4CX800H

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

2^nd grid voltage, Volt
300

Plate current, mA
600

Filament (heater) current, A
3.6±0.3

Plate current, A
no less than 1.4

2^nd grid current, mA
no more than 20

Reverse 1^st grid current, mA
no more than 50

1^st grid bias voltage, Volt
-24±6

Mutual conductance, mA/V
-32±6

Gain coefficient of 1^st grid in relative to 2^nd grid
6.5±2

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

1^st grid voltage, V
-150

2^nd grid voltage, V
300

Cathode current, A
1.5

Anode current, A
0.5

Anode dissipation, W
600

1^st grid dissipation, W
2

2^nd grid dissipation, W
15

Operating frequency
60 MHz

Plate-grid and plate curves

Plate-grid curves Plate curves

Filament voltage, Volt	12.6
Anode voltage, Volt	1000
2^nd grid voltage, Volt	300
Plate current, mA	600

Filament (heater) current, A	3.6±0.3
Plate current, A	no less than 1.4
2^nd grid current, mA	no more than 20
Reverse 1^st grid current, mA	no more than 50
1^st grid bias voltage, Volt	-24±6
Mutual conductance, mA/V	-32±6
Gain coefficient of 1^st grid in relative to 2^nd grid	6.5±2
Warm-up time	2.5 min
Inter electrode capacitance, pF: input	51
output	11
transfer	0.09
Operation time, h	more than 1000

Filament voltage, V	11.9 to 13.3
Continues anode voltage, V	2000
Peak anode voltage, V	4000
1^st grid voltage, V	-150
2^nd grid voltage, V	300
Cathode current, A	1.5
Anode current, A	0.5
Anode dissipation, W	600
1^st grid dissipation, W	2
2^nd grid dissipation, W	15
Operating frequency	60 MHz