837 (G-837/G837) VSI Beam Tetrode Tube (NOS)

837 (G-837/G837) VSI Beam Tetrode Tube (NOS)

All tubes new, military equipment and have "OTK" mark. Near equivalent: 837 and PK44. The tube is manufactured by the Foton, Tashkent, Kazakhstan (now new factory is Ulyanovsk).

New Old Stock * No Longer available for export
MFR: VSI  (Russia)

General characteristics:
Name: G-837 (G837)
Filament voltage, V: 12.6
Heater current, A: 0.7
Type of current: AC
Anode voltage, V: 500
Second grid voltage, V: 0
Voltage grid of the first, V: -85
Anode, mA: 60
Grid current second, mA: 30
Steepness, mA/V: 3,4
Input capacitance, pF: 16
Internal resistance, kOm: 10
Output capacity, pF: 10
Maximum power dissipation second grid, W:8
Output power, W: 20