6N7S / 6H7C / 6N7GT NOS Soviet USSR Russian FOTON TUBES 1pcs./set

Made in USSR,FOTON plant 1956 - 1966.
The measurement results are visible in the photos.
Measurements were performed with a L1-3 tube tester.

Name: 6N7S; Analog: 6N7GT;

Type: Double triode;
Application: LF power amplification;
Cathode type: oxide, indirect heating;
Envelope: glass, miniature;
Filament voltage: 6.3V;
Anode voltage: 300V;
Filament current: 0.76-0.86A;
Anode current: 0.0045-0.009A;
Anode power: 6W;
Grid voltage: -6V;
Differential transconductance: 2.7-3.7mA/V;
Microphnic noise: 400mV;
Gain: 30.0-40.0;
Mass: about 40g.

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