A pentode with an oxide cathode - 6Zh12C serves to amplify high-frequency signals, was used and is still used in highly sensitive long-distance communication equipment. The feature of the presented electrovacuum device is a glass bulb, which has a shaped configuration and is equipped with a pin, octal, six-contact socket. In the period from 1970 to 1985, the radio lamp was produced at specialized (military) factories of the former Soviet Union.
• Increased voltage applied to the filament: 10 V.
• Constant, nominal current in the filament circuit: 320 mA.
• Standard value of the voltage applied to the anode: 250 V.
• Average nominal current in the anode circuit: 5.5 mA.
• Voltage on the third control grid: 0 V
• Voltage on the second stabilizing grid: 135 V.