Affectionately known as the "Angry 5," the AN/GRR-5 compact mobile shortwave receiver was used widely in the United States military during the 1950s and 1960s. It consists of two chassis: the model R-174/URR receiver and model PP-308/URR power supply. The two-compartment cabinet has the model number CY-615/URR. Here is the complete radio as normally seen, with the two chassis inside the cabinet.