: In both settings, noise levels are highest during the day (6 AM – 4 PM) and lowest during evening and night hours. Key Factors Influencing Noise

: Environmental noise typically ranges between 50.1 dB(A) and 60.0 dB(A) . Studies in mixed-use urban planning areas (combining residential and commercial development) show significantly higher noise levels compared to pure residential areas.

Environmental noise is categorized by land use, and power line noise specifically contributes to the background "man-made" radio noise profile.

Field measurements of power line noise consistently show significant variances based on urbanization. Conducted environmental noise levels in than those measured in urban areas , often exhibiting differences of up to 20 dB. Comparative Noise Levels

Power line noise is primarily "man-made" and stems from hardware issues or environmental physics rather than the power itself. Power Line Noise - ARRL