Tube-number record
RF PENTODE
0 archive entries
RF PENTODE is a tube type in the TubeDatabase archive (class: Transmitting Tube). Recorded specifications: brand Standard Valves, construction Pentode, base Special British 7-pin, socket 7-pin (non-miniature), maximum plate voltage 1250 V, and maximum plate dissipation 50 W. The archive does not yet hold a photographed example of this type.
BrandStandard Valves
ClassTransmitting Tube
Base7-pin (non-miniature)
Filament10 V @ 1300 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialSpecial British 7-pin
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated oxide coated, Constant voltage type
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Measurement | 1000 V | 4500 | — | — | — |
| Class C Amplifier Unmodulated | 1200 V | — | — | — | 77 mA |
| Class C Amplifier Suppressor Grid Modulated | 1200 V | — | — | — |
Application Notes
Top cap type B connection for anode. Suppressor grid can be modulated for carrier output.
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