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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:
U_f = 9.5V; U_g2 = 1.2kV

gu-92b(3)00102.jpg
Averaged Grid Characteristic Curves:
U_f = 9.5V; U_g2 = 1.2kV

gu-92b(3)00103.jpg
Averaged Grid Characteristic Curves:
U_f = 9.5V; U_g2 = 1.2kV

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