Antique radios, Old Time Radios
407A
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Country:
United States of America (USA)
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| Identical to |
407A
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| Similar
Tubes |
Different maximum ratings:
407B
Multiple differences or of other kind:
TR1005
|
| Base |
Noval, 9 pin miniature (USA pico-9) B9A (Codex=Eo)
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| Filament |
Vf 40 Volts / If 0.05 Ampere / Indirect |
| Description |
Miniature twin triode, for use in carrier repeater equipment having heaters and plate series supplied through cable pairs. Heater can be connected for 20V, 100mA operation.
GE, RCA, Sylvania, WE known suppliers.
Text in other
languages (may
differ)
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Essential Characteristics, GE 1973
Tube Lore (I)
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407A: Sylvania Data Sheet
Egon Penker
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Just Qvigstad
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407A: Sylvana Data Sheet
Egon Penker
More ...
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Collection of
| Documents about this component |
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