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Tube Database (7,341 tube types · 1,270 archive entries)

Other (3,257 tube types), Pre (2,314 tube types), Power (1,030 tube types), Rectifier (740 tube types)
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Tube-number record

F-110-X

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BrandFederal Telephone and Radio Company
ClassPower Triode

Construction

Primary TypeTriode
EnvelopeWater-cooled anode
SectionsSingle

Filament / Heater

MaterialPure Tungsten

Absolute Maximum Ratings

Plate Voltage20000 V
Plate Dissipation25000 W
Grid 1 Voltage-5000 V
Cathode Current12500 mA

Audio Performance

Key Features
  • Water-cooled anode
  • Pure tungsten filament
  • Radio-frequency power amplifier
  • Oscillator

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class C Telegraphy10000 V——402500 mA

Application Notes

Maximum ratings apply up to 3 megacycles with operation permissible up to 20 megacycles at reduced ratings.

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