Sensitivity adjustment means and a radio communication device

The present invention provides a radio transceiver transmits and receives radio signals of sensitivity between the antenna and an external device for adjusting the sensitivity adjustment means, the sensitivity adjusting means comprising: sensitivity adjusting means includes a shield portion through the obstruction radio wave and a radio wave lens through the open portion; and an adjusting member moving mechanism that causes the sensitivity adjustment member relative to the antenna movement, changing the shield portion sensitivity adjustment member and the opening portion with respect to the position of the antenna, is shielded range of the sensitivity adjustment means shielded antenna adjusted, it is possible to adjust the sensitivity of the antenna of the radio transceiver.