Tube-number record
HIGH-MU UHF TRIODE
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BrandEimac
ClassPlanar Triode
BaseCoaxial
Filament6.3 V @ 1.2 mA
Construction
Primary TypeTriode
EnvelopeCeramic-and-metal
SectionsSingle
Filament / Heater
Warm-up Time60s
Heater NotesOxide-coated, unipotential cathode.
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation100 W
Grid 1 Voltage-150 V
Cathode Current190 mA
Audio Performance
Key Features
- Ceramic-and-metal construction
- Planar triode
- High mechanical uniformity
- Forced-air or conduction cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grounded-Grid 500 Mc | 900 V | — | — | 80 | 140 mA |
| Grounded-Grid 2500 Mc | 900 V | — | — | — | 140 mA |
| Carrier Conditions 500 Mc Plate Modulated | 600 V | — | — | — | 100 mA |
Application Notes
Designed for use as a power amplifier, oscillator, or frequency multiplier in applications requiring greater power output than the 7289/3CX100A5.
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