| 摘要 |
PURPOSE:To constitute an economical system without interference and disturbance to adjacent area by applying hierarchy depending on the quantity of power and adopting larger power toward the higher hierarchy in the mobile radio communication system. CONSTITUTION:A data is sent from the class 1 portable radio equipments 9a-16a to class 1 radio base station R1a respectively. Thus, the base station R1a is provide with reception sections RX9, Rx10-Rx16, the class 1 radio equipment 9a is provided with a filter FL, a data receiver RD and a display section DP. Moreover, the class 1 radio equipments 9a-16a are provided respectively with a generator for a data sending signal at the outside of the talking band and a dial key or the like is used normally to allow the base station R1a to send the data. In using plural data sending signals, complicated data signal transmission is attained. Furthermore, the class 1 radio equipments 9a-16a use separate data transmission signals, then the independent data transmission line is ensured from other class 1 portable radio equipments. |
