Tube-number record
6697A
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BrandEimac
ClassPower Triode
BaseCoaxial
Construction
Primary TypeTriode
EnvelopeCeramic-Metal
Sections1
Filament / Heater
MaterialThoriated-Tungsten
Absolute Maximum Ratings
Plate Voltage16000 V
Plate Dissipation35000 W
Grid 1 Voltage-3200 V
Cathode Current11000 mA
Audio Performance
Power Output110000 W
Key Features
- Forced-air cooled
- Ceramic-metal construction
- Thoriated-Tungsten filament
- High power AM/Industrial service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class-C Telegraphy | 15000 V | — | — | 20 | 7000 mA |
| Class-C Plate-Modulated | 9500 V | — | — | 20 | 8400 mA |
| Class-AB Audio (Two Tubes) | 10000 V | — | — | 20 | 17400 mA |
Application Notes
Maximum ratings apply up to 40 Mc. Useful output to 80 Mc at reduced ratings. Requires vertical mounting, anode down.
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