Antique radios, Old Time Radios
3J/221E
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Country:
Great Britain (UK)
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| Identical to |
3J/221E
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| Filament |
If 70 Ampere / Direct |
| Description |
Forced-air cooled triode, integral radiator. 20KW plate dissipation at 2000 cu. ft/min. Tungsten filament, 12A peak emission.
17.5KV, 2.5A max plate at 22MHz. 1.2KW grid dissipation.
22V approximate filament voltage, actual value printed on bulb.
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Dimensions (WHD)
incl. pins / tip |
x 520 x 302 mm / x 20.47 x 11.89 inch |
| Weight |
8150 g / 287.48 oz |
| Information source |
-- Original-techn. papers.
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