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GU-53 B

TETRODE

The GU-53B tetrode is used as a power amplifier in stationry RF equipment and automobile parking stations, including single-sideband transmitters.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal-ceramic.
Cooling: forced air.
Height: at most 472 mm.
Diameter: at most 225 mm.
Mass: at most 33 kg

gu-53b(1)1.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C -10 to +35
Relative humidity at up to +40 °C, % 98

BASIC DATA
Electrical Parameters
Filament voltage, V 14
Filament current, A 230-260
Mutual conductance (at anode voltage 1.4 kV, grid 2 voltage 1 kV, anode currents 7 and 11 A), mA/V 110-140
Gain coefficient (grid 1 -grid 2) (at anode voltage 1.4 kV, grid 2 voltages 1 and 1.2 kV, anode current 7 A) 7-10
Anode current at zero grid 1 voltage (at anode voltage 2 kV, grid 2 peak voltage 1.5 kV), A, at least 16
Inerelectrode capacitance, pF:
input, at most 470
output, at most 75
transfer, at most 5
Negative cutoff voltage (at anode voltage 10 kV, grid 2 voltage 1.5 kV, anode current 0.5 A), V, at most 350
Output power (at anode voltage 12 kV), kW, at least 80

Limit Operating Values
Filament voltage, V 13-14.5
Anode voltage (DC), kV 12
Negative grid 1 voltage, kV 1.5
Grid 2 voltage (DC), kV 1.8
Filament starting current, A 360
Dissipation, kW:
anode:  
at cooling air temperature +30 °C 45
at cooling air temperature +50 °C 35
grid 2 1.8
grid 1 1.0
Operating frequency, MHz 75
Anode temperature, °C 250
Temperature at ceramic parts and seals, °C 200

gu-53b(2)1.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 1.5kV;
_____ anode;
_ _ _ grid-anode;
Pa max

gu-53b(2)2.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 1.75kV;
_____ anode;
_ _ _ grid-anode;
Pa max

gu-53b(3)1.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 2kV;
_____ anode;
_ _ _ grid-anode;
Pa max

gu-53b(3)2.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 1.5kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2

gu-53b(3)3.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 1.75kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2

gu-53b(3)4.jpg
Averaged Characteristic Curves:
Uf = 14V; Ug2 = 2kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2