GK-11P

POWER TETRODE

The GK-11P power tetrode is used for amplifying RF signals, including single-sideband ones, in common-grid or common-cathode circuits, in stationary RF equipment.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal-ceramic.
Cooling: forced (evaporation for anode, air for envelope).
Height: at most 630 mm.
Diameter: at most 244 mm.
Mass: at most 45 kg.

BASIC DATA Electrical Parameters
Filament voltage (AC or DC), V	22
Filament current, A	300-340
Mutual conductance (at anode voltage 2 kV, grid 2 voltage 1.5 kV, anode currents 15 and 25 A), mA/V	180-230
Gain coefficient (at anode voltage 2 kV, grid 2 voltages 1.5 kV and 1.0 kV, anode current 15 A)	5-8
Anode current (at anode voltage 2 kV and grid 2 peak voltage, 1.5 kV), A, at least	38
Negative bias voltage (at anode voltage 10 kV, grid 2 voltage 1.5 kV, anode current 5.5 A), V (absolute value)	220-300
Negative cutoff voltage (at anode voltage 10 kV, grid 2 voltage 1.5 kV, anode current 0.5 A), V (absolute value), at most	420
Interelectrode capacitance, pF, max.:
input	780
output	120
transfer	7
Output power, kW, min.:
at 30 MHz with anode voltage 15 kV, grid 2 voltage 1.0 kV, filament voltage 22 V	250
during single-sideband signal amplification at relative level of 3rd-order combination components not worse than -36 dB and relative level of 5th-order combination components not worse than -40 dB, at 30 MHz with anode voltage 12 kV, grid 2 voltage 1.5 kV, filament voltage 22 V (peak value)	90

Limit Operating Values
Filament voltage (AC or DC), V	21-23
Anode voltage (DC), kV	15
Grid 2 voltage (DC), kV	2
Negative instantaneous grid 1 voltage (absolute value), kV	1
Filament starting current, A	520
Anode current (DC component under class  conditions), A	45
Dissipation, kW:
anode	120
grid 2	3
grid 1	1.5
Operating frequency, MHz	30
Temperature at the hottest point of envelope, °C	175

Averaged Anode Characteristic Curves:
U_f = 22V; U_g2 = 750 V

Averaged Characteristics Curves:
U_f = 22V; U_g2 = 1,500V

Averaged Anode Characteristic Curves:
U_f = 22V; U_g2 = 1,000V

Averaged Anode-Grid Characteristic Curves:
U_f = 22V; U_g2 = 750 V

Averaged Anode-Grid Characteristic Curves:
U_f = 22V; U_g2 = 1,000V

Averaged Anode-Grid Characteristic Curves:
U_f = 22V; U_g2 = 1.500V

Averaged Grid Characteristic Curves:
U_f = 22 V; U_g2 = 750 V

Averaged Grid Characteristic Curves:
U_f = 22V; U_g2 = 1.000V

Averaged Grid Characteristic Curves:
U_f = 22V; U_g2 = 1,500V

Averaged Grid 2 Characteristic Curves:
U_f = 22V; U_g2 = 750V

Averaged Grid 2 Characteristic Curves:
U_f = 22V; U_g2 = 1,000V

Averaged Grid 2 Characteristic Curves:
U_f = 22V; U_g2 = 1,500V

Averaged Characteristic Curves:
U_f = 22V; U_g2 = 750V
_____ grid 1-anode;
_ _ _ _ grid 2-anode

Averaged Characteristic Curves:
U_f = 22V; U_g2 = 1,000V
_____ grid 1-anode;
_ _ _ _ grid 2-anode

Averaged Characteristic Curves:
U_f = 22V; U_g2 = 1,500V
_____ grid 1-anode;
_ _ _ _ grid 2-anode