Antique radios, Old Time Radios
1A_Amptrol
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Country:
United States of America (USA)
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| Identical to |
1A_Amptrol
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| Similar
Tubes |
Other base:
1A_Amperite
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| Base |
Edison (candelabra) 12 mm
Other combinations of connections.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Direct / Battery = |
| Description |
Amptrol .25 amp current regulator for use with 5 volt American tubes such as the 201A. Other tubes were made in this series for other tube voltages and currents. Tubes manufactured by Micromold Radio Corporation, Brooklyn New York USA.
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Dimensions (WHD)
incl. pins / tip |
12 x 47 x mm / 0.47 x 1.85 x inch |
| Weight |
10 g / 0.35 oz |
| Information source |
- - Manufacturers Literature Undated data sheet for all models.
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1A_Amptrol: Fin Stewart collection
Fin Stewart
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Collection of
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