DET 3
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BrandMarconi
ClassTransmitting Triode
BaseDirect Lead Connections
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialNot Specified
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation250 W
Audio Performance
Key Features
- Thoriated tungsten filament
- Direct leads (10 inches long)
- High power transmitter application
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class C Telegraphy | 3000V | 6000 | 3166.67 | 19 | 300mA |
| RF Amplifier Class C Grid Modulated | 3000V | 6000 | 3166.67 | 19 | 130mA |
| RF Amplifier Class C Anode Modulated | 2400V | 6000 | 3166.67 | 19 | 230mA |
| RF Power Amplifier Class B Telephony | 3000V | 6000 | 3166.67 | 19 | 120mA |
Application Notes
The valve must be mounted vertically with the anode seal either up or down. Designed for use at frequencies up to 3 Mc/s.
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