3CX3000A7 

Provides high power output as an amplifier, oscillator or modulator at low plate voltages. 

 

Description
Maximum Ratings
Tube Numbering System
Warranty

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Description

Plate Dissipation ( Max ) 4000 watts
Grid Dissipation ( Max ) 225 watts
Frequency for Max. Ratings (CW) 110 MHz
Cooling Forced Air
Filament Thoriated Tungsten
     Voltage 7.5 volts
     Current 51.5 amperes
Capacitances (Gnd. Cath. Connection)  
     Input 38.0 pF
     Output 0.6 pF
     Feed-through 24.0 pF
Capacitances (Gnd. Grid. Connection)  
     Input 38.0 pF
     Output 24.0 pF
     Feed-through 0.6 pF
Amplification Factor 160
Base Special, Coaxial
Maximum Seal and Anode Core Temperature 250o C
Maximum Length 9.0 in /  228.60 mm
Maximum Diameter 4.15 in / 105.50 mm
Weight ( approximate ) 6.2 lb / 2.8 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) Plate Current (amps) Drive Power (watts) Output Power (watts)
C Cathode Driven RF Amplifier 5000 2.5 4800 1.5 435 5500
AB Cathode Driven RF Linear Amplifier 5000 2.5 4800 2.0 410 7260
AB Grid Driven RF Linear Amplifier AM Service 5000 2.5 4000 0.74 11.5 1130
AB Grid Driven RF Amplifier or Modulator (two tubes) 5000 2.5 4000 3.6 115 10,500
D Switching Modulator 15,000 2.5 13,700 0.53 - -

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