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The GS-37 triode is a frequency multiplier in the centimetric wavelength range.

Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic.
Height: at most 28.7 mm.
Diameter: at most 15.4 mm.
Mass: at most 8 g.


Vibration loads:
frequencies, Hz 2-2,500
acceleration, m/s² 98-147
Multiple impacts with acceleration, m/s² 735
Single impacts with acceleration, m/s² 4,900
Linear loads with acceleration, m/s² 980
Ambient temperature, °C -60 to +100
Relative humidity at +40 °C, % 96-98

Electrical Parameters
Heater voltage (AC or DC), V 6.3
Heater current, mA 290-350
Anode voltage (DC), V 250
Anode current (DC), mA 10
Inverse grid current (at negative grid voltage 2 V, anode DC current 5 mA), µA, at most 2
Oscillator power (at heater voltage 6.3 V), mW, at least 35
Warm up time, s, at most 40
Interelectrode capacitance, pF:
input 2-3.2
output, at most 0.01
transfer 1.4-2.2

Limit Operating Values
Heater voltage, V:
maximum 6.6
minimum 6
Maximum anode voltage (DC), V 300
Grid voltage (DC), V:
maximum 0
minimum 20
Maximum power delivered to anode, mW 2.5-103
Maximum grid dissipation, mW 100
Maximum RF power delivered to cathode-grid tuned circuit (in frequency multiplication mode), mW 200
Minimum power by the end of guaranteed life, mW 26
Anode current, mA:
maximum 12
minimum 5
Maximum grid current, mA 2
Frequency, MHz:
maximum 8,000
minimum 6,500
Maximum envelope temperature, °C 200

Averaged Anode Characteristic Curves:
Uf = 6.3V

Averaged Anode-Grid Characteristic Curves:
Uf = 6.3V

Characteristic Curves Showing Output Power and Gain Coefficient versus Anode Current in Frequency Tripling Mode:
Uf = 6.3V; Pin = 200mW; L = 4.3cm;
_____ P(W);
_ _ _ Kp

Characteristic Curves Showing Output Power and Gain Coefficient versus Input Power in Frequency Tripling Mode:
Uf = 6.3V; Ua = 250V; Ia = 10mA; L = 1.3cm;
_____ P(W);
_ _ _ Kp