4CX3500A 

Designed for use in VHF power amplifier service, can also be used as a VHF TV linear amplifier. 

 

Description
Maximum Ratings
Tube Numbering System
Warranty

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Description

Plate Dissipation ( Max ) 3500 watts
Screen Dissipatoin ( Max.) 165 watts
Grid Dissipation ( Max ) 50 watts
Frequency for Max Ratings (CW) 220 watts
Cooling Forced Air
Filament Thoriated Tungsten Mesh
     Voltage 5 volts
     Current 90 amperes
Capacitances ( Gnd. Cath. Connection )
     Input 111.0 pF
     Output 12.0 pF
     Feed-through 0.5 pF
Capacitances ( Gnd. Grid Connection )
     Input 58.5 pF
     Output 10.0 pF
     Feed-through 0.4 pF
Amplification Factor 4.5
Base Special Coaxial
Recommended Air System Socket SK-340 Family
Recommended Air Chimney SK-346
Maximum Seal and Anode Core Temperature 250o C
Maximum Length 7.25n / 184.15 mm
Maximum Diameter 4.94 in / 125.48 mm
Weight ( approximate ) 5.5 lb / 2.5 kg
Operating Position Vertical, base up or down

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Maximum Ratings Typical Operation
Class of Operation Type of Sevice Plate Voltage (volts) Plate Current (amps) Plate Voltage (volts) Screen Voltage (volts) Plate Current (amps) Drive Power (watts) Output Power (watts)
C Grid Driven RF Amplifier (30 MHz) 5500 2.0 5000 500 1.32 25 5280
C Grid Driven RF Amplifier (100.5 MHz) 5500 2.0 4300 750 1.90 66 5530

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