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Research Article Open access CC BY 4.0

Tropospheric Influence on Ultra-High Frequency (UHF) Radio Waves

Joel Iloke, Ukoette Jeremiah Ekah, Igwe Ewona

Asian Journal of Research and Reviews in Physics · pp. 48–57 · Published 13 Dec 2022

10.9734/ajr2p/2022/v6i3121

Abstract

This research investigates the effects of temperature and relative humidity on UHF signals. A spectrum analyzer was used in measuring UHF signals while a digital thermometer and hygrometer was used in measuring temperature and relative humidity, respectively. From results obtained, relative humidity had no significant effect on measured path loss while a positive correlation coefficient was obtained between temperature and measured path loss. This implies that an increase in temperature will lead to a decrease in received signal strength of UHF signals. Furthermore, a path loss propagation model for Calabar (PL = 37.920 + 2.796T + 0.290R + ) was obtained using multiple regression analysis and we believe that the obtained result will be useful to radio engineers for UHF signal propagation in the study terrain.

UHF signals radio waves temperature relative humidity path loss

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