I. Introduction
FM Broadcast Band Radar, based on the commensal use of the narrow band emissions of the FM broadcast band (88–108 MHz) is highly attractive for developing nations due to existing transmitter infrastructure which lowers potential costs along with other factors such as no need for spectrum licensing and very much lower cost compared to conventional Air Traffic Control (ATC) radar. We report on a purpose-built, multichannel receiver designed to exploit the entire FM broadcast band simultaneously. The receiver has 3 analogue to digital “receiver channels”, that feed a total of 16 coherent digital down converters (DDCs). This allows for the concurrent exploitation of multiple FM broadcast band channels, to provide reference recording and 2 surveillance channels to support, for example, angle of arrival (AoA) measurements.