GI-41

TRIODE

The GI-41 triode generates and amplifies RF oscillations with a peak output power of up to 1.5 kW with anode modulation, at frequencies up to 3,000 MHz.

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic.
Height: at most 45 mm.
Diameter: at most 25.8 mm.
Mass: at most 36 g.

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz	1-1,000
acceleration, m/s²	98
Multiple impacts:
acceleration, m/s²	1,470
impact duration, ms	10
Single impacts:
acceleration, m/s²	4,900
impact duration, ms	10
Ambient temperature, °C	-60 to +125
Relative humidity at +35 °C, %	98

BASIC DATA Electrical Parameters
Heater voltage (AC or DC), V	6.3
Heater current, A	1.2-1.4
Mutual conductance (at anode voltage 450 V, peak anode current 50 mA), mA/V, at least	23
Inverse grid current, µA, at most	1.5
Peak power output (at peak anode voltage 2.5 A, pulse duration 1.5 µs, 1 /duty factor 200, wavelength 10 cm), kW, at least	1.5
Interelectrode capacitance, pF:
input	5.5-7.5
output, at most	0.05
transfer	2.5-3

Limit Operating Values
Heater voltage (AC or DC), V:
maximum	6.6
minimum	6
Peak anode voltage, kV	3
Grid voltage, V:
maximum	0
minimum	-250
Dissipation, W:
anode	40
grid	0.8
Maximum drive power, W	350
Peak anode current, A	2.6
Peak grid current, A	1.25
Envelope temperature, °C	200
Warm up time, s	60
Operating frequency, MHz	3,000
Maximum pulse duration, µs	1.5
Minimum 1/duty factor	200

Standard Operating Conditions (Anode Keying)
	Self-excited oscillator	Amplifer
Heater voltage, V	6.3	6.3
Peak anode voltage, kV	2.8	2.8
Peak anode current, A	2.5	2.5
Pulse duration, µs	1.5	1.5
1/duty factor	200	200
Peak output power, W	1,500	1,500
Peak drive power, W	—	350
Frequency, MHz	3,000	3,000

Averaged Peak Characteristic Curves:
U_f = 6.3V; t = 1µs; pulse frequency 1,000 Hz;
_____ anode;
_ _ _ anode-grid

Averaged Peak Characteristic Curves:
U_f = 6.3V; t = 1µs; pulse frequency 1,000 Hz;
_____ anode-grid;
_ _ _ grid

Averaged Characteristic Curves Showing Oscillator Output Power:
U_f = 6.3V; U_{a imp} = 2.8kV; T = 500;
_____ peak oscillator power (P_imp);
_ _ _ gain coefficient (R_a)

Averaged Characteristic Curves in Amplification Mode:
U_f = 6.3V; U_{a imp} = 2.8kV; t = 1µs; Q = 500;
_____ peak oscillator power (P_imp);
_ _ _ efficiency (n)

Averaged Dynamic Characteristic Curves:
U_f = 6.3V; t =1.5 µs; T = 200