| 摘要 |
PURPOSE:To check the operation easily on the production line, by providing a means, which attenuates the receiving wave by the operation of a test switch, in each of plural antennas and by providing a means which indicates a selected antenna. CONSTITUTION:In a diversity receiving device where multipath distortions of signals received through antennas 1a and 1b and receiving circuits 2a and 2b are detected by distortion detecting circuits 3a and 3b and the receiving circuit 2 of less distortion is selected by a comparing circuit 4 and a switching circuit 5, antenna circuits 13a and 13b for attenuating or cutting antenna receiving signals are provided for receiving antennas 1a and 1b, respectively, and receiving signals are attenuated or cut by operations of test switches 14a and 14b for check. When the switch 14b is turned on, radio waves from the antenna 1a are reproduced, and a light emitting diode PD1 is lit, and thus, normal operations of respective circuits are confirmed. |
