PURPOSE: To allow the antenna system to operate an electrically independent antenna action by providing two antennas insulated with each other and two feeding points to connect the antennas to an antenna main body.

CONSTITUTION: Antenna sections A, B insulated with each other are provided to an antenna main body 1 and feeding points (a), (b) for connection are provided. The section A is made up of a spiral coil spring as a conductor, an integrated forming part 3 with a plastic, and a helical coil spring 9 placed on its upper end and they are tightened by a metallic fixture 7 to connect the section 3 and the spring 9 electrically. Furthermore, the section B is made up of an antenna element 2, an electric insulation tube 4 and an electric insulation part 3' made of a plastic only and the sections A, B are coupled via the plastic insulation part C. Thus, two independent antennas are provided to one antenna so as to made the transmission reception sensitivity in the containing state and in extraction state is made constant thereby avoiding crosstalk.