GSÇA
BEAMPOWER TETRODE
The GSÇA beampower tetrode amplifies RF power.
GENERAL
Cathode: indirectly heated, oxidecoated.
Envelope: metalceramic.
Cooling: forced water.
Height: at most 128 mm.
Diameter: at most 91 mm.
Mass: at most 800 g.
OPERATING ENVIRONMENTAL CONDITIONS  
Vibration loads:  
frequency, Hz  1200 
acceleration, m/s²  59 
Multiple impacts:  
acceleration, m/s²  392 
impact duration, ms  10 
Ambient temperature, °C   60 to +70 
Relative humidity at +35 °C,%  98 
BASIC DATA Electrical Parameters 

Heater voltage (AC or DC). V  26 
Heater current, A  3.13.8 
Mutual conductance (at anode voltage 1500 V, grid 2 voltage 600 V, grid 1 voltage change  10 V and anode current 1.5 A), mA/V  3050 
Gain coefficient (grid i gna 2) (at anode voltage 2,000 V, grid 2 voltage 500 V, grid 2 voltage change 50 V and anode current 1 A)  813 
Output power (at anode voltage 2,500 V, grid 2 voltage 500 V. anode current 2 A, driving power 250 V, wavelength 50 cm), kW, at least  2.2 
Interelectrode capacitance, pF:  
input  2634 
output, at most  0.07 
transfer  1723 
Limit Operating Values  
Heater voltage (AC or DC), V  23.427.3 
Heater starting current, A  5.6 
Anode voltage (DC), kV  2.7 
Grid 2 voltage, V  700 
Driving power, W  300 
Dissipation, W:  
anode  3x10^{3} 
grid 1  30 
grid 2  60 
Anode current (DC component), A  2.6 
Warm up time, s  120 
Operating frequency, MHz  300800 
Anode temperature, °C  110 
Temperature of cathode and grids, °C  150 
Averaged Anode Characteristic Curves:
U_{f} = 26V; U_{g2} = 600V
Averaged AnodeGrid Characteristic Curves:
U_{f} = 26V; U_{a} = 2.5kV