GOST 15150-1969 Machines, instruments and other industrial products. Modifications for different climatic regions. Categories, operating, storage and transportation conditions as to environment climatic aspects influence
GOST 17168-1982 Filters electrical octave and third-octave. General technical requirements and methods of testing
GOST 18286-1988 Three-program wired broadcasting receivers. General specifications*， 1988-12-22 Update
GOST 23849-1987 Domestic radioelectronic equipment. Methods of measuring electric parameters of sound frequency signal amplifiers*， 1987-12-22 Update