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4CX1000A/8168

The 4CX1000A/8168 is a low voltage, high current tetrode specifically designed for Class AB1 RF linear amplifier or audio amplifier applications where its high gain and low distortion characteristics may be used to advantage.


Characteristics

Plate Dissipation (Max.) 1,000 Watts
Screen Dissipation (Max.) 12 Watts
Grid Dissipation (Max.) 0 Watts
Frequency for Max. rating (CW) 110 MHz
Amplification Factor ---
Filament/Cathode Oxide Coated
    Voltage
    Current
 6.0 Volts
9.0 Amps
Capacitance Grounded Cathode
    Input
    Output
    Feedthrough
 81.0 pf
11.8 pf
.01 pf
Capacitance Grounded Grid
    Input
    Output
    Feedthrough
 35.5 pf
12.0 pf
.00 pf
Cooling Forced Air
Base Special, Breechblock
Air Socket SK-800B
Air Chimney SK-806
Boiler ---
Length 4.80 in; 122.00 mm
Diameter 3.37 in; 85.50 mm
Weight 27 oz; 0.77

  Maximum Ratings Typical Operation
Class of
Operation		 Type of Service Plate Voltage
(Volts)		 Plate
current
(Amps)		 Plate
Voltage
(Volts)

Vg

 Screen
Voltage
(Volts)		 Plate
Current
(Amps)		 Drive
Power
(Watts)

ZI

 Output Power
(kiloWatts)
AB1 RF Linear Amplifier at 30MHz 3,000 1.0 3,000

 

 325 1.8 ---

 

 1.63
AB1 AF Amplifier or Modulator 3,000 1.0 3,000

 

 325 1.8 ---

 

 3.23
AB1

 

 3,000 1.0 2,000

-55

 325

0.5

 ---

2.8K

2.16

AB1   3,000 1.0 2,500

-55

 325

0.5

 ---

3.1K

 2.92
AB1   3,000 1.0 3,000

-55

 325

0.5

 ---

3.85K

 3.36
AB1   3,000 1.0 2,000

-55

 325

0.25

 0

 

 1.02
AB1

 

 3,000 1.0 3,000

-60

 325

0.25

0

 

1.68

Characteristics and Operating values are based on performance tests. Figures may change without notice as the result of additional data or product refinement. CPI Eimac Division should be consulted before using this information for final equipment design.

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