BASIC DATA Electrical Parameters
Filament voltage, V	14
Filament current, A	230-260
Mutual conductance (at anode voltage 1.4 kV, grid 2 voltage 1 kV, anode currents 7 and 11 A), mA/V	110-140
Gain coefficient (grid 1 -grid 2) (at anode voltage 1.4 kV, grid 2 voltages 1 and 1.2 kV, anode current 7 A)	7-10
Anode current at zero grid 1 voltage (at anode voltage 2 kV, grid 2 peak voltage 1.5 kV), A, at least	16
Inerelectrode capacitance, pF:
input, at most	470
output, at most	75
transfer, at most	5
Negative cutoff voltage (at anode voltage 10 kV, grid 2 voltage 1.5 kV, anode current 0.5 A), V, at most	350
Output power (at anode voltage 12 kV), kW, at least	80

Limit Operating Values
Filament voltage, V	13-14.5
Anode voltage (DC), kV	12
Negative grid 1 voltage, kV	1.5
Grid 2 voltage (DC), kV	1.8
Filament starting current, A	360
Dissipation, kW:
anode:
at cooling air temperature +30 °C	45
at cooling air temperature +50 °C	35
grid 2	1.8
grid 1	1.0
Operating frequency, MHz	75
Anode temperature, °C	250
Temperature at ceramic parts and seals, °C	200

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 1.5kV;
_____ anode;
_ _ _ grid-anode;
— • — P_{a max}

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 1.75kV;
_____ anode;
_ _ _ grid-anode;
— • — P_{a max}

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 2kV;
_____ anode;
_ _ _ grid-anode;
— • — P_{a max}

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 1.5kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 1.75kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2

Averaged Characteristic Curves:
U_f = 14V; U_g2 = 2kV;
_____ anode-grid;
_ _ _ grid 1;
- . - grid 2

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