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Abstract. Radiation pattern is an important parameter of the of the antenna performance. This parameter needs to be measured not only accurately but also as fast as possible. For this purpose, the automatic measurement system has been developed. In this research, the system is implemented to analyse the radiation characteristic of Yagi antenna by measuring its radiation pattern. The measurement result of the patterns is compared to those of computer simulation as well as table characteristics of Yagi antenna. For this purpose, a Yagi antenna is designed and realized as the radiation pattern measurement object. Then, the students conduct the experiment to measure and analyse the effect of parasitic elements to the radiation pattern performance of the antenna. The questionnaire is carried out as the method of the research and directed to the students of the Telecommunication Study Program, Bandung State Polytechnic.