| 摘要 |
A radio equipment, wherein an attenuator ( 10 ) is inserted between antennas ( 91, 92 ) and a radio module ( 2 ), and output and input sensitivities are raised and lowered simultaneously so as to keep the balance of a radio covering range with an input receiver coverage at a constant, and the antenna ( 91 ) and the antenna ( 92 ) with attenuator are switched over by a switch ( 8 ) to increase and decrease the radio coverage range and input receiver coverage while keeping the balance of the dynamic radio coverage range with the input receiver coverage.
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