PURPOSE: To attain automatic adjustment of tracking optionally by providing the titled device with a reference frequency generating means for the automatic adjustment of tracking.

CONSTITUTION: In case of the automatic tracking adjustment, reference frequencies f1 f2, f3, f4 are supplied from the reference frequency generating means 14 to a signal transmission system line by a signal switching means 1. At this time, the switching status is inputted to a microprocessor 12 to transfer a program to an automatic tracking adjustment routine. The automatic adjustment routine sets up the frequency dividing ratio of the reference frequency f1 at first so that the f1 can be received. Then a tuning voltage code y1 at the time when the output of a level detecting means is the maximum is stored by scanning the tuning voltage of an antenna coupling means 2 and a high frequency amplifier means 3. After processing the reference frequency f2∼f4 in the same manner, the signal switching means 1 is switched to the normal receiving status. Thereafter, the tuning voltage is determined by arithmetic processing on the basis of the data of yn and fn.