| 摘要 |
PURPOSE:To facilitate installation construction by connecting the output of a BS converter to a BS tuner by using one transmission line, connecting a power supply unit to the transmission line, and further interposing equipment which operates by receiving electric power from the power supply unit. CONSTITUTION:A direct current is fed from the BS tuner 6 to the BS converter 2 through the transmission line 11 and the converter operates. The power supply unit 4 feeds a direct current which is equal in voltage value with said direct current to the transmission line 11 to operate the equipment 3 interposed on the transmission line 11. A satellite broadcast signal received by a parabolic antenna 1 is converted by the BS converter 2 into an intermediate frequency signal, which is processed by the equipment 3 interposed on the transmission line 11 and applied to a television receiver 10 through the BS tuner 6. Only one transmission line is laid for outdoor-indoor connection, so the installation construction is extremely easy and there is no such anxiety that beauty is spoiled owing to a large hole bored in a wall.
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