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GU-63

TETRODE

The GU-63 double tetrode is used as an oscillator and a power amplifier at frequencies up to 250 MHz

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: glass-to-metal with cathode ring.
Mass: at most 40 g

gu-63(1)1.jpg
1 - grid 1 of second tetrode; 2, 4- heater; 3 - cathode; 5 - grid 1 of first tetrode; 6 - grid 2; A1 - anode of first tetrode - top cap; A2 - anode of second tetrode - top cap; Ê - cathode; I - snap leads

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz 5-1,000
acceleration, m/s² 98-25
Multiple impacts with acceleration, m/s² 343
Single impacts with acceleration, m/s² 4,900
Linear bads with acceleration, m/s² 980
Ambient temperature, °C -65 to +70
Relative humidity at up to +40 °C, % 95-98

BASIC DATA
Electrical Parameters
Heater voltage (AC or DC), V 6.3
Heater current, mA 630-750
Anode voltage (DC), V 150
Grid 2 voltage (DC), V 250
Anode current (at grid 1 voltage 0 of first tetrode and -75 V of second tetrode), mA 50-120
Mutual conductance (at grid 1 voltage -16V of first tetrode and -75 V of second tetrode), mA/V 1.8-3.8
Grid 1 reverse current (at heater voltage 7 V, anode voltage 400 V, anode current 30 mA), µA, at most 1
Oscillatory power (at anode voltage 300 V, grid 1 voltage -60 V of first and second tetrodes, drive voltage about 110V, anode current 80 mA, grid 2 voltage about 12 mA, at 200 MHz), W, at least 11
Warm up time, s, at most 30
Vibronoise voltage (at resistance 2 kOm in anode circuit), mV (r.m.s.):
at frequencies 50-1,000 Hz 1,500
at frequencies 1,000-2,000 Hz 2,000
Interelectrode capacitance, pF:
input, at most 7.0-9.6
output, at most 1.3-2.6
transfer, at most 0.1

Limit Operating Values
Heater voltage (AC or DC), V 5.7-7
Anode voltage (DC), V 700
Grid 2 voltage (DC), V 300
Grid 1 voltage (DC), V -200
Drive voltage, V 110
Dissipation, W:
anodes 13
grid 2 3
grid 1 0.5
Anode current (DC component), mA 40
Voltage between cathode and heater, V -150 to +150

gu-63(2)00011.jpg
Averaged Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 200V

gu-63(2)00012.jpg
Averaged Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 250V

gu-63(2)00013.jpg
Averaged Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 300V

gu-63(3)00021.jpg
Averaged Grid-Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 200V

gu-63(3)00022.jpg
Averaged Grid-Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 200V

gu-63(3)00023.jpg
Averaged Grid-Anode Characteristic Curves:
Uf = 6.3V; Ug2 = 250V

gu-63(3)00024.jpg
Averaged Grid-Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 250V

gu-63(4)00031.jpg
Averaged Grid-Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 300V

gu-63(4)00032.jpg
Averaged Grid-Anode Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ug2 = 300V

gu-63(4)00033.jpg
Averaged Anode-Grid Characteristic Curves:
Uf = 6.3V; Ua = 200V
_____ Ia;
- - - Ig2;
- . - Ig1



gu-63(4)00034.jpg
Averaged Anode-Grid and Grid Characteristic Curves (Each Tetrode):
Uf = 6.3V; Ua = 700V;