Tube-number record
PCF805
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BrandBrimar
ClassTriode Pentode
BaseNoval (B9A)
Filament7.4 V @ 0.3 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Base MaterialCeramic (holder note)
Sections2
Filament / Heater
Heater NotesSeries string operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2 W
Grid 2 Voltage230 V
Cathode Current18 mA
H-C Voltage200 V
Audio Performance
Key Features
- Variable mu pentode
- Frame grid construction
- High gain controlled I.F. amplifier following U.H.F. tuner
- Basing arranged to minimise pentode cathode lead inductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Characteristics | 125 V | 11000 | — | 50 | 10 mA |
| Triode Characteristics | 100 V | 5500 | — | 17 | 14 mA |
| Pentode as I.F. Amplifier | 125 V | 15200 | — | — | 13.2 mA |
Application Notes
The pentode section is intended for use as a variable gain V.H.F. frequency changer or high gain controlled I.F. amplifier.
Datasheets
Datasheet: PCF805.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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