GI26B
TRIODE
The GI26B triode provides power amplification in pulsed operation with anode keying.
GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glasstometal with grid rings.
Cooling: forced air.
Height: at most 530 mm.
Diameter: at most 182 mm.
Mass: at most 21 kg.
OPERATING ENVIRONMENTAL CONDITIONS  
Vibration loads:  
frequency, Hz  50 
acceleration, m/s²  24 
Ambient temperature, °C  60 to +55 
Relative humidity at +40 °C, %  9598 
BASIC DATA Electrical Parameters 

Filament voltage (AC or DC), V  12.6 
Filament current, A  530590 
Resistance of heated cathode, Om  0.002 
Mutual conductance (at anode currents 6 and 10 A, anode voltage 2 kv), mA/V  85110 
Gain coefficient (at anode voltages 2 and 3 kV, anode current 6 A)  2838 
Interelectrode capacitance, pF:  
input, at most  185 
output, at most  3 
transfer, at most  75 
Peak power output, MW  3 
Limit Operating Values  
Filament voltage (AC or DC), V  1113 
Filament starting current, A  900 
Peak anode voltage, kV  30 
Dissipation, kW:  
anode  20 
grid  2 
Anode temperature, °C  180 
Temperature at glass and glasstometal seals, °C  150 
Averaged Characteristic Curves:
U_{f} = 12.6V;
_____ anode;
_ _ _ gridanode;
— . — (P_{a max})