Tube-number record
8025-A
0 archive entries
8025-A is a tube type in the TubeDatabase archive (class: U-H-F Transmitting Triode). Recorded specifications: brand RCA, construction Triode, base Micanol, socket 4-pin, maximum plate voltage 1000 V, and maximum plate dissipation 40 W. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassU-H-F Transmitting Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMicanol
SectionsSingle
Filament / Heater
MaterialThoriated-tungsten
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Telegraphy | 1000 V | — | — | 18 | 50 mA |
| Plate-Modulated Class C Telephony | 800 V | — | — | 18 | 40 mA |
| Grid-Modulated Class C Telephony | 1000 V | — | — | 18 |
Application Notes
Designed for use at ultra-high frequencies up to 500 MHz at full ratings. The center-tapped filament arrangement minimizes lead inductance effects.
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