GS31B 1200 Watt VHF/UHF Power Triode Tube

Conclusion :

• Estimated price : USD 120
• The GS-31b triode fulfills generation and amplification functions in grounded-grid circuits in continuous wave operation in the decimetric and metric wavelength ranges. It is physically identical to the GS-1b, but with minor electrical differences.

GENERAL
Cathode: indirectly heated, dispenser, oxide-coated.
Envelope: metal-ceramic.
Cooling: forced air.
Height, mm, at most:	with heat sink: 147
	without heat sink: 134
Diameter, mm, at most:	with heat sink: 100.2
	without heat sink: 65
Mass, kg, at most:	with heat sink: 1.2
	without heat sink: 650

A - anode; C - grid; KP - cathode and heater; P - heater

ENVIRONMENTAL OPERATING CONDITIONS
Vibration loads:
frequency, Hz	5-2,000
acceleration, m/s²	98
Multiple loads with acceleration, m/s²	343
Single impacts with acceleration, m/s²	1,470
Linear loads with acceleration, m/s²	490
Ambient Conditions:
Temperature, °C	-60 to +70
Relative humidity at up to +40 °C, %	98

NOMINAL ELECTRICAL PARAMETERS
Heater voltage, V	12.6
Heater current, A	3.4
Mutual conductance (Va = 2KV, Ia = 250mA, change in Vg = 1V), mA/V, at least	22
Operating point (negative Vg with Va = 2KV, Ia = 250mA), V	9
input capacitance, pF	21.5
output capacitance, at most, pF	4.5
transfer capacitance, pF	0.12
Warm up time, s, at most	120
Output power, Va = 1.8KV, Ia = 500mA, wavelength 60 cm, W:	>360
Output power, Va = 1.7KV, Ia = 700mA, wavelength 30 cm, W:	>180
Designed Tube Life (hours)	>1000

ELECTRICAL PARAMETER LIMITS
Heater voltage, V	12-13.2
Heater current, A	3.1-3.7
Operating point (negative Vg with Va = 2KV, Ia = 250mA), V	6-12
input capacitance, pF	19-24
output capacitance, pF	3.8-5.2
Maximum CW Anode voltage (Va), KV:	3
Maximum Instantaneous value Anode voltage (Va), KV:	6
Instantaneous value Grid voltage (Vg), V	-400 to +120
Maximum CW Cathode current (Ic), A	1.4
Anode Dissipation, W:	1.0x103
Grid Dissipation, W:	22
Temperature at anode lead, °C	200
Temperature at cathode and grid leads, °C	120
Temperature at external ceramic parts, °C	250
Wavelength,cm	28-100

Averaged Characteristic Curves: Uf = 12.6V; _______ anode; _ _ _ _ grid-anode	Averaged Characteristic Curves: Uf= 12.6V; _______ anode; _ _ _ _ grid-anode
Averaged Characteristic Curves Showing Output Power and Efficiency versus Anode Current: Uf = 12.6V; L = 30cm; _______ output power (P); _ _ _ _ efficiency (n)	Averaged Characteristic Curves Showing Output Power and Efficiency versus Anode Current: Uf = 12.6V; L = 30cm; _______ output power (P); _ _ _ _ efficiency (n)