ON-VEHICLE RECEIVER

摘要

PURPOSE:To adjust easily the direction of antenna by displaying the maximum sensitivity of the antenna for receiving satellite broadcast installed to an automobile or the like in a way turnable freely possible for being raised and brought down. CONSTITUTION:A part of a reception signal from a tuner is extracted, detected and amplified by a detection amplifier circuit 34. The output is fed to a peak hold circuit 35 so as to store the maximum voltage when the parabolic antenna is turned once. Then the antenna is turned again and the detected voltage at that time is compared with the maximum voltage stored in the peak hold circuit 35 by a comparator circuit 36. Then a display element 33 is lighted when the detected voltage is equal to the stored maximum voltage on the way of the turning. Thus, the direction of the parabolic antenna for receiving satellite broadcast is adjusted easily.