Tube-number record
7459
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BrandAmperex
ClassTransmitting Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass and Metal
Base MaterialMetal pins
Sectionssingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage6500 V
Plate Dissipation4000 W
Grid 1 Voltage-1100 V
Cathode Current1800 mA
Audio Performance
Key Features
- forced-air-cooled
- specially processed grid
- high grid current rating
- extremely stable characteristics
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AF Power Amplifier and Modulator - Class B (per tube) | 5000 V | 15000 | — | 32 | 1250 mA |
| RF Power Amplifier Class C - Telephony | 5000 V | — | — | — | 1500 mA |
| RF Power Amplifier and Oscillator Class C - Telegraphy - FM | 6000 V | — | — |
Application Notes
The filament center tap pin must not be used for filament current supply. Ratings apply up to 110 megacycles; for use up to 220 Mc/s, consult engineering.
Datasheets
Datasheet: 7459.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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