| 摘要 |
PURPOSE:To quickly and accurately adjust the direction of an FPU parabolic antenna of a relay car even at any relay point by confirming a maximum point of a received electric field by metering. CONSTITUTION:A V/F converter 1 receives a DC voltage proportional to a reception electric field strength of an FPU receiver 7 and converts the voltage into an audible frequency signal. An F/V converter 4 receives the audible frequency signal received from a base station and converts the frequency signal into a DC voltage. A monitor 5 receives the DC voltage to indicate it by a meter and an optimum direction of the antenna is set by obtaining a maximum value of a deflection of a pointer of the meter. |
