Antique radios, Old Time Radios
407A
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Country:
United States of America (USA)
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| Identical to |
407A
|
| Similar
Tubes |
Different maximum ratings:
407B
Multiple differences or of other kind:
2C51
; 396A
; 5670
; TR1005
|
| First Source
(s) |
15.Dec.1947 : -- Collector info (Sammler)
|
| Base |
Noval, 9 pin miniature (USA pico-9) B9A (Codex=Eo)
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| Was used by |
Telephony |
| Filament |
Vf 40 Volts / If 0.05 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Miniature twin triode, designed for use in carrier repeater equipment 9-B & #-2 telegraph boards.
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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| Tube Tester Data |
Avo CT160 |
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407A: Sylvania Data Sheet
Egon Penker
|
Just Qvigstad
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407A: Sylvana Data Sheet
Egon Penker
More ...
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Collection of
Collection of a member from CDN
| Documents about this component |
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