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GK-5A

TRIODE

The GK-5A triode is used for amplification or generation at frequencies up to 26 MHz in stationary RF equipment.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glass-to-metal.
Cooling: foced (water for anode, air for stem, air for envelope and seals).
Height: at most 790 mm.
Diameter: at most 178 mm.
Mass: at most 19 kg.

gk-5a1.jpg

OPERATING ENVIRONMENTAL CONDITIONS

Ambient temperature, °C -1O to +55
Relative humidity at up to +25 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage, V 17
Filament current, A 540-610
Mutual conductance (at anode voltage 10 kV and anode currents 6 and 8 A), mA/V 70-110
Gain coefficient (at anode voltages 8 and 10 kV and anode current 6 A) 32-48
Interelectrode capacitance, pF, at most:
input 220
output 5
transfer 100

Limit Operating Values
Filament voltage, V 18
Anode voltage, kV:
DC 10
peak value at 100-% anode modulation 20
Filament starting current, A 863
Dissipation, kW:
anode 200
grid 10
Operating frequency, MHz 26
Temperature at envelope and seals, °C 150