An SDR-based multistation FM broadcasting monitoring system

Abstract

In a country like Indonesia which still upholds eastern culture and religion norm, the content of FM broadcasting stations considered important for mentality development of the society. A committee to monitor broadcasting content has been established. Its responsibility, among others, is to manage complains on negative broadcasting content. Currently, the commissioners must visit the FM broadcasting studios to compile evidences, which is can be very costly since the location of the studios can be far (>200 km away) from the committee headquarter. We propose a system to remotely monitor the content of FM broadcasting stations. By using this system, commissioners do not have to visit the stations, instead they monitor them remotely from the headquarter. We just have to put the system in the area we want to monitor (an area can be a city wide with several FM stations) and send the broadcasting content via internet. In our previous monitoring system, we use one digital FM tuner that can be used to monitor (including recording the content) one station at a time. In order to monitor more than one station at the same time (recording some stations), we propose an SDR (Software Defined Radio)-based monitoring system. Combined with OpenWebRX, we can monitor some FM broadcasting stations at the same time. The system accessible via web browser which can be used by users to monitor up to 4 stations.