International Efforts to Control Radio Spectrum Pollution from Motor Vehicles 730058

Electrical interference-both radiated and conducted-has grown manyfold in the last 15 years and is characteristically alike the world over in seriousness and difficulty of control. International cooperation in control began in 1933, was interrupted by World War II, and has more recently accelerated and broadened in scope. The U.S. automotive industry is affected principally by international legislative restrictions on spurious radiations of radio energy from internal combustion engines. By virtue of its participation in international negotiations, the United States has made contributions to the international standard (CISPR Recommendation 18/2), has furthered uniform requirements, and has strengthened its own standard (SAE J551b). IEEE methods are now under consideration for near-field measurements.

This paper shows the need for international cooperation, the organization of CISPR (The International Special Committee on Radio Interference), the method of information dispersal between the IEEE-CISPR-SAE, and provides the status of radio interference projects now under study together with the course of future investigation. It provides the complete text of CISPR Recommendation 18/2 on this subject and the text of the current SAE J551b covering motor vehicles.