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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.

gk-11p(1)1.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C -10 to +55
Relative humidity at up to +25 °C, % 98

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

gk-11p(2)1.jpg
Averaged Anode Characteristic Curves:
Uf = 22V; Ug2 = 750 V

gk-11p(3)1.jpg
Averaged Characteristics Curves:
Uf = 22V; Ug2 = 1,500V

gk-11p(3)2.jpg
Averaged Anode Characteristic Curves:
Uf = 22V; Ug2 = 1,000V

gk-11p(3)3.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 22V; Ug2 = 750 V

gk-11p(3)4.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 22V; Ug2 = 1,000V

gk-11p(3)5.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 22V; Ug2 = 1.500V

gk-11p(4)1.jpg
Averaged Grid Characteristic Curves:
Uf = 22 V; Ug2 = 750 V

gk-11p(4)2.jpg
Averaged Grid Characteristic Curves:
Uf = 22V; Ug2 = 1.000V

gk-11p(4)3.jpg
Averaged Grid Characteristic Curves:
Uf = 22V; Ug2 = 1,500V

gk-11p(4)4.jpg
Averaged Grid 2 Characteristic Curves:
Uf = 22V; Ug2 = 750V

gk-11p(4)5.jpg
Averaged Grid 2 Characteristic Curves:
Uf = 22V; Ug2 = 1,000V

gk-11p(4)6.jpg
Averaged Grid 2 Characteristic Curves:
Uf = 22V; Ug2 = 1,500V

gk-11p(5)1.jpg
Averaged Characteristic Curves:
Uf = 22V; Ug2 = 750V
_____ grid 1-anode;
_ _ _ _ grid 2-anode

gk-11p(5)2.jpg
Averaged Characteristic Curves:
Uf = 22V; Ug2 = 1,000V
_____ grid 1-anode;
_ _ _ _ grid 2-anode

gk-11p(5)3.jpg
Averaged Characteristic Curves:
Uf = 22V; Ug2 = 1,500V
_____ grid 1-anode;
_ _ _ _ grid 2-anode