Nowadays the growing number of mobile phones has increased the number of stations needed in order to improve the quality of service for users. This growth of cellular antennas has caused a degree of worry and fear among citizens due to locations where they are installed, ever closer to our homes. The International Commission on Non-Ionizing Radiation Protection (ICNIRP) has established maximum limits that must be met to ensure that no negative effects on health will be generated to people. In Perú, informality regarding delivery of authorizations, control and monitoring of cellular antennas, is one of the causes of insecurity. The uncertainty about the harmful effects that might result in a society surrounded by stations grows. This paper focuses on the design and implementation of a system for measuring non-ionizing radiation of cell phone antennas in order to verify compliance with the maximum permissible limits. The design is made in the downlink ranges bands of 850 MHz and 1900 MHz, and measurement tests were conducted in two stages: at ground level and mounted on an UAV flying around a cell phone antenna.