Tube-number record
RK-100
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BrandRaytheon
ClassGaseous Discharge Triode
Base6-pin
Filament6.3 V @ 900 mA
Construction
Primary TypeTriode
EnvelopeST
SectionsSingle
Filament / Heater
Heater NotesHeater type gaseous discharge tube containing mercury vapor.
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation15 W
Cathode Current250 mA
Audio Performance
Typical THD10%
Power Output4.2 W
Key Features
- Mercury vapor filling
- Auxiliary ionizing grid (Grid 1)
- High transconductance
- Virtual cathode
- Low internal impedance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| A-F Power Amplifier - Class A Single Tube | 110 V | 16000 | 2500 | 40 | 65 mA |
| A-F Power Amplifier - Class A Single Tube (Alt) | 140 V | 12000 | 3600 | 40 | 50 mA |
| R-F Oscillator - Class C | 110 V | — | — | — |
Application Notes
Contains mercury vapor and an auxiliary grid (number one grid) which acts as an anode for ionizing discharge and as a virtual cathode for the amplifier section. A 15-minute warm-up is required on first use to ensure mercury distribution.
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