4058
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BrandRCA
ClassMedium-Mu Triode
BaseGrayhill No. 22-34
Filament6V @ 300mA
Construction
Primary TypeTriode
EnvelopeGlass-Metal Pencil
Sections1
Filament / Heater
Heater NotesUnder standby condition 6.3V max
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation13 W
Grid 1 Voltage-100 V
Cathode Current70 mA
H-C Voltage50 V
Audio Performance
Key Features
- Pencil Type
- Pulse Service to 4000 Mc/s
- CW Service to 2000 Mc/s
- Medium-Mu
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class C (CCS) | 342V | 7800 | - | 40 | 50mA |
| Plate-Pulsed Oscillator | 2000V | - | - | - | 30mA |
Application Notes
In applications where plate dissipation exceeds 3 watts, a large area of contact must be provided between the plate cylinder and connector for adequate heat conduction.
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