Tube-number record
14R7
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BrandGeneral Electric
ClassDuplex-Diode Pentode
BaseLoctal
Filament12.6 V @ 150 mA
Construction
Primary TypeMulti-section
EnvelopeT-9 Glass
SectionsDuplex-Diode, Semi-remote-cutoff pentode
Filament / Heater
Heater NotesCoated Unipotential Cathode
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2 W
Grid 2 Voltage125 V
H-C Voltage90 V
Audio Performance
Key Features
- Low coupling capacitance between diode units and pentode section
- Semi-remote-cutoff pentode
- Combined detector, AVC rectifier and audio amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 100 V | 2000 | 350000 | — | 5.5 mA |
| Class A1 Amplifier | 250 V | 2000 | 1000000 | — | 5.7 mA |
Datasheets
Datasheet: 14R7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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