MOBILE RADIO COMMUNICATION EQUIPMENT

PURPOSE:To attain communication with both mobile stations inside and outside a service area through a single radio communication equipment, by performing the multiple communication when the intensity of a received electric field is higher than a prescribed level and then the simple communication when said intensity is lower than the prescribed level. CONSTITUTION:When a mobile station is set within a service area A, a radio wave of a frequency fR sent from a base station 1 is received by a receiver via an antenna 44 and an antenna share unit 43. A detection circuit 45 detects the intensity of the received reception signal. Then a changeover switch SW47 is connected to the side (a) since the intensity of said signal is higher than a prescribed level. The mobile stations 11 and 12 perform the multiple communication with a transmitter 41 and a receiver 42 via the station 1 with transmission and reception frequencies fT and fR respectively. The communication is carried out with a mobile station 31 set in an out-of-service area B with a transmission frequency fT. In this case, a switch control circuit 46 is controlled by the output of the circuit 45 since the detection output of the circuit 45 is less than a prescribed level. Then an SW47 is switched to the side (b) and the frequency fT is converted into fR by a frequency conversion circuit 48 to secure the direct simple communication with the station 31. The SW47 is changed to the side (a) in a reception mode.