There has been an increasing interest in world wide for the commercialization of broadcasting service using a type of satellites that are capable of providing high elevation angle characteristics over the service area. A typical example is a type of satellite in Highly Elliptical Orbit(HEO).One service provider a U.S. has already launched two of HEO satellites and they are being tested on orbit for the inauguration service in year 2001. We are also in the process of developing the system that uses HEO satellites system providing broadcasting service in Japan. In this paper an overall description of HEO satellite system is given then some of the issues and possible solutions are discussed. Finally the result of field measurement which we have carried out in Chicago using the above mentioned HEO satellite is given.