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GI-6B

MICROWAVE TRIODE

The GI-6B microwave triode is used in oscillator circuits with no external feedback, providing continuouswave or pulsed operation with anode modulation in the decimetric wavelength range.

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic.
Cooling: forced air.
Height: at most 110.5 mm.
Diameter: at most 65 mm.
Mass: at most 330 g.

gi-6b(1)00021.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz 5-600
acceleration, m/s² 59
Multiple impacts with acceleration, m/s² 343
Ambient temperature, °C 60 to 4 100
Relative humidity at up to +40 °C, % 98

BASIC DATA
Electrical Parameters
Heater voltage, V 12.6
Heater current, A 1.8-2.05
Mutual conductance (at anode voltage 1.3 kV, grid voltage change 1 V, anode current 150 rnA), mA/V 18-26
Penetration factor (at anode voltage 1.3 kV, anode voltage change 200 V, anode current 150 mA), % 1-2
Interelectrode capacitance, pF:
input 10-12.7
output 0.2-0.3
transfer 4-5.2
Warm up time, s, at most 90
Output power, W:
in CW operation at anode voltage 1.35 kV, anode current 250 mA, wavelength 52 cm.
at least
130
over 350 h of service, at least 104

Limit Operating Values
Heater voltage, V:
upper limit 13
lower limit 12.3
Anode voltage, kV:
DC in CW operation 2.5
DC with cold cathode 3
instantaneous value in CW operation 5
peak value in pulsed operation (at pulse duration at most 10 µs) 9
Grid voltage, V:
instantaneous value in CW operation -300 to +80
peak value in pulsed operation (at pulse duration 10 µs -900 to +600
Cathode current:
r.m.s. value, mA
600
DC component under conditions of class without modulation, mA 400
instantaneous value under conditions of class without modulation, A 1.25
Dissipation, W:
anode 350
grid:  
with thermocurrent 5 mA 2.5
neglecting thermocurrent 7
Wavelength, cm:
in pulsed operation, lower limit 18
in CW operation, lower limit 22
Temperature, °C:
anode heat sink 160
grid lead 200
cathode lead 100
envelope 250
Resistance in grid circuit, kOm 10

gi-6b(3)00041.jpg
Averaged Pulse-Operation Characteristic Curves:
Uf = 12.6V; Ug = -200 V; Timp = 1 µs; frequency 1,000 imp/s;
_____ anode;
- - - grid-anode

gi-6b(3)00042.jpg
Averaged Pulse-Operation Characteristic Curves:
Uf = 12.6V; Ug = -200 V; Timp = 1 µs; frequency 1,000 imp/s;
_____ anode;
- - - grid-anode

gi-6b(3)00043.jpg
Averaged Characteristic Curves Showing Oscillator Output Power versus Anode Voltage in Continuous-Wave Generation:
Uf = 12.6V; L = 25cm;
- - - (Pa max)

gi-6b(3)00044.jpg
Averaged Anode Characteristic Curves

gi-6b(3)00045.jpg
Averaged Characteristic Curves Showing Oscillator Output Power versus Anode Voltage in Continuous-Wave Generation:
Uf = 12.6V; L = 50cm;
- - - (Pa max)

gi-6b(3)00046.jpg
Averaged Anode-Grid Characteristic Curves