| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication device in redundant configuration, in which a loop back route is provided for stable radio signals, the operating state of active/reserve radio equipment can be diagnosed and operation is not stopped during an operating state diagnosis period. SOLUTION: This device is provided with one main antenna 13, one auxiliary antenna 12 and a transfer switch 11 for alternately switching and connecting the main antenna 13 and the auxiliary antenna 12 to two sets of transmitters/ receivers, the transfer switch 11 is changed over so that the transmitted signal of an active transmitter/receiver 14 connected to the main antenna 13 can be received through the auxiliary antenna 12 by a reserve transmitter/receiver 18, and the operating state of the active transmitter/receiver 14 is diagnosed in the reserve transmitter/receiver 18. |
