ACT 9
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BrandMarconi
ClassTransmitting Triode
BaseCustom / Stud mounting
Construction
Primary TypeTransmitting Triode
EnvelopeGlass with external radiator
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage10000 V
Plate Dissipation1100 W
Cathode Current400 mA
Audio Performance
Key Features
- Air-cooled
- Tungsten filament
- Supports forced air cooling for higher dissipation
- Suitable for frequencies up to 80 Mc/s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 10000V | 3100 | 13000 | 40 | 380mA |
| Class B Telephony | 10000V | 3100 | 13000 | 40 | 160mA |
Application Notes
Valve must be mounted vertically with anode uppermost. Convection cooling is adequate for dissipation up to 800W with 12 inch clearance. Forced air cooling (10 cu. ft./min) allows dissipation up to 1,100W.
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