CONSTRUCTION OF A LOW-POWER RATING FM TRANSMITTER RADIO WITH AUDIO CONSOLE FOR COMMUNITY BROADCAST AND SECURITY ALERT
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
The security challenges experienced in
different communities of Nigeria require initiatives from
every stakeholder, hence the development of this miniaturized
FM transmission console for information dissemination
within a localized community. The early transmitter for radio
broadcasting was so bulky and laborious that they occupied
large space and heavy circuitry. The circuits were mainly
designed with valves and other active components, which are
responsible for the large size. With the advent of
semiconductor materials such as transistors and integrated
circuits, electronic equipments are now becoming
miniaturized such that small transmitters are now becoming
handy and compact. In line with this, a complete radio
broadcasting equipment that is compact and locally designed
is constructed in this research. The system units are of two
categories namely: the audio console for processing voice
with music mixer and the transmitter unit where the center
frequency is generated. This project is aimed at serving
community such as Estates or villages for broadcasting
urgent information using a small radio broadcasting FM
transmitting at 107.0 MHz with a power rating of 1 watt and
covers a distance of 1 kilometer irrespective of directivity. The
output audio signal was tested for different hours of the day
and production was received with noticeable voice output. The
radio broadcasting transmitter can also be used to
disseminate information within large industries, hospitals and universities. The constructed device is recommended for
security alerts in areas where security challenges are
currently taking place in the Nigeria.