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GU-92 B

TETRODE

The GU-92B tetrode is used in RF power amplifier circuits in stationary general-purpose RF equipment, including television transmitters.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal ceramic.
Cooling: forced air.
Working position: upright, anode down.
Height: at most 200 mm.
Diameter: at most 190 mm.
Mass: at most 15 kg.

gu-92b(2)00091.jpg
A - anode; K1, K2 - cathode; C1 - grid 1; C2 - grid 2

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz 1-60
acceleration, m/s² 9.8
Multiple impacts with acceleration, m/s² 147
Ambient temperature, °C -10 to +55
Relative humidity at up to +25 °C without moisture condensation, % 98

BASIC DATA
Electrical Parameters
Filament voltage (AC or DC), V 9.5
Filament current, A 130-160
Peak anode current (at anode voltage 2 kV, grid 2 voltage 1 kV, grid 1 voltage 120 V), A 22
Mutual conductance (at anode voltage 2 kV, grid 2 voltage 1 kV and anode currents 6 and 8 A), mA/V, at least 60
Negative grid 1 cutoff voltage, absolute value (at anode voltage 8 kV, grid 2 voltage 1 kV, anode current 0.3 A), V at most 350
Static amplification factor (at anode voltage 2 kV, grid 2 voltages 1 and 1.2 kV, anode current 6 A), at least 4
Output power at black level (at bandwidth 8 MHz, frequency up to 250 MHz), kW, at least 15
Output power at sync pulse level (at bandwidth 8 MHz, frequencies up to 250 MHz), kW, at least 25
Interelectrode capacitance in common-grid circuit, pF:
input 120
output 24
transfer 0.15

Limit Operating Values
Filament voltage (AC or DC), V 10
Filament starting current (peak value,) A 300
Anode voltage (DC), kV 8
Grid 2 voltage, kV 1.2
Dissipation, W:
anode 25-103
grid 2 250
grid 1 120
Operating frequency, MHz 250
Envelope temperature at hottest point, °C 250

gu-92b(3)00101.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 9.5V; Ug2 = 1.2kV

gu-92b(3)00102.jpg
Averaged Grid Characteristic Curves:
Uf = 9.5V; Ug2 = 1.2kV

gu-92b(3)00103.jpg
Averaged Grid Characteristic Curves:
Uf = 9.5V; Ug2 = 1.2kV