| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that it is difficult to perform frequency management at the time of executing the synchronization of this system since all mobile transmitters are operated with different frequencies in a normal analog radio path, and that any trouble is generated in the mobile transmitters since operating radio frequencies and control radio frequencies approach. SOLUTION: In this system for controlling mobile transmitting and/or receiving devices (4, 5, 6, 7) connected to a central unit (1), data and/or signals are transmitted and/or received in a first frequency band. In this system, the mobile transmitting and/or receiving devices and the central unit are provided with means (31, 41, 51, 61, and 71) for operating two-way communication in a second frequency band with the transmitting and/or receiving devices so that the central control of the mobile transmitting and/or receiving devices under a limited environment can be easily performed from the central unit. |
