Antique radios, Old Time Radios
OT1A
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Country:
United States of America (USA)
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| Identical to |
OT1A
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| Base |
UV-Base (4 Pins+Bayonet, USA 1914 WE)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 3 Volts / If 0.15 Ampere / Direct / Battery = |
| Description |
The O-T series of tubes were manufactured by the O-T Corp and not by the de Forest Telegraph and Telephone company. de Forest sued O -T for misuse of his company name and won the case. This is despite most tubes showing that the tubes were made for O - T. The advertisement in Radio News, March 1924 also carries the same erroneous informnation.
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Dimensions (WHD)
incl. pins / tip |
x 112 x 45 mm / x 4.41 x 1.77 inch |
| Weight |
50 g / 1.76 oz |
| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
-- Original prospect or advert
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OT1A: Fin Stewart
Fin Stewart
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Just Qvigstad
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Collection of
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line up.
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