Antique radios, Old Time Radios
309A
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Country:
United States of America (USA)
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| Identical to |
309A
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| Base |
UY-Base, 5 Pins (USA, April 1927)
Top contact with a cap.
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| Filament |
Vf 10 Volts / If 0.32 Ampere / Indirect |
| Description |
Variable mu pentode, 1.1 mS Gm. Similar to 39/44. Silver-plated pins.
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| Information source |
Tube Lore (I)
- - Manufacturers Literature
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309A: From my schematic collection.
Pier Antonio Aluffi
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Just Qvigstad
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309A: My schematic collection.
Pier Antonio Aluffi
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Collection of
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