They were used in locally made aircraft like the Wirraway and imported aircraft like the Hudson. The AR8 is part of a set that consists of the AR8 receiver, the AT5 transmitter, and an Aerial Coupling Unit.
All units are in the shape of a cube and can sit on top of each other.
These are connected to a Junction Box and a power supply. There are 2 power supplies for this radio set. A Dynamotor set for 12 or 28 volt DC use, and a mains powered unit for 240 volt use. The receiver is a unique design as it has 2 RF front ends, and a common IF and Audio section. The RF sections are an LF unit and a HF unit and have independent controls, making it easy to switch between 2 stations.