Design and Construction of a Low-Power Frequency Modulation (FM) Transmitter for the Training Radio

This project presents the design and construction of a 50 W frequency modulation transmitter for the Federal University Oye-Ekiti, Ikole campus training radio, as a means of providing more practical knowledge on the communication aspects of electrical and electronics engineering. The FM transmitter was achieved with the help of the combination of the digital and the analog components arranged on two circuit boards. The modulation scheme used a direct setup of the intermediate carrier established at 88.1 MHz and the transmission carrier at 88.1 MHz. Using a 150W DC power supply, the transmitter output of a 50-watt signal was achieved at a bandwidth of 88 MHz to 108 MHz. This receptivity level translates to successful audio reception at a distance of 5 km from the transmitting antenna. This project provides a useful tool and practical knowledge for communication engineering in the Ikole Campus of the Federal University, Oye-Ekiti.   Research Gap Although frequency modulation (FM) transmitters are widely studied and implemented globally, there exists a significant gap in the development of low-cost, locally constructed FM transmitters specifically tailored to educational and training purposes in Nigerian universities. Most campus radio stations in Nigeria either rely on commercial equipment or face operational limitations due to cost, technical know-how, or infrastructural challenges. Moreover, few documented projects focus on transmitter designs that are optimized for mid-range power output (around 50W) — a power range that is suitable for campus-wide or community-based broadcasting. Additionally, there is limited practical literature or case studies demonstrating the design, construction, and testing of such transmitters within the context of Nigerian institutions, particularly with consideration for: Local component availability Energy efficiency in low-resource environments Integration with academic training curricula Compliance with Nigerian Broadcasting Commission (NBC) standards This project therefore aims to fill this gap by designing and constructing a functional, efficient, and replicable 50W FM transmitter, explicitly for the Training Radio Station at FUOYE Ikole Campus, thereby contributing to both academic learning and technical capacity development within the institution.