| 摘要 |
PURPOSE:To reduce troubles of replacement of an antenna by providing a conductor tube which has a feeding plug in one end and has a plug to an external antenna in the other end and setting an antenna pole in this conductor tube so that this antenna pole is freely inserted to the pulled out from the conductor tube. CONSTITUTION:When a radio equipment is used as a portable, an antenna pole 2c is pulled out from a conductor tube 2d, and it is operated as a half-wavelength dipole antenna when an external connection plug 2b is opened. When the external antenna is used, the pole 2c is stored in the conductor tube 2d, and a coaxial cable is constituted with the pole 2c as a core and as the conductor tube 2d as an outside conductor when the pole 2c is brought into contact with an antenna pole receiving metal 2f, and power is supplied from a feeding plug 2a to the external stationary antenna through this coaxial cable and the plug 2b. Thus, troubles of replacement of the antenna are reduced, and the radio equipment can be used while attaching always the portable radio antenna to the radio equipment body. |
