Antique radios, Old Time Radios
7729
|
Country:
United States of America (USA)
|
|
| Identical to |
7729
|
| Similar
Tubes |
Multiple differences or of other kind:
12AX7
; ECC83
|
| First Source
(s) |
04.Jul.1960 : Electron Tube Registration List
|
| Predecessor Tubes |
12AX7
|
| 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 quality 12AX7 intended for industrial or instrument service. Gold-plated pins, low hum and microphony.
Center tapped heater allows operation from either 6.3 V or 12.6 V heater supply
Text in other
languages (may
differ)
|
| Information source |
Essential Characteristics, GE 1973
Röhren-Taschen-Tabelle, (Franzis RTT)
Tube Lore (I)
- - Manufacturers Literature
|
|
7729: RTT Schwandt
Günther Stabe † 19.8.20
|
Just Qvigstad
|
7729: Manufacturer's Literature
Emilio Ciardiello
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