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GS-35B

TRIODE

The GS-35B triode provides continuouswave generation in external-feedback selfsustained oscillators and amplifiers at up to 1,000 MHz, in circuits with a common point at grid.

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: metal-ceramic.
Cooling: forced air.
Height: at most 177 mm.
Diameter: at most 100.2 mm.
Mass: at most 2.8 kg.

gs-35b(1)1.jpg
A - anode; C - grid; P - heater; KP - cathode and heater

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequency range, Hz 50-200
acceleration, m/s² 59
Multiple impacts with acceleration, m/s² 343
Linear loads with acceleration, m/s² 88
Lowest ambient temperature, °C -60
Relative humidity at up to +40 °C, % 98

BASIC DATA
Electrical Parameters
Heater voltage, V 12.6
Heater current, A 2.65-3.25
Mutual conductance (at anode voltage 2.5 kV, grid voltage change -1 V, anode current 0.4 A), mA/V 25-40
Penetration factor (at anode voltage 2.5 kV, grid voltage change -200 V, anode current 0.4 A), % 0.8-1.2
Operating point (negative grid voltage at anode voltage 2.5 kV, anode current 0.4 A), V 12-6
Interelectrode capacitance, pF:
input 18-24
output, at most 0.12
transfer 3.8-5.0
Warm up time, s, at most 90
Output power, W:
at anode voltage 2.5 kV, anode current 0.7 A, wavelength 60 cm, at least 800
at anode voltage 2.2 kV, anode current 0.8 A, wavelength 30 cm, at least 350
Output power over 500 h of service (at anode
voltage 2.5 kV, anode current 0.7 A, wavelength 60 cm), W, at least
650

Limit Operating Values
Heater voltage, V 11.9-13.3
Anode voltage, kV:
DC 3
instantaneous value 6
Grid voltage, V 400 to +120
Cathode current, A 1.4
Dissipation, W:
anode 1.5x10³
grid 26
Temperature, °C:
anode 200
grid and cathode leads 120

Standard Operating Conditions
  Condition I Condition II
Heater voltage, V 12.6 12.6
Anode voltage, kV 2.2 2.5
Anode current, A 0.8 0.7
Output power, W, at least 350 800
Wavelength, cm 30 60

gs-35b(2)1.jpg
Averaged Anode and Grid-Anode Characteristic Curves:
Uf = 12.6V
_____ anode;
_ _ _ grid-anode

gs-35b(3)1.jpg
Characteristic Curves Showing Output Power versus Anode Current:
Uf = 12.6V; L = 30cm

gs-35b(3)2.jpg
Characteristic Curves Showing Output Power versus Anode Current:
Uf = 12.6V; L = 60cm