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Cathode: directly heated, tungsten. OPERATING ENVIRONMENTAL CONDITIONS Ambient temperature, °C -60 to +70 Relative humidity at up to +25 °C, % 98 Gain coefficient (at grid voltages 0 and -2 V and anode current 20 mA) 144-176 Anode current (at anode voltage 2 kV and grid voltage -2 V), mA 16-36 Interelectrode capacitance, pF: Output power (at anode voltage 1.5 kV and anode current 150 mA), W, at least: at frequencies up to 15 MHz 135 Grid current (DC component), mA 50 |