Antique radios, Old Time Radios
228
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Country:
United States of America (USA)
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| Identical to |
228
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| Similar
Tubes |
Other class quality (otherwise equal):
227
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| Base |
UY-Base, 5 Pins (USA, April 1927)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1.75 Ampere / Indirect / Specified voltage AC/DC |
| Description |
The 228 is a High Mu a/c tube designed to improve performance of radios when replacing a 227. It is not suitable as a radio frequency amplifier.
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Dimensions (WHD)
incl. pins / tip |
x 108 x 45 mm / x 4.25 x 1.77 inch |
| Weight |
47 g / 1.66 oz |
| Information source |
Tube Lore (II) Page 30
-- Original prospect or advert
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