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The GI-23B triode generates and amplifies RF oscillations in pulsed operation with anode modulation in the decimetric wavelength range.

Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic.
Cooling: forced air.
Height: at most 113 mm.
Diameter: at most 65 mm.
Mass: at most 380 g.


Vibration loads:
frequencies, Hz 5-1,000
acceleration, m/s² 98
Multiple impacts with acceleration, m/s² 735
Single impacts with acceleration, m/s² 1,470
Linear loads with acceleration, m/s² 490
Ambient temperature, °C -60 to +100
Relative humidity at up to +40 °C, % 95-98

Electrical Parameters
Heater voltage (AC or DC), V 12.6
Heater current, A 2.3-2.6
Heater voltage (DC), kV 1.3
Anode current, mA 110-200
Mutual conductance, mA/V 26-36
Inverse grid current, µA, at most 50
Penetration factor, % 1-2
Peak output power (at peak anode voltage 10 kV, peak anode current 12 A, wavelength at most 28.8 cm, pulse duration 3-15 µs), kW, at least 40
Interelectrode capacitance, pF:
input 14-18
output, at most 0.16
transfer 5.5-6.5

Limit Operating Values
Heater voltage (AC or DC), V 11.9-13.3
Peak anode voltage, kV 14
Anode dissipation, W 300
Grid dissipation, W:
with thermocurrent about 5 mA 25
neglecting thermocurrent 10
Peak anode current (DC component), A 15
Pulse duration, µs 15
1/duty factor, at least 200
Resistance in grid circuit, kOm 10
Temperature, °C:
anode heat sink 160
anode end face 200
grid lead 200
cathode lead 120
ceramic parts 250

Standard Operating Conditions
Heater voltage, V 12.6
Peak anode voltage, kV 10
Peak anode current, A 12
Pulse duration, µs 10
Peak output power, kW 40
1/duty factor 1,000
Wavelength,cm 28

Characteristic Curves Showing Output Power and Efficiency versus Voltage in Pulsed Operation