F-342-A
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BrandFederal Telephone and Radio Corporation
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeWater-cooled anode
SectionsSingle
Filament / Heater
MaterialPure tungsten
Absolute Maximum Ratings
Plate Voltage20000 V
Plate Dissipation25000 W
Grid 1 Voltage-5000 V
Cathode Current13.5 mA
Audio Performance
Power Output30000 W
Key Features
- Water-cooled anode
- Pure tungsten filament
- Three-electrode design
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Audio-Frequency Power Amplifier and Modulator Class B | 15000V | - | 9600 | 40 | 3200mA |
| Radio-Frequency Power Amplifier Class B (Carrier) | 17500V | - | - | - | 1550mA |
| Plate-Modulated Radio-Frequency Power Amplifier Class C Telephony | - | - | - | - | 1000mA |
| Radio-Frequency Power Amplifier and Oscillator Class C Telegraphy | 18000V | - | - | - | 2600mA |
Application Notes
Designed for use as a radio-frequency amplifier, oscillator, or Class B modulator. Ratings apply up to 4 megacycles. Operation up to 16 megacycles is permissible if plate voltage and input are reduced to 50%.
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