The present invention is a wide band GaAs microwave monolithic integrated circuit transmit chip that is capable of transmitting linearly or circularly polarized signals when connected to a pair of orthogonal cross-polarized antennas. The efficiency monitor includes an input power monitor, for measuring the input power delivered to the primary coil, and an output power monitor, for measuring the output power received by the secondary coil. The mounting system is configured to attach to a cellular antenna mount using the same physical mounting system as the cellular antenna elements. The first signal output and the second signal output are combined to yield a combined signal output. The flow rate controlling device controls the stored hot water adjusting device to reduce the flow rate of stored hot water flowing through the stored hot water pathway when the temperature of stored hot water is a first predetermined temperature or less during the starting of operation of the fuel cell. The call processor sets a connection in a selected connection setting route, and sets another connection in the predetermined optimum route by the switchover instructions.