Levels of electric field strength within the immediate vicinity of FM radio stations in Accra, Ghana.
Azah CK, Amoako JK, Fletcher JJ. · 2013
View Original AbstractElectric field levels measured near FM radio stations in Accra, Ghana were far below international reference levels and posed no known hazard.
Plain English Summary
Researchers surveyed radiofrequency electromagnetic radiation at public access points near FM radio stations in Accra, Ghana. Measurements were taken within a 10 to 200 metre radius of each station's base, at a height of 1.5 metres above the ground. Electric field strength ranged from 5.4E−04 V m−1 at FM station 'O' to 7.4E−08 V m−1 at FM station 'D', and power densities ranged from 2.5E−10 to 1.5E−17 Wm−2. These values were described as far below the reference level set by the International Commission on Non-Ionizing Radiation Protection and did not pose any known hazard to the inhabitants of Accra.
Why This Matters
The study focused on publicly accessible locations, measuring fields that residents or passers-by near FM stations might actually encounter. A spectrum analyser and a bi-conical antenna element sensitive and effective within the frequency band of 30 to 300 MHz were used to collect the measurements. The transmission frequencies measured fell within the 88 to 108 MHz range. The researchers noted that the electric field levels found in Accra were comparable with those reported from epidemiological studies conducted elsewhere.
Exposure Details
- Electric Field
- 0.000000074 - 0.00054 V/m
- Source/Device
- 30–300 MHz
Study Details
A survey of the RF electromagnetic radiation at public access points in the vicinity of 20 frequency-modulated (FM) radio stations has been made in Accra, Ghana. The fundamental object was to determine the levels of RF fields from FM broadcast antennae within 10–200 m radius about the foot of the FM base station and at a height of 1.5 m above the ground at selected locations.
A spectrum analyser and a bi-conical antenna element sensitive and effective within the frequency ba...
Results obtained indicated that the levels of electric field strength ranged from 5.4E−04 V m−1 at F...
The electric field levels presented in this work are comparable with those reported from epidemiological studies conducted elsewhere.
Show BibTeX
@article{ck_2013_levels_of_electric_field_834,
author = {Azah CK and Amoako JK and Fletcher JJ.},
title = {Levels of electric field strength within the immediate vicinity of FM radio stations in Accra, Ghana.},
year = {2013},
url = {https://academic.oup.com/rpd/article-abstract/156/4/395/1619023},
}