4CX3000A/8169

Designed to be used as a Class AB, linear amplifier in audio or radio-frequency applications.

 

Description
Maximum Ratings
Tube Numbering System
Warranty

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Description

Plate Dissipation ( Max ) 3500 watts
Screen Dissipation (Max ) 175 watts
Grid Dissipation ( Max ) 50 watts
Frequency for Max. Ratings (CW) 150 MHz
Cooling  Forced Air
Filament Thoriated Tungsten
     Voltage 109
     Current 41.5 amperes
Capacitances (Grounded Cathode Connection)  
     Input 130.0 pF
     Output 12.5 pF
     Feed-though 1.0 pF
Capacitances (Grounded Grid Connection)  
     Input 61.0 pF
     Output 12.5 pF
     Feed-though 1.0 pF
Amplification Factor 5.5
Base Special, Breechblock
Recommended Air-System Socket SK-1400
Recommended Air Chimney SK-1406
Maximum Seal Temperature 250o C
Maximum Length 7.9 in / 200.70 mm
Maximum Diameter 4.63 in / 117.60 mm
Weight ( approximate ) 5.5 lb / 2.5 kg
Operating Position Vertical 

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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 RF Amplifier at 30 MHz  7000 2.0 7000 500 1.9 41 11,000
C RF Amplifier Plate Modulated at 30 MHz 5000 1.4 5000 500 1.4 31 5750
AB RF Linear Amplifier 7000 2.0 5000 850 1.7 - 5300
AB AF Amplifier or Modulator (two tubes) 6000 2.0 6000 850 3.1 - 12,400

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