GM-4B

Filament current, A

39±4

Cathode emission current (impulse, at U_a=U_g1=U_g2=300 V), A

≥9

1^st grid voltage (at U_a=9 kV), V

-31±9 (-50±15)

Transconductance, mA/V

24±4

1^st grid to 2^nd grid gain ratio

12.5±2.5

Interelectrode capacitance, pF

grid-to-cathode

anode-to-cathode

grid-to-anode

≤80

≤16.5

≤0.8

Filament starting current, A

60

Filament voltage, V

4.8..5.2

Anode voltage, kV

9

2^nd grid voltage, kV

1,2

Anode power dissipation, kW

9

2^nd grid power dissipation, W

80

1^st grid power dissipation, W

50

Glass and glass-to-metal junction temperature, ^oС

150

Anode temperature, ^oС

250