RK-33
0 Tubes in archive
BrandRaytheon
ClassTwin Triode
BaseIsolantite base
Filament6.3V @ 600mA
Construction
Primary TypeTwin Triode
EnvelopeGlass
Base MaterialIsolantite
Sections2
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.5 W
Cathode Current20 mA
Audio Performance
Key Features
- Twin Triode Amplifier/Oscillator
- Isolantite Base
- Heater type
- Designed for independent triode operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| A-F Amplifier - Class A (One Triode) | 250V | 1200 | 8750 | 10.5 | 8mA |
| R-F Power Amplifier - Class C - Telegraphy (One Triode) | 250V | - | - | - | 20mA |
Application Notes
The RK-33 is designed for use in circuits where but one triode is operated at maximum ratings. One triode may be operated as a Class C amplifier or oscillator while the other is used as a low power oscillator, amplifier or detector. At least 15 volts of fixed bias is recommended to protect the tube in case of excitation failure.
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