Administrative Rules on the Establishment of Earth Stations by Satellite Broadcasters Article 15
The angle of elevation of an earth station's transmission antenna shall not be below five degrees so as to ensure public safety and to avoid interference with other communications.
中文原文 衛星廣播電視事業設置地球電臺管理辦法第15條
地球電臺發射天線之仰角不得低於五度，以確保公眾安全及避免干擾其他通信。