Field strength intensity measurement of a Radio station for Frequency and coverage range inferences and human exposure index

Abstract

In this research, the measurements of the field strength intensity of a radio station (ORISUN FM 89.5 MHZ) and its nearby locations within its coverage area were taken. This was taken to determine the frequency range, coverage area, field strength and power density measurements of the frequency modulation (FM) station and to ascertain whether its propagating frequency is within the radiofrequency (RF) protection guidelines. The result revealed that the frequency of the FM station did not reach all expected coverage areas in Ile-Ife and also that no mutual interference existed within the coverage areas. It also indicated that the RF propagation is within the protection guidelines of broadcasting stations and not dangerous to residents. The radiofrequency safety recommendations for the field strength and power density were not exceeded in all the locations covered. The highest values could be linked with other antennas. However, this research study provided radio station operators with information on environmental RF fields that will help ensure the prudent and safe operation of amateur facilities.