Tube-number record
RK-37
0 archive entries
RK-37 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
EnvelopeHard Glass
Base MaterialIsolantite
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R-F Power Amplifier or Oscillator - Class C Telegraphy | 1500 V | — | — | — | 115 mA |
| R-F Power Amplifier - Class C Telephony (Plate Modulation) | 1250 V | — | — | — | 100 mA |
| R-F Power Amplifier - Class C Telephony (Grid Modulation) | 1500 V | — | — |
Application Notes
The RK-37 can be operated at maximum ratings up to 60 megacycles. For frequencies between 60 and 120 megacycles, plate voltage should not exceed 1000V. Above 120 megacycles, plate voltage should not exceed 750V. At least 35V of fixed bias is recommended at 1500V plate voltage for protection.
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