RADIAL BEAM POWER TETRODE
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BrandEIMAC
ClassTransmitting Tube
BaseSpecial Coaxial (SK-340 for HF, SK-350 for VHF)
FilamentV @ mA
Construction
Primary TypeTetrode
EnvelopeCeramic/Metal
Base MaterialMetal
Sections1
Filament / Heater
MaterialThoriated Tungsten Mesh
Absolute Maximum Ratings
Plate Voltage7500 V
Plate Dissipation7500 W
Grid 2 Voltage1500 V
Grid 1 Voltage-500 V
Cathode Current3000 mA
Audio Performance
Key Features
- Ceramic/metal construction
- Thoriated tungsten mesh filament
- High gain (over 20 dB)
- Radial beam structure
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Power Amplifier Class C FM (100.5 MHz) | 6500V | - | - | 4.5 | 2400mA |
| RF Linear Amplifier Class AB1 (< 30 MHz) | 7500V | - | - | - | 2200mA |
Application Notes
Intended for VHF power amplifier service, FM broadcast, and VHF-TV linear amplifier service. Air flow must be applied before or simultaneously with filament voltage.
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