Antique radios, Old Time Radios
12SY7
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Country:
United States of America (USA)
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| Identical to |
12SY7
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| Similar
Tubes |
Other shape (e.g. bulb type):
12SY7GT
Different maximum ratings:
12SA7
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| First Source
(s) |
25.Sep.1945 : Electron Tube Registration List rec. 438
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line up.
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