| 摘要 |
PURPOSE:To easily control the transmission output with excellent workability by forming an antenna and a device main body so as to be used separately and integratedly, and inserting an attenuator to the connection part. CONSTITUTION:The antenna 1 and the device main body 3 are provided separately and the antenna 1 and the device main body 3 are connected by a connection part 1a of the antenna 1. A spacer being the attenuator 2 to switch the polarized wave of the antenna 1 is built in the connection part 1a of the antenna 1 and the attenuator 2 is obtained by giving the attenuation characteristic to the spacer itself or adding a spacer having the attenuation characteristic. Thus, the transmission output is controlled easily by removing the antenna 1 and the device main body 3 and replacing or adjusting the attenuator 2 built in the antenna connection part 1a. Further, the reception input is controlled at the same time.
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