This work evaluated the path loss ad received signal strength level (RSSL) of a GSM (MTN) Network at 900MHz in Calabar South- Eastern Nigeria using Drive test. Low Quality of signal (QOS) was discovered in Calabar South within this period of investigation. Through the use of Transmission Evaluation and Monitoring System (TEMS) equipment, Global Positioning System (GPS) and Laptop Computer, a drive test was carried out around Calabar South. The results from the Matlab software simulation showed a considerable drop in the Receive Signal Strength Level (RSSL) in all sectors under investigation due to increase in population, building heights and vegetations. It is recommended that the frequency
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