
Peter den Boer
More ...
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Collection of
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