TESTED. 6P3S / 6L6GT / 6L6 tubes. REFLEKTOR. 1971. 
TEST: Uh=6,3V  Ug1=-14V   Ua=250V  Ug2-250V
 Ia=80mA   S=6,4mA/V

A beam tetrode with an oxide cathode.
Used in the terminal stages of receivers and as a tube oscillator in low-power transmitters
Filament voltage, V 6.3
Anode voltage, V 250
The screen grid voltage, V 250
The bias voltage on the control grid, V -14
Filament current, mA 900 +- 60
Anode current, mA 72 +- 14
The current in the circuit of screen grid, mA not more than 8
Steepness, mA/V      6 +- 0.8
Output power 5.4 W
Internal resistance, KOhms 22.5 
Gain 13.5
Mode tube 6П3С in power amplifiers class "C"

The anode voltage , V 450
The bias voltage on the control grid, V -50
The voltage on the screen grid , V 250
Anode current, mA 95
The current in the circuit of screen grid, mA 9
Excitation power, W 0.25 +- 0.5
The amplitude of the excitation voltage, V 80
Output power, W 20 - 25

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