| 摘要 |
PURPOSE:To connect and use an external antenna dedicated to the short-wavelength band by providing an external antenna terminal exclusively used for the short-wavelength band, and making the input impedance of the terminal low. CONSTITUTION:The external terminal 9 dedicated to the short-wavelength band is connected to the output side of a field-effect transistor 6 through a capacitor 7. Its input impedance, therefore, becomes low, so the external antenna with low impedance exclusively used for the short-wavelength band is connected and used freely.
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