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GS-17B

TETRODE

The GS-17B tetrode generates and amplifies RF oscillations in the frequency range 1,000 MHz.

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: metal-ceramic with ring
leads of cathode and grids.
Cooling: forced air.
Height: at most 205 mm.
Diameter: at most 162 mm.
Mass: at most 6.6 kg.

gs-17b(1)1.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads;
frequencies, Hz 5-8
acceleration, m/s² 39
Multiple impacts with acceleration, m/s² 118
Minimum ambient temperature, °C 60
Relative humidity at +40 °C, % 95-98

BASIC DATA
Electrical Parameters
Filament voltage (AC or DC), V 3.4
Filament current, A 148-172
Resistance of unheated cathode, 0 about 0.0025
Anode current (at anode voltage 1 kV, grid 2 voltage 0.6 kV), A, at least 2.5
Grid 2 current (at anode voltage 1 kV, grid 2 voltage 0.6 kV), A, at most 0.4
Negative grid 1 cutoff voltage (absolute value) (at anode voltage 5 kV, grid 2 voltage 0.8 kV, anode current 0.1 A), V, at most 170
Mutual conductance (at anode voltage 2 kV, grid 2 voltage 0.8 kV, anode currents 2 and 4 A), mA/V 55
Gain coefficient (grid 1 -grid 2) (at anode voltage 2 kV, grid 2 voltages 0.8 and 0.6 kV, anode current 2 A) 7.5-10.5
Power gain 5
Oscillator output power, kW, at least 4.6
Interelectrode capacitance, pF:
input 55-60
output 21-24
transfer, at most 0.05

Limit Operating Values
Filament voltage (AC or DC), V:
maximum 3.5
minimum 3.1
Maximum filament starting current, A 240
Maximum anode voltage (DC), kV 5.5
Maximum grid 2 voltage (DC), kV 1
Maximum instantaneous grid 1 voltage (absolute value), V -500
Dissipation, W:
anode 1.0x104
grid 2 100
grid 1 50
Maximum operating frequency, MHz 960
Maximum temperature, °C:
anode 250
bulb, stem and metal-to-ceramic seals 150

gs-17b(2)1.jpg
Averaged Characteristic Curves:
Uf = 3.4V; Ug2 = 0.8kV;
_____ anode;
_ _ _ grid 2-anode;
_ . _ grid 1-anode

gs-17b(3)1.jpg
Averaged Characteristic Curves:
Uf = 3.4V; Ug2 = 1 kV;
_____ anode;
_ _ _ grid 2-anode;
_ . _ grid 1-anode

gs-17b(3)2.jpg
Averaged Characteristic Curves:
Uf = 3.4V; Ug2 = 0.8kV;
_____ anode-grid;
_ _ _ grid 2

gs-17b(3)3.jpg
Averaged Characteristic Curves:
Uf = 3.4V; Ug2 = 1kV;
_____ anode-grid;
_ _ _ grid 2

gs-17b(3)4.jpg
Averaged Grid 1 Characteristic Curves:
Uf = 3.4V; Ug2 = 0.8kV

gs-17b(3)5.jpg
Averaged Grid 1 Characteristic Curves:
Uf = 3.4V; Ug2 = 1kV