,Cathode Ray Tubes,Ceramic Tubes,CFA,chemical synthesis,chromenes,CO2 sensors,Communication,composite membranes,condensed heterocycles,Control Tubes,CWT,database,Devices,Diodes,Discharger,Display Tubes,Electron Tubes,Electron,antitumor,artificial organs,artificial skin,Attenuators,Audio tubes,Backward Wave Oscillator,Band filtering,Beam tubes,biocompatibility,biomaterials,biosensors,Broadcast,Broadcasting Tubes,Broadcasting,carbon dioxide isolation3CX300A1,4CX400A,4CX800A,4X150A,6360,6BK4,6BQ7.6C19,6C33C,6D22S,6N1P,6S19P,7034,813,829A,832A,833A,absorbent,Acquisition,Aircraft,Amateur Radio,Amateur,Amplifiers,Antenna amplifiers,anticancer compounds,antitumor agent,Broadcast Tubes,Transmitting Tubes,Transmitting,Broadcast,Russia,component,Navigator,product,characteristics,tube,technical,information,diagram">

GU-76 B

TETRODE

The GU-76B power tetrode is used for RF signal amplification, including single-sideband signals, in stationary and mobile equipment not operating in motion.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal ceramic, with outer copper anode.
Cooling: forced air.
Height: at most 341 mm.
Diameter: at most 224 mm.
Mass: at most 20 kg.

gu76b(1)00011.jpg

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

BASIC DATA
Electrical Parameters
Filament voltage, V 11
Filament current, A 150-190
Mutual conductance (at anode voltage 2 RV, grid 2 voltage 1.3 kV, anode currents Sand 11 A), mA/V 85-115
Gain coefficient (at anode voltage 2 kV, grid 2 voltages 1 and 1.3 kV, anode current 8 A) 6-9
Anode current (at anode voltage 2 kV, grid 2 voltage 1.3 kV), A, at least 14.5
Negative bias voltage (at anode voltage 10 kV, grid 2 voltage 1.3 kV, anode current 2 A), absolute value 170-200
Negative cutoff voltage (at anode voltage 10 kV, grid 2 voltage 1.3 kV, anode current 0.3 A), absolute value, at most 270
Interelectrode capacitance, pF:
input 350-385
output 35-45
transfer, at most 2.2
Output power (at filament voltage 11 V, anode voltage 10 kV, grid 2 voltage 1.3 kV, grid 1 voltage -250 V), kW, at least 40
Output power (corresponding to the current of singlesideband signal envelope at filament voltage 11 V, anode voltage 10 kV, grid 2 voltage 1.3 kV), kW, at least 30
Relative level of combination components (at output power at least 30 kW, filament voltage 11 V, anode voltage 10 kV, grid 2 voltage 1.3 kV, anode quiescent current 2A),dB:
third-order components, at most -39
fifth-order components, at most -40

Limit Operating Values
Filament voltage (AC or DC), V 10.5-11.5
Filament starting current, A 280
Anode voltage (DC), kV 11
Grid 2 voltage (DC), kV 1.5
Negative grid 1 voltage (instantaneous value), absolute value, V 700
Dissipation, W:
anode 3x10³
grid 2 900
grid 1 300
Operating frequency, MHz 75
Anode temperature, °C 250
Temperature at hottest point of envelope, °C 200

gu76b(3)00031.jpg
Averaged Characteristic Curves:
Uf = 11V; Ug2 = 1.5kV;
_____ anode:
_ _ _ Pa max

gu76b(3)00032.jpg
Averaged Grid-Anode Characteristic Curves:
Uf = 11V; Ug2 = 1.5kV;
_____ grid 2;
_ _ _ grid 1

gu76b(3)00033.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 11V; Ug2 = 1.5kV

gu76b(3)00034.jpg
Averaged Characteristic Curves:
Uf = 11V; Ug2 = 1.5kV;
_____ grid 2;
_ _ _ grid 1