| 摘要 |
PURPOSE:To reproduce an accurate matching with a storage data in an RAM, by providing a means selecting an address of a CPU and the RAM in interlocking with a band switch of an antenna circuit matching device so as to save the trouble of the readjustment of the matching device required at each band switching of a transmitter. CONSTITUTION:The transmitter is connected to an input side of an antenna circuit matching device and an antenna is connected to an output. A switch SW2 interlocked with the band switch SW1 of this matching device is provided and a signal is inputted to an operating circuit of the CPU every time the switch SW2 is operated. The address of the CPU and the RAM is selected with the signal input, and an output voltage of an angle detector proportional to the angle of rotation is A/D-converted in interlocking with the matching device. Further, the output of the CPU controls servo motors M1, M2, the trouble of the readjustment of the matching device required at each band switching of the transmitter is saved, allowing to reproduce accurately the matching with a data stored in the RAM. |
