Radio interference characteristics of overhead power lines and high-voltage equipment. Description of phenomena|Radio disturbances, Noise (spurious signals), Overhead power-line fittings, Overhead power lines, Electric power transmission lines, High-voltage equipment, Overhead line conductors, Electric insulators, Electric substations, Electric discharges, Electric sparks, Electrical properties and phenomena, Field strength (electric), Radiofrequencies, Rated voltage, Direct-current power transmission, Climate, Interference suppression, Mathematical calculations, Statistical distribution, Electrical measurement, Television broadcasting, Sound broadcasting