Tube-number record
8437
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BrandRCA
ClassBeam Power Tube
BaseCoaxial
Construction
Primary TypeBeam tetrode / beam power
EnvelopeCeramic-Metal (Cermolox)
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialThoriated-Tungsten Mesh
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage7000 V
Plate Dissipation10000 W
Grid 2 Voltage1500 V
Grid 1 Voltage-150 V
Cathode Current4000 mA
Audio Performance
Key Features
- Cermolox construction
- Forced-air cooled
- Integral radiator
- Thoriated-tungsten mesh filament
- High gain-bandwidth products
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Cathode-Drive Circuit at 400 Mc | 6500 V | — | — | 30 | 3500 mA |
Application Notes
Designed for compact aircraft, mobile, and stationary equipment applications in the UHF frequency range. Requires adequate air flow through radiator to limit core temperature to 250°C.
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