This standard applies to lamp generators with an anode dissipation power greater than 25 W intended for power amplification.
GOST 21106.2-1975 Referenced Document
GOST 20412-1975 Oscillator, modulator and regulation tube. Terms and definitions
GOST 21106.0-1975 Oscillator, modulator and regulation tubes anode dissipated power more than 25 W. Method of measurements of electrical parameters. General principles
GOST 21106.2-1975 history
1975GOST 21106.2-1975 Oscillator tubes anode dissipated more than 25 W. Test method for relative level of combinative products