Tube-number record
OA4-G
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OA4-G is a tube type in the TubeDatabase archive (class: Gas Triode). Recorded specifications: brand RCA, construction Other / special, base Phenolic, and socket Octal. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassGas Triode
BaseOctal
Construction
Primary TypeOther / special
EnvelopeST-12
Base MaterialPhenolic
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Cathode Current25 mA
Audio Performance
Key Features
- Cold-cathode
- Glow-discharge
- Starter-anode
- Remote control via R-F over power line
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Relay Service (A-C Supply) | 117.5 V | — | — | — | — |
Application Notes
Used as a relay tube, voltage regulator, or relaxation oscillator. In relay service, discharge is initiated by an R-F signal added to the bleeder potential of the starter-anode.
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