An antenna system including an antenna capable of responding to a horizontally-polarized-wave and a vertically-polarized-wave and receives digital television broadcasting signals. The system further includes: a memory section to store an outdoor reception program and an indoor reception program; an acquisition section to configure in the antenna a horizontally-polarized-wave reception mode or a vertically-polarized-wave reception mode, and to acquire reception information of the television broadcasting signals; a determination section to determine whether the antenna is installed outdoors or indoors; a configuration section to control the outdoor reception program stored in the memory section when the determination section determines that the antenna is installed outdoors, and the indoor reception program stored in the memory section when the determination section determines that the antenna is installed indoors; and a control section to control the reception of the television broadcasting signals by the antenna system through the program configured.