Radio wave propagation distance is the maximum extent a signal can reach from its source while remaining detectable. This reach varies greatly, from mere feet for some local transmissions to spanning intercontinental distances for high-powered broadcasts. Several factors affect the propagation range, including frequency, transmitter power, antenna characteristics, and environmental conditions.
Understanding the range of electromagnetic radiation is crucial for effective communication, navigation, and remote sensing. Its application spans fields from broadcasting and emergency services to satellite communication and scientific research. Historically, improvements in transmission technology have led to increased signal range, enabling global communication networks.