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During the past three years, a comprehensive study has been made of the engineering factors underlying the allocation of frequencies for television broadcasting. This work has been carried on by an industry-wide group known as the Television Allocations Study Organization (TASO). This paper outlines the objectives and organization of TASO, and summarizes the more significant findings relating to field strength measurement and analysis, field tests of television reception, laboratory studies of television picture quality, tropospheric wave propagation, and performance of receiving and transmitting equipment. The performance capabilities of UHF and VHF television broadcasting systems are compared.