A digital TV broadcast signal receiver determines, as the best receiving direction, a receiving direction in which a digital TV broadcast signal can be accurately received. The digital TV broadcast signal receiver continuously scans all the receiving directions of a multi-directional antenna for each channel (S1), and demodulates received digital TV broadcast signals so as to detect BER values (S2), and also stores the detected BER values in a memory (S3). It further detects a minimum-error receiving direction or directions, among all the receiving directions, to give a minimum BER value, and determines whether or not there are multiple minimum-error receiving directions (S4). If there are multiple minimum-error receiving directions (YES in S4), it determines one of the minimum-error receiving directions as the best receiving direction for each channel with reference to BER values of receiving directions which are adjacent to the minimum-error receiving directions (S5 to S10).