Tube-number record
1946
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BrandRCA
ClassVacuum-Gauge Tube
Filament1 V @ 70 mA
Construction
Primary TypeOther / special
EnvelopeT12
Filament / Heater
Heater NotesApproximate voltage range for thermocouple heater
Absolute Maximum Ratings
Audio Performance
Key Features
- Thermocouple type vacuum gauge
- Hard Glass construction
- Directly heated thermocouple element
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Calibration | — | — | — | — | 70 mA |
Application Notes
Measured from bulb end to bulb-top line as determined by ring gauge of 1/2" I.D. Brown heater lead should be connected to positive terminal of DC heater supply.
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