DIN IEC 60487-2-4:1988-08 Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; frequency modulators; identical with IEC 60487-2-4, edition 1984
1988DIN IEC 60487-2-4:1988-08 Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; frequency modulators; identical with IEC 60487-2-4, edition 1984
1988DIN IEC 60487-2-4:1988 Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; frequency modulators; identical with IEC 60487-2-4, edition 1984