MULTI-FUNCTION ARRAY RADAR MAR 1962 - Development authorized on phased array radar. MAR 1963 - Start of site preparation at White Sands Missile Range. JUN 1964 - First "power on" and start of test program. SEP 1964 - First automatic track of missile target. MAR 1965 - Shutdown of transmitter for design changes. Receiver tests continue. OCT 1965 - First full power radiation from full array with rebuilt transmitter. DEC 1965 - Completed beam width measurements, radar range capability, and absolute track accuracy evaluation. OCT 1966 - First demonstration of autonomous multi-function operation tracking a satellite target. JUN 1967 - First demonstration of multiplex-frequency tracking of multiple targets (PERSHING). SEP 1967 - Completed demonstrations of continuous operation, CHAFF cloud survey, and fine frequency techniques. Terminated test program 9/30/67. (SENTINEL Evaluation Agency continued operations at reduced level as a training facility through May 1969.)