The bid is for 4 russian tubes.
The tubes are never used.
Military equipment
6Ж4 specifications
at Un = 6.3 V, Un = 300 V, Un2 = 150 V, Un3 = 0 V, Rk = 160 Ohms
Name 6Zh4
Glow current, mA 450 ± 25
Anode current, mA 10.25 ± 2.25
Anode current at the beginning of the characteristic (at Uc1 = - 6 V), μA ≤ 900
Second grid current, mA 2.2 ± 1
Reverse current of the 3rd grid (at Uc3 = - 2 V, μA ≤ 6
Leakage current between cathode and heater, μA ≤ 20
Slope, mA / V: 9 ± 2
The steepness of the characteristic at Un = 5.7 V, mA / V: ≥ ≥ 5.5
Operating hours, h ≥ 2000
Criteria for evaluation:
reverse current of the 3rd grid (at Uc3 = - 2 V), μA -
slope of the characteristic on the first grid, mA / V ≥ 5.8
Operating Limits 6Zh4
Name 6Zh4
Filament voltage, V 5.7 - 6.9
Anode voltage, V 330
The voltage of the second grid, V 165
Voltage between cathode and heater, V: 100
Power dissipated by anode 6Zh4, W 3.3
Power dissipated by the second grid, W 0.45
Resistance in the circuit of the 1st grid with automatic bias, MΩ 0.5
Ambient temperature, ° C −60 ... + 70