Tube-number record
HIGH SLOPE R.F. PENTODE
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BrandMullard
ClassPentode
Base7-pin (non-miniature)
Filament4 V @ 1.3 mA
Construction
Primary TypePentode
EnvelopeMetallised
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Grid 2 Voltage250 V
Grid 1 Voltage-1 V
Cathode Current20 mA
Audio Performance
Typical THD3.9%
Key Features
- High slope
- Indirectly heated
- Metallised bulb finish
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| H.F. or L.F. Amplifier | 200 V | 4730 | — | 6730 | 8 mA |
| Output Valve for CRT | 250 V | — | 750000 | — | 10.5 mA |
Application Notes
Specially designed for application in television receivers, suitable for general use including that of an output valve for modulating a cathode ray tube.
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