Patent ID: 7206561

Claim:
A radio equipment comprising: a host controller; a radio module connected to said host controller; a first antenna; a second antenna to which an attenuator is connected; and a switch connected to said host controller so as to change over said first antenna and said second antenna; wherein said host controller controls said switch to select either said first antenna or said second antenna, so that when said second antenna is selected, the intensity of a signal input from said second antenna to said radio module and the intensity of a signal output from said radio module to said second antenna are relationally controlled, and wherein said host controller controls said attenuator to control input receiver coverage of said second antenna to be narrower than input receiver coverage of said first antenna, and wherein when said radio equipment transitions from a communication-disabled state to a communication-enabled state, the antenna with attenuator is changed to retrieve the quantity of attenuation of said attenuator forbidding said radio equipment from receiving a radio wave transmitted from a far specific radio equipment out of ambient radio equipments and set said attenuator to the retrieved quantity of attenuation to thereby make said radio equipment transition to a state forbidding said radio equipment from receiving the radio wave transmitted from said far specific radio equipment.