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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
RF Power Amplifier Class C FM (100.5 MHz)6500V--4.52400mA
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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