Antique radios, Old Time Radios
S522M
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Country:
France
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| Identical to |
S522M
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| Filament |
--/-- |
| Description |
Minimum striking voltage 170 V, 6/8 mA
Dimensions of numbers: 25 x 50 mm
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| Information source |
-- Original prospect or advert Electronic Engineering, vol. 34, May 1962, p. 346
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