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4CX800H

General

Modulator tetrode.

Envelope: metal-to-glass.

Cooling: forced air.

Mass 550 g.

Lead diagram

General characteristics

Filament voltage, Volt

12.6

Anode voltage, Volt

1000

2nd grid voltage, Volt

300

Plate current, mA

600

Filament (heater) current, A

3.60.3

Plate current, A

no less than 1.4

2nd grid current, mA

no more than 20

Reverse 1st grid current, mA

no more than 50

1st grid bias voltage, Volt

-246

Mutual conductance, mA/V

-326

Gain coefficient of 1st grid in relative to 2nd grid

6.52

Warm-up time

2.5 min

Inter electrode capacitance, pF:

input

51

output

11

transfer

0.09

Operation time, h

more than 1000

Limited operating values

Filament voltage, V

11.9 to 13.3

Continues anode voltage, V

2000

Peak anode voltage, V

4000

1st grid voltage, V

-150

2nd grid voltage, V

300

Cathode current, A

1.5

Anode current, A

0.5

Anode dissipation, W

600

1st grid dissipation, W

2

2nd grid dissipation, W

15

Operating frequency

60 MHz

Plate-grid and plate curves

Plate-grid curves Plate curves