Antique radios, Old Time Radios
EC21_9pin
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Country:
Netherlands
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| Identical to |
EC21_9pin
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| Similar
Tubes |
Other base:
EC21
|
| Base |
Loctal-9-Pin (B9G)
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| Filament |
Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania.
Text in other
languages (may
differ)
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| Information source |
- - Manufacturers Literature
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|
EC21_9pin: original Philips documents
Jacob Roschy
|
Just Qvigstad
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EC21_9pin: original Philips documents
Jacob Roschy
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