Antique radios, Old Time Radios
7728
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Country:
United States of America (USA)
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| Identical to |
7728
|
| Similar
Tubes |
Other class quality (otherwise equal):
12AT7
; ECC81
|
| First Source
(s) |
04.Jul.1960 : Electron Tube Registration List
|
| Base |
Noval, 9 pin miniature (USA pico-9) B9A
|
| Was used by |
Technology / Measurement |
| Filament |
Vf 12.6 Volts / If 0.15 Ampere / Indirect |
| Description |
Premium 12AT7. Industrial or instrument service.
Center tapped heater allows operation from either 6.3 V or 12.6 V heater supply.
CBS - Hytron design
Text in other
languages (may
differ)
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| Tube prices |
1 Tube prices (visible for members
only)
|
| Information source |
Essential Characteristics, GE 1973
Röhren-Taschen-Tabelle, (Franzis RTT)
Tube Lore (I)
- - Manufacturers Literature
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7728: RTT Schwandt
Günther Stabe † 19.8.20
More ...
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Just Qvigstad
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7728: Manufacturer's Literature
Emilio Ciardiello
More ...
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