Antique radios, Old Time Radios
281M
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Country:
United States of America (USA)
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| Identical to |
281M
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| Similar
Tubes |
Other class quality (otherwise equal):
81M
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 7.5 Volts / If 1.25 Ampere / Direct |
| Description |
Mercury vapor version of the 281 (UX281).
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Dimensions (WHD)
incl. pins / tip |
x 145 x 60 mm / x 5.71 x 2.36 inch |
| Weight |
63 g / 2.22 oz |
| Information source |
Tube Lore (II) p. 33
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Just Qvigstad
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