A frequency agile radio configured to determine an estimated coverage area of a primary transmitter is disclosed. The radio includes at least one position device configured to determine a position coordinate of the radio and generate a corresponding position signal. The radio also includes at least one frequency agile receiver configured to measure a power of a transmission at least one frequency and generate a corresponding signal. Additionally, the radio includes at least one controller in communication with the at least one position device and the at least one frequency agile receiver. The controller is configured to determine a plurality of position coordinates of the radio and a plurality of signal power datums. The controller is also configured to estimate the coverage area of the at least one primary transmitter, based on the determined plurality of position coordinates and the determined plurality of signal power datums.