| 摘要 |
PURPOSE:To obtain the best receiving state at all times, by providing a display means for executing the display when a signal from an antenna is applied, and its signal level is a specified value or above, on plural antennas, respectively. CONSTITUTION:Parabolic antennas 1, 1a are connected to an adaptor 8 by use of feeder lines 2, 2b, respectively. Subsequently, an output of this adaptor 8 is applied to a television receiver 3a by a feeder line 2a. In this regard, display lamps 7a, 7b of the adaptor 8 are connected as display for the parabolic antennas 1, 1a, and only when a signal from the parabolic antennas 1, 1a is of a specified value or above, the display lamps 7a, 7b are lighted. |
