RADIO COMMUNICATION FEED SYSTEM

摘要

PURPOSE: To prevent the system down or a subscriber radio communication system by automatically switching the power consumption mode, of a slave station to the power saving mode at the time of reduction of the battery capacity to be able to use the battery for a longer time and immediately transmitting an alarm of battery capacity reduction to a master station to enable a maintenance manager to find the state of battery capacity reduction. CONSTITUTION: A solar battery control part 4 controls charging/discharging of a solar battery panel 3 and a battery 5 to output battery capacity data 12. A battery capacity detection part 7 outputs a capacity detection signal 20. A transmission power control part 8 receives the capacity detection signal 20 to output a transmission output switching signal 23. An alarm output part 9 receives the capacity detection signal 20 to output alarm data 22. An adder 10 adds alarm data 22 to transmission data 11 to output an addition signal 24. A transmission part 6 transmits it to the master station through an antenna 2.