The G-811 triode is used as an oscillator in RF equipment. Equivalent to the 811A. Tube was made in the 197x years, old anode construction with getter. NOS and never used before!

Name: G-811;

Type: triode;

Cathode type: oxide, indirect heating;

Brief application: oscillation;

Envelope: glass with base;

Cooling method: air;

Dimensions: 167mm x 62mm;

Mass: 100 g;

Filament voltage: 6.3 V;

Filament current: 3.75 - 4.25 A;

Gain coefficient: 144 to 176;

Output power: 40 W;

Maximum anode voltage: 5 kV;

Maximum operating frequency: 110 MHz.