Tube-number record
1949
0 archive entries
1949 is a tube type in the TubeDatabase archive (class: Vacuum-Gauge Tube). Recorded specifications: brand RCA, year 1947, construction Other / special, base Hard-Glass (Corning Code 772 Nonex), socket Flexible / flying leads, maximum plate voltage -100 V, and maximum plate dissipation 150 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassVacuum-Gauge Tube
BaseFlexible / flying leads
Construction
Primary TypeOther / special
EnvelopeT-16
Base MaterialHard-Glass (Corning Code 772 Nonex)
SectionsTriode-like structure with dual filaments (one spare)
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation (Low Sensitivity) | -22.5 V | — | — | — | — |
| Operation (Medium Sensitivity) | -22.5 V | — | — | — | — |
| Operation (High Sensitivity) | -22.5 V | — | — | — |
Application Notes
Contains two filaments; values shown are for either filament operated alone. Filament voltage should be kept as low as possible during degassing to increase filament life.
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