A fully portable apparatus for surveillance of electromagnetic broadcast spectrum and measurement of electromagnetic radiation levels

摘要

A fully portable electromagnetic radiation level measurement system is used for measuring radiation levels of commercial FM-TV broadcasts in the VHF-UHF range, as well as GSM 900-1800 MHz signals from nearby base stations. The system consists of a portable battery operated spectrum analyzer and two high precision wideband biconical antennas. The whole system weights less than 3 kg and can be very easily and time-effectively deployed, executing the required measurements in only a few minutes. The precision of the measurement system is thoroughly studied and accurately determined under laboratory conditions. An extensive survey of measurements is under way in the region of central Macedonia, the city of Thessaloniki and its suburbs, including several sensitive areas such as schools, children playgrounds, kindergartens and high radiation regions, including high-power antenna parks.