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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

R.F. POWER AMPLIFIER, OSCILLATOR, CLASS B MODULATOR

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BrandAmperex
ClassTriode

Construction

Primary TypeTriode
Envelope
Glass
Sections1

Filament / Heater

MaterialThoriated Tungsten

Absolute Maximum Ratings

Plate Voltage3000 V
Plate Dissipation250 W
Grid 1 Voltage-500 V
Cathode Current275 mA

Audio Performance

Power Output750 W
Key Features
  • R.F. Power Amplifier
  • Oscillator
  • Class B Modulator

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
A.F. Power Amplifier and Modulator—Class B (Two Tubes)3000 V4000500023370 mA
R.F. Power Amplifier—Class B—Telephony2500 V——23150 mA
Plate Modulated R.F. Power Amplifier—Class C—Telephony2000 V——23250 mA
R.F. Power Amplifier and Oscillator—Class C—Telegraphy2500 V——23275 mA

Application Notes

Carrier conditions for use with a maximum modulation factor of 1.0

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