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GS-15B

TETRODE

The GS-15B tetrode is used as a RF oscillator and amplifier in continuous operation in grounded-grid circuits.

GENERAL
Cathode: indirectly heated, oxide-coated, dispenser.
Envelope: metal-ceramic with ring leads.
Cooling: forced air.
Height: at most 69 mm.
Diameter: at most 37.1 mm.
Mass: at most 140 g.

gs-15b(1)1.jpg
KP - cathode and heater; P - heater; C1 - grid; C2 - grid 2; A - anode

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequency, Hz 5-1,400
acceleration, m/s² 98
Multiple impacts with acceleration, m/s² 1,470
Linear loads with acceleration, m/s² 2,940
Ambient temperature, °C -60 to +100
Relative humidity up to +40 °C, % 98

BASIC DATA
Electrical Parameters
Heater voltage (AC or DC), V 6.3
Heater current, A 1.85-2.2
Anode voltage (DC), V 900
Grid 2 voltage (DC), V 250
Mutual conductance (at grid 1 voltage reduction by 1 V and anode current 0.2 A), mA/V, at least 9
Grid 1 inverse current (at anode current 0.2 A), µA, at most 20
Warm up time (at anode voltage 1.5 kV, grid 2 voltage 300 V, anode current 0.24 A, drive power 15 W at wavelength 30 cm), s, at most 60
Oscillator output power in amplification mode (at anode voltage 1.5 kV, grid 2 voltage 300 V, anode current 0.24 A, drive power 15 W at wavelength 30 cm), W, at least 160
Interelectrode capacitance, pF:
grid 1-cathode 6-8.5
grid 2-anode 1.5-2.3

Limit Operating Values
Heater voltage (AC or DC), V:
maximum 6.6
minimum 6
Maximum anode voltage (DC), kV 1.37
Maximum grid 2 voltage (DC), V 300
Grid 1 voltage, V:
maximum 0
minimum -100
Dissipation, W:
anode 200
grids 3
Maximum anode current, A 0.24
Grid 2 current, mA:
maximum 10
minimum -10
Grid 1 current, mA:
maximum 40
minimum 0
Maximum drive power, W 12
Minimum oscillator output power, W 112.5
Minimum wavelength, cm 30
Maximum temperature at envelope and leads, °C 200

gs-15b(3)1.jpg
Averaged Characteristic Curves:
Uf = 6.3V; Ug2 = 300V;
_____ anode;
_ _ _ grid-anode

gs-15b(3)2.jpg
Averaged Characteristic Curves:
Uf = 6.3V; Ug2 = 1.5kV;
_____ anode-grid;
- - - grid

gs-15b(3)3.jpg
Averaged Characteristic Curves Showing Oscillator Output Power versus Anode Voltage:
Uf = 6.3V; Ug2 = 300V; Pin = 15W; L = 30 cm

gs-15b(3)4.jpg
Averaged Characteristic Curves Showing Oscillator Output Power versus Input Power:
Uf = 6.3V; Ug2 = 300V; Ia = 240 mA; L = 30 cm;
_____ oscillator output power (P);
_ _ _ gain coefficient