A receiver for receiving a radio wave modulated according to a digital signal, the receiver comprising: a first reception unit having a first switching-combining unit for receiving a first plurality of reception signals and operable in a first mode to output one of the first plurality of reception signals and operable in a second mode to output a combined signal of the first plurality of reception signals, wherein said first reception unit comprises a first antenna set including a plurality of directional antennas (21A; 21B); a second reception unit having a second switching-combining unit for receiving a second plurality of reception signals which are different from said first plurality of reception signals and operable in a first mode to output one of the second plurality of reception signals and operable in a second mode to output a combined signal of the second plurality of reception signals, wherein said second reception unit comprises a second antenna set including a plurality of directional antennas (22A; 22B); and a switching-combining control unit for controlling said first switching-combining unit and said second switching-combining unit in the first mode to switch to and in the second mode combine, one or more of the first and second plurality of reception signals, in accordance with a first signal reception condition in said first reception unit and a second signal reception condition in said second reception unit, wherein said first antenna set comprises a first front directional antenna and a first rear directional antenna, and said second antenna set comprises a second front directional antenna and a second rear directional antenna. a first reception unit having a first switching-combining unit for receiving a first plurality of reception signals and operable in a first mode to output one of the first plurality of reception signals and operable in a second mode to output a combined signal of the first plurality of reception signals, wherein said first reception unit comprises a first antenna set including a plurality of directional antennas (21A; 21B); a second reception unit having a second switching-combining unit for receiving a second plurality of reception signals which are different from said first plurality of reception signals and operable in a first mode to output one of the second plurality of reception signals and operable in a second mode to output a combined signal of the second plurality of reception signals, wherein said second reception unit comprises a second antenna set including a plurality of directional antennas (22A; 22B); and a switching-combining control unit for controlling said first switching-combining unit and said second switching-combining unit in the first mode to switch to and in the second mode combine, one or more of the first and second plurality of reception signals, in accordance with a first signal reception condition in said first reception unit and a second signal reception condition in said second reception unit, wherein said first antenna set comprises a first front directional antenna and a first rear directional antenna, and said second antenna set comprises a second front directional antenna and a second rear directional antenna.