Tube-number record
RK-35
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RK-35 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Raytheon, construction Triode, base Isolantite, socket 4-pin, maximum plate voltage 1500 V, and maximum plate dissipation 50 W. The archive does not yet hold a photographed example of this type.
BrandRaytheon
ClassTriode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialIsolantite
SectionsSingle
Filament / Heater
MaterialTantalum
Absolute Maximum Ratings
Plate Voltage1500 V
Plate Dissipation50 W
Cathode Current125 mA
Audio Performance
Key Features
- Tantalum plate
- Tantalum grid
- Isolantite base
- High frequency operation up to 120 megacycles
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R-F Power Amplifier or Oscillator - Class C Telegraphy | 1500 V | — | — | 9 | 115 mA |
| R-F Power Amplifier - Class C Telephony - Plate Modulation | 1250 V | — | — | — | 100 mA |
Application Notes
The RK-35 may be operated at maximum ratings at frequencies up to 60 megacycles. At frequencies between 60 and 120 megacycles, maximum D-C plate voltage should not exceed 1000 volts. Above 120 megacycles, it should not exceed 750 volts. At least 170 volts of fixed bias should be used at 1500V plate for protection.
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