Development of a Simple SDR-based System for Monitoring of VHF and UHF Radio Frequency Bands

The main goal of this paper is to present the development and testing of a simplified SDR-based system for monitoring the VHF and UHF radio frequency band for the territory of the town of Gabrovo. The system is based on the widespread SDR module with ICs RTL2832U/R820T. The principle of the system implementation and test results from its local and remote use in monitoring signals from local VHF radio stations and the amateur radio frequency range from 144 to 146 MHz are presented.