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

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

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

Averaged Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 200V

Averaged Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 250V

Averaged Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 300V

Averaged Grid-Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 200V

Averaged Grid-Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 200V

Averaged Grid-Anode Characteristic Curves:
U_f = 6.3V; U_g2 = 250V

Averaged Grid-Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 250V

Averaged Grid-Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 300V

Averaged Grid-Anode Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_g2 = 300V

Averaged Anode-Grid Characteristic Curves:
U_f = 6.3V; U_a = 200V
_____ I_a;
- - - I_g2;
- . - I_g1

Averaged Anode-Grid and Grid Characteristic Curves (Each Tetrode):
U_f = 6.3V; U_a = 700V;

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