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LY1DQ ham radio resources
TRIODE GS-35B
The GC-35B triode provides continuous-wave generation in external-feedback self-sustained oscillators and amplifiers
at up to 1000 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.
OPERA TING ENVIRONMENTAL CONDITIONS
CONNECTION
OF ELECTRODES
WITH LEADS
frequency range, Hz 50-200
acceleration, m/s
Multiple impacts with acceleration, m/s
Linear loads with acceleration, m/s
2
2
59
2
343
88
Lowest ambient temperature, °C -60
Relative humidity at up to +40 °C, % 98
BASIC DA TA 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
Ia, Ig, A
Averaged Anode and Grid-Anode
Characteristic Curves:
U1 = 12.6 V
——— anode;
- - - - - grid - anode
Created by L Y3NML
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LY1DQ ham radio resources
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 1.5-10
3
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
Characteristic Curves showing Output
Power versus Anode Current:
U1 = 12.6V , λ = 30 cm
Characteristic Curves showing Output
Power versus Anode Current:
U1 = 12.6V , λ = 60 cm
Created by L Y3NML
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