| 摘要 |
PURPOSE:To make a parabolic antenna face a specified satellite and to receive broadcast from a selected transponder by providing a satellite specifying means, an antenna control means, a transponder specifying means and a transponder selecting means. CONSTITUTION:When a satellite specifying switch 21 is pressed, a CPU 611 detects the pressing. The number of a satellite specified by the satellite specifying switch 21 is displayed on a display 271, and simultaneously stored in a memory area SR. Code data corresponding to the specified satellite number is supplied to an antenna controller 7, and the parabolic antenna 2 is faced toward the specified satellite. When a transponder specifying switch 22 is pressed, the CPU 611 detects the pressing. Then data corresponding to the specified transponder number is supplied to a demodulator 24, and demodulated after it is tuned to the frequency of the specified transponder. The output of the demodulator 24 is supplied to a receiver main body 26 through a switch 25, and is received. Then a flag '3' is checked to stand or not. Thus the satellite and transponder are selected, and a desired radio wave can be received.
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